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Category 6 has moved! See the latest from Dr. Jeff Masters and Bob Henson here.

Wunderground launches high-definition radar product

By: Dr. Jeff Masters, 2:46 PM GMT on December 15, 2008

The Terminal Doppler Weather Radar (TDWR) is an advanced technology weather radar deployed near 45 of the larger airports in the U.S. The radars were developed and deployed by the Federal Aviation Administration (FAA) beginning in 1994, as a response to several disastrous jetliner crashes in the 1970s and 1980s caused by strong thunderstorm winds. The crashes occurred because of wind shear--a sudden change in wind speed and direction. Wind shear is common in thunderstorms, due to a downward rush of air called a microburst or downburst. The TDWRs can detect such dangerous wind shear conditions, and have been instrumental in enhancing aviation safety in the U.S. over the past 15 years. The TDWRs also measure the same quantities as our familiar network of 148 NEXRAD WSR-88D Doppler radars--precipitation intensity, winds, rainfall rate, echo tops, etc. However, the newer Terminal Doppler Weather Radars are higher resolution, and can "see" details in much finer detail close to the radar. This high-resolution data has generally not been available to the public until now. Thanks to a collaboration between the National Weather Service (NWS) and the FAA, the data for all 45 TDWRs will be made available in real time over the next few months via a free satellite broadcast (NOAAPORT). Six radar sites are already available (Figure 1), and the remaining radars will be added by June 2009. I'm pleased to announce that the Weather Underground is now making the TDWR data available to the public, and will be adding new sites as they become available. We're calling them "High-Def" stations on our NEXRAD radar page. The six TDWR sites available so far are:

Detroit, MI
Cleveland, OH
Fort Lauderdale, FL
Miami, FL
West Palm Beach, FL
Newark, NJ

Since thunderstorms are uncommon along the West Coast and Northwest U.S., there are no TDWRs in California, Oregon, Washington, Montana, or Idaho.


Figure 1. The network of 45 Terminal Doppler Weather Radar (TDWR) stations in the U.S.

Summary of the TDWR products
The TDWR products are very similar to those available for the traditional WSR-88D NEXRAD sites. There is the standard radar reflectivity image, available at each of three different tilt angles of the radar, plus Doppler velocity of the winds in precipitation areas. There are 16 colors assigned to the short range reflectivity data (same as the WSR-88Ds), but 256 colors assigned to the long range reflectivity data and all of the velocity data. Thus, you will see up to 16 times as many colors in these displays versus the corresponding WSR-88D display, giving much higher detail of storm features. The TDWRs also have storm total precipitation available in the standard 16 colors like the WSR-88D has, or in 256 colors (the new "Digital Precipitation" product). Note, however, that the TDWR rainfall products generally underestimate precipitation, due to attenuation problems (see below). The TDWRs also have such derived products as echo height, vertically integrated liquid water, and VAD winds. These are computed using the same algorithms as the WSR-88Ds use, and thus have no improvement in resolution.

Improved horizontal resolution of TDWRs
The TDWR is designed to operate at short range, near the airport of interest, and has a limited area of high-resolution coverage--just 48 nm, compared to the 124 nm of the conventional WSR-88Ds. The WSR-88Ds use a 10 cm radar wavelength, but the TDWRs use a much shorter 5 cm wavelength. This shorter wavelength allow the TDWRs to see details as small as 150 meters along the beam, at the radar's regular range of 48 nm. This is nearly twice the resolution of the NEXRAD WSR-88D radars, which see details as small as 250 meters at their close range (out to 124 nm). At longer ranges (48 to 225 nm), the TDWRs have a resolution of 300 meters--more than three times better than the 1000 meter resolution WSR-88Ds have at their long range (124 to 248 nm). The angular (azimuth) resolution of the TDWR is nearly twice what is available in the WSR-88D. Each radial in the TDWR has a beam width of 0.55 degrees. The average beam width for the WSR-88D is 0.95 degrees. At distances within 48 nm of the TDWR, these radars can pick out the detailed structure of tornadoes and other important weather features (Figure 2). Extra detail can also been seen at long-ranges, and the TDWRs should give us more detailed depictions of a hurricane's spiral bands as it approaches the coast.


Figure 2. View of a tornado taken by conventional WSR-88D NEXRAD radar (left) and the higher-resolution TDWR system (right). Using the conventional radar, it is difficult to see the hook-shape of the radar echo, while the TDWR clearly depicts the hook echo, as well as the Rear-Flank Downdraft (RFD) curling into the hook. Image credit: National Weather Service.

