Unprecedented, Destructive October Snowstorm!

By: Zachary Labe , 6:27 PM GMT on October 28, 2011

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"Current Temperature"


"Current Dewpoint"


"Current Surface Map and Weekly History of Jet Stream Position"


"Regional Radar"


"Regional Satellite"


"Regional Advisories"


"12hr Estimated Precipitation"


"Forecast Max Temperatures"


"Forecast Min Temperature"


"Forecast Weather at 2pm"


"Current Storm Reports"


"Forecast Model Links"
-NAM model 12z...Link
-GFS model 12z...Link
-NMM model 12z...Link
-SREF model 9z...Link

This is a pretty quick intro on computer model forecasts along with beneficial links. Computer models use the complex calculus algorithms to print out the forecasts. Despite our complaning with the models, without them much of us would be lost except in the short time. Some of the earlier computer models consisted of the ETA, NGM, and AVN, which forecasted generally less than 84hrs. They were highly inaccurate, but provided a basis. The ETA was actually the computer model that helped meteorologists predicted the "storm of the century" in March of 1993 so well in advance. But now more than ever we have a myriad of computer models available to the general public with many mesoscale models only available to NOAA. Lets start with the general. All current computer models are based off on the Zulu time. Zulu time is also known as UTC or Greenwich time . Generally to forecast timing of storms my special BUFKIT data transitions UTC time to EST time, which is helpful. But BUFKIT is a special download, which I won't get into, but the transition is helpful as for some reason I never am able to understand time zones too well, hahaha. Anyways let me start with each computer model...

-GFS (Mentioned most of all as it is a global model (Global Forecasting System))
~Available in 0z (initiates at 10:30pm), 6z (initiates at 4:30am), 12z (10:30am), 18z (4:30pm)
~Forecasts out to 384hrs
~Typical biases
Cold bias on long range on 18z run
6z and 18z slightly unreliable
Northwest trend on lows within 84hrs of event

-ECMWF (This is another global model run by an international organization (European Centre for Medium-Range Weather Forecasts))
~Available in 0z (initiates at 1:30am), 12z (initiates at 1:30pm)
~Forecasts out to 240hrs
~Typical biases
Overphases lows in 168hr range
Holds too much energy in southwest
Known as extremely accurate within 140hrs

-NAM (Mesoscale short range model)
~Available in 0z (Initiates at 9:30pm), 6z (Initiates at 3:30am), 12z (initiates at 9:30am), 18z (Initiates at 3:30pm)
~Forecasts out to 84hrs
~Typical biases
Highly inaccurate towards the 84hrs
Handles coastal storms very well and southwest overrunning events
Tendency for way too much QPF

Those three above are the most common models for a beginner in computer models, but there are many more. All of the global models consistent of ensemble models also, such as the GFS has a myriad of ensemble (small models) that create a mean solution known as GEFS. They typically are too cold and southeast with low pressures, but some reason the NWS seems to enjoy using them. There are also more global models than the GFS and ECMWF... The UKMET is run by an internation organization and forecasts out to 144hrs. This model typically comes out an hr before the ECMWF and usually is pretty similar to the ECMWF. The ECMWF may also be known as the EURO by the way. There is also a Canadian model known as the GGEM/CMC, which again contains ensemble models. All of the internation models only run 0z and 12z runs. This is probably for the best as all models only receive new upper air data in 0z and 12z runs, so this is why the American model runs of the 6z and 18z are usually worthless. There is also a high resolution Canadian model known as the RGEM, which is very similar to the American NAM. High resolution (mesoscale models) are important as they usually are able to pick up on fine details such as frontogenesis, advection, adebiatic cooling, convection, etc. Some of this high resolution models include the WRF, HIRES NMM, RUC, ARW. They all are usually very accurate, but the WRF and HIRES NMM usually have wet bias.

As mentioned above there are ensemble models which come up with a mean solution instead of using one computer model's algorithms like the global models use. These ensemble mean solution are known as the MREF and SREF with MREF being in the medium range and SREF in the short range. SREF is usually pretty accurate and forecasts within 87hrs of an event. There are also other computer models used for hurricane forecasting, but I will not get into them. For instance one is the GFDL, which you may have heard of. I find I use mainly the GFS, NAM, and WRF/NMM in the summer, but use all of the models in the winter.

A few models to avoid...
JMA
KMA
CAMPASS
DGEX

Here is a list of links for explanations on how to interperate the models...

-PennState E Wall, which runs all of the models
http://www.meteo.psu.edu/~gadomski/ewall.html

-PennState E Wall tutorial on computer models (Check it out)
http://www.personal.psu.edu/adb241/eWallTutorial/ Main.htm

-Severe Weather parameters used on models, explanation
http://www.crh.noaa.gov/sgf/n=severe_weather_chec klist_paper

-Forecasting winter weather
http://www.crh.noaa.gov/lmk/soo/docu/precip_type. php

-NCEP; used to find American Computer models
http://www.nco.ncep.noaa.gov/pmb/nwprod/analysis/

-Severe Weather Models
http://www.wxcaster.com//conus_0012_us_models.htm

-Winter Weather Models
http://www.wxcaster.com/conus_snowfall.htm

-Model Soundings
http://wxweb.meteostar.com/sample/sample.shtml?te xt=KMDT#

The last link is listed above as model soundings which takes all of the data to print out all sorts of information including precipitation type along with dynamics such as Omega. This is very complex and takes some time getting used to. Also you may see this data instead of in charts, it is sometimes used in SKEWT T charts.

I hope all of this information helped out... Keep in mind precipitation amounts is QPF, with 500mb aloft being the jet stream, 700mb aloft measuring relative humidity, 850mb aloft measuring 5,000ft aloft temperatures, 925-1000mb measuring surface temperatures. Generally I would look at the GFS and NAM first to get a hang of it along with reading the tutorial links. Use the 850mb and 2m charts for the GFS especially as they are pretty self explanatory and color coded. You will find some maps for international models are confusing and black and white.

Lower Susquehanna Valley Doppler...

(Courtesy of WGAL)

Follow my 24hr forecasts on Twitter... Link and Facebook... Link.

