Unprecedented early-year heat smashes all-time records in Midwest

By: Dr. Jeff Masters , 2:04 PM GMT on March 15, 2012

Share this Blog
27
+

The first day of spring doesn't arrive until Tuesday, but Mother Nature has fast-forwarded past spring and gone straight to summer over the Midwest. Yesterday, large portions of Michigan, Illinois, Wisconsin, Minnesota, and Indiana recorded their all-time warmest temperatures for so early in the year, including the cities of Chicago, Minneapolis, Indianapolis, Milwaukee, and Lansing. Temperature records for these cities go back as far as 1863. Perhaps the most extraordinary record was set in Traverse City, Michigan, which hit 81°F--a temperature 42°F above the average high for the date, and four degrees warmer than any previous day so early in the year. Records go back to 1897 in the city.


Figure 1. Spring has arrived early in Sherrard, Illinois, and much of the Midwest, thanks to a record-breaking March heat wave. Image credit: wunderphotographer JourneysEnd.

Major airports that set all-time heat records yesterday

Chicago, Illinois hit 81°F; the warmest it's ever been this early in the year, going back to 1872, and 35°F above average. This ties the record set on March 12, 1990.

Springfield, Illinois hit 83°F, the warmest it's ever been this early in the year, going back to 1879, and 32°F above average. This ties the record of 83°F on March 13, 1918.

Rockford, Illinois hit 79°F, the warmest it's ever been this early in the year, going back to 1893, and 33°F above average. Previous record: 78°F on March 7, 2000.

Peoria, Illinois hit 81°F, the warmest it's ever been this early in the year, going back to 1883, and 31°F above average. Previous record: 80°F on March 12, 1990.

Minneapolis, Minnesota hit 73°F, the warmest it's ever been this early in the year, going back to 1872, and 33°F above average. This ties the 73°F reading of March 7, 2000.

Grand Rapids, Michigan hit 80°F, the warmest it's ever been this early in the year, going back to 1892, and 37 degrees above average. Previous record: 78°F on March 8, 2000.

Muskegon, Michigan hit 77°F, the warmest it's ever been this early in the year, going back to 1896, and 35°F above average. Previous record: 73°F on March 8, 2000.

Traverse City, Michigan hit 81°F, the warmest it's ever been this early in the year, going back to 1897, and 42°F above average. Previous record: 77°F on March 7, 2000.

Lansing, Michigan hit 79°F, the warmest it's ever been this early in the year, going back to 1863, and 36°F above average. This ties the record of 79°F on March 8, 2000.

Indianapolis, Indiana hit 81°F, the warmest it's ever been this early in the year, going back to 1871, and 30°F above average. Previous record: 80°F on March 8, 1974 and March 13, 2007.

South Bend, Indiana hit 81°F, the warmest it's ever been this early in the year, going back to 1893, and 35°F above average. Previous record: 80°F on March 8, 2000.

Evansville, Indiana hit 82°F, the warmest it's ever been this early in the year, going back to 1871, and 25°F above average. This ties the record of 82°F set on March 10, 1990.

Milwaukee, Wisconsin hit 78°F, the warmest it's ever been this early in the year, going back to 1869, and 36°F above average. Previous record: 77°F on March 7 and 8, 2000.

Madison, Wisconsin hit 78°F, the warmest it's ever been this early in the year, going back to 1869, and was 36°F above average. Previous record: 77°F on March 8, 2000.

Green Bay, Wisconsin hit 75°F, the warmest it's ever been this early in the year, going back to 1886, and 37°F above average. Previous record: 74°F on March 8, 2000.

Dubuque, Iowa hit 75°F, the warmest it's ever been this early in the year, going back to 1874, and 37°F above average. This ties the 75°F reading of March 12, 1990.

Data for the previous records was taken from NOAA's National Climatic Data Center (NCDC).

Why the record early-season warmth?
The unusual warmth is due to a loop in the jet stream that has created a large upper-level ridge of high pressure that is stuck in place over the Eastern U.S.--a phenomenon known as a "blocking pattern." Since the jet stream acts as the boundary between cold air to the north and warm air to the south, and the large loop in the jet places its axis far to the north of the eastern U.S., summer-like warmth has developed over the eastern half of the U.S. Conversely, colder than average temperatures have developed over the western third of the U.S. behind the southwards-dipping loop of the jet stream. There are at least three large-scale patterns working together right now to create an unusually strong high-pressure ridge over the eastern half of the U.S.:

1) La Niña. The on-going La Niña event in the Eastern Pacific has weakened considerably over the past month, but ocean temperatures there are still cool enough to affect the jet stream pattern, favoring high pressure and warm temperatures over the Eastern U.S., and low pressure and cold temperatures over the Western U.S.