No change to time resolution
Like the old NEXRAD data, the new TDWR data will update once every six minutes. The NWS advertises that the TDWR data will be sent out within one minute of when it is measured. The TDWR does scan the atmosphere once per minute at the lowest elevation angle of the radar, but unfortunately, there are no plans to make this rapid scan data available via the free public NOAAPORT feed.

Attenuation problems
The most serious drawback to using the TDWRs is the attenuation of the signal due to heavy precipitation falling near the radar. Since the TDWRs use the shorter 5 cm wavelength, which is closer to the size of a raindrop than the 10 cm wavelength used by the traditional WSR-88Ds, the TDWR beam is more easily absorbed and scattered away by precipitation. This attenuation means that the radar cannot "see" very far through heavy rain. It is often the case that a TDWR will completely miss seeing tornado signatures when there is heavy rain falling between the radar and the tornado. Hail causes even more trouble (Figure 3). Thus, it is best to use the TDWR in conjunction with the traditional WSR-88D radar to insure nothing is missed.


Figure 3. View of a squall line (left) taken using a TDWR (left column) and a WSR-88D system. A set of three images going from top to bottom show the squall line's reflectivity as it approaches the TDWR radar, moves over the TDWR, than moves away. Note that when the heavy rain of the squall line is over the TDWR, it can "see" very little of the squall line. On the right, we can see the effect a strong thunderstorm with hail has on a TDWR. The radar (located in the lower left corner of the image) cannot see much detail directly behind the heavy pink echoes that denote the core of the hail region, creating a "shadow". Image credit: National Weather Service.

Range unfolding and aliasing problems
Another serious drawback to using the TDWRs is the high uncertainty of the returned radar signal reaching the receiver. Since the radar is geared towards examining the weather in high detail at short range, echoes that come back from features that lie at longer ranges suffer from what is called range folding and aliasing. For example, for a thunderstorm lying 48 nm from the radar, the radar won't be able to tell if the thunderstorm is at 48 nm, or some multiple of 48 nm, such as 96 or 192 nm. In regions where the software can't tell the distance, the reflectivity display will have black missing data regions extending radially towards the radar (Figure 4). Missing velocity data will be colored pink and labeled "RF" (Range Folded). In some cases, the range folded velocity data will be in the form of curved arcs that extend radially towards the radar.


Figure 4. Typical errors seen in the velocity data (left) and reflectivity data (right) when range folding and aliasing are occurring. Image credit: National Weather Service.

Ground clutter problems
Since the TDWRs are designed to alert airports of low-level wind shear problems, the radar beam is pointed very close to the ground and is very narrow. The lowest elevation angle for the TDWRs ranges from 0.1° to 0.3°, depending upon how close the radar is to the airport of interest. In contrast, the lowest elevation angle of the WSR-88Ds is 0.5°. As a result, the TDWRs are very prone to ground clutter from buildings, water towers, hills, etc. Many radars have permanent "shadows" extending radially outward due to nearby obstructions. The TDWR software is much more aggressive about removing ground clutter than the WSR-88D software is. This means that real precipitation echoes of interest will sometimes get removed.

For more information
For those of you who are storm buffs that will be regularly using the new TDWR data, I highly recommend that you download the three Terminal Doppler Weather Radar (TDWR) Build 3 Training modules. These three Flash files, totaling about 40 Mb, give one a detailed explanation of how TDWRs work, and their strengths and weaknesses. There is also a full product documentation guide available. I'll be adding the info in this blog entry into the radar help link available on each of our radar pages.

No Atlantic named storm likely this week
The models continue to indicate an extratropical storm that has the potential to evolve into a named subtropical storm will form in the middle Atlantic by Thursday. However, it now appears that there will be too much wind shear for Subtropical Storm Rene to form out of this system.

I'm in San Francisco this week for the annual meeting of the American Geophysical Union, the world's largest climate change conference. I'll be posting daily "post cards" from the conference this week.

Jeff Masters

Tornado

The views of the author are his/her own and do not necessarily represent the position of The Weather Company or its parent, IBM.

Reader Comments

Thanks Doc.

Been viewing that new radar since it appeared on WU last week. Neat stuff and I am lucky to have one close by that covers my area.

Greatly appreciate the explanations because it did seem that there was quite a diff between traditional and the hi-def. Good to know the limitations.
Thank you, thank you for the TDWR info Dr. Masters!

I have been fooling with the new ones here in South Florida the past week.