Please post storm reports in this blog from across the Northeast during the winter storm and please post location of observation in each report...

This blog is in progress. Check back soon...

Winter Forecast 2011-2012... Link

Historic October Nor'easter...
Higher cirrus will begin to flood the northern Middle Atlantic later in the day Friday after high temperatures in the mid 40s with partly cloudy skies. Clouds will begin to thicken and lower Friday night with precipitation moving northward as a 1000hPa coastal low pressure moves up the coast. The low pressure will follow an ideal track up and along the coast and if it were winter... this would be a major snowstorm for all of the Northeast including towards the coast. But given climatological means during late October, snow will only fall in certain locations well to the northwest. Precipitation will move northward as rain into Virginia and Maryland Friday night and move up into southern Pennsylvania also as rain. Evaporational cooling will begin as 2m temperatures fall to near dewpoint values late Friday night changing over to snow for southern Pennsylvania particularily for elevations above 800ft with a rain/snow mix in the valleys.

As the low begins to intensify further, a deformation axis will likely form well to the west of the center of circulation. The placement of this axis is key to the snow accumulation region as it will bring cold air down the surface in the form of dynamic cooling. Given the low track this axis is likely to form in eastern Pennsylvania up through central New England. Saturday will feature well below normal highs withs highs not reaching 40 as far south as Washington DC. Precipitation will intensify during the day. Ground temperatures initially in the 40s and marginal boundary layer temperatures will keep the highest accumulations in the higher elevations with several inches possible above 200ft (perhaps up to 12in as far south as South Mountain, Pennsylvania). Elsewhere valley locations can also expect some light snow accumulation as far south as northern Maryland. For the I-95 corridor, a mix of rain and snow is likely with no accumulation. Snow accumulations up through New England are likely 4-7in for the valleys and 8-14in for the higher elevations. I could even envision higher amounts given the strength of the deformation axis. Total QPF printout from guidance such as the ECMWF and GEFS suggest 1.0in-2.0in across the entire Northeast.

Most of the snow will fall during the day Saturday. If timing were a bit more favorable such as Saturday night, this would have been a potentially record breaking, rare October snow event.

Given the high leaf foliage in some areas, the combination of wet snow will cause major tree damage in some locations especially in eastern Pennsylvania. Power outages are possible. Snow ratios will be near 6/7:1 with rates up to 0.5in/hr at times. Given the heavier snow rates at times, even areas with boundary layer temperatures at 34-35F may see a quick accumulation.

I want to raise a few critical points...

1) Current ground temperatures really have little to do with snow accumulation when rates fall above 0.5in/hr. Snow can accumulate even on roads. The sun angle in late October is like mid February and has little impact. Combine this with marginal temperatures, cloud cover, and heavy snow rates this will cause snow to accumulate very easily after the initial lighter snow.

2) The biggest concern is the trees which I have been hyping for the last 24hrs. Snow accumulations possibly over 10in in some areas of south-central Pennsylvania up through New England could bring devastation to trees. The heaviness of the wet snow on foliage is a disaster. And looking a records, this has never happened before in many areas!

3) I-95 is a tough forecast and is dependent on exact low track. But given the dynamics of this storm which may cause even thundersnow, the big cities should all change to snow at some point.

4) Given the time of year, water temperatures are very warm and the temperature gradient and the natural baroclinicity along the coast will cause the storm to rapidly undergo bombogenesis with very unusual mesoscale features. This will cause some areas to see rapidly high QPF totals.

Selected City Accumulations for the Northeast...
Hagerstown, MD- Rain/snow then heavy snow. Accumulations 5-12in
Baltimore, MD- Rain changing to snow. Accumulations up to 4in especially the higher hills.
Salisbury, MD- Mostly rain with a trace of snow
Pittsburgh, PA- Rain/snow then snow. Accumulations 2-4in
State College PA- Moderate snow. 5-7in
Williamsport, PA- Heavy snow. Accumulations 5-10in
Altoona, PA- Moderate snow. Accumulations 5-7in
Harrisburg, PA- Heavy snow. Snow accumulations 6-14in
Lancaster, PA- Heavy snow. Snow accumulations 6-13in
Philadelphia, PA- Rain/snow changing to snow. Accumulations 1-3in+
Allentown, PA- Heavy snow. Snow accumulations 6-14in
Scranton, PA- Heavy snow. Snow accumulations 6-12in
Washington, DC- Rain changing to rain/snow. Spotty 1-3in accumulations are possible
Wilmington, DE- Rain changing to rain/snow. Spotty 1-4in accumulations are possible
Dover, DE- Rain changing to rain/snow with trace accumulations
Trenton, NJ- Rain/snow changing to snow. Accumulations 2-4in
New York City, NY- Rain/snow changing to snow. Accumulations 1-6in depending on location.
Poughkeepsie, NY- Heavy snow. Accumulations 5-10in
Binghamton, NY- Light snow. Accumulations 3-6in
Ithaca, NY- Light snow. Accumulations 2-4in
Albany, NY-Moderate snow. Accumulations 4-8in
Hartford, CT- Rain/snow changing to heavy snow. Accumulations 4-7in
Concord, NH- Heavy snow. Accumulations 5-10in
Providence, RI- Rain changing to rain/snow. Spotty 1-3in accumulations
Worcester, MA- Heavy snow. Snow accumulations 6-13in
Boston, MA- Rain/snow with spotty accumulations 1-3in
Nantucket, MA- Heavy rain and high winds up to 60mph
Hyannis, MA- Heavy rain and gale force winds in excess of 60mph
Portland, ME- Heavy snow. Accumulations 4-9in
Bangor, ME- Heavy snow. Accumulations 6-12in
"Subject to Change"

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480. JonahWitDaForecast
11:43 AM GMT on June 13, 2012
Quoting Blizzard92:

Quoting shoreacres:

Blizzard - Curious about something. I saw someone refer to this storm as "Allison". Do they name winter storms now? That could be a little confusing, since TS Allison wreaked havoc on Houston a few years ago! LOL
Hi! That sure is odd. I have not heard anything nor am I familiar with any naming technique. Huh.


