Alert archive / Texas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 82, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at May 1, 2009, 11:25 PM CDT for Callahan County, Shackelford County, Texas. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 1, 2009, 11:25 PM CDT (04:25 UTC)
- Expired
- May 2, 2009, 12:03 AM CDT
- In force
- 38 min
- Issued by
- NWS San Angelo, TX
- Area
- Storm-based polygon
Counties Callahan County, TX, Shackelford County, TX
The radar
The Dyess AFB radar (KDYX), 11 km from the middle of the area, began a volume at 04:27 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 4.4 hours before the alert went out and 197 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 3417 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 667 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 7.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 1, 10:32 PM CDT, 53 minutes earlier.
Area forecast discussion, May 1, 10:32 PM CDT, 53 minutes before
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</html>Hazardous weather outlook, May 1, 3:08 PM CDT, 8 hours 17 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 308 PM CDT FRI MAY 1 2009 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-022015- FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO- CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD- TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE- MASON- 308 PM CDT FRI MAY 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS PORTIONS OF THE BIG COUNTRY LATE THIS AFTERNOON AND TONIGHT...AS A COLD FRONT PUSHES INTO THE AREA. VERY LARGE HAIL...PERHAPS UP TO BASEBALL SIZE...DAMAGING WINDS...AND ISOLATED TORNADOES WILL BE POSSIBLE. THE GREATEST RISK AREA WILL BE ALONG AND NORTH OF A ROBY TO ANSON TO BAIRD LINE. THE ENTIRE AREA OF STORMS WILL SLIDE SOUTHEAST LATE TONIGHT ...PERHAPS BRINGING A CHANCE OF SEVERE THUNDERSTORMS TO AREAS FARTHER SOUTH ACROSS THE BIG COUNTRY AND HEARTLAND...INCLUDING SWEETATER...ABILENE...AND BROWNWOOD .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE COLD FRONT WILL SAG FARTHER SOUTH INTO WEST CENTRAL TEXAS FOR SATURDAY AND SUNDAY...PRODUCING MORE THUNDERSTORMS. THESE STORMS WILL HAVE THE POTENTIAL OF REACHING SEVERE LEVELS. .SPOTTER INFORMATION STATEMENT...
In the hours before
Special weather statement, May 1, 7:49 PM CDT, 3 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 749 PM CDT FRI MAY 1 2009 TXZ049-113-020145- JONES TX-FISHER TX- 749 PM CDT FRI MAY 1 2009 ...SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 845 PM CDT FOR JONES AND NORTHWEST FISHER COUNTIES... AT 745 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR 5 MILES EAST OF ROTAN...OR ABOUT 14 MILES WEST OF HAMLIN...MOVING EAST AT 15 MPH. ANOTHER DEVELOPING STORM WAS LOCATED NEAR HUDD AND WILL BE MOVING EAST INTO EXTREME NORTHWESTERN FISHER COUNTY OVER THE NEXT HALF HOUR. * THE STRONG THUNDERSTORM WILL BE NEAR... HITSON AND MCCAULLEY BY 830 PM CDT HAMLIN...NEINDA AND THE INTERSECTION OF US-180 AND RANCH ROAD 126 BY 845 PM CDT PEA TO DIME SIZE HAIL AND WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS. HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS...ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING FOR WEST CENTRAL TEXAS. LACY
Special weather statement, May 1, 7:56 PM CDT, 3 hours 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 756 PM CDT FRI MAY 1 2009 TXZ098-020200- HASKELL TX- 756 PM CDT FRI MAY 1 2009 ...SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 900 PM CDT FOR HASKELL COUNTY... AT 756 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR OVER RULE...OR ABOUT 9 MILES WEST OF HASKELL...MOVING EAST AT 20 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... HASKELL BY 820 PM CDT IRBY BY 850 PM CDT PEA TO DIME SIZE HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM. HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS... ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FRIDAY EVENING FOR WEST CENTRAL TEXAS. LACY
Local storm report, May 1, 8:07 PM CDT, 3 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
807 PM CDT FRI MAY 01 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0802 PM HAIL 2 E RULE 33.18N 99.86W
05/01/2009 E1.00 INCH HASKELL TX TRAINED SPOTTER
&&
MCLocal storm report, May 1, 8:22 PM CDT, 3 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
822 PM CDT FRI MAY 01 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0807 PM HAIL 7 NE ROBY 32.82N 100.29W
05/01/2009 E1.75 INCH FISHER TX TRAINED SPOTTER
&&
MCLocal storm report, May 1, 8:56 PM CDT, 2 hours 29 minutes before
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</html>Local storm report, May 1, 9:21 PM CDT, 2 hours 4 minutes before
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</html>The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 8:02 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 58 min |
| May 1, 8:06 PM CDT | Severe Thunderstorm Warning | SJT | Fisher | 54 min |
| May 1, 8:31 PM CDT | Severe Thunderstorm Warning | SJT | Fisher, Jones | 59 min |
| May 1, 8:33 PM CDT | Tornado Warning | SJT | Haskell | 42 min |
| May 1, 8:59 PM CDT | Severe Thunderstorm Warning | SJT | Jones, Shackelford | 61 min |
| May 1, 9:14 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 31 min |
| May 1, 9:18 PM CDT | Severe Thunderstorm Warning | SJT | Jones | 27 min |
| May 1, 9:42 PM CDT | Severe Thunderstorm Warning | SJT | Jones, Shackelford | 63 min |
| May 1, 10:36 PM CDT | Severe Thunderstorm Warning | SJT | Callahan, Jones, Shackelford | 54 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2009Every severe thunderstorm warning in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.