Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 24, NWS Amarillo, TX

April 26, 2009Lipscomb County, Ochiltree County, Texas; Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 26, 2009, 11:28 AM CDT for Lipscomb County, Ochiltree County, Texas; Beaver County, Oklahoma. It was in force for 62 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
Apr 26, 2009, 11:28 AM CDT (16:28 UTC)
Expired
Apr 26, 2009, 12:30 PM CDT
In force
62 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon

Counties Beaver County, OK, Lipscomb County, TX, Ochiltree County, TX

The radar

The Dodge City radar (KDDC), 155 km from the middle of the area, began a volume at 16:31 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 26, 11:07 AM CDTTornado Watch PDSSPC7 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 4.5 hours before the alert went out and 158 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.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2009-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1949 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 12:00Z on 2009-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 382 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1949 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
641 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
382 m²/s²
0-3 km storm-relative helicity
418 m²/s²
Significant tornado parameter
3.6
Supercell composite
18.1

Open this sounding in Storm Lab

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 Apr 26, 7:04 AM CDT, 4 hours 24 minutes earlier.

Area forecast discussion, Apr 26, 7:04 AM CDT, 4 hours 24 minutes before
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Hazardous weather outlook, Apr 26, 11:06 AM CDT, 22 minutes before
TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
1106 AM CDT SUN APR 26 2009

OKZ001>003-TXZ001>020-261800-
ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH-
DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE-
OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER-
1106 AM CDT SUN APR 26 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA
PANHANDLES.

.DAY ONE...

A TORNADO WATCH IS IN EFFECT FOR MUCH OF THE EASTERN OKLAHOMA AND
TEXAS PANHANDLES UNTIL 7 PM CDT. THUNDERSTORMS WILL BE POSSIBLE IN
THE CENTRAL AND EASTERN PANHANDLES TODAY. SOME OF THESE THUNDERSTORMS
COULD BECOME SEVERE. THE MAIN THREATS FROM THESE STORMS WILL BE LARGE
HAIL AND DAMAGING WINDS.

BREEZY WINDS WILL REQUIRE BOATERS TO EXERCISE CAUTION ON AREA LAKES
THROUGH TONIGHT.

CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TODAY ACROSS THE
WESTERN AND CENTRAL OKLAHOMA AND TEXAS PANHANDLES WHERE A RED FLAG
WARNING IN EFFECT FROM 11 AM TO 9 PM TODAY.

.DAYS TWO THROUGH SEVEN...

SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE IN THE SOUTHEAST
TEXAS PANHANDLE ON MONDAY AND MONDAY NIGHT...AND ACROSS ALL OF THE
TEXAS AND OKLAHOMA PANHANDLES ON TUESDAY AND TUESDAY NIGHT. ON
WEDNESDAY...SHOWERS AND THUNDERSTORMS ARE EXPECTED OVER THE EASTERN
HALF OF THE PANHANDLES. SOME OF THESE STORMS MAY BE SEVERE WITH LARGE
HAIL AND DAMAGING WINDS BEING THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS SHOULD CONTINUE TO
MONITOR THE LATEST FORECAST AND BE READY FOR POSSIBLE ACTIVATION
TODAY THROUGH WEDNESDAY.

WYNNE

In the hours before

Special weather statement, Apr 26, 10:41 AM CDT, 47 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1041 AM CDT SUN APR 26 2009

OKZ003-261615-
BEAVER OK-
1041 AM CDT SUN APR 26 2009

...STRONG THUNDERSTORM IN SOUTHEASTERN BEAVER COUNTY...

AT 1041 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES WEST OF SLAPOUT MOVING NORTHEAST AT 15
MPH.

HAIL UP TO ONE HALF OF AN INCH...STRONG WINDS...AND VERY HEAVY RAINFALL
ARE POSSIBLE WITH THIS STORM.

PEOPLE IN SOUTHEASTERN BEAVER COUNTY SHOULD MONITOR THE WEATHER
SITUATION CLOSELY...LISTEN FOR WARNINGS AND REMAIN ALERT FOR
THREATENING WEATHER CONDITIONS.

SJOHNSON
Special weather statement, Apr 26, 11:05 AM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1105 AM CDT SUN APR 26 2009

TXZ015-020-261630-
COLLINGSWORTH TX-WHEELER TX-
1105 AM CDT SUN APR 26 2009

...STRONG THUNDERSTORM IN NORTHWESTERN COLLINGSWORTH AND SOUTH
CENTRAL WHEELER COUNTIES...

AT 1105 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES WEST OF DOZIER MOVING NORTHEAST AT 15
MPH.

UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE.

PEOPLE IN NORTHWESTERN COLLINGSWORTH AND SOUTH CENTRAL WHEELER
COUNTIES...INCLUDING THE CITY OF SHAMROCK...SHOULD MONITOR THE
WEATHER SITUATION CLOSELY...LISTEN FOR WARNINGS AND REMAIN ALERT FOR
THREATENING WEATHER CONDITIONS.

SJOHNSON
Special weather statement, Apr 26, 11:11 AM CDT, 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1111 AM CDT SUN APR 26 2009

OKZ003-TXZ004-005-261645-
BEAVER OK-LIPSCOMB TX-OCHILTREE TX-
1111 AM CDT SUN APR 26 2009

...STRONG THUNDERSTORMS IN EASTERN BEAVER...NORTHWESTERN LIPSCOMB AND
NORTHEASTERN OCHILTREE COUNTIES...

AT 1111 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS OVER BOOKER MOVING NORTHEAST AT 15 MPH.

UP TO ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE.

PEOPLE IN EASTERN BEAVER...NORTHWESTERN LIPSCOMB AND NORTHEASTERN
OCHILTREE COUNTIES SHOULD MONITOR THE WEATHER SITUATION CLOSELY...
LISTEN FOR WARNINGS AND REMAIN ALERT FOR THREATENING WEATHER
CONDITIONS.

SJOHNSON

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 5:12 AM CDTRed Flag WarningAMAArmstrong, Carson, Dallam, Deaf Smith, Hansford, Hartley and 6 more16 hr
Apr 26, 11:14 AM CDTSevere Thunderstorm WarningAMACollingsworth, Wheeler41 min
Apr 26, 12:22 PM CDTSevere Thunderstorm WarningAMALipscomb, Ochiltree53 min
Apr 26, 12:39 PM CDTFlash Flood WarningAMALipscomb, Ochiltree4 hr
Apr 26, 12:48 PM CDTSevere Thunderstorm WarningAMAGray, Hemphill, Roberts57 min
Apr 26, 1:30 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb60 min
Apr 26, 1:54 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb66 min
Apr 26, 2:28 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb62 min
Apr 26, 2:53 PM CDTSevere Thunderstorm WarningAMAGray, Hemphill, Wheeler67 min
Apr 26, 3:23 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb, Roberts67 min
Apr 26, 3:39 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler66 min
Apr 26, 4:13 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler62 min
Apr 26, 4:38 PM CDTAreal Flood AdvisoryAMAHemphill, Wheeler4 hr
Apr 26, 4:40 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler55 min
Apr 26, 5:52 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb21 min
Apr 26, 12:35 PM CDTTornado WarningAMABeaver25 min

Nearby

Severe Thunderstorm Warnings in Texas, 2009Severe Thunderstorm Warnings in Oklahoma, 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.