Alert archive / Texas / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 22, NWS Corpus Christi, TX

May 18, 2010La Salle County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at May 18, 2010, 1:51 AM CDT for La Salle County, Texas. It was in force for 54 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 18, 2010, 1:51 AM CDT (06:51 UTC)
Expired
May 18, 2010, 2:45 AM CDT
In force
54 min
Issued by
NWS Corpus Christi, TX
Area
Storm-based polygon

County La Salle County, TX

The radar

The Laughlin AFB radar (KDFX), 154 km from the middle of the area, began a volume at 06:52 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
May 17, 9:57 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 6.9 hours before the alert went out and 186 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 00:00Z on 2010-05-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1401 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 00:00Z on 2010-05-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.193958Sfc1 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
1401 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1374 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.4

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 May 18, 12:18 AM CDT, 1 hour 33 minutes earlier.

Area forecast discussion, May 18, 12:18 AM CDT, 1 hour 33 minutes before
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Hazardous weather outlook, May 17, 10:24 PM CDT, 3 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1024 PM CDT MON MAY 17 2010

GMZ230-235-250-255-270-275-TXZ229>234-239>247-181200-
BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS-
BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT O'CONNOR-
COASTAL WATERS FROM BAFFIN BAY TO PORT ARANSAS OUT 20 NM-
COASTAL WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT
20 NM-WATERS FROM BAFFIN BAY TO PORT ARANSAS FROM 20 TO 60 NM-
WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL FROM 20 TO
60 NM-LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL-
JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN-
1024 PM CDT MON MAY 17 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE
TEXAS COASTAL WATERS.

.DAY ONE...TONIGHT

THERE IS A CHANCE FOR THUNDERSTORMS TONIGHT OVER THE AREA. SOME
STORMS COULD BECOME SEVERE...WITH WINDS IN EXCESS OF 60 MPH AND
HAIL THE SIZE OF A QUARTER OR LARGER. THE MAIN THREAT FOR SEVERE
WEATHER WILL BE GENERALLY NEAR AND NORTH OF A RIO BRAVO TO FREER
TO SINTON LINE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

.SPOTTER INFORMATION STATEMENT...

ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE ACROSS THE
AREA ON TUESDAY...WITH ISOLATED THUNDERSTORMS POSSIBLE OVER THE
NORTHERN COASTAL BEND ON THURSDAY. NO ORGANIZED SEVERE WEATHER IS
EXPECTED AT THIS TIME. HOWEVER..A FEW STRONG TO POSSIBLY SEVERE
THUNDERSTORMS WILL BE POSSIBLE MAINLY IN THE AFTERNOON HOURS.

GW

In the hours before

Local storm report, May 17, 10:18 PM CDT, 3 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1018 PM CDT MON MAY 17 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     HEAVY RAIN       3 N LAREDO              27.58N 99.49W
05/16/2010  M0.81 INCH       WEBB               TX   CO-OP OBSERVER

            HEAVY RAIN...0.81 INCH IN 20 MIN. COCORAHS. PEA SIZE HAIL
            NOTED.

0800 PM     HAIL             LAREDO                  27.53N 99.49W
05/16/2010  M0.88 INCH       WEBB               TX   EMERGENCY MNGR

            FIRST RESPONDER REPORTED

0810 PM     FLASH FLOOD      LAREDO                  27.53N 99.49W
05/16/2010                   WEBB               TX   EMERGENCY MNGR

            STREET CLOSURE AT SPRINGFIELD AND HILLSIDE.

0835 PM     FLASH FLOOD      LAREDO                  27.53N 99.49W
05/16/2010                   WEBB               TX   EMERGENCY MNGR

            VEHICLE STRANDED ALONG ACCESS ROAD OF INTERSTATE 35 AT
            MANN ROAD. ROAD CLOSED.

0855 PM     HEAVY RAIN       1 NNW LAREDO            27.55N 99.50W
05/16/2010  M2.56 INCH       WEBB               TX   CO-OP OBSERVER

            2.56 INCHES OF RAIN WITHIN 2 HOURS. COCORAHS.

0427 PM     HAIL             5 NNW MISSION VALLEY    28.91N 97.18W
05/17/2010  M1.00 INCH       VICTORIA           TX   TRAINED SPOTTER

0554 PM     HAIL             4 NW GOLIAD             28.71N 97.44W
05/17/2010  M0.50 INCH       GOLIAD             TX   TRAINED SPOTTER

&&

ATARDY
Special weather statement, May 18, 12:30 AM CDT, 1 hour 21 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 7:03 PM CDTAreal Flood AdvisoryCRPGoliad57 min
May 17, 11:58 PM CDTTornado WarningCRPVictoria35 min
May 18, 1:21 AM CDTSpecial Marine WarningCRP83 min
May 18, 2:35 AM CDTAreal Flood AdvisoryCRPLa Salle, Webb115 min
May 18, 2:53 AM CDTSevere Thunderstorm WarningCRPLa Salle, Webb67 min
May 18, 3:42 AM CDTSevere Thunderstorm WarningCRPDuval, La Salle, McMullen, Webb63 min
May 18, 4:36 AM CDTSevere Thunderstorm WarningCRPDuval, Webb54 min
May 18, 4:48 AM CDTFlash Flood WarningCRPDuval, Webb117 min
May 18, 5:04 AM CDTFlash Flood WarningCRPWebb116 min
May 18, 5:14 AM CDTAreal Flood AdvisoryCRPMcMullen2 hr
May 18, 5:23 AM CDTSevere Thunderstorm WarningCRPDuval, Webb52 min
May 18, 6:42 AM CDTSevere Thunderstorm WarningCRPDuval, Jim Wells, Kleberg63 min
May 18, 6:51 AM CDTFlash Flood WarningCRPDuval97 min
May 18, 7:42 AM CDTSevere Thunderstorm WarningCRPJim Wells, Kleberg, Nueces63 min
May 18, 7:51 AM CDTFlash Flood WarningCRPJim Wells, Kleberg88 min
May 18, 8:16 AM CDTSpecial Marine WarningCRP89 min
May 18, 9:47 AM CDTSpecial Marine WarningCRP73 min

Nearby

Severe Thunderstorm Warnings in Texas, 2010Every severe thunderstorm warning in 2010

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.