2) The Madden-Julian Oscillation( MJO). The MJO is a 2-month cycle of thunderstorm activity that travels west to east along the Equator. The MJO is currently in phase with La Niña, and is helping create warmer temperatures over the Eastern U.S.

3) The North Atlantic Oscillation (NAO.) The NAO is in its positive phase, which means the difference in pressure between the Icelandic Low and the Azores High is stronger than usual. This tends to increase the jet stream winds and keeps the jet from sagging southwards over the Eastern U.S.

While the blocking pattern responsible for the heat wave is natural, it is improbable that the intensity of the heat would have been so great unless we were in a warming climate. Climate scientist Dr. James Hansen has posted an interesting (as yet unpublished) paper discussing how the odds of such extreme heat events have shifted in recent years. I plan to discuss these concepts in more detail next week.


Figure 2. Predicted high temperatures for Thursday, March 15, 2012 over much of the Midwest are more typical of June than March.

The forecast
The summer-like heat continues today over the Midwest, with the greatest departures from average (30°+) expected over Wisconsin, Iowa, Illinois, Indiana, and Michigan. This area of 30°+ above average temperatures will expand to stretch from South Dakota to New York on Sunday and Monday, then gradually shift eastwards, extending from Wisconsin to Maine by Wednesday. The jet stream loop is predicted to grow more pronounced this weekend, and reach a truly extreme configuration on Monday and Tuesday. On those days, the predicted strength of the upper-level ridge of ridge pressure along the northern tier of states, from Wisconsin to Maine, will be typical of what we see at the height of summer, during July and August. The GFS and ECMWF models are predicting the height at where a pressure of 500 mb is found will range between 5760 - 5800 meters on those days--7% higher than the typical mid-March 500 mb heights of 5460 meters. Record-breaking summer-like temperatures will last until at least Friday, March 23, for much of the Midwest and Northeast U.S.

Extreme jet stream patterns like this often lead to tornado outbreaks in the Midwest, at the boundary of where warm, moist air flowing north from the Gulf of Mexico collides with cold, dry air flowing south. Cold dry air aloft, combined with warm, moist air at the surface, makes the atmosphere unstable, since air rising in thunderstorm updrafts will be less dense than the surroundings, allowing the air to accelerate upwards and increase the intensity of the thunderstorm. This will be the case on Sunday, when NOAA's Storm Prediction Center has highlighted a potential risk area for severe weather from Texas northwards through Nebraska. Fortunately, the winds of the jet stream are expected to blow almost due south to north over the region by Monday, which may limit the amount of cold air aloft that can overrun the warm air at the surface, resulting in a more stable atmosphere and a reduced chance of severe weather compared to Sunday.

Jeff Masters

()
in bloom today (TroyA2)
in bloom today

Reader Comments

Comments will take a few seconds to appear.

Post Your Comments

Please sign in to post comments.

or Join

Not only will you be able to leave comments on this blog, but you'll also have the ability to upload and share your photos in our Wunder Photos section.

Display: 0, 50, 100, 200 Sort: Newest First - Order Posted

Viewing: 493 - 443

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14Blog Index

463. Quoting WxGeekVA:
Anyone who says 42 degrees above average is a "normal variation in weather patterns" needs a psychologist to examine them.

Doc M wrote: Traverse City, Michigan which hit 81F--a temperature 42F above average, and four degrees warmer than any previous day so early in the year. Records go back to 1897 in the city.

What I'm not understanding is this: What is the reason for a comparison between a high temp reading and an average temp which includes low temps? 81 minus 42, so 39 is average temp for Mar 14 in Traverse City, MI? Four degrees warmer than any previous day occurring through March 14, even for all the years going back to 1897, doesn't sound quite so ominous.