Too bad we don't get one in southern CA... although usually we just have a massive cold front (like right now), or no rain at all (95% of the time)
Its good to see the strong focus on south fl with the new radar coverage. I'm sure the hurricane researchers are loving the new data sets these radars provide and statistically south fl is the best place in the us to put land based sensing devices as far as tropical cyclone data is concerned.
Great to see this new data and it's product suite available on a public site. I was employed by the research lab that developed the TDWR and actively involved in the algorithm fine-tuning for many years. It has been in use by the FAA for wind shear detection and the like for probably a decade, but getting access to the data in the public realm has been a long time coming. One of my mentors, who has unfortunately passed away now, was part of the original TDWR development team. Thanks for this post, Dr. Masters, and for WU jumping onboard to provide this data to the weather community.
Good morning... and Thx Doc.

Always good to have more tools in your arsenal. :P
Cool to know how it all works and what the current limits are. Thank you.
I wonder why the southeast FL coast got all their radars released to the public in the first wave?
Too bad Jacksonville and Charleston SC aren't getting the new upgraded radar.
stsimon-Yeah, I'm feeling kinda left out over here on the gulf coast too.

None coming on the entire west coast either.
Nice WU! Will look forward to ATL and DFW added, as well as other hubs.
Hello everyone! I am currently working on my Blog as some of you can tell. I am making each MAP and GRAPHIC INTERACTIVE.....go to my blog an click on the Airport Delays to see what i am doing..
I wonder why it says 7 comments when there were 13 comments before this one. The number didn't go up when I entered my comments earlier either. I wonder what that means.
Just stopping by to check up on everyone. Been quite some time since I last visited the blogs. Been having a rough semester that just came to an end last Thursday.

Anyways, yet another well-written and impeccable blog post by Dr. Masters. Will be looking forward to using this new radar technology to track thunderstorms here in South Florida come the spring. Seems like the resolution will be much better and this new radar technology will provide so much more data.

By the way, it seems like all the computer models are onboard with brief subtropical development in the Central Atlantic before wind shear takes control. Will be watching this region throughout the week in case.

If you have been visiting my site within the past month, I apologize for not having updated it for quite some time. Just been really busy with finals and trying to overcome some emotional hurdles that have come over the past couple months. This morning, I did a full update on my site.

Well, thanks for the update Dr. Masters and hope everyone has a great holiday season. I will be stopping in from time to time during the "offseason".
When I see words like "Attenuation", my mind tends to drift and I can't finish the blog entry.

Anyone got an Idiot's guide to fancy new radars?
Tropical Cyclone Advisories #30 (1800z 15DEC)
=================================================

Subject: CATEGORY THREE TYPHOON EAST OF THE PHILIPPINES

At 3:00 AM JST, Typhoon Dolphin (970 hPa) located near 15.5N 130.5E has 10 minute sustained winds of 65 knots with gusts up to 95 knots. The cyclone is reported as moving north at 6 knots.

Storm Force Winds
================
60 NM from the center

Gale-force Winds
================
240 NM from the center in north quadrant
180 NM from the center in south quadrant

Dvorak Intensity: T4.5 - Stronger than 65 kts.. wonder why JMA kept the wind speed for 4.0 then.

Forecast and Intensity
=====================
24 HRS: 17.2N 130.4E - 60 knots (CAT 2)
48 HRS: 18.8N 131.6E - 50 knots (CAT 2)
72 HRS: 19.4N 132.7E - 40 knots (CAT 1)

Philippines Atmospherical Geophysical Astronomical Services and Administration

Typhoon "ULYSSES" has gained more strength as it moves northwestward slowly.

Tropical Cyclone Bulletin #6 (1500z)
==============================
At 11:00 PM PhST, Typhoon Ulysses (DOLPHIN) located at 15.1°N 130.2ºE or 620 km east-northeast of Virac, Catanduanes has 10 minute sustained winds of 130 km/h (70 knots) with gustiness up to 160 km/h (85 knots).

Additional Information
=======================
This disturbance is still far to affect any part of the country.
Mauritius Meteorological Services
Tropical Cyclone Warning Number ONE
ZONE PERTURBEE 04-20082009
12:00 PM UTC December 15 2008
======================================

At 12:00 PM UTC, Area of Disturbed Weather (1003 hPa) located at 9.4S 69.8E has 10 minute sustained winds of 20 knots with gust of 30 knots. The disturbance is reported as moving west-southwest at 5 knots.

Dvorak Intensity: T1.5

Forecast and Intensity
=========================
24 HRS: 10.2S 66.1E - 30 knots (DEPRESSION TROPICALE)
48 HRS: 10.7S 63.4E - 30 knots (DEPRESSION TROPICALE)
72 HRS: 11.2S 61.1E - 30 knots (DEPRESSION TROPICALE)

Additional Information
======================
This system evolves within a neutral environment: Windshear has decreased over the area, low inflow is established poleward but not equatorward and mid level lack of humidity.
Available NWP models analyze this low and track it globally westward without deepening it significant at short to medium range.