Fitting, it seems, since WS Allison wreaked equal havoc on the Northeast. Hi, you've got Jonah Larsen of the Dublin Coffman Weather Service here. First and foremost, the page deleted on wikipedia was not an account, but an informational article and was deleted for reasons regarding the small size and minimal news coverage of our weather agency. Not for spamming as one user suggested. I, being the head of the DCWS and directing its individual departments, including the winter storm center, created the naming system last year to fill what many people see as a gap in weather information -- an easy, one-line identifier for an individual winter storm. In addition, I created the Jonah Larsen Winter Storm Scale (JLWSS), which rates a storm's impacts on a scale from 0-5 as the SSHS does with hurricanes. Blizzards, Ice Storms, and run-of-the-mill Winter Storms and Disturbances can be rated on the scale. The naming technique utilizes a 105-name list, found on the DCWS website. A flag system like the ones used for advisory-, gale-, storm-, tropical storm-, and hurricane-force winds by the coast guard was also created, and can be found on my blog. Please don't think I'm trying to advertise here or anything, I'm just describing the systems you inquired about. I would love for my name list to gain increased usage, though, so feel free to come by my blog and see what names winter storms are getting from the DCWS. Using names for winter storms provides an easier means of communication regarding their impacts.
Member Since: October 4, 2011 Posts: 11 Comments: 0
479. NJTom
4:05 PM GMT on November 01, 2011
I hope all you snow morons are satisfied with your wonderful blizzard. Too bad the power company couldn't arrange it so your houses are the last to be brought on line.
Member Since: December 15, 2008 Posts: 0 Comments: 156
478. goofyrider
1:55 PM GMT on November 01, 2011
The more things change ...

Weather service has a standard for snow measurement. P451 had his knickers in a twist 2 years ago over his measurements. D'ont know if he ever accepted the official method either, since we can no longer see his great comments. Eh :-))

The records are or should be based on a standard. They have one. You think yours is better, than keep measurements both ways so you can compare.
Member Since: February 27, 2009 Posts: 0 Comments: 2788
477. FlaBlondie
3:20 AM GMT on November 01, 2011
Hi Winter Weather Guys

Happy Halloween to you all..

hope you enjoyed your evening..

Love,
Blondie



Member Since: October 16, 2006 Posts: 5 Comments: 178
476. TheRasberryPatch
1:34 AM GMT on November 01, 2011
MM - I hear what you are saying...it dumbfounds me that the NWS has NO standarized test for these official sites..or the people are not adhering to those procedures. i have worked in a lab and you MUST follow the correct procedures or you don't have accurate results. Even in school labs you follow the correct procedures.
Even as a Cocorahs observer I try to follow the correct procedure. Cocorahs has a procedure for snowfall measurement and that is the procedure you follow. Why is it so difficult for the person at these airports to follow the procedures. Is it because it is a gov't agency? Would we have this problem if it was a private company? Would that private company still exist if they messed up like that?

Gams - thanks for the treat...always good to see your greetings
Member Since: January 26, 2007 Posts: 72 Comments: 6259
475. MariettaMoon
12:32 AM GMT on November 01, 2011
10/30/11 NORTHEAST RECORD LOW MINIMUMS
N. Queens (LAG) NY: 35F (t)
Danville VA: 27F (t)

10/29/11 NORTHEAST RECORD LOW MAXIMUMS
Wilkes-Barre PA: 39F (t)
Williamsport PA: 42F*
Islip NY: 44F (t)
Harrisburg PA: 42F*
Trenton NJ: 45F*
Philadelphia PA: 45F (t)
Wilmington DE: 44F*
Morgantown WV: 40F*
Martinsburg WV: 39F*
Elkins WV: 37F*
Dulles VA: 39F*
Arlington (DC) VA: 42F*
Richmond VA: 45F*

10/29/11 NORTHEAST RECORD LOW MINIMUMS
N. Queens (LAG) NY: 33F (t)
Member Since: June 11, 2011 Posts: 36 Comments: 677
474. MariettaMoon
11:20 PM GMT on October 31, 2011
The measurement does seem more like a series of hourly rates, aka measured & cleared every hour. I actually never understood the every 6 hour measurement either because you're essentially giving a series of 6 hour snowfall rates throughout the storm. In my opinion, the official measurement of a snowfall event should be the maximum snow depth during the event, observations taken at the top of every hour and at the moment of precipitation type change, no clearing of the whiteboard.
Member Since: June 11, 2011 Posts: 36 Comments: 677
473. hurigo
11:11 PM GMT on October 31, 2011
Hello Blizz, et al
Member Since: October 9, 2005 Posts: 100 Comments: 6731
472. MariettaMoon
9:56 PM GMT on October 31, 2011
Quoting Mason803:
5.5" is offical

.CLIMATE...
-- Changed Discussion --THE HARRISBURG INTL AIRPORT SNOWFALL MEASUREMENT FOR THE 29TH HAS
BEEN FINALIZED AT 5.5 INCHES. THIS REVISED SNOWFALL VALUE IS STILL
THE RECORD FOR THE DAY AND FOR THE WHOLE MONTH OF OCTOBER. THE
CHANGE FROM THE EARLIER NUMBER /9.7 INCHES/ WAS ARRIVED AT AFTER A
THOROUGH REVIEW AND CORRECTION TO THE MEASUREMENT TECHNIQUES USED
THAT DAY AT THE AIRPORT.-- End Changed Discussion --

&&



That's just unacceptable. I feel snowfall measurements are very important climate wise. That person and the person at BWI should be taken off the job. It has to be standardized, it has to be as exact as humanly possible, and it has to be strictly enforced at official measuring stations.

I don't buy the public measurement of 16.0" at Hazleton PA given radar estimated precipitation in that area.
Member Since: June 11, 2011 Posts: 36 Comments: 677
471. seflagamma
8:55 PM GMT on October 31, 2011
Hi Bliz,

That was some snow storm to run up to the NE part of the country in October!!!
Daughter got some snow outside of Boston.


