Alert archive / Texas / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 48, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at May 11, 2009, 6:19 AM CDT for Deaf Smith County, Randall County, Texas. It was in force for 34 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 11, 2009, 6:19 AM CDT (11:19 UTC)
- Expired
- May 11, 2009, 6:53 AM CDT
- In force
- 34 min
- Issued by
- NWS Amarillo, TX
- Area
- Storm-based polygon
Counties Deaf Smith County, TX, Randall County, TX
The radar
The Amarillo radar (KAMA), 58 km from the middle of the area, began a volume at 11:22 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
Midland Regional, TX (KMAF), launched 00:00Z, 11.3 hours before the alert went out and 335 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
- 863 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 2691 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 11, 6:14 AM CDT, 5 minutes earlier.
Area forecast discussion, May 11, 6:14 AM CDT, 5 minutes before
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</html>Hazardous weather outlook, May 11, 5:22 AM CDT, 57 minutes before
TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 522 AM CDT MON MAY 11 2009 OKZ001>003-TXZ001>020-111800- ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH- DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE- OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER- 522 AM CDT MON MAY 11 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE... THUNDERSTORMS WILL BE POSSIBLE ACROSS THE TEXAS AND OKLAHOMA PANHANDLES TODAY AND TONIGHT. THE STRONGEST STORMS MAY APPROACH SEVERE CRITERIA WITH LARGE HAIL BEING THE MAIN THREAT. .DAYS TWO THROUGH SEVEN... THERE IS A SLIGHT CHANCE OF THUNDERSTORMS ACROSS THE EASTERN PANHANDLES TUESDAY NIGHT. SOME OF THESE STORMS MAY BE SEVERE WITH LARGE HAIL AND STRONG WINDS BEING THE MAIN THREATS. THUNDERSTORMS WILL AGAIN BE POSSIBLE ACROSS MOST OF THE TEXAS AND OKLAHOMA PANHANDLES ON WEDNESDAY THROUGH THURSDAY NIGHT...AND AGAIN FRIDAY NIGHT AND SATURDAY. WIDESPREAD SEVERE WEATHER IS NOT ANTICIPATED ON THESE DAYS. .SPOTTER INFORMATION STATEMENT... SPOTTER GROUPS AND EMERGENCY MANAGERS ACROSS THE EASTERN PANHANDLES SHOULD MONITOR THE LATEST FORECASTS FOR POSSIBLE ACTIVATION TUESDAY NIGHT. SJOHNSON
In the hours before
Special weather statement, May 11, 3:10 AM CDT, 3 hours 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 310 AM CDT MON MAY 11 2009 TXZ016-110845- DEAF SMITH TX- 310 AM CDT MON MAY 11 2009 ...STRONG THUNDERSTORM ACROSS WESTERN DEAF SMITH COUNTY... AT 310 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 12 MILES NORTHWEST OF BOOTLEG...OR ABOUT 34 MILES WEST OF HEREFORD...MOVING EAST AT 25 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 30 MPH ARE POSSIBLE. PERSONS IN THE PATH OF THESE STORMS SHOULD CLOSELY MONITOR WEATHER RADIO OR OTHER MEDIA FOR OTHER UPDATES AND POSSIBLE WARNINGS. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. SJOHNSON
Special weather statement, May 11, 3:50 AM CDT, 2 hours 29 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 350 AM CDT MON MAY 11 2009 TXZ015-110915- WHEELER TX- 350 AM CDT MON MAY 11 2009 ...STRONG THUNDERSTORM ACROSS EASTERN WHEELER COUNTY... AT 349 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES NORTHEAST OF TWITTY...OR ABOUT 10 MILES NORTH OF SHAMROCK...MOVING EAST AT 20 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 30 MPH ARE POSSIBLE. PERSONS IN THE PATH OF THESE STORMS SHOULD CLOSELY MONITOR WEATHER RADIO OR OTHER MEDIA FOR OTHER UPDATES AND POSSIBLE WARNINGS. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. SJOHNSON
Special weather statement, May 11, 3:52 AM CDT, 2 hours 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 352 AM CDT MON MAY 11 2009 TXZ012-110915- POTTER TX- 352 AM CDT MON MAY 11 2009 ...STRONG THUNDERSTORM ACROSS NORTHERN POTTER COUNTY... AT 351 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES EAST OF VALLEY DE ORO...OR ABOUT 21 MILES NORTHWEST OF AMARILLO...MOVING EAST AT 35 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 30 MPH ARE POSSIBLE. PERSONS IN THE PATH OF THESE STORMS SHOULD CLOSELY MONITOR WEATHER RADIO OR OTHER MEDIA FOR OTHER UPDATES AND POSSIBLE WARNINGS. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. SJOHNSON
Special weather statement, May 11, 3:55 AM CDT, 2 hours 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 355 AM CDT MON MAY 11 2009 TXZ016-110930- DEAF SMITH TX- 355 AM CDT MON MAY 11 2009 ...STRONG THUNDERSTORM ACROSS DEAF SMITH COUNTY... AT 351 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 7 MILES NORTHWEST OF BOOTLEG...OR ABOUT 29 MILES WEST OF HEREFORD...MOVING EAST AT 30 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE. PERSONS IN THE PATH OF THESE STORMS SHOULD CLOSELY MONITOR WEATHER RADIO OR OTHER MEDIA FOR OTHER UPDATES AND POSSIBLE WARNINGS. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. SJOHNSON
Special weather statement, May 11, 5:01 AM CDT, 1 hour 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 501 AM CDT MON MAY 11 2009 TXZ016-111030- DEAF SMITH TX- 501 AM CDT MON MAY 11 2009 ...STRONG THUNDERSTORM ACROSS DEAF SMITH COUNTY... AT 500 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 11 MILES SOUTH OF SIMMS...OR ABOUT 13 MILES WEST OF HEREFORD...MOVING EAST AT 35 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 30 MPH ARE POSSIBLE. PERSONS IN THE PATH OF THESE STORMS SHOULD CLOSELY MONITOR WEATHER RADIO OR OTHER MEDIA FOR OTHER UPDATES AND POSSIBLE WARNINGS. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. SJOHNSON
Special weather statement, May 11, 6:06 AM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 606 AM CDT MON MAY 11 2009 TXZ016-017-111130- RANDALL TX-DEAF SMITH TX- 606 AM CDT MON MAY 11 2009 ...STRONG THUNDERSTORM ACROSS EASTERN DEAF SMITH AND WESTERN RANDALL COUNTIES... AT 605 AM CDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 8 MILES WEST OF DAWN...OR ABOUT 9 MILES NORTH OF HEREFORD...MOVING EAST AT 30 MPH. UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 30 MPH ARE POSSIBLE. PERSONS IN THE PATH OF THESE STORMS SHOULD CLOSELY MONITOR WEATHER RADIO OR OTHER MEDIA FOR OTHER UPDATES AND POSSIBLE WARNINGS. BE PREPARED TO TAKE ACTION IF A WARNING IS ISSUED. SJOHNSON
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.