AT THIS STAGE, THIS SYSTEM DOES NOT JUSTIFY ISSUANCE OF REGULAR WARNINGS.
Quoting Dr. Masters:

No Atlantic named storm likely this week
The models continue to indicate an extratropical storm that has the potential to evolve into a named subtropical storm will form in the middle Atlantic by Thursday. However, it now appears that there will be too much wind shear for Subtropical Storm Rene to form out of this system.

(end quote)



Looks like 08 season died onward to a hopefully peaceful 09 season
Stopping by to say hi. Glad the season has calmed.
You never know... From the latest discussion:

...SATELLITE IMAGES INDICATE AN INCREASED AREA OF CYCLONIC TURNING IN THE MID/UPPER LEVELS NEAR 27N59W....THIS SURFACE TROUGH WILL LIKELY GAIN VORTICITY FROM THE WEAKENING FRONT AND POSSIBLY DEVELOP INTO A CLOSED LOW ON TUE/EARLY WED ACCORDING TO MANY OF THE NWP MODELS.

Would be quite interesting so late.

The turning is quite clear in RAMSDIS loop.

Bravo Weather Underground your commitment to technology makes your website superior to others! Oh by the way, Dr.Masters thank you for the terrific innovative update.
Anyone got an Idiot's guide to fancy new radars?

did you try Amazon.com?

;)
Thanks Doc, have a good time in Frisco
Amy - nothing on Amazon. Though if you google "Idiot's guide to fancy new radars?" this blog comes up number 1.
I just learned all about the WSR 88 in college and now your telling me its going to be phased out! WHAT!
25. tornadofan 8:17 PM GMT on December 15, 2008
Amy - nothing on Amazon. Though if you google "Idiot's guide to fancy new radars?" this blog comes up number 1.

---
LMAO
25. tornadofan 12:17 PM PST on December 15, 2008
Amy - nothing on Amazon. Though if you google "Idiot's guide to fancy new radars?" this blog comes up number 1.



why am I not surprised?

;)
Good afternoon all,
just checking in on everybody and hope to get the radar in this area..... Sounds like a new toy to get used too....

Thank You Dr Masters for the update and great info on the new radars.....

Taco :0)
Thanks for the Update on the Radar. That is good news, that the public is able to access this info. Nice.

Been raining here, on and off, all day. Cool too.81F now. (well its all relative, you know??) Took the opportunity to re-pot some trees, and move things around in prep. for the coming dry season. (will go to the Mystic Masseur in the morning, for healing of burned-out back muscles)

Looks like we will have rains for a couple days....
WSR 88 explained..Link
Excellent blog Dr Masters. I've been playing with these so this blog & links are most appreciated. & the weather toys..ya'll have outdone yourselves. I haven't seen anyone else put these out to the public.


Noticed something...Looks like we have entered La Niña conditions... NINO 3,4 is below -0.5.
Wow, winds here are gusting up to 70 km/h (40 mph), and the temperature dropped 7C in 5 hours (that's 10F). By the way the American Geophysical Union was the organazation that reported the melting of the methane clathrates, I look forward to more information regarding this issue.
Evening, everybody.

Glad to see the info from the new dopplar system coming online. I'm really glad to see that FLL is one of the first sites to be launched.
Quoting cchsweatherman:
Just stopping by to check up on everyone. Been quite some time since I last visited the blogs. Been having a rough semester that just came to an end last Thursday.

Anyways, yet another well-written and impeccable blog post by Dr. Masters. Will be looking forward to using this new radar technology to track thunderstorms here in South Florida come the spring. Seems like the resolution will be much better and this new radar technology will provide so much more data.

By the way, it seems like all the computer models are onboard with brief subtropical development in the Central Atlantic before wind shear takes control. Will be watching this region throughout the week in case.

If you have been visiting my site within the past month, I apologize for not having updated it for quite some time. Just been really busy with finals and trying to overcome some emotional hurdles that have come over the past couple months. This morning, I did a full update on my site.

Well, thanks for the update Dr. Masters and hope everyone has a great holiday season. I will be stopping in from time to time during the "offseason".
Hey, cchs. Good to see u made it through the term. One good thing about the way school is set up is that it allows u to get through a lot of the hurricane season before things really start to tighten up workload wise. Hope u do ok with ur finals and stuff so u can have a little time in the blog without feeling guilty . . . lol
Quoting HadesGodWyvern:
Mauritius Meteorological Services
Tropical Cyclone Warning Number ONE
ZONE PERTURBEE 04-20082009
12:00 PM UTC December 15 2008
======================================

At 12:00 PM UTC, Area of Disturbed Weather (1003 hPa) located at 9.4S 69.8E has 10 minute sustained winds of 20 knots with gust of 30 knots. The disturbance is reported as moving west-southwest at 5 knots.

