Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 51, NWS Corpus Christi, TX

September 29, 20114 counties in Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Sep 29, 2011, 5:21 PM CDT for 4 counties in 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: Sep 29, 2011, 5:21 PM CDT (22:21 UTC)
Expired: Sep 29, 2011, 6:15 PM CDT
In force: 54 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon

Counties Bee County, TX, Goliad County, TX, Live Oak County, TX, Victoria County, TX

The radar

The Corpus Christi radar (KCRP), 86 km from the middle of the area, began a volume at 22:22 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

Corpus Christi, TX (KCRP), launched 12:00Z, 10.4 hours before the alert went out and 94 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3536 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 602 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -44 m²/s²
Significant tornado parameter: -0.5
Supercell composite: -3.2

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 Sep 29, 5:02 PM CDT, 19 minutes earlier.

Area forecast discussion, Sep 29, 5:02 PM CDT, 19 minutes before

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Hazardous weather outlook, Sep 29, 9:45 AM CDT, 7 hours 36 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
945 AM CDT THU SEP 29 2011

TXZ229>234-239>247-301445-
LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL-
JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN-
945 AM CDT THU SEP 29 2011

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

.DAY ONE...TODAY AND TONIGHT

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TODAY AND
TONIGHT. A FEW STORMS MAY BECOME STRONG WITH WIND GUSTS TO AROUND
40 MPH AND SMALL HAIL. OTHERWISE...NO ORGANIZED SEVERE WEATHER IS
EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ON FRIDAY. A FEW
STORMS MAY BECOME STRONG WITH WIND GUSTS TO AROUND 40 MPH...CLOUD
TO GROUND LIGHTNING AND SMALL HAIL. MODERATE TO HEAVY RAINFALL
WILL BE POSSIBLE WITH ISOLATED 1 TO 3 INCH AMOUNTS. OTHERWISE...NO
ORGANIZED SEVERE WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

GMZ230-235-250-255-270-275-301445-
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-
945 AM CDT THU SEP 29 2011

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED TODAY. SOME STORMS MAY BECOME
STRONG WITH WIND GUSTS TO AROUND 35 KNOTS...CLOUD TO SURFACE
LIGHTNING AND HEAVY RAINFALL LOWERING VISIBILITY TO LESS THAN ONE
NAUTICAL MILE AT TIMES. OTHERWISE...NO ORGANIZED SEVERE WEATHER IS
EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

TE

In the hours before

Local storm report, Sep 29, 2:32 PM CDT, 2 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
232 PM CDT THU SEP 29 2011

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

0226 PM     TSTM WND DMG     1 SSE EDROY             27.92N 97.66W
09/29/2011                   NUECES             TX   NWS EMPLOYEE

            MILE MARKER 22 ON I37...HIGHWAY SIGN BLOWN DOWN. LARGE
            PLASTIC DRUM BLOWN ACROSS INTERSTATE. ESTIMATED WIND
            GUSTS TO 60MPH.

&&

LKEYS

Special weather statement, Sep 29, 3:04 PM CDT, 2 hours 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
304 PM CDT THU SEP 29 2011

TXZ240>243-292100-
DUVAL-JIM WELLS-KLEBERG-NUECES-
304 PM CDT THU SEP 29 2011

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

AT 300 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
SEVERAL STRONG THUNDERSTORMS MOVING THROUGH NUECES...KLEBERG AND
SOUTHERN JIM WELLS COUNTIES...MOVING WEST AT 25 MPH. ISOLATED WIND
GUSTS UP TO 50 MPH WILL BE POSSIBLE WITHIN A FEW OF THESE STORMS.
MEANWHILE...AN OUTFLOW BOUNDARY STRETCHING FROM ALICE TO FALFURRIAS
WAS CONTINUING TO MOVE WEST AT 40 MPH. WINDS BETWEEN 30 AND 50 MPH
WILL BE POSSIBLE BEHIND THIS BOUNDARY.

PEOPLE IN KLEBERG...NUECES...SOUTHEASTERN DUVAL AND SOUTHERN JIM
WELLS COUNTIES...SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN
FOR POSSIBLE WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION
SHOULD SEVERE WEATHER THREATEN.

MB

Local storm report, Sep 29, 3:15 PM CDT, 2 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
315 PM CDT THU SEP 29 2011

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

0300 PM     TSTM WND DMG     ODEM                    27.95N 97.59W
09/29/2011                   SAN PATRICIO       TX   PUBLIC

            LARGE TREE BLOWN OVER...BLOCKING FRONT DOOR TO HOUSE IN
            ODEM.

0253 PM     TSTM WND DMG     SINTON                  28.03N 97.51W
09/29/2011                   SAN PATRICIO       TX   LAW ENFORCEMENT

            TREE BLOWN ONTO POWERLINES...STARTING SMALL FIRE IN
            SINTON.

&&

LKEYS

Special weather statement, Sep 29, 3:30 PM CDT, 1 hour 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
330 PM CDT THU SEP 29 2011

TXZ229-230-239>241-292115-
DUVAL-JIM WELLS-LA SALLE-MCMULLEN-WEBB-
330 PM CDT THU SEP 29 2011

...STRONG THUNDERSTORMS WERE AFFECTING DUVAL...JIM WELLS...LA
SALLE...MCMULLEN AND WEBB COUNTIES...

AT 326 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES SOUTHEAST OF
TILDEN TO 6 MILES SOUTH OF CRUZ CALLE...OR ALONG A LINE EXTENDING
FROM 6 MILES SOUTHEAST OF TILDEN TO 8 MILES SOUTHWEST OF
PREMONT...MOVING SOUTHWEST AT 35 MPH.

WINDS 40 TO 50 MPH ARE EXPECTED WELL OUT AHEAD OF THESE STORMS ALONG
A GUST FRONT.

GRANTHAM

Special weather statement, Sep 29, 4:13 PM CDT, 1 hour 8 minutes before

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Special weather statement, Sep 29, 5:13 PM CDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 29, 11:33 AM CDT	Special Marine Warning	CRP		57 min
Sep 29, 12:03 PM CDT	Areal Flood Advisory	CRP	Calhoun	117 min
Sep 29, 12:08 PM CDT	Special Marine Warning	CRP		67 min
Sep 29, 1:09 PM CDT	Special Marine Warning	CRP		96 min
Sep 29, 1:12 PM CDT	Special Marine Warning	CRP		63 min
Sep 29, 1:17 PM CDT	Severe Thunderstorm Warning	CRP	Aransas, Bee, Refugio, San Patricio	43 min
Sep 29, 1:58 PM CDT	Severe Thunderstorm Warning	CRP	Aransas, Bee, Refugio, San Patricio	47 min
Sep 29, 2:21 PM CDT	Severe Thunderstorm Warning	CRP	Nueces, San Patricio	39 min
Sep 29, 2:32 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Live Oak, McMullen, Nueces, San Patricio	58 min
Sep 29, 3:40 PM CDT	Severe Thunderstorm Warning	CRP	La Salle	16 min
Sep 29, 5:20 PM CDT	Flash Flood Warning	CRP	Webb	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2011 Every severe thunderstorm warning in 2011

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.