Extreme 111° heat hits Texas; floods kill 9 in Haiti

By: Dr. Jeff Masters , 2:25 PM GMT on April 26, 2012

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Another round of unprecedented April heat hit the U.S. yesterday, and this time it was Texas' turn to see large sections of the state with the hottest April temperatures in over a century of record keeping. Seven major airports in Texas set all-time April high temperatures yesterday:

Amarillo, TX: 99° (old April record 98° on 4/22/1989 and 4/22/1965)
Lubbock, TX: 101° (old April record 100° on 4/16/1925 and /22/1989)
Dalhart, TX: 96° (old April record 94° on 4/22/1989)
Borger, TX: 99° (tied April record set on 4/22/1965)
Midland, TX: 104° (old April record 101° on 4/21/1989)
Abilene, TX: 104° (old April record 102° on 4/16/1925)
Childress, TX: 106° (old April record 102° on three occasions, most recently on 4/3/2011)

According to wunderground's weather historian Christopher C. Burt, both Texas and Oklahoma came within 2°F of their all-time April state high temperature record yesterday. Altus, Oklahoma hit 104°, falling 2° short of the April state record of 106° set at the Magnum Research Station in 1972. In the Texas Mesonet, it hit 111° at Knox City 3NW, which is just 2° short of the Texas April state record of 113° set at Catarina in 1984. According to Mr. Burt, What is amazing is that Knox City is in the north-central part of the state, not down in the Rio Grande region like Catarina. The 111° would probably be pretty close to whatever the all-time hottest temp for ANY month might be in that location (probably around 115°). On Sunday this week, Nevada just missed setting their April state high temperature record, when the mercury hit 105° in Laughlin (April state record: 106° in 1989.)


Figure 1. At least 36 of the roughly 400 major U.S. cities that maintain automated weather sensors at their local airports (8%) have set or tied all-time April high temperature records so far this month. The records set yesterday in Texas are not yet in the database, and are not included on this map. Image taken from our new Record Extremes page.

Earlier this week, all-time record April heat hit large portions of Arizona, California, Nevada, Utah, Colorado, and Wyoming. At least 36 of the roughly 400 major U.S. cities that maintain automated weather sensors at their local airports (8%) have set or tied all-time April high temperature records so far this month; no all-time April cold records have been set. The U.S. has been on an extraordinary pace of setting high temperature records so far in 2012. During March 2012, an astonishing 32% of all the major airports in the U.S. set all-time March high temperature records. For the year-to-date, there have been 184 new all-time monthly high temperature records set at the major airports, and 6 all-time monthly low temperature records. Not surprisingly, the period January - March this year has been the warmest such period in the U.S. since record keeping began in 1895.



Figure 2. Total precipitable water (in mm) for this morning shows a surge of moisture moving westwards though the Caribbean. Precipitable water values in excess of 51 mm (2 inches, orange colors) are capable of generating heavy flooding rains. Image credit: University of Wisconsin CIMSS.

Heavy rains kill nine in Haiti
The rainy season has begun on the Caribbean island of Hispaniola, where heavy rains that began on Monday have triggered mudslides and floods that killed nine people. Nearly 500,000 people are still homeless in Haiti from the January 2010 earthquake, making the country highly vulnerable to flooding disasters. Heavy flooding was also a problem this week in the neighboring Dominican Republic, where 11,000 people were evacuated; no deaths were reported there, however. Precipitation forecasts from the GFS model suggest that the worst is over for Hispaniola, with the axis of greatest moisture expected to move west of the island today. This surge of moisture will bring heavy rains to Jamaica, Cuba, the Bahamas, Cayman Islands, and South Florida during the remainder of the week.

Jeff Masters

I'll have another cup please (BigJohnsSalsa)
Gonna be a good day
I'll have another cup please

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supercooled water video (with bonus Darth Vader imitation)

video with music
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Quoting TropicalAnalystwx13:

Something about that map just doesn't seem accurate to me. I would use NOAA's Sea Surface Temperature anomaly map...but that's just me.

Definitely would use this one though.



Click on the image to be directed to the website.

Yeah, it's a bit off...this is the one I use on my blog
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Quoting TropicalAnalystwx13:

What's with everything, especially the Gulf, getting colder in the last couple frames?
Member Since: February 11, 2012 Posts: 83 Comments: 7850
Quoting TropicalAnalystwx13:

Something about that map just doesn't seem accurate to me. I would use NOAA's Sea Surface Temperature anomaly map...but that's just me.