But then, maybe I need a psychologist.
:)
Member Since: Posts: Comments:
Quoting TropicalAnalystwx13:
EF3 to EF4.



you dont happen to have an image of that from a side veiw does you
Member Since: Posts: Comments:
From the National Hurricane Center TWD this afternoon

THIS IS THE SAME TROUGH THAT COVERED THE
BAHAMAS...SOUTHEASTERN CUBA...AND THE WINDWARD PASSAGE 24 HOURS
AGO. A SURFACE TROUGH HAS MOVED ACROSS FLORIDA FROM EAST TO WEST
DURING THE LAST SIX HOURS OR SO. THE SURFACE TROUGH RUNS FROM
26N81W IN SOUTH FLORIDA TO WESTERN CUBA NEAR 22N83W. VISIBLE
SATELLITE IMAGERY SHOWS A SMALL-SCALE CYCLONIC VORTEX IN THE LOW
CLOUDS THAT IS IN THE FLORIDA STRAITS NEAR 24N82W.
RAINSHOWERS
ARE POSSIBLE FROM 22N TO 24N BETWEEN 82W AND 88W. RETURN SURFACE
SOUTHEASTERLY-TO-SOUTHERLY WIND FLOW IS EVIDENT IN THE LOW CLOUD
FIELD TO THE WEST OF 85W. A SURFACE RIDGE PASSES THROUGH 31N88W
ALONG THE BORDER OF SOUTHWESTERN GEORGIA AND SOUTHEASTERN
MISSISSIPPI...INTO THE WEST CENTRAL GULF WATERS...AND EVENTUALLY
INTO THE SOUTHWESTERN CORNER OF THE AREA.
Member Since: July 3, 2005 Posts: 428 Comments: 129796
Quoting PlazaRed:

You have not had much winter weather this year as well and now, Scandinavia is heading into summer without going through spring?

Not quite yet. Yes we did not have much winter and it will be interesting to see how the next few months will be.
Member Since: November 22, 2010 Posts: 0 Comments: 1281
489. Skyepony (Mod)
12ZCMC has a TD for Central Bahamas in like 3 days that dies in Cuba.. That bit of energy there made me check the models..hhmmm.
Member Since: Posts: Comments:

15 Mar 2012 23:40 UTC [1 km resolution]

Image centered at Latitude= 42.16° N Longitude= 83.77° W (X=306 Y=125)

Member Since: July 3, 2005 Posts: 428 Comments: 129796
Quoting GeorgiaStormz:
Justin Ryan:

I am proud to be Detroit’s only full-time meteorologist to hold the AMS Certified Broadcast Meteorologist seal of approval; as well as being the youngest meteorologist in the nation to be accredited with this prestigious honor.


I was a meteorologist on the Connecticut shoreline for News12 Connecticut

I created maps, graphics and forecasts at both WNBC and WNYW in New York.

I even have some radio to my credit, working on the Jersey Shore at 94-3 The Point, as well as Magic 97.9 in Huntington, WV.

I graduated from Kean University, in New Jersey with dual bachelor’s degrees in Meteorology and Broadcasting.
Yah the guy thats on right now is not him my bad.
Member Since: July 22, 2010 Posts: 1 Comments: 3852
Member Since: July 3, 2005 Posts: 428 Comments: 129796


Member Since: July 15, 2006 Posts: 178 Comments: 55984


Member Since: July 3, 2005 Posts: 428 Comments: 129796
Justin Ryan:

I am proud to be Detroit’s only full-time meteorologist to hold the AMS Certified Broadcast Meteorologist seal of approval; as well as being the youngest meteorologist in the nation to be accredited with this prestigious honor.


I was a meteorologist on the Connecticut shoreline for News12 Connecticut

I created maps, graphics and forecasts at both WNBC and WNYW in New York.

I even have some radio to my credit, working on the Jersey Shore at 94-3 The Point, as well as Magic 97.9 in Huntington, WV.

I graduated from Kean University, in New Jersey with dual bachelor’s degrees in Meteorology and Broadcasting.
Member Since: Posts: Comments:
Presentation from HRD Monthly Modeling Meeting of March 2012

2012 HWRF Upgrades

ZIP Archive file you will need to download to your computer, unzip and view in Powerpoint.
Member Since: Posts: Comments:
Quoting dogsgomoo:


I've noticed that some channels have certain mets for when severe weather is predicted, and therefor expertise is required. When nothing much is supposed to happen they have the "backbenchers" for lack of a better word? Is that common or just my impression?
Yes I think that's it. This may not be Justin Ryan.
Member Since: July 22, 2010 Posts: 1 Comments: 3852
Judging by the pictures, I would say this was an EF3, but could very well have been an EF2 or EF4.

I'm going to say...140 mph.

Final answer.
Member Since: July 6, 2010 Posts: 113 Comments: 32807
Quoting hurricanehunter27:
Reading his bio right now that pretty much what he is.