Now we are flooding here in SE Florida, 10" of rain since Friday! 4" last night and this afternoon!!!


if we have any trick or treaters they will need a boat to get down our street!

Happy Halloween my WU Friends!!!



Enjoy your evening!!!
Member Since: August 29, 2005 Posts: 299 Comments: 40917
470. originalLT
8:51 PM GMT on October 31, 2011
Last night, on the Weather Channel, Jim Cantore, who was in Harrisburg. said he thought downtown Harrisburg had about 5-6", and he could not believe the airport total of 9.7". I guess he was right.
Member Since: January 31, 2009 Posts: 0 Comments: 7617
469. tropicfreak
6:56 PM GMT on October 31, 2011
Happy Halloween all. For all you mid atlanticers (especially Virginians) check out my blog, has a full and complete winter weather outlook.

Winter Weather Outlook for VA
Member Since: September 2, 2006 Posts: 110 Comments: 6878
468. listenerVT
6:33 PM GMT on October 31, 2011
Scary Ally update at Crowe's blog.
Member Since: July 11, 2007 Posts: 0 Comments: 5513
467. Zachary Labe
6:04 PM GMT on October 31, 2011
Quoting Mason803:


don't know the whole story yet but my guess would be the snow was measured every hour by the FAA employee and relayed to nws as the ob for the airport. same thing happened at bwi a few years ago. doesn't seem to become an issue until the event was a possible record. the whole process needs looked at imo

They really need to get a set protocol for snow measurements to avoid these types of errors. Somehow I guess we will never know what the official measurement was despite the 5.5in release.
Member Since: December 14, 2007 Posts: 284 Comments: 15112
466. Mason803
4:27 PM GMT on October 31, 2011
Quoting TheF1Man:


How were they off by 50%?


don't know the whole story yet but my guess would be the snow was measured every hour by the FAA employee and relayed to nws as the ob for the airport. same thing happened at bwi a few years ago. doesn't seem to become an issue until the event was a possible record. the whole process needs looked at imo
Member Since: November 5, 2008 Posts: 0 Comments: 1139
465. TheF1Man
4:23 PM GMT on October 31, 2011
Quoting Mason803:
5.5" is offical

.CLIMATE...
-- Changed Discussion --THE HARRISBURG INTL AIRPORT SNOWFALL MEASUREMENT FOR THE 29TH HAS
BEEN FINALIZED AT 5.5 INCHES. THIS REVISED SNOWFALL VALUE IS STILL
THE RECORD FOR THE DAY AND FOR THE WHOLE MONTH OF OCTOBER. THE
CHANGE FROM THE EARLIER NUMBER /9.7 INCHES/ WAS ARRIVED AT AFTER A
THOROUGH REVIEW AND CORRECTION TO THE MEASUREMENT TECHNIQUES USED
THAT DAY AT THE AIRPORT.-- End Changed Discussion --

&&



How were they off by 50%?
Member Since: February 23, 2010 Posts: 0 Comments: 677
464. Mason803
4:16 PM GMT on October 31, 2011
5.5" is offical

.CLIMATE...
-- Changed Discussion --THE HARRISBURG INTL AIRPORT SNOWFALL MEASUREMENT FOR THE 29TH HAS
BEEN FINALIZED AT 5.5 INCHES. THIS REVISED SNOWFALL VALUE IS STILL
THE RECORD FOR THE DAY AND FOR THE WHOLE MONTH OF OCTOBER. THE
CHANGE FROM THE EARLIER NUMBER /9.7 INCHES/ WAS ARRIVED AT AFTER A
THOROUGH REVIEW AND CORRECTION TO THE MEASUREMENT TECHNIQUES USED
THAT DAY AT THE AIRPORT.-- End Changed Discussion --

&&

Member Since: November 5, 2008 Posts: 0 Comments: 1139
463. Hoynieva
2:48 PM GMT on October 31, 2011
This was a difficult storm to measure, even for the experts I imagine. I merely use a measuring tape and check every hour (far from professional), but I still can't figure out how Central Park only measured 2.9." The least I had was 4" and that was with serious compaction. It never stopped snowing from 11 AM until midnight, moderate to heavy for long periods of time, so 2.9" isn't too believable. Alas, that's the official number, forevermore.
Member Since: January 20, 2009 Posts: 0 Comments: 1503
462. Mason803
2:44 PM GMT on October 31, 2011
Quoting TheRasberryPatch:
Finally we had a hard freeze, but does the snow insulate the ground to where it didn't recognize the cold temperatures?

the water content of the snow I received was 1.45" for 7.6" of snow which is 5.24" of snow per 1" or water


i had 1.13" of precip and 4.2" of snow which puts our ratios very close.
Member Since: November 5, 2008 Posts: 0 Comments: 1139
461. Mason803
2:42 PM GMT on October 31, 2011
from this morning's discussion


.CLIMATE...
-- Changed Discussion --THE HARRISBURG INTL AIRPORT SNOWFALL MEASUREMENT FROM THE 29TH OF
OCTOBER IS UNDER REVIEW. THE INITIAL VALUE OF 9.7 INCHES WAS
REVISED DOWNWARD TO 5.5 INCHES ON SUNDAY EVENING DUE TO A CURSORY
REVIEW. THERE WILL BE A MORE-THOROUGH REVIEW OF THE RECORD SNOWFALL
MEASUREMENT.

my guess is that it wasn't measured every six hours like what happened at bwi during one of the big february storms


Link
Member Since: November 5, 2008 Posts: 0 Comments: 1139
460. Zachary Labe
11:49 AM GMT on October 31, 2011
Quoting shipweather:
does this snow storm count towards this coming winters snow totals?

Yep, it counts towards this coming winter. Given this boost in the seasonal total by nearly 10in, it is likely we definitely come in at normal or probably above normal given the winter forecast unless something drastic happens.
Member Since: December 14, 2007 Posts: 284 Comments: 15112
459. TheRasberryPatch
11:44 AM GMT on October 31, 2011
Finally we had a hard freeze, but does the snow insulate the ground to where it didn't recognize the cold temperatures?

the water content of the snow I received was 1.45" for 7.6" of snow which is 5.24" of snow per 1" or water
Member Since: January 26, 2007 Posts: 72 Comments: 6259
458. shipweather
4:12 AM GMT on October 31, 2011
does this snow storm count towards this coming winters snow totals?
Member Since: December 15, 2007 Posts: 19 Comments: 987
457. TheF1Man
3:53 AM GMT on October 31, 2011
Quoting Blizzard92:
Finally... All areas will go below freezing tonight if they have not already this year!