Definitely would use this one though.



Click on the image to be directed to the website.


What's the pressure from the pacific high
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Member Since: July 6, 2010 Posts: 113 Comments: 32354
330. MTWX
Here is the one from NWS Birmingham



Link to full story and individual tornado survey reports
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Quoting hydrus:
I would not go for a swim in the Great Lakes even though they are warmer than average.Gulf definitely.


We were swimming in the Atlantic last Tuesday in RI. :)
COLD!!
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Quoting nigel20:
April 26, 2012 SST Anomaly

Something about that map just doesn't seem accurate to me. I would use NOAA's Sea Surface Temperature anomaly map...but that's just me.

Definitely would use this one though.



Click on the image to be directed to the website.
Member Since: July 6, 2010 Posts: 113 Comments: 32354
April 26, 2012 SST Anomaly
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326. MTWX
Confirmed tornadoes from last years outbreak across the Jackson NWS coverage area.




Link to article and individual tornado survey reports
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>Traditional GOES imagery can sometimes be difficult to use to distinguish between clouds and snow cover on the ground due to the similarity of the albedo of these features at visible wavelengths. Using the multispectral channels from MODIS, a false color composite can be made that distinguishes between clear ground, snow cover, and clouds. This image demonstrates this capability from a snow storm in the Tennessee River Valley. Here, clouds remain white, clear ground is green to aqua, and snow cover is designated by the various shades of red.
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Quoting PedleyCA:


Thanks Nigel, another Toy.....

No problem
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.
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Tropical Storm Fay during August 2008 affected many areas of the southeastern U.S. with prodigious rainfall amounts in excess of 500 mm, especially from eastern Florida to southwestern Georgia. A high-resolution simulation of the NASA Land Information System (LIS) depicts the dramatic increase in volumetric soil moisture in the root-zone layer (40-100 cm) in the 8 days from 18 to 26 August 2008. This event certainly helped alleviate the multi-year drought over portions of the southeastern U.S.
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Speaking of all this doom and gloom... I am too young to remember this, but the Cold War is something that I'm glad I wasn't around for.

Fear the bomb.



Here's the link if you want to see the original image:

Link

Site has some mature content, PG13
Member Since: September 3, 2011 Posts: 13 Comments: 3476
Quoting nigel20:

Tropical Cyclone Formation Probability Guidance Product page
Link


Thanks Nigel, another Toy.....
Member Since: February 29, 2012 Posts: 0 Comments: 5962
SPoRT’s AWIPS II team in collaboration with our partners at the Huntsville National Weather Service are preparing SPoRT data for the next generation of the Weather Service’s decision support software. One such success is a plug-in to display total lightning data. This example image shows the source density product from the North Alabama Lightning Mapping Array (NALMA) overlaid on the radar data from the Hytop, AL doppler radar. Note the intense lightning activity in the center cell, whereas some other strong radar signatures have no lightning observed. (Image from 24 October 2010)
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Quoting hydrus:
I would not go for a swim in the Great Lakes even though they are warmer than average.Gulf definitely.

Neither would I
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and of course Bastardi's favorite model..moisture heads into the GOM-JMA



Member Since: August 19, 2006 Posts: 13 Comments: 15751
t 0350 UTC on 25 April 2010, a strong storm was approaching Marion County in southeast Tennessee, which is part of the Morristown, Tennessee National Weather Service Forecast Office’s county warning area. Previous analysis by the forecaster indicated that the storm was not yet severe. However, the image here shows the lightning source densities (lower left) surged to over 200 sources while previous lightning data showed far fewer sources and other observations (radar and probability of severe hail) showed no change at this time. This lightning jump prompted the issuing of a severe thunderstorm warning that ultimately had a 20 minute lead time of severe winds near Jasper, Tennessee at 0410 UTC. The total lightning data helped “tip the scales” on issuing this particular warning.
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Quoting Grothar:


Nice map,Nigel. Where did you find it?

