Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 33, NWS Corpus Christi, TX

April 6, 2004Calhoun County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 6, 2004, 12:14 PM CDT for Calhoun County, Texas. It was in force for 21 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 6, 2004, 12:14 PM CDT (17:14 UTC)
Expired
Apr 6, 2004, 12:35 PM CDT
In force
21 min
Issued by
NWS Corpus Christi, TX
Area
Counties, with a storm outline in the text

County Calhoun County, TX

The radar

The Corpus Christi radar (KCRP), 114 km from the middle of the area, began a volume at 17:16 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 6, 7:55 AM CDTTornado WatchSPC5 hr
Apr 6, 11:05 AM CDTTornado WatchSPC5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 5.2 hours before the alert went out and 106 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 2004-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1044 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 2004-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 133 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
1044 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
598 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
133 m²/s²
0-3 km storm-relative helicity
224 m²/s²
Significant tornado parameter
1.1
Supercell composite
9.2

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 Apr 6, 11:08 AM CDT, 1 hour 6 minutes earlier.

Area forecast discussion, Apr 6, 11:08 AM CDT, 1 hour 6 minutes before
SOUTH TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1108 AM CDT TUE APR 6 2004

.UPDATE...IN ADDITION TO RECENT UPDATES DISCUSSED...WL ADJUST THE
FFA AND PLACE IT OVER THE ERN CWFA UNTIL 21Z. WL ALSO UPDATE THE
FCST TO PLACE THE NEW TORNADO WATCH.

&&

.CRP WATCHES/WARNINGS/ADVISORIES...FLASH FLOOD WATCH UNTIL 21Z
                                   TXZ231>234-242>247
                                   TORNADO WATCH UNTIL 21Z
                                   TXZ231>234-241>247
                                   SCA FOR OFFSHORE WATERS.
&&

87/SHORT-TERM
Hazardous weather outlook, Apr 6, 12:10 PM CDT, 4 minutes before
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In the hours before

Local storm report, Apr 6, 11:33 AM CDT, 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1133 AM CDT TUE APR 06 2004

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

1125 AM     HAIL             TIVOLI                  28.43N 96.88W
04/06/2004  1.75 INCH        REFUGIO            TX   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED GOLF BALL SIZED HAIL IN TIVOLI.

1125 AM     TORNADO          5 N TIVOLI              28.51N 96.88W
04/06/2004                   CALHOUN            TX   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED A TORNADO ON THE GROUND 5 MILES
            NORTH OF TIVOLI.

1120 AM     HAIL             TIVOLI                  28.43N 96.88W
04/06/2004  1.75 INCH        REFUGIO            TX   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED GOLF BALL SIZED HAIL AND LARGE
            TREE LIMBS DOWN IN THE CITY OF TIVOLI.

1115 AM     TSTM WND GST     TIVOLI                  28.43N 96.88W
04/06/2004  70 MPH           REFUGIO            TX   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED 70 MPH WINDS AND PEA-SIZED HAIL
            IN THE CITY OF TIVOLI.

1100 AM     FLASH FLOOD      10 NNE REFUGIO          28.44N 97.21W
04/06/2004                   REFUGIO            TX   TRAINED SPOTTER

            TRAINED SPOTTER REPORTED WATER OVER THE ROAD AT HIGHWAY
            239 AND HIGHWAY 77

&&

MJ
Local storm report, Apr 6, 11:49 AM CDT, 25 minutes before
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Local storm report, Apr 6, 11:56 AM CDT, 18 minutes before
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Special weather statement, Apr 6, 12:04 PM CDT, 10 minutes before
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Local storm report, Apr 6, 12:12 PM CDT, 2 minutes before
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Local storm report, Apr 6, 12:13 PM CDT, 1 minute before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 8:15 AM CDTFlash Flood WarningCRPBee, Goliad2 hr
Apr 6, 8:53 AM CDTTornado WarningCRPBee, Goliad37 min
Apr 6, 9:30 AM CDTTornado WarningCRPGoliad30 min
Apr 6, 9:44 AM CDTSpecial Marine WarningCRP2 hr
Apr 6, 10:00 AM CDTTornado WarningCRPGoliad, Refugio, Victoria45 min
Apr 6, 10:07 AM CDTSevere Thunderstorm WarningCRPNueces, San Patricio53 min
Apr 6, 10:09 AM CDTFlash Flood WarningCRPGoliad, Refugio, Victoria3 hr
Apr 6, 10:22 AM CDTSevere Thunderstorm WarningCRPJim Wells, Kleberg53 min
Apr 6, 10:23 AM CDTFlash Flood WarningCRPNueces, San Patricio2 hr
Apr 6, 10:27 AM CDTTornado WarningCRPKleberg, Nueces48 min
Apr 6, 10:46 AM CDTSevere Thunderstorm WarningCRPCalhoun, Refugio, Victoria59 min
Apr 6, 10:55 AM CDTTornado WarningCRPCalhoun, Victoria50 min
Apr 6, 10:58 AM CDTFlash Flood WarningCRPCalhoun2 hr
Apr 6, 11:05 AM CDTTornado WarningCRPNueces40 min
Apr 6, 11:10 AM CDTSevere Thunderstorm WarningCRPRefugio, San Patricio65 min
Apr 6, 11:16 AM CDTTornado WarningCRPNueces44 min
Apr 6, 11:38 AM CDTSpecial Marine WarningCRP2 hr
Apr 6, 11:44 AM CDTTornado WarningCRPCalhoun61 min
Apr 6, 2:37 PM CDTSpecial Marine WarningCRP83 min
Apr 6, 4:39 PM CDTSpecial Marine WarningCRP66 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004Every severe thunderstorm warning in 2004

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.