That also means black ice.

SO my college is the only one within miles that decided to open tomorrow even though most of campus has no electricity or water. I'm not sure what they're trying to prove. Sure I can walk to class easily, but what about workers and teachers than have 20 or 30 minute trips. Western New England University (previously college) was notorious for never closing, but this time they've gone too far.
Member Since: February 23, 2010 Posts: 0 Comments: 677
456. Zachary Labe
1:49 AM GMT on October 31, 2011
Finally... All areas will go below freezing tonight if they have not already this year!
Member Since: December 14, 2007 Posts: 284 Comments: 15112
455. MariettaMoon
1:38 AM GMT on October 31, 2011
HIGHEST REPORTED SNOWFALL TOTALS IN EACH NORTHEAST STATE

CONNECTICUT
Bakersville: 18.6"

DELAWARE
Greenville: 0.9"

MAINE
Acton: 20.0"

MARYLAND
Frostburg: 11.6"

MASSACHUSETTS
Peru: 32.0"

NEW HAMPSHIRE
Jaffrey: 31.4"

NEW JERSEY
West Milford: 19.0"

NEW YORK
Millbrook: 21.6"

PENNSYLVANIA
Hazleton: 16.0"
Huff%u2019s Church: 16.0"
Springtown: 16.0"

RHODE ISLAND
West Glocester: 6.6"

VERMONT
West Halifax: 16.0"

VIRGINIA
Skyland: 9.0"

WEST VIRGINIA
Mount Storm: 14.0"
Member Since: June 11, 2011 Posts: 36 Comments: 677
454. BaltimoreBrian
12:46 AM GMT on October 31, 2011
000
SXUS71 KLWX 300605
RERBWI

RECORD EVENT REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
0126 AM EDT SUN OCT 30 2011

...RECORD DAILY MAXIMUM SNOWFALL WAS TIED AT BALTIMORE MD...

A RECORD DAILY MAXIMUM SNOWFALL OF TRACE INCH(ES) WAS TIED AT
BALTIMORE MD YESTERDAY. THIS TIES THE OLD RECORD OF TRACE SET IN
1952.

...RECORD DAILY LOW MAXIMUM TEMPERATURE WAS SET AT BALTIMORE MD...

A RECORD DAILY LOW MAXIMUM TEMPERATURE OF 42 DEGREES WAS SET AT
BALTIMORE MD YESTERDAY. THIS BREAKS THE OLD RECORD OF 46 DEGREES SET
IN 1925.

$$


A trace. If this storm had happened a week later would have been a couple degrees cooler and much more than a trace!
Member Since: August 9, 2011 Posts: 26 Comments: 8630
453. originalLT
12:17 AM GMT on October 31, 2011
Glad you made it safely, MM. It's good you are a very experienced driver.LT
Member Since: January 31, 2009 Posts: 0 Comments: 7617
452. listenerVT
12:15 AM GMT on October 31, 2011
*** ♥ ALLY made it to NYC (for her 3f8 treatments) despite the storm! ♥ ***

Full update over at Crowe's blog:
http://www.wunderground.com/blog/crowe1/comment.h tml?entrynum=15#commenttop
Member Since: July 11, 2007 Posts: 0 Comments: 5513
451. BaltimoreBrian
12:13 AM GMT on October 31, 2011
450. MariettaMoon
12:09 AM GMT on October 31, 2011
Hey! I made it back alive...

By the time we made it to Allentown PA early Saturday afternoon, there were several trees laying across the Pennsylvania Turnpike Northeast Extention. None of them had any warning as you approached them, no police or anything. You just hit the brakes and had to go around them slowly. Passed a car facing the wrong direction fully engulfed in flames. It took 4 hours to reach our destination in the Poconos, typically a 2 hour drive. I didn't so much as lose traction even once.

We received around 12" at Pocono Lake PA, 1760ft. The bottom 2"-3" was wet snow but the top 8"-9" was powdery.
Member Since: June 11, 2011 Posts: 36 Comments: 677
449. BaltimoreBrian
12:04 AM GMT on October 31, 2011
We had flakes mixed with rain in Federal Hill, Baltimore. But no accumulations, not even on car tops.

Two weeks ago Williamsport PA broke their annual rainfall record.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1053 AM EDT MON OCT 17 2011

...2011 NOW THE WETTEST YEAR ON RECORD AT WILLIAMSPORT...

0.11 INCHES OF RAIN FELL AT WILLIAMSPORT YESTERDAY...INCREASING THE ANNUAL TOTAL TO 61.30 INCHES. THIS MAKES 2011 THE WETTEST YEAR ON RECORD...BREAKING THE PREVIOUS ANNUAL PRECIPITATION RECORD OF 61.27 INCHES SET BACK IN 1972.

A CONTINUOUS WEATHER RECORD HAS BEEN KEPT AT WILLIAMSPORT SINCE 1895.

This storm increased their precipitation total for the year so far to 63.18". Records have been kept since 1895. To break the annual precipitation record in mid October is amazing with such a long record period!
Member Since: August 9, 2011 Posts: 26 Comments: 8630
448. goofyrider
11:21 PM GMT on October 30, 2011
@361 the low now at 976 mb Think this makes landfall at Iceland or Ireland.

Looks like PCroton off the grid. He had 8 in at 2200.