Tropical Cyclone Formation Probability Guidance Product page
Link
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This storm stomped us bad.The storm system that struck the Tennessee Valley on 10 April 2009 presented several impressive satellite images. This image is an overlay of 1 km MODIS visible imagery with 1 km MODIS 11 micron infrared imagery (in color). The image combination tool in AWIPS allows for a unique presentation as the visible imagery shows cloud structure, especially with some of the towering cumulonimbus clouds and cirrus shield associated with the severe weather. The infrared imagery shows the coldest cloud tops associated with the strongest storms, shown by the pink region. The image below demonstrates the full power of MODIS. The visible image has a resolution of 250 m. Unlike the more well known GOES imagery, MODIS can only provide a snapshot image as it is aboard a polar orbiting satellite. However, MODIS gives us a preview of future capabilities.
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Quoting hydrus:
GOES Imager Cloud Top Pressure
Apr. 26, 2012 - 22:45 UTCGOES Imager Spectral Difference
Apr. 26, 2012 - 22:45 UTC

Hadn't noticed the cloud top pressure images before. Looked it up here.

"Cloud-top pressure and cloud-top height are derived [from] the cloudtop temperature product and the atmospheric temperature profile provided by Numerical Weather Prediction (NWP) data."
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Quoting Patrap:
..the canes in Spain, fall mainly on the plain...
With very heavy rain, and the flooding is a pain.
Member Since: September 27, 2007 Posts: 1 Comments: 21507
I would not go for a swim in the Great Lakes even though they are warmer than average.Gulf definitely.
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Ha.

Member Since: July 6, 2010 Posts: 113 Comments: 32354
Quoting barbamz


Wow. I love how b&w makes the structure of the storms pop. Simply stunning.
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Quoting nigel20:


Nice map,Nigel. Where did you find it?
Member Since: July 17, 2009 Posts: 71 Comments: 26558
"Georges"



Hurricane Georges as a borderline Category 4 hurricane on September 20 at 1847 UTC. This image was produced from data from NOAA-14, provided by NOAA. Maximum sustained winds were 135 mph.


Hurricane Georges was a powerful and long-lived Cape Verde-type Category 4 hurricane which caused severe destruction as it traversed the Caribbean and Gulf of Mexico in September 1998, making seven landfalls along its path. Georges was the seventh tropical storm, fourth hurricane, and second major hurricane of the 1998 Atlantic hurricane season. It became the second most destructive storm of the season after Hurricane Mitch and the costliest Atlantic hurricane since Hurricane Andrew in 1992.
Georges killed 604 people, mainly on the island of Hispaniola, and caused extensive damage resulting at nearly $6 billion (1998 US dollars, $8.56 billion 2012 USD) in damages mostly in St. Kitts and Nevis, Puerto Rico and Hispaniola.

The hurricane made landfall in at least seven different countries (Antigua and Barbuda, St. Kitts and Nevis, Haiti, the Dominican Republic, Cuba and the United States) and Puerto Rico, a Commonwealth of the United States — more than any other hurricane since Hurricane Inez of the 1966 season.
Member Since: July 3, 2005 Posts: 426 Comments: 128875
Quoting Patrap:
..the canes in Spain, fall mainly on the plain...


By George, I think you got it.
Member Since: July 17, 2009 Posts: 71 Comments: 26558
..the canes in Spain, fall mainly on the plain...
Member Since: July 3, 2005 Posts: 426 Comments: 128875
This is a lightening forecast map..Something I have not seen before..36 hour run..4 km WRF Hourly Max Lightning Threat 3 Forecasts.
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Member Since: September 10, 2007 Posts: 0 Comments: 11324
Quoting ncstorm:
The 18Z NOGAPS has already started gunning for florida, please keep in mind this is the NOGAPS..



Well that was exciting. Too bad it's NOGAPS. That thing cries wolf far too often for my taste.
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Quoting PedleyCA:


You live on High Ground right? I picked G but I wasn't aiming for your island.
You got some extra rain today, always more that you need it seems. Doing OK here. Our rain event just passed and it wasn't much of one. Very little fell here.

Yes I do, most of the the island above 200m, but we have many rivers which is the source of most of the flooding here....sorry you didn't get much rain
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GOES Imager Cloud Top Pressure
Apr. 26, 2012 - 22:45 UTCGOES Imager Spectral Difference
Apr. 26, 2012 - 22:45 UTC
Member Since: September 27, 2007 Posts: 1 Comments: 21507
Quoting hydrus:
I used a much different word on how it was to get up there.


I'll bet you did! But we have to keep it Civil. It was worth the effort.
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Quoting PedleyCA:


That was an adventure to get that on there.
I used a much different word on how it was to get up there.
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Quoting nigel20:
Little early for that.
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Quoting nigel20:

Hey, what's up?


