Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 99, NWS Corpus Christi, TX

November 23, 2004Calhoun County, Victoria County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Nov 23, 2004, 9:11 PM CST for Calhoun County, Victoria County, Texas. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Nov 23, 2004, 9:11 PM CST (03:11 UTC)
Expired: Nov 23, 2004, 10:15 PM CST
In force: 64 min
Issued by: NWS Corpus Christi, TX
Area: Counties, with a storm outline in the text

Counties Calhoun County, TX, Victoria County, TX

The radar

The Corpus Christi radar (KCRP), 115 km from the middle of the area, began a volume at 03:13 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 23, 7:50 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 3.2 hours before the alert went out and 110 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: 3323 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 782 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KCRP 240314
SVRCRP
TXC057-469-240415-
/X.NEW.KCRP.SV.W.0007.041124T0311Z-041124T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
911 PM CST TUE NOV 23 2004

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CALHOUN COUNTY IN TEXAS
  VICTORIA COUNTY IN TEXAS

* UNTIL 1015 PM CST

* AT 906 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL SIZE   
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS   
WERE LOCATED ALONG A LINE FROM FANNIN TO 9 MILES WEST OF MCFADDIN TO 
REFUGIO...AND WERE MOVING EAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MCFADDIN BY 920 PM CST
  BLOOMINGTON BY 925 PM CST
  TELFERNER AND PLACEDO BY 930 PM CST
  LONG MOTT AND KAMAY BY 935 PM CST
  SEADRIFT AND PORT LAVACA BY 940 PM CST

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 2833 9640 2807 9683 2817 9681 2828 9660
      2821 9679 2842 9680 2851 9690 2854 9715
      2879 9716 2888 9723 2885 9730 2910 9698
      2903 9684 2857 9658 2850 9648 2859 9648
      2869 9657 2871 9640 2863 9632 2861 9637

$$

JR

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 Nov 23, 7:55 PM CST, 1 hour 16 minutes earlier.

Area forecast discussion, Nov 23, 7:55 PM CST, 1 hour 16 minutes before

AREA FORECAST DISCUSSION...UPDATE
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
755 PM CST TUE NOV 23 2004

.DISCUSSION...AFTER LOOKING AT THE 00Z CRP SOUNDING WITH THE STRONG
INVERSION AROUND 80H AND VEERING FLOW AT 85H...FIRST THOUGHTS WERE
TO AGREE WITH MODELS THAT ACTIVITY WOULD STAY NORTH OF THE AREA.
BUT LIFT ASSOCIATED WITH STRONG VORTICITY ADVECTION WITH VORTICITY
MAXIMUM NEAR SAN ANGELO IS OVERCOMING THE CONVECTIVE INHIBITION OVER
THE AREA. 00Z CRP SOUNDING SHOWED VERY STEEP MID LEVEL LAPSE RATES
WITH CAPE VALUES AROUND 2000 J/KG. VERY IMPRESSIVE 0-6 KM SHEAR WITH
30 KNOT LOW LEVEL FLOW AND 60 KNOTS AT 50H. A WEAK COASTAL TROUGH
IS LYING OVER THE COASTAL PLAINS OF THE COASTAL BEND WHICH WILL
KEEP THE FOCUS FOR CONVECTIVE DEVELOPMENT OVER THIS REGION FOR
THE NEXT FEW HOURS. THE THREAT FOR TORNADOES WILL CONTINUE OVER THE
NORTHERN COASTAL BEND INTO THE VICTORIA CROSSROADS THROUGH THE
REMAINDER OF THE EVENING HOURS UNTIL THE FRONT...MOVING INTO THE
NORTHWEST COUNTIES AT THIS TIME...MOVES INTO THE COASTAL WATERS
AFTER 06Z. WILL UPDATE FORECAST TO BUMP UP POPS AND INCLUDE SEVERE
THREAT. SPC HAS JUST ISSUED A TORNADO WATCH FOR THE NORTHEAST PART
OF THE FORECAST AREA AND ADJACENT COASTAL WATERS UNTIL 2 AM.

.CRP WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY IS IN EFFECT FOR ALL THE WATERS.

&&

TMT

Hazardous weather outlook, Nov 23, 8:17 PM CST, 54 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
817 PM CST TUE NOV 23 2004

GMZ230-235-250-255-270-275-TXZ229>234-239>247-241217-
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-
ARANSAS-BEE-CALHOUN-DUVAL-GOLIAD-JIM WELLS-KLEBERG-LA SALLE-LIVE OAK-
MCMULLEN-NUECES-REFUGIO-SAN PATRICIO-VICTORIA-WEBB-
817 PM CST TUE NOV 23 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS.