One fellow tells the story that after Irene he went out and got a temporary power back up generator. He has it in the front of the garage with the car parked so you can't see it from the street. Apparently aftermarket midnight removal is a problem. But he has to drive to fuel depot to restore function. Don't think this is the sol'n.
Member Since: February 27, 2009 Posts: 0 Comments: 2788
447. TheF1Man
8:35 PM GMT on October 30, 2011
GTO sorry to hear about your car :(

Over 800,000 officially without power in CT. Conditions worse than after hurricane Irena (can you believe it).
Member Since: February 23, 2010 Posts: 0 Comments: 677
446. listenerVT
7:00 PM GMT on October 30, 2011
Here in NW VT we got a dusting of snow overnight which melted off this morning. Grass and sunshine now. Hearing about the power outages, limbs down (especially on GTO's GTO!), people stuck on an Amtrack train overnight, etc., has also melted away my snow envy. Take care, everyone.
Member Since: July 11, 2007 Posts: 0 Comments: 5513
445. listenerVT
6:59 PM GMT on October 30, 2011
Quoting rod2635:




Thank you!!!!! A very creative birthday card. It makes up for the large branches from the fully leafed Gingko tree that I had to haul off the street and sidewalk last night.


You're welcome! It's not every year you get snowfall for your birthday! So sorry you got treefall too.
Member Since: July 11, 2007 Posts: 0 Comments: 5513
444. listenerVT
6:55 PM GMT on October 30, 2011
Quoting GTOSnow:
Not good here in Sutton, Ma. There is a tree sitting on top of my GTO, no power and about a foot of snow to contend with. I got a generator up and running so we at least have heat and internet! I need to go assess the damage to my car, it got at least the front hood, bumper, possibly a door. I was just about in tears when I saw it in my driveway last night as I spent the last 6 years building the car!!!



Oooohhhh noooo!!! Sooo sorry to hear of this terrible occurrence after all your special work! I hope it's all the sort of damage that is body and not engine and that any parts needed are easily available. Be gentle with yourself today.
Member Since: July 11, 2007 Posts: 0 Comments: 5513
443. listenerVT
6:52 PM GMT on October 30, 2011
Quoting LettyS:
Got anywhere from a foot to 16" here in Warwick,NY depending on what part of town you're in. Didn't have our power go out, but lost our internet and phone until about 10 minutes ago.

Our road is already clear, and what was left on the driveway after shoveling has already melted.

Whew!


Wow. No fun losing internet and phone, but glad you got to stay warm and lighted. Shoveling the heavy, wet snow is hard. Take care.
Member Since: July 11, 2007 Posts: 0 Comments: 5513
442. NJLuLu
5:12 PM GMT on October 30, 2011
Wow, amazing amounts of snow for October. We dodged the bullet again here at Jersey shore, mostly rain, slipperly roads last night. Other areas west had quite a big of damage and accumulations.

Wishing everyone the best. Poor GTO, hubby had a 65 his eyes still get moist remembering his goat.

Member Since: January 10, 2011 Posts: 0 Comments: 18
441. Zachary Labe
4:00 PM GMT on October 30, 2011
Member Since: December 14, 2007 Posts: 284 Comments: 15112
440. Zachary Labe
3:36 PM GMT on October 30, 2011
Wow, did KMDT really officially report 9.7in? That is what I saw for the climate summary. Quite impressive!
Member Since: December 14, 2007 Posts: 284 Comments: 15112
439. LettyS
3:34 PM GMT on October 30, 2011
Got anywhere from a foot to 16" here in Warwick,NY depending on what part of town you're in. Didn't have our power go out, but lost our internet and phone until about 10 minutes ago.

Our road is already clear, and what was left on the driveway after shoveling has already melted.

Whew!
Member Since: January 10, 2009 Posts: 0 Comments: 92
438. goofyrider
3:30 PM GMT on October 30, 2011
No accumulation but about 1.85 in precip here. Black ice in am.
Member Since: February 27, 2009 Posts: 0 Comments: 2788
437. PhillySnow
1:45 PM GMT on October 30, 2011
.3 inches accumulation, but a lot more actually fell. We went back and forth between snow, rain and sleet, with much of the heavy precip in liquid form. Still, it's great to see some white out there!

Hope everyone's okay; sorry to hear about your car, GTOSnow.
Member Since: December 18, 2009 Posts: 0 Comments: 1236
436. Mason803
1:38 PM GMT on October 30, 2011
Quoting TheRasberryPatch:
Mason - how come the NWS in their report yesterday evening they didn't mention any Cocorahs snowfall totals?
I hope they don't use my report this morning of 0.3" of snow. I measured 7.6" and reported it at 645pm yesterday and then the 0.3" for this morning.

Cocorahs needs a different way of reporting on days like yesterday. I reported at 730am the 0.08" of rain and they made me change it when I wanted to report the snowfall in the evening.


they will prob release one final pns statement sometime today. this will include coop reports and cocarahs reports and filter out some of the public reports
Member Since: November 5, 2008 Posts: 0 Comments: 1139
435. originalLT
1:28 PM GMT on October 30, 2011
Good morning, GTOSnow, I feel your pain, I love cars and I can imagine what you are feeling. Wcbs radio reports that here in CT. over 700,000 customers are without power, and it may take a week to get everybody back on line. I'm lucky to have power, just up my block they don't have power and in many other areas of my city too. LT Stamford CT.
Member Since: January 31, 2009 Posts: 0 Comments: 7617
434. pittsburghnurse
1:15 PM GMT on October 30, 2011
Would love to hire someone to take the dog out on frosty mornings. Freezing fog with a layer of ice on the steps. Yuk and uh oh. Couldn't find a snow brush for the car yesterday. No one has them in. They say its too early. The retailers obviously are not in tune with the possibilities of October. Still have some patches of snow on the grass.
Member Since: October 14, 2006 Posts: 1 Comments: 639
433. upst8ny12764
12:04 PM GMT on October 30, 2011
Looks Like Mass Was the big winner!