I've noticed that some channels have certain mets for when severe weather is predicted, and therefor expertise is required. When nothing much is supposed to happen they have the "backbenchers" for lack of a better word? Is that common or just my impression?
Member Since: Posts: Comments:
rotation starting S of lapeer, and the damage may be worse because the storms were moving slowly, i say ef-3.

ef-3 can destroy houses
Member Since: Posts: Comments:
Quoting Slamguitar:


What's his name?
Justin Ryan
Member Since: July 22, 2010 Posts: 1 Comments: 3852
If the Dexter tornado was an EF-3, it'll be only the ninth March EF-3 or stronger twister ever recorded in Michigan. If it was an EF-4, it'll be only the second of that category in March (a March 20, 1976, F4 near Oakland killed one person and injured dozens). It'll will also be the earliest EF-3 or stronger ever in that state (none of the previous ones have occcurred prior to March 20). Source
Member Since: November 8, 2009 Posts: 4 Comments: 13796
Quoting hurricanehunter27:
Reading his bio right now that pretty much what he is.


What's his name?
Member Since: Posts: Comments:
Quoting Slamguitar:


Probably a communication major that took a few met classes. Haha.
Reading his bio right now that pretty much what he is.
Member Since: July 22, 2010 Posts: 1 Comments: 3852
Quoting hurricanehunter27:
I'm going to do some research on Detroit's met. He seems like he barley knows what he is talking about. All he has shown is that he knows the basics.


Probably a communication major that took a few met classes. Haha.
Member Since: Posts: Comments:
well look what we have here, a semi strong cold front going all the way through the SE.
In 1 or 2 days, it is right back to where we are now, though.



I wonder if this means the system is stronger than previously thought.
Member Since: Posts: Comments:
Darkness will be descending in the Damaged areas where power is most likely out for a lot of folks.

Check on your elderly and those who may be in shock as this is a unusual and evidently wide spread impact for many folks not used to these events.

Help where you can, stay out if you cant.
Member Since: July 3, 2005 Posts: 428 Comments: 129796
I'm going to do some research on Detroit's met. He seems like he barley knows what he is talking about. All he has shown is that he knows the basics.
Member Since: July 22, 2010 Posts: 1 Comments: 3852
22 degre drop in two hr 11 degrees per hr
Member Since: July 15, 2006 Posts: 178 Comments: 55984
EF3 to EF4.

Member Since: July 6, 2010 Posts: 113 Comments: 32807
Later guys
Member Since: November 6, 2010 Posts: 12 Comments: 8468
S.E. Michigan Tornados 3-15-2012_0001.wmv


NOT LIVE,


Member Since: July 3, 2005 Posts: 428 Comments: 129796
Toronto Pearson Int'l Airport
Date: 7:00 PM EDT Thursday 15 March 2012
Condition: Cloudy
Pressure: 30.03 inches
Tendency: falling
Visibility: 15 miles
Air Quality Health Index: 4

Temperature: 47.8°F
Dewpoint: 40.5°F
Humidity: 75 %
Wind: SSE 6 mph



the forecasted low for tonight is 52 5almost 6 degrees colder than forecasted for overnight lows
Member Since: July 15, 2006 Posts: 178 Comments: 55984
Uploaded by annarborcom on Mar 15, 2012


This footage, taken by a reader on the afternoon of March 15, 2012, and submitted to AnnArbor.com, shows a tornado hitting the Dexter area near Hudson Mills Metropark.


again, note: Graphic Language


Member Since: July 3, 2005 Posts: 428 Comments: 129796
Quoting WxGeekVA:
Anyone who says 42 degrees above average is a "normal variation in weather patterns" needs a psychologist to examine them. Especially because it isn't just one place on one day. It's multiple places on multiple days.

I still can't find anything good about this warmth (except that it is really pleasant to be outside in...

Where are the climate change denialists now? Wait.... that's right! They're outside enjoying the warmth!

Oh the irony.....

Mark my words: Law of Physics: each action has an equal and opposite reaction. We may not be complaining now, but we are soooooo going to regret what is going on right now in the short-term future...

As my mom always told me: "You make the bed, you lie in it too". And boy, have we made a bad bed to lie in.

2012, my friends. We will be seeing shortly the results of our actions in the last 100 years.

68 and sunny at 11 AM on March 15th in Fairfax, VA


A quick repost for those who missed it earlier...