.DAY ONE...TONIGHT

...A TORNADO WATCH IS IN EFFECT UNTIL 2 AM WEDNESDAY MORNING FOR
THE NORTHERN COASTAL BEND AND VICTORIA CROSSROADS AND ADJACENT
COASTAL WATERS...

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL MOVE
ACROSS SOUTH TEXAS IN ADVANCE OF A STRONG UPPER LEVEL DISTURBANCE
MOVING ACROSS CENTRAL TEXAS. LARGE HAIL AND DAMAGING WINDS WILL
BE LIKELY WITH THESE SEVERE THUNDERSTORMS. WITH A STRONG WIND PROFILE
AND A WEAK BOUNDARY OVER THE COASTAL PLAINS...ISOLATED
TORNADOES WILL ALSO BE POSSIBLE. A COLD FRONT WILL MOVE INTO THE
REGION AFTER MIDNIGHT WITH THE THUNDERSTORM ACTIVITY MOVING
EAST OF THE COASTAL BEND.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

WINDS WILL INCREASE OUT OF THE NORTH BEHIND A COLD FRONT WITH SMALL
CRAFT ADVISORIES LIKELY. WINDS WILL DIMINISH THROUGH THURSDAY.
ANOTHER COLD FRONT ON SATURDAY WILL RESULT IN STRONG NORTH WINDS
OVER THE COASTAL WATERS WITH SMALL CRAFT ADVISORIES LIKELY. THERE IS
A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE
WEEKEND...HOWEVER NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY OVER THE NORTHERN COASTAL
BEND AND VICTORIA CROSSROADS THIS EVENING.

TMT

In the hours before

Local storm report, Nov 23, 8:25 PM CST, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
825 PM CST TUE NOV 23 2004

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

0818 PM     TSTM WND DMG     MISSION VALLEY          28.85N 97.16W
11/23/2004                   VICTORIA           TX   AMATEUR RADIO

            SPOTTERS REPORTED FUNNEL CLOUD AND WIND DAMAGE IN MISSION
            VALLEY AREA.

&&

JM

Local storm report, Nov 23, 9:07 PM CST, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
907 PM CST TUE NOV 23 2004

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

0905 PM     HAIL             MATHIS                  28.09N 97.82W
11/23/2004  0.75 INCH        SAN PATRICIO       TX   LAW ENFORCEMENT

&&

JM

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 23, 7:07 PM CST	Tornado Warning	CRP	Live Oak	23 min
Nov 23, 7:50 PM CST	Severe Thunderstorm Warning	CRP	Goliad	55 min
Nov 23, 7:58 PM CST	Flash Flood Warning	CRP	Goliad	92 min
Nov 23, 8:11 PM CST	Severe Thunderstorm Warning	CRP	Victoria	64 min
Nov 23, 8:14 PM CST	Tornado Warning	CRP	Bee, Live Oak	46 min
Nov 23, 8:41 PM CST	Flash Flood Warning	CRP	Victoria	109 min
Nov 23, 8:44 PM CST	Severe Thunderstorm Warning	CRP	Duval, Jim Wells	46 min
Nov 23, 8:44 PM CST	Severe Thunderstorm Warning	CRP	Goliad	61 min
Nov 23, 9:02 PM CST	Severe Thunderstorm Warning	CRP	Bee, Refugio, San Patricio	58 min
Nov 23, 9:26 PM CST	Severe Thunderstorm Warning	CRP	Nueces	64 min
Nov 23, 9:34 PM CST	Severe Thunderstorm Warning	CRP	Webb	26 min
Nov 23, 9:43 PM CST	Special Marine Warning	CRP		2 hr
Nov 23, 9:52 PM CST	Severe Thunderstorm Warning	CRP	Duval	23 min
Nov 23, 10:14 PM CST	Severe Thunderstorm Warning	CRP	Jim Wells	31 min
Nov 23, 10:20 PM CST	Severe Thunderstorm Warning	CRP	Duval, Jim Wells	25 min
Nov 23, 10:31 PM CST	Severe Thunderstorm Warning	CRP	Nueces	29 min
Nov 23, 10:36 PM CST	Special Marine Warning	CRP		3 hr
Nov 23, 10:50 PM CST	Severe Thunderstorm Warning	CRP	San Patricio	25 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Every 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.