Alert archive / Texas / Red Flag Warnings in 2008

Red Flag Warning 12, NWS Corpus Christi, TX

March 18, 20088 counties in Texas

NWS Corpus Christi, TX issued this red flag warning at Mar 18, 2008, 6:46 AM CDT for 8 counties in Texas. It took effect at Mar 18, 2008, 1:00 PM CDT. It was in force for 8 hr. 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 18, 2008, 6:46 AM CDT (11:46 UTC)
In effect from
Mar 18, 2008, 1:00 PM CDT
Expired
Mar 18, 2008, 9:00 PM CDT
In force
8 hr
Issued by
NWS Corpus Christi, TX

Counties Duval County, TX, Jim Wells County, TX, Kleberg County, TX, La Salle County, TX, McMullen County, TX, Nueces County, TX, San Patricio County, TX, Webb County, TX

The radar

The Corpus Christi radar (KCRP), 77 km from the middle of the area, began a volume at 11:50 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 00:00Z, 11.8 hours before the alert went out and 95 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 2008-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 839 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 2008-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.1939587897Sfc1 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
839 J/kg
Mixed-layer CIN
-383 J/kg
Mixed-layer LCL
706 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
169 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag 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 red flag warning went out at Mar 18, 3:07 AM CDT, 3 hours 39 minutes earlier.

Area forecast discussion, Mar 18, 3:07 AM CDT, 3 hours 39 minutes before
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Hazardous weather outlook, Mar 18, 5:24 AM CDT, 1 hour 22 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
524 AM CDT TUE MAR 18 2008

GMZ230-235-250-255-270-275-TXZ229>234-239>247-191030-
BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS-
BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT OCONNOR-
COASTAL WATERS BAFFIN BAY TO PORT ARANSAS OUT 20 NM-
COASTAL WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT 20 NM-
WATERS BAFFIN BAY TO PORT ARANSAS 20 TO 60 NM-
WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL 20 TO 60 NM-
LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL-
JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN-
524 AM CDT TUE MAR 18 2008

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

.DAY ONE...TODAY AND TONIGHT

A STRONG COLD FRONT WILL PUSH THROUGH THE COASTAL BEND THIS
MORNING. ALTHOUGH THE ATMOSPHERE APPEARS TO BE CAPPED...DYNAMICS
ASSOCIATED WITH THE FRONT MAY BE ENOUGH TO OVERCOME THE CAP AS THE
FRONT MOVES THROUGH. ANY CONVECTION THAT DOES BREAK THE CAP WOULD
BE CAPABLE OF PRODUCING DAMAGING WINDS OR LARGE HAIL.

VERY DRY AIR FILTERING IN BEHIND THE FRONT WILL INCREASE FIRE
DANGER...ESPECIALLY OUT WEST WHERE A RED FLAG WARNING IS IN EFFECT
THIS AFTERNOON DUE TO THE COMBINATION OF VERY DRY AIR AND
PERSISTENT WINDS.

SMALL CRAFT ADVISORIES WILL CONTINUE FOR MARINE AREAS THROUGH
TODAY AND TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

BREEZY TO WINDY CONDITIONS WILL OCCUR ON WEDNESDAY. LOW RELATIVE
HUMIDITY WILL COMBINE WITH THESE GUSTY NORTHWEST WINDS...RESULTING
IN NEAR CRITICAL FIRE WEATHER CONDITIONS WEDNESDAY. A FIRE WEATHER
WATCH HAS BEEN ISSUED FOR THE RIO GRANDE PLAINS FOR WEDNESDAY.

SMALL CRAFT ADVISORY CONDITIONS WILL ALSO OCCUR DURING THE DAY
WEDNESDAY...BEFORE WINDS DIMINISH WEDNESDAY EVENING.

.LONG TERM FIRE WEATHER DISCUSSION...

HIGH PRESSURE WILL BUILD INTO THE AREA WEDNESDAY NIGHT AND WINDS
WILL DIMINISH. HIGH PRESSURE WILL MOVE EAST THURSDAY...ALLOWING FOR
A RETURN OF ONSHORE FLOW AND MOISTURE TO GRADUALLY RETURN THROUGH
THE END OF THE WEEK. A WEAK COLD FRONT WILL MOVE INTO THE AREA ON
SUNDAY.

.SPOTTER INFORMATION STATEMENT...SPOTTER ACTIVATION IS UNLIKELY TO
BE REQUIRED.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 18, 6:46 AM CDTFire Weather WatchCRPDuval, La Salle, McMullen, Webb7 hr
Mar 18, 10:23 AM CDTMarine Weather StatementCRP5 hr
Mar 18, 12:58 PM CDTWind AdvisoryCRPAransas, Bee, Calhoun, Duval, Goliad, Jim Wells and 9 more15 hr
Mar 18, 2:03 PM CDTRed Flag WarningCRPAransas, Bee, Calhoun, Goliad, Jim Wells, Kleberg and 5 more28 hr
Mar 18, 2:06 PM CDTSpecial Marine WarningCRP3 hr
Mar 18, 2:35 PM CDTTornado WarningCRPKleberg, Nueces25 min
Mar 18, 2:58 PM CDTTornado WarningCRPNueces32 min
Mar 18, 3:13 PM CDTTornado WarningCRPAransas, Calhoun32 min

Nearby

Red Flag Warnings in Texas, 2008Every red flag warning in 2008

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.