It's only just begun...
Member Since: Posts: Comments:
Quoting ProgressivePulse:



Interesting feature nonetheless, thanks for your input. There was a low level swirl heading west through the straights today that made me question.


Yeah it is interesting, there are also a few isolated storms around up here in Central Florida despite the fact that there wasn't any mention of rain in the forecast.

What is also strange is that forecast numbers have been way too conservative on the warmth, for example, both here and at Tampa its been in the mid to upper 80's the past several days now but they keep forecasting highs mainly low 80's through extended despite that the pattern will remain the same.

If anything temps will warm slightly through the period as water temps increase from the warm pattern, and also just because heat tends to build upon itself beneath the strong "dome" of high pressure similar to how heat builds with the lid on a pot.

Anyways, its amazing we are seeing ANY convection at all considering the strong ridge overhead and because its March. If La Nina hurries up and fades away we might see a nice early start to the rain season, especially if El Nino replaces it.
Member Since: Posts: Comments:
Member Since: July 3, 2005 Posts: 428 Comments: 129796


The NHC is a fine place to see the current Overview, and synopsis
Member Since: July 3, 2005 Posts: 428 Comments: 129796
Welcome to almost Spring 2012..

get yer Maps and TWO's ready to roll.
Member Since: July 3, 2005 Posts: 428 Comments: 129796
Quoting Patrap:
Welcome to the Ides of March 2012


I was going to say that

BEWWWAAAAARRRRREEEEEEEEEE.
Member Since: Posts: Comments:
Quoting Jedkins01:



I don't know about tropical wave :) there was certainly some healthy shower and storm coverage down there today but I would expect a lot more with a T-wave, especially with early spring colder air aloft.


Ridging is too strong and moisture too low for there to be a tropical wave there.




Interesting feature nonetheless, thanks for your input. There was a low level swirl heading west through the straights today that made me question.
Member Since: Posts: Comments:



..from the Atlantic Tropical Weather Discussion

THE GULF OF MEXICO...

UPPER LEVEL NORTHWESTERLY WIND FLOW MOVES ACROSS MEXICO AND
TEXAS...AND ACROSS THE ENTIRE AREA OF THE GULF OF MEXICO.
PART OF THE OVERALL LARGE-SCALE NORTHWESTERLY WIND FLOW MERGES/
COMBINES WITH SEPARATE AND INDEPENDENT CYCLONIC FLOW THAT IS
ON THE WESTERN SIDE OF AN ATLANTIC OCEAN MIDDLE LEVEL TO UPPER
LEVEL TROUGH. THIS IS THE SAME TROUGH THAT COVERED THE
BAHAMAS...SOUTHEASTERN CUBA...AND THE WINDWARD PASSAGE 24 HOURS
AGO. A SURFACE TROUGH HAS MOVED ACROSS FLORIDA FROM EAST TO WEST
DURING THE LAST SIX HOURS OR SO. THE SURFACE TROUGH RUNS FROM
26N81W IN SOUTH FLORIDA TO WESTERN CUBA NEAR 22N83W. VISIBLE
SATELLITE IMAGERY SHOWS A SMALL-SCALE CYCLONIC VORTEX IN THE LOW
CLOUDS THAT IS IN THE FLORIDA STRAITS NEAR 24N82W.
RAINSHOWERS
ARE POSSIBLE FROM 22N TO 24N BETWEEN 82W AND 88W. RETURN SURFACE
SOUTHEASTERLY-TO-SOUTHERLY WIND FLOW IS EVIDENT IN THE LOW CLOUD
FIELD TO THE WEST OF 85W. A SURFACE RIDGE PASSES THROUGH 31N88W
ALONG THE BORDER OF SOUTHWESTERN GEORGIA AND SOUTHEASTERN
MISSISSIPPI...INTO THE WEST CENTRAL GULF WATERS...AND EVENTUALLY
INTO THE SOUTHWESTERN CORNER OF THE AREA.
Member Since: July 3, 2005 Posts: 428 Comments: 129796
Quoting ClimateChange:


I disagree. An airmass this warm in mid-March is simply not possible in the absence of a high-CO2 atmosphere. The duration and extent of this air mass is unprecedented. Temperatures in southeast Michigan were in the mid to upper 70s, with dewpoints in the lower 60s. These temperatures and humidity levels, more characteristic of June than March, combined to produce extreme instability.
we get to see more yet we have till wed of next week to get more of the same weather maybe even warmer then we have seen so far
Member Since: July 15, 2006 Posts: 178 Comments: 55984
Quoting TropicalAnalystwx13:

There was a discussion on that yesterday, it is an easterly wave.