Dvorak Intensity: T1.5

Forecast and Intensity
=========================
24 HRS: 10.2S 66.1E - 30 knots (DEPRESSION TROPICALE)
48 HRS: 10.7S 63.4E - 30 knots (DEPRESSION TROPICALE)
72 HRS: 11.2S 61.1E - 30 knots (DEPRESSION TROPICALE)

Additional Information
======================
This system evolves within a neutral environment: Windshear has decreased over the area, low inflow is established poleward but not equatorward and mid level lack of humidity.
Available NWP models analyze this low and track it globally westward without deepening it significant at short to medium range.

AT THIS STAGE, THIS SYSTEM DOES NOT JUSTIFY ISSUANCE OF REGULAR WARNINGS.
Hey HGW. Isn't this relatively early for them? I don't remember seeing a notice of a potential storm in SW Indian before January any time recently. Also, any reports on what's expected for the season down south? I'm under some heavy deadlines this week, or I'd pull whatever I find and post it myself.
I just updated my blog and made many maps interactive if anyone would like to review.

TampaSpins Weather Blog Link
Great News about that new radar. Thank to WeatherUnderground to make this posible and thanks for add a station in San Juan PR.

What about posible Rene? The area Seems like it is on his way to make a try! Well lets see whats happened.

Good Evening!
42. P451
Speaking of Radar's... interesting image.

US Composite

Snow from California through Texas then arcing towards Ohio.

Lots of cold air in the US so far this fall!

Winter is going to be interesting!
Quoting P451:
Speaking of Radar's... interesting image.

US Composite

Snow from California through Texas then arcing towards Ohio.

Lots of cold air in the US so far this fall!

Winter is going to be interesting!


Yep...And Next week it's the east's turn.
Hmmm. . . that map implies NAS radar is reporting again . . .
Yup, it's up on the internet from their site, only without dates and times . . .
47. P451
Dolphin and the GFS = 1 big headscratcher....

Helloo. No posts for 50 mins on here ??
Well, its still raining where I am.......
Is the new area of convection the low that could have become Rene because if it is then it is looking healty for nothing
Does anyone know what th final death toll from Ike was in the US? I can't find any new information regarding this. Thankyou. PS, it's freaking hot in swFL and muggy too! Looks lik a warm hristmas this year :(
Hi Pottery - everyone is out shopping or hiding.

I've updated my blog with some santa pics - and some how they all relate to those on the blogs.

Do need help with the first one though - leave a comment about who it best portrays. Would love to have comments and other peoples pics - something fun to do in off season.

Mauritius Meteorological Services
Tropical Cyclone Warning Number TWO
PERTURBATION TROPICALE 04-20082009
4:00 AM Reunion December 16 2008
======================================

At 0:00 AM UTC, Tropical Disturbance (1002 hPa) located at 9.4S 68.6E has 10 minute sustained winds of 20 knots with gust of 30 knots. The disturbance is reported as moving west at 4 knots.

Dvorak Intensity: T1.5

Forecast and Intensity
=========================
24 HRS: 09.8S 65.9E - 25 knots (PERTURBATION TROPICALE)
48 HRS: 10.4S 63.3E - 30 knots (DEPRESSION TROPICALE)
72 HRS: 11.2S 60.8E - 25 knots (PERTURBATION TROPICALE)

Additional Information
======================
Convective activity has built close to the center but is fluctuating and remains scattered. The system is barely organized. This system evolves within a neutral environment: Wind shear is weak, upper level divergence is good but weak equatorward, low level inflow is established poleward but not equatorwards. Available NWP models analyze this low and track it west-southwest along the northern periphery of the subtropical high.

AT THIS STAGE, THIS SYSTEM DOES NOT JUSTIFY ISSUANCE OF REGULAR WARNINGS
38. BahaHurican 10:26 PM GMT on December 15, 2008

Hey HGW. Isn't this relatively early for them? I don't remember seeing a notice of a potential storm in SW Indian before January any time recently. Also, any reports on what's expected for the season down south? I'm under some heavy deadlines this week, or I'd pull whatever I find and post it myself.
-----

Baha, no not really the southwest indian ocean cyclone season starts late October (they already had Asma and Bernard this season). It's the Australia and South Pacific cyclone season that starts around December/January.
as for how many cyclone for the southern hemisphere I seen about 10 for Australia and 10 for Fiji region.. so it might be an active season down south.