You live on High Ground right? I picked G but I wasn't aiming for your island.
You got some extra rain today, always more that you need it seems. Doing OK here. Our rain event just passed and it wasn't much of one. Very little fell here.
Member Since: February 29, 2012 Posts: 0 Comments: 5962
KEEPEROFTHEGATE: FROM THE ASHES OF THE PAST
WE SHALL FORGE A NEW FUTURE AS ONE


Like heck. I ain' 'bout to let no Blob swaller me.
(sneaky how I got the topic back to weather, ain't it?)
Member Since: August 21, 2007 Posts: 0 Comments: 4860
Good evening everyone. Fianlloy getting some decent rain down here.



CARIBBEAN SEA...
HAZARDOUS WEATHER CONDITIONS ARE NOW FOCUSED OVER THE SW
CARIBBEAN WATERS...AS A 1010 MB LOW PRESSURE SYSTEM AND
ASSOCIATED TROUGH GENERATE SCATTERED MODERATE TO HEAVY SHOWERS
AND THUNDERSTORMS BETWEEN 74W-84W. THIS SYSTEM IS CENTERED NEAR
11N77W WITH A SURFACE TROUGH EXTENDING NW FROM THE LOW CENTER TO
NEAR 17N82W. GUSTY WINDS UP TO 30 KTS...FREQUENT DANGEROUS CLOUD
TO SEA LIGHTNING...AND POSSIBLE ISOLATED WATER SPOUTS ARE LIKELY
WITHIN THE CONVECTIVE REGION. SEAS UP TO 10 FEET ARE FORECAST TO
EVOLVE TONIGHT FROM 11N-18N BETWEEN 64W-80W. TOTAL PRECIPITABLE
WATER IMAGERY SHOWS HIGH VALUES OF LOW LEVEL MOISTURE AS WELL AS
MIDDLE TO UPPER LEVEL MOISTURE CONCENTRATED WITHIN THE
CONVECTION REGION ON WATER VAPOR IMAGERY. SHORT RANGE COMPUTER
MODELS SUGGEST CONTINUOUS CONVECTION OVER THIS REGION AND
EXPANDING NNW ACROSS CUBA DURING THE NEXT 24 HOURS.
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Quoting Grothar:



I think it was from "Star Trek: The Return of Spock"



lol I could believe it
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BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
701 PM CDT THU APR 26 2012

THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A

* TORNADO WARNING FOR...
WEST CENTRAL RUTHERFORD COUNTY IN MIDDLE TENNESSEE...
EASTERN WILLIAMSON COUNTY IN MIDDLE TENNESSEE...

* UNTIL 730 PM CDT

* AT 701 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR FRANKLIN...AND MOVING SOUTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
FRANKLIN AND EAGLEVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3579 8653 3569 8666 3571 8669 3570 8674
3592 8694 3601 8683
TIME...MOT...LOC 0001Z 318DEG 21KT 3593 8687

$$
31
Member Since: February 11, 2012 Posts: 83 Comments: 7850
290. JRRP
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Quoting CybrTeddy:


Spins it up into a moderate tropical storm by 216 hours (futureland)

Then tries to develop a second low by 228 and kills it off in the Caribbean.

Then another one by 300 hours.

AKA, not going to happen.

The 228 and 300 hour lows won't happen, but for me generally anything inside of 10 days I take a little more seriously, so I wouldn't give the first potential storm no chance...
Member Since: February 11, 2012 Posts: 83 Comments: 7850
Quoting PedleyCA:
Hey, Nigel, what's up

Geek, think I go with G.....

Hey, what's up?
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Quoting MAweatherboy1:
The 18z GFS spins a little something up in the Bahamas 8 days or so from now...


Spins it up into a moderate tropical storm by 216 hours (futureland)

Then tries to develop a second low by 228 and kills it off in the Caribbean.

Then another one by 300 hours.

AKA, not going to happen.
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Quoting Jedkins01:



From the fires of Mount Doom?


Or the from the Crucible of Training?



I think it was from "Star Trek: The Return of Spock"
Member Since: July 17, 2009 Posts: 71 Comments: 26558
253 seflagamma: ...Please call me Gams or Gamma...everyone calls me...those...names here.

Wow, Gamma Gams... they's all sayin' you're hotter 'n X-rayted Legs.
Member Since: August 21, 2007 Posts: 0 Comments: 4860

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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.