Thanks ;-)
Member Since: Posts: Comments:
Quoting ProgressivePulse:
Sorry to post off topic but, if I didn't know any better I would swear a TWave passed through the FL peninsula today. Wave like appearance on satellite as well.

Stay safe in these storms this evening.



I don't know about tropical wave :) there was certainly some healthy shower and storm coverage down there today but I would expect a lot more with a T-wave, especially with early spring colder air aloft.


Ridging is too strong and moisture too low for there to be a tropical wave there.

Member Since: Posts: Comments:

200
WUUS53 KDTX 152326
SVRDTX
MIC017-160015-
/O.NEW.KDTX.SV.W.0026.120315T2326Z-120316T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
726 PM EDT THU MAR 15 2012

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN BAY COUNTY IN SOUTHEAST MICHIGAN...

* UNTIL 815 PM EDT

* AT 722 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
ESSEXVILLE...OR NEAR BAY CITY...AND MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
MUNGER AROUND 735 PM EDT.

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
MUNGER... ESSEXVILLE... BAY CITY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.



LAT...LON 4370 8392 4369 8391 4367 8389 4365 8383
4359 8370 4348 8370 4348 8382 4352 8382
4352 8392
TIME...MOT...LOC 2325Z 296DEG 16KT 4359 8381
WIND...HAIL 60MPH 1.00IN
Member Since: July 3, 2005 Posts: 428 Comments: 129796
AT 717 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR DUNDEE...MOVING SOUTHEAST AT 30 MPH. RECENT
RADAR TRENDS SHOW ROTATION STRENGTHENING WITH THIS STORM. A TORNADO
COULD DEVELOP AT ANY TIME
Member Since: Posts: Comments:
Welcome to the Ides of March 2012
Member Since: July 3, 2005 Posts: 428 Comments: 129796
Quoting ProgressivePulse:
Sorry to post off topic but, if I didn't know any better I would swear a TWave passed through the FL peninsula today. Wave like appearance on satellite as well.

Stay safe in these storms this evening.

There was a discussion on that yesterday, it is an easterly wave.
Member Since: July 6, 2010 Posts: 113 Comments: 32807
The northern storm has weak rotation, the southern one is hooking but is now weakening it seems.

This summertime airmass cant keep these storms going.
Member Since: Posts: Comments:
Quoting ProgressivePulse:
Sorry to post off topic but, if I didn't know any better I would swear a TWave passed through the FL peninsula today. Wave like appearance on satellite as well.

Stay safe in these storms this evening.


Not off topic as long as it's weather. ;)
Member Since: Posts: Comments:
Member Since: July 3, 2005 Posts: 428 Comments: 129796
The water vapor loop for the central U.S. shows an unusual upper level disturbance, moving in a clockwise fashion.

It's almost like an anti-derecho, if that makes any sense. I can't recall seeing a disturbance that looked like this before, at least not in recent memory.

Any one else think this is an odd ball upper level disturbance, south of Michigan?

Clearly, Michigan has strong flow from the west in the upper, but what is going on south of Michigan?
Member Since: Posts: Comments:
Sorry to post off topic but, if I didn't know any better I would swear a TWave passed through the FL peninsula today. Wave like appearance on satellite as well.

Stay safe in these storms this evening.
Member Since: Posts: Comments:
Quoting TheOnlyBravesFan:


Ummm okay. People of Dexter, I wish I could help you out, but since you help contribute to global warming, I can't.

(sarcasm on btw)

It's not globally-warmed over just michigan southward... the air to the north is cool enough to cause hail to form.


I disagree. An airmass this warm in mid-March is simply not possible in the absence of a high-CO2 atmosphere. The duration and extent of this air mass is unprecedented. Temperatures in southeast Michigan were in the mid to upper 70s, with dewpoints in the lower 60s. These temperatures and humidity levels, more characteristic of June than March, combined to produce extreme instability.
Member Since: September 8, 2011 Posts: 8 Comments: 245

Viewing: 493 - 443

Page: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14Blog Index

Top of Page

About

Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

Local Weather

Overcast
29 °F
Overcast

JeffMasters's Recent Photos

Lake Effort Snow Shower Over Windsor, Ontario
Sunset on Dunham Lake
Pictured Rocks Sunset
Sunset on Lake Huron