There is also a cyclone potential for Australia right now (Western Australia region)
Trinidad weather now
time 9:40 pm
temp 75 f
humidity 93%
wind calm

Its going to get a little chilly here around 4:00 am. Forecast is for 71 F.
Mustbe Christmas, or Winter, or something.......
Quoting pottery:
Trinidad weather now
time 9:40 pm
temp 75 f
humidity 93%
wind calm

Its going to get a little chilly here around 4:00 am. Forecast is for 71 F.
Mustbe Christmas, or Winter, or something.......

Ho ho ho Pottery! Had to turn the a/c on tonight. Very humid. Maybe it's the wine:)
Hi there Sugar.
Yep, could be the wine. then again, it could be the weather LOL
Wine, weather, it's all good.
Does anyone know the final death toll rom Ike in the US? Can't findany updated info. Thanks
Quoting GatorWX:
Does anyone know what th final death toll from Ike was in the US? I can't find any new information regarding this. Thankyou. PS, it's freaking hot in swFL and muggy too! Looks lik a warm hristmas this year :(

Wikipedia says 126 direct, 38 indirect, 202 missing so pretty bad
Quoting all4hurricanes:

Wikipedia says 126 direct, 38 indirect, 202 missing so pretty bad

It's pretty cold where I am in S. Ontario, and windy too. Any water on the ground from today's rain and snow melt has frozen solid.
First an early ice storm takes out all the electric, and now they have record highs in southern Maine. 57 with snow forecasted for the next few days. The weather is certainly weird.

No wonder the kid has strep.
I just looked at Wikipedia, but that's been their figure for a couple months, so the people certainly aren't still classified as missing. I imagine many or most of ths listed there as missing were people who relocated or had no communication. Thankyou for the response
Astro, are you from TX?
Quoting sugarsand:

Ho ho ho Pottery! Had to turn the a/c on tonight. Very humid. Maybe it's the wine:)
me too sugar.....very humid, but agree possibly the wine! LOL
Hey CG!
Cheers!
Quoting sugarsand:
Hey CG!
Cheers!
Hi Sugarsand: Ready for the holidays? Blog pretty quiet but as to be expected this time of the year!

I do see that Pottery is around too!
Quoting HadesGodWyvern:
as for how many cyclone for the southern hemisphere I seen about 10 for Australia and 10 for Fiji region.. so it might be an active season down south.

There is also a cyclone potential for Australia right now (Western Australia region)
That's pretty high for Oz. They are usually around 6-7 average, I think. Fiji area is usually a bit more active.

Well, at least we are likely to stay occupied during the ATL off-season . . . lol

Once things let up on me at work this week I'll be paying more attention, have time to catch up [and read back].
Hi Conchy - how's it going? Almost 80 today - air was back on again. If we only lived a few hours north....
Baha - you are only imagining that its going to get slower - its a myth that they use to keep us poor fools working hard.
Quoting zoomiami:
Hi Conchy - how's it going? Almost 80 today - air was back on again. If we only lived a few hours north....
Hey Zoo - us too air came back on - didn't make 80 but still warm and humid. May have to head down your way soon as my Aunt is in the hospital.
Sorry to hear that, not fun when family is sick over the holidays.
I've been kinda curious about the final number of deaths for Ike as well. I notice the NHC report doesn't seem to be out as yet. I dunno if that is one of the holdups. Then again, neither are Fay, Gustav, or Hanna, so they may be waiting on other info like wind confirmations, reanalysis data, or complete damage reports.
I'm off - take a look at the santas on my blog - some great pics posted by Pat.

Night
Sorry to check out on u guys so early. I've been under the weather [admittedly great!] today, and I need to get out early tomorrow. So I'm heading to bed.

Goodnight, all!
Quoting conchygirl:
Hi Sugarsand: Ready for the holidays? Blog pretty quiet but as to be expected this time of the year!

I do see that Pottery is around too!

Still have a few things to do for the "holidays"...fun stuff, like baking and wrapping.
Sorry to hear about your Aunt.
nght Baha, thanks for info
Have to walk the furry kids, so g'nite!! Take care all.
Night to everyone. Work calls tomorrow.


out of season area of intrest 25n/55w
Quoting KEEPEROFTHEGATE:


out of season area of intrest 25n/55w


I see a ull off to the se with a llc around 28n 55w under a developing convective blowup.
It's to early. I mean off to the sw.
Hi all just popped in to say 2 things:


1) Good Morning all of you WU bloggers! :)

2) anyone have the maps of the temperature outlook and precipitation outlook for the US? TIA

PS its cold again and I'm a bit sick now time to get that soup
thanks bonedog :)
Morning All
ILM is
Cloudy 54F
Forecast is for 67F with rain.
NO ICE here Bone!
LOL MissNadia

Looking at a couple of rounds of nastiness coming my way. Might be another ice storm also =( still recovering from the last one.