********************STORM TOTAL SNOWFALL********************

LOCATION STORM TOTAL TIME/DATE COMMENTS
SNOWFALL OF
/INCHES/ MEASUREMENT

CONNECTICUT

...LITCHFIELD COUNTY...
WINCHESTER CENTER 10.0 1000 PM 10/29 CT DOT
NORTH CANAAN 10.0 1000 PM 10/29 CT DOT
LITCHFIELD 8.5 1000 PM 10/29 CT DOT
THOMASTON 8.0 1000 PM 10/29 CT DOT

MASSACHUSETTS

...BERKSHIRE COUNTY...
WINDSOR 26.0 1030 PM 10/29 WTEN
SAVOY 24.0 1030 PM 10/29 WTEN
PERU 23.0 730 PM 10/29 WTEN
TYRINGHAM 23.0 1030 PM 10/29 WTEN
WASHINGTON 22.0 730 PM 10/29 BROADCAST MEDIA
LENOX DALE 21.7 300 AM 10/30 CO-OP OBSERVER
BECKET 21.0 1030 PM 10/29 WTEN
LEE 21.0 730 PM 10/29 WTEN
DALTON 20.0 1030 PM 10/29 WTEN
HINSDALE 20.0 1030 PM 10/29 WTEN
NEW MARLBOROUGH 16.5 720 PM 10/29 BROADCAST MEDIA
PITTSFIELD 16.0 1030 PM 10/29 WTEN
FLORIDA 15.0 1030 PM 10/29 WTEN
ADAMS 15.0 1030 PM 10/29 WTEN
GREAT BARRINGTON 15.0 820 PM 10/29 BROADCAST MEDIA
1 NE STEARNSVILLE 14.5 930 PM 10/29 NWS EMPLOYEE
LANESBOROUGH 13.0 919 PM 10/29 WEATHERNET6
CHESHIRE 12.0 730 PM 10/29 WTEN
WILLIAMSTOWN 7.2 1000 PM 10/29 SPOTTER

NEW YORK

...ALBANY COUNTY...
POTTER HOLLOW 7.0 1033 PM 10/29 WEATHERNET6
RAVENA 6.8 734 PM 10/29 WEATHERNET6
PRESTON HOLLOW 4.0 737 PM 10/29 WEATHERNET6
1 ENE MCKOWNVILLE 3.8 200 AM 10/30 NWS OFFICE
KNOX 3.8 1053 PM 10/29 WEATHERNET6
COLONIE 2.8 317 AM 10/30 WEATHERNET6
MEDUSA 2.8 601 PM 10/29 WEATHERNET6
1 E NORTH BETHLEHEM 2.3 1000 PM 10/29 NWS EMPLOYEE
GREEN ISLAND 2.2 1111 PM 10/29 WEATHERNET6
1 NE SHAKERS 1.6 750 PM 10/29 AIRPORT
FEURA BUSH 1.2 627 PM 10/29 WEATHERNET6
DELMAR 1.0 614 PM 10/29 WEATHERNET6

...COLUMBIA COUNTY...
NORTH HILLSDALE 18.0 331 AM 10/30 SPOTTER
TAGHKANIC 13.1 1047 PM 10/29 WEATHERNET6
COPAKE FALLS 13.0 700 PM 10/29 BROADCAST MEDIA
RED ROCK 10.0 700 PM 10/29 EMERGENCY MNGR
GHENT 8.0 1052 PM 10/29 WEATHERNET6
KINDERHOOK 6.1 1046 PM 10/29 WEATHERNET6
NORTH CHATHAM 6.0 1054 PM 10/29 WEATHERNET6
COPAKE 6.0 700 PM 10/29 EMERGENCY MNGR
CLAVERACK 4.5 650 PM 10/29 BROADCAST MEDIA
CHATHAM CENTER 3.5 827 PM 10/29 WEATHERNET6
VALATIE 3.0 616 PM 10/29 PUBLIC

...DUTCHESS COUNTY...
MILLBROOK 17.9 906 PM 10/29 SPOTTER
PINE PLAINS 16.0 930 PM 10/29 SPOTTER
SALT POINT 4.5 811 PM 10/29 TRAINED SPOTTER

...GREENE COUNTY...
GREENVILLE 9.2 531 AM 10/30 SPOTTER
HALCOTT CENTER 8.0 836 PM 10/29 TRAINED SPOTTER
FREEHOLD 6.0 600 PM 10/29 SPOTTER
CATSKILL 3.0 644 PM 10/29 WEATHERNET6

...MONTGOMERY COUNTY...
FONDA 1.3 1116 PM 10/29 WEATHERNET6
AMSTERDAM 1.2 1055 PM 10/29 WEATHERNET6

...RENSSELAER COUNTY...
WEST STEPHENTOWN 7.0 729 PM 10/29 TRAINED SPOTTER
CENTER BRUNSWICK 4.2 1058 PM 10/29 WEATHERNET6
SCHAGHTICOKE 3.2 1100 PM 10/29 WEATHERNET6
SYCAWAY 3.2 845 PM 10/29 NWS EMPLOYEE

...SARATOGA COUNTY...
CLIFTON PARK 3.2 1220 AM 10/30 NWS EMPLOYEE
CHARLTON 2.0 1047 PM 10/29 WEATHERNET6
SARATOGA SPRINGS 0.8 1011 PM 10/29 WEATHERNET6
MILTON 0.5 945 PM 10/29 WEATHERNET6

...SCHENECTADY COUNTY...
1 NNE HAWTHORNE HILL 0.9 1125 PM 10/29 NWS EMPLOYEE

...SCHOHARIE COUNTY...
JEFFERSON 5.5 947 PM 10/29 WEATHERNET6
HUNTERSLAND 5.0 1052 PM 10/29 WEATHERNET6
RICHMONDVILLE 3.8 907 PM 10/29 WEATHERNET6
SCHOHARIE 3.5 1047 PM 10/29 WEATHERNET6
CHARLOTTEVILLE 1.2 607 PM 10/29 WEATHERNET6

...ULSTER COUNTY...
PALENTOWN 9.5 723 PM 10/29 SPOTTER
SHANDAKEN 9.0 627 PM 10/29 PUBLIC
RIFTON 8.8 1003 PM 10/29 TRAINED SPOTTER
PHOENICIA 8.0 624 PM 10/29 WEATHERNET6
WEST SHOKAN 7.5 820 PM 10/29 WEATHERNET6
WILLOW 6.1 933 PM 10/29 SPOTTER
KINGSTON 4.6 608 PM 10/29 SPOTTER
SAUGERTIES 2.8 835 PM 10/29 WEATHERNET6

