Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 1, NWS Corpus Christi, TX

March 26, 2009Live Oak County, McMullen County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Mar 26, 2009, 12:54 PM CDT for Live Oak County, McMullen County, Texas. It was in force for 66 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
Mar 26, 2009, 12:54 PM CDT (17:54 UTC)
Expired
Mar 26, 2009, 2:00 PM CDT
In force
66 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon

Counties Live Oak County, TX, McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 104 km from the middle of the area, began a volume at 17:56 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

Corpus Christi, TX (KCRP), launched 12:00Z, 5.9 hours before the alert went out and 121 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, Corpus Christi, TX at 12:00Z on 2009-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1677 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, Corpus Christi, TX at 12:00Z on 2009-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.1939587897117Sfc1 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
1677 J/kg
Mixed-layer CIN
-236 J/kg
Mixed-layer LCL
915 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 Corpus Christi, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 26, 12:34 PM CDT, 20 minutes earlier.

Area forecast discussion, Mar 26, 12:34 PM CDT, 20 minutes before
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Hazardous weather outlook, Mar 26, 10:02 AM CDT, 2 hours 52 minutes before
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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In the hours before

Special weather statement, Mar 26, 11:29 AM CDT, 1 hour 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1129 AM CDT THU MAR 26 2009

TXZ240-241-261730-
DUVAL-JIM WELLS-
1129 AM CDT THU MAR 26 2009

...A STRONG THUNDERSTORM WAS AFFECTING DUVAL AND JIM WELLS
COUNTIES...

AT 1128 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 8 MILES WEST OF ROSITA...OR 10 MILES SOUTHEAST
OF FREER...MOVING NORTHEAST AT 30 MPH.

THIS STORM WILL BE NEAR...
  ROSITA BY 1140 AM CDT.

PEA SIZE HAIL AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

TMT

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 26, 4:11 AM CDTSmall Craft Advisory for Hazardous SeasCRP32 hr
Mar 26, 6:02 AM CDTFire Weather WatchCRPAransas, Bee, Calhoun, Duval, Goliad, Jim Wells and 9 more33 hr
Mar 26, 1:40 PM CDTSevere Thunderstorm WarningCRPBee, Goliad, Live Oak50 min
Mar 26, 2:12 PM CDTSevere Thunderstorm WarningCRPLive Oak48 min
Mar 26, 2:32 PM CDTTornado WarningCRPLive Oak28 min
Mar 26, 2:46 PM CDTTornado WarningCRPBee, San Patricio29 min
Mar 26, 3:09 PM CDTTornado WarningCRPBee, Refugio, San Patricio51 min
Mar 26, 3:23 PM CDTTornado WarningCRPAransas, Refugio, San Patricio22 min
Mar 26, 3:29 PM CDTSpecial Marine WarningCRP2 hr
Mar 26, 3:40 PM CDTTornado WarningCRPAransas, Refugio, San Patricio50 min
Mar 26, 4:01 PM CDTSevere Thunderstorm WarningCRPNueces59 min
Mar 26, 4:48 PM CDTSevere Thunderstorm WarningCRPKleberg25 min
Mar 26, 5:23 PM CDTMarine Weather StatementCRP97 min
Mar 26, 6:10 PM CDTSpecial Marine WarningCRP35 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.