Hopefully all stays well for everyone.
Yikes Bonedog: You all sure don't need another ice storm. Good Morning by the way!
Magnitude 3.6
Date-Time Tuesday, December 16, 2008 at 12:42:15 UTC
Tuesday, December 16, 2008 at 07:42:15 AM at epicenter
Time of Earthquake in other Time Zones

Location 32.970°N, 79.997°W
Depth 5 km (3.1 miles) set by location program
Region SOUTH CAROLINA
Distances 4 km (2 miles) SE (134°) from Goose Creek, SC
6 km (4 miles) N (359°) from Hanahan, SC
10 km (6 miles) N (11°) from North Charleston, SC
146 km (90 miles) NE (45°) from Savannah, GA
418 km (260 miles) E (101°) from Atlanta, GA

Location Uncertainty horizontal +/- 23.1 km (14.4 miles); depth fixed by location program
Parameters NST= 14, Nph= 14, Dmin=22.7 km, Rmss=1.11 sec, Gp=234°,
M-type="Nuttli" surface wave magnitude (MLg), Version=6
Source USGS NEIC
91. P451
"Rene" is starting to take shape. Even if she does not form the forecasters/models did an incredible job hinting at this system from as much as 7 days ago.

Hey,Bone,are you ready to rock and roll this week?All your snowcasting looks like its going to pay off
93. P451
So one of these hi-def radars is in Newark NJ which covers me. I gotta say I dislike the interface though. Base Reflectivity is only a .20 angle which shows nothing and 1.00 which also misses a lot. Why no .50 angle? Composite on them is a terrible blocky mess. Zooming in also doesn't give me the feel of "hi-def" radar.

Not sure what's going on here but it's just not great from a user point of view.
90.

Hmmm.. took a look at the location map, the epicenter is across the street from Charleston Naval Weapons Sta.. blame it on the neighbors?

more: Magnitude 3.6 - SOUTH CAROLINA

Mod: Oh, isn't that interesting? they changed the location.. where the heck is my tinfoil hat?

the epicenter is across the street from Charleston Naval Weapons Sta.. blame it on the neighbors?


I thought it might have just been Presslord passing gas...


yea rain....maybe something went "Boom!"
Quoting HadesGodWyvern:
as for how many cyclone for the southern hemisphere I seen about 10 for Australia and 10 for Fiji region.. so it might be an active season down south.

There is also a cyclone potential for Australia right now (Western Australia region)

What about Queensland and Northern Territory, that's the north and east coast of tropical Australia. I will endevour to bring everyone the latest info when the s@#t hits the fan here in OZ.
Cheers and Happy Festive Season, God Bless, and a Happy New Year to one and all.
AussieStorm
vort....that's SJ's neck of the woods...too many Krystals again....
Local News is reporting an outbreak of the Norovirus at an assisted living Facility here in Wilmington.
This is not good news!
Back. Trying to get overstretched plumbers out to my house before this malstrom happens.

Yea NE appears that all my wishing is paying off =) But I dont like the ice wording in the forecast.

Morning conchy =) Yes folks up this way dont need another round of ice, snow yes. Still have a ton of branches and two trees left to clear from the property, get the boiler back online finally (hopefully today), and work crews are still removing branches from wires and fixing infastructure.

Quoting Rainman32:
90.

Hmmm.. took a look at the location map, the epicenter is across the street from Charleston Naval Weapons Sta.. blame it on the neighbors?

more: Magnitude 3.6 - SOUTH CAROLINA

Mod: Oh, isn't that interesting? they changed the location.. where the heck is my tinfoil hat?




I used it to grill sausages.

Sorry. :(
vort....that's SJ's neck of the woods...too many Krystals again....


OK...I should have known...LMAO!

Seems like the Southeastern US has become more seismically active over the past couple years. Just hoping that this is not becoming a trend.
104. P451
Quoting cchsweatherman:
Seems like the Southeastern US has become more seismically active over the past couple years. Just hoping that this is not becoming a trend.


I have noticed that as well. So has the "New York Area" with the Ramapo fault. I also feel that the St Louis area as reminded us it is also not dead.

With these things it is always a question of WHEN and never IF...because it's going to happen.

The thing with these areas is they have all these lower level quakes but never a big pressure release event like California has. So that energy is constantly building - and when it goes out East - it GOES.

It's going to happen it's just a matter of when. These little quakes remind you that the plates are grinding but there has been no release with these events in fact they are a hint that the pressure is BUILDING and not RELEASING.

It's just a fact of life though and when it happens it's going to be deadly and we will have to respond to it.

I feel this country...our government... does NOT have a fail safe plan to save those affected by these seemingly imminent events.

That's the big one. The reaction to the event.