...WASHINGTON COUNTY...
COSSAYUNA 1.0 1020 PM 10/29 WEATHERNET6

VERMONT

...BENNINGTON COUNTY...
LANDGROVE 3.8 1100 PM 10/29 WEATHERNET6
BENNINGTON 3.3 238 AM 10/30 SPOTTER
WOODFORD 2.5 610 PM 10/29 WEATHERNET6

...WINDHAM COUNTY...
WILMINGTON 13.0 1030 PM 10/29 WTEN


***********************6 HOUR SNOWFALL***********************

LOCATION 6 HOUR TIME/DATE COMMENTS
SNOWFALL OF
/INCHES/ MEASUREMENT

NEW YORK

...COLUMBIA COUNTY...
KINDERHOOK 4.2 851 PM 10/29 SPOTTER

...DUTCHESS COUNTY...
POUGHQUAG 7.0 611 PM 10/29 SPOTTER

...RENSSELAER COUNTY...
BRUNSWICK 2.5 750 PM 10/29 SPOTTER

...ULSTER COUNTY...
WILLOW 4.0 933 PM 10/29 SPOTTER

VERMONT

...WINDHAM COUNTY...
GRAFTON 8.0 754 PM 10/29 SPOTTER


**********************12 HOUR SNOWFALL**********************

LOCATION 12 HOUR TIME/DATE COMMENTS
SNOWFALL OF
/INCHES/ MEASUREMENT

CONNECTICUT

...LITCHFIELD COUNTY...
WINCHESTER CENTER 17.5 1020 PM 10/29 SPOTTER
NEW MILFORD 14.0 1201 AM 10/30 SPOTTER

NEW YORK

...DUTCHESS COUNTY...
POUGHQUAG 12.0 1232 AM 10/30 TRAINED SPOTTER

...ULSTER COUNTY...
WILLOW 6.1 933 PM 10/29 SPOTTER


**********************24 HOUR SNOWFALL**********************

LOCATION 24 HOUR TIME/DATE COMMENTS
SNOWFALL OF
/INCHES/ MEASUREMENT

NEW YORK

...ULSTER COUNTY...
HIGHLAND 3.3 156 AM 10/30 SPOTTER

Member Since: January 26, 2011 Posts: 0 Comments: 7
432. GTOSnow
11:44 AM GMT on October 30, 2011
Not good here in Sutton, Ma. There is a tree sitting on top of my GTO, no power and about a foot of snow to contend with. I got a generator up and running so we at least have heat and internet! I need to go assess the damage to my car, it got at least the front hood, bumper, possibly a door. I was just about in tears when I saw it in my driveway last night as I spent the last 6 years building the car!!!
Member Since: February 10, 2010 Posts: 0 Comments: 223
431. TheRasberryPatch
11:43 AM GMT on October 30, 2011
Mason - how come the NWS in their report yesterday evening they didn't mention any Cocorahs snowfall totals?
I hope they don't use my report this morning of 0.3" of snow. I measured 7.6" and reported it at 645pm yesterday and then the 0.3" for this morning.

Cocorahs needs a different way of reporting on days like yesterday. I reported at 730am the 0.08" of rain and they made me change it when I wanted to report the snowfall in the evening.
Member Since: January 26, 2007 Posts: 72 Comments: 6259
430. Mason803
11:33 AM GMT on October 30, 2011
.CLIMATE...
SNOWFALL RECORDS HAVE BEEN BROKEN AT FIRST-ORDER CLIMATOLOGICAL
STATIONS HARRISBURG AND WILLIAMSPORT. THE OFFICIAL SNOWFALL
MEASUREMENT AT THE WILLIAMSPORT/LYCOMING AIRPORT CAME IN AT ONLY 1
INCH...BUT THAT WAS ENOUGH TO SET AN OCTOBER...HEAVIEST EARLIEST
SNOWFALL THERE. THE HARRISBURG INTL AIRPORT AT MIDDLETOWN RECORDED
5 INCHES OF HEAVY WET SNOW AS OF 5 PM.

PREVIOUS OCT 29 DAILY SNOWFALL RECORDS...
HARRISBURG /KMDT/ - TRACE IN 1952. ESTIMATED 3+ INCHES SO FAR TODAY.
WILLIAMSPORT /KIPT/ - 0.2 IN 2002. ESTIMATED AROUND 1 INCH SO FAR
TODAY.

SO FAR...THE HEAVIEST SNOWFALL REPORT WAS 12.5 INCHES IN FAR WESTERN
ADAMS COUNTY...ATOP SOUTH MOUNTAIN AT AN ELEVATION AROUND 2000 FT
MSL. SIMILAR AMOUNTS OF 12.2 INCHES FELL AT LAUREL SUMMIT /APPROX
2600 FT MSL/ BY SHORTLY BEFORE 5 PM...AND IT WAS STILL SNOWING
THERE. BLUE KNOB SKI AREA AT NEARLY 3000 FT MSL IN WESTERN BLAIR
CTY ALSO RECEIVED 1 FOOT OF GOOD SNOWBALL-MAKIN SNOW. MOST VALLEY
LOCATIONS IN THE CENTRAL RIDGE AND VALLEY REGION AND ACROSS THE
LOWER SUSQ VALLEY HAD 4 TO 7 INCHES. MANY PLACES FALLING BETWEEN
1400-1800 FT MSL TO THE SOUTH OF A LINE FROM KAOO...TO KUNV...AND
KAVP PICKED UP A STORM TOTAL OF 7-10 INCHES. EVEN A SEVERAL
HUNDRED FT ELEVATION INCREASE ACROSS YORK AND LANCASTER COUNTY
/DILLSBURG AND RAWLINSVILLE/ LED TO ABOUT 10 INCHES OF SNOW /WHICH
WAS NEARLY TWICE THE AMOUNT AT LOWER ELEVATIONS/.

Member Since: November 5, 2008 Posts: 0 Comments: 1139

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Cornell University- Atmospheric Sciences Undergrad; Research Assist.- Onset of Spring Indices Toolbox; Interests- Small spatial scale climatolology

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