Hey, we always knock 3rd world countries but look at the Tsunami response from years back - those countries were right on top of taking care of their own as best they could.

The USA? We get a hurricane and it's 3 weeks later and we're in bread and water lines - be it North Carolina, Florida, or New Orleans. That's....disconcerting to say the least.

That is what we must focus on. Not prevention but reaction to an event. We're one of the WORST in the world when it comes to reaction to a big event.

Why have we not improved upon this!? Politics, Money be damned... we MUST improve our ability to respond to disasters. We haven't and we will continually be reminded that we haven't as each new disaster gets handled terribly.
Quoting P451:


I have noticed that as well. So has the "New York Area" with the Ramapo fault. I also feel that the St Louis area as reminded us it is also not dead.

With these things it is always a question of WHEN and never IF...because it's going to happen.

The thing with these areas is they have all these lower level quakes but never a big pressure release event like California has. So that energy is constantly building - and when it goes out East - it GOES.

It's going to happen it's just a matter of when. These little quakes remind you that the plates are grinding but there has been no release with these events in fact they are a hint that the pressure is BUILDING and not RELEASING.

It's just a fact of life though and when it happens it's going to be deadly and we will have to respond to it.

I feel this country...our government... does NOT have a fail safe plan to save those affected by these seemingly imminent events.

That's the big one. The reaction to the event.

Hey, we always knock 3rd world countries but look at the Tsunami response from years back - those countries were right on top of taking care of their own as best they could.

The USA? We get a hurricane and it's 3 weeks later and we're in bread and water lines - be it North Carolina, Florida, or New Orleans. That's....disconcerting to say the least.

That is what we must focus on. Not prevention but reaction to an event. We're one of the WORST in the world when it comes to reaction to a big event.

Why have we not improved upon this!? Politics, Money be damned... we MUST improve our ability to respond to disasters. We haven't and we will continually be reminded that we haven't as each new disaster gets handled terribly.


Couldn't agree with you more. There is one major problem we have in this country that no other country has. We all feel that we're invincible and that we can overcome anything. Its more a psychological problem than anything.
106. viter
DC Metro Area - Composite Image?

It looks like those of us in the DC Metro area are going to have 4 of these radars surrounding us. (BWI, IAD, DCA & NHK ???)

It would seem that this level of coverage could eliminate the drawbacks associated with the higher resolution...IF we could get some sort of composite image of all 4.

So, who's gonna hook this up?


out of season area of interest west atlantic
Good evening from Spain!

We've got another possible case of MEDICANE (cyclone with some tropical characteristics over the Mediterranean Sea):

110. GBlet
Good morning! BOY, it's cold here! Working on getting water to thaw out in back bathroom as our heat bulb blew out last night. We got snow that was not expected to be this bad. The county trucks are working double time to get roads passable. Now I hear we are getting freezing drizzle later. YIPPY!!!!
Link

BBC Article on something we kinda figured.
Oh man... its almost time to leave sunny Mexico.. the bus will be here in 1 hour to pick us up to go home.. to sunny Victoria.. where it is SNOWING and a windchill of -11... WTF happened?
Looks like they could make a "combined" radar using the old 88 and new HD...... taking the strengths of each and combining them.

It is nice to have new weather tools, hopefully we can get more along the atlantic and gulf coasts.....
Quoting KEEPEROFTHEGATE:


out of season area of interest west atlantic


Watch it closely.
Quoting Orcasystems:
Oh man... its almost time to leave sunny Mexico.. the bus will be here in 1 hour to pick us up to go home.. to sunny Victoria.. where it is SNOWING and a windchill of -11... WTF happened?


Santa left the door open.
Lots of new TWDR stations have been added. Still waiting on New Orleans, though.
Will be nice to have the Greer SC TDWR data!
Looking for the 1st Hail of the Season here.
I believe that this sentence: "Hail causes even more trouble (Figure 3). Thus, it is best to use the TDWR in conjunction with the traditional WSR-88D radar to insure nothing is missed."
should actually read "...the traditional WSR-88D radar to ENSURE..." ensure and insure are similar, but I believe inappropriately mixed here.
All South Florida radars are now down, at least according to the map. Palm Beach, Ft. Lauderdale and Miami TDWR radars have been down for about 2 wks now w/no comment whatsoever on their respective pages. Miami radar went down 2 days ago but at least they posted a comment that it was down due to replacing parts of the radome. What gives?
At least the Miami radar hasn't been down for a whole month now as the KIAH (North Houston) one has been. We're suppose to be getting our first front tomorrow and was looking forward to seeing the squal lines on it, doesn't look like its gonna happen
I believe this is the best weather website I've ever been to! So much awesome stuff here!!!