Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 83, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 12, 2003, 1:59 PM CDT for Austin County, Washington County, Texas. It was in force for 31 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
- May 12, 2003, 1:59 PM CDT (18:59 UTC)
- Expired
- May 12, 2003, 2:30 PM CDT
- In force
- 31 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties Austin County, TX, Washington County, TX
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 nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 7.0 hours before the alert went out and 274 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.
- Mixed-layer CAPE
- 1874 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 545 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
519 WUUS54 KHGX 121859 SVRHOU TXC015-477-121930- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 157 PM CDT MON MAY 12 2003 THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WASHINGTON COUNTY IN SOUTHEAST TEXAS AUSTIN COUNTY IN SOUTHEAST TEXAS * UNTIL 230 PM CDT * AT 149 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR SHELBY...MOVING NORTHEAST AT 25 MPH. THIS STORM WILL LIKELY PRODUCE DIME TO ONE INCH DIAMETER HAIL. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... INDUSTRY...SHELBY BRENHAM MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. STAY AWAY FROM WINDOWS PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE... OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE. LAT...LON 3003 9666 2991 9652 3011 9617 3029 9632 $$
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 Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 12, 1:30 PM CDT, 29 minutes earlier.
Area forecast discussion, May 12, 1:30 PM CDT, 29 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 130 PM CDT MON MAY 12 2003 AS OF 18Z...WARM FRONT WAS LOCATED NEAR A LINE FROM NEAR BEAUMONT TO JUST SOUTH OF INTERCONTINENTAL TO JUST SOUTH OF AUSTIN. DEWPOINTS IN THE 70S HAVE ALREADY RETURNED INLAND...AND WILL CONTINUE TO SPREAD INLAND AS THE FRONT LIFTS TO THE NORTH. AN AREA OF THUNDERSTORMS CONTINUES TO APPROACH THE NORTHWESTERN PART OF OUR AREA THIS AFTERNOON. IT IS LIKELY THAT ANY THUNDERSTORM ACTIVITY WILL REMAIN ELEVATED AND WELL NORTH OF THE SURFACE FRONT. A RETURN TO HOT AND HUMID CONDITIONS APPEARS TO BE IN THE WORKS FOR SOUTHEAST TEXAS THIS WEEK. MID LEVEL RIDGE IS STILL FORECAST TO WORK WESTWARD AND SET UP SHOP OVER NORTHERN MEXICO LATER THIS WEEK...ALLOWING A NORTHWEST FLOW REGIME TO BECOME ESTABLISHED OVER THE AREA. IT IS POSSIBLE WE COULD SEE SOME ISOLATED SHOWERS AND THUNDERSTORMS AS WEAK IMPULSES MOVE ACROSS THE RIDGE...BUT WIDESPREAD PRECIPITATION IS NOT LIKELY DUE TO THE STRONG... QUASI-PERMANENT RIDGE THAT HAS AFFECTED THE AREA OVER THE PAST SEVERAL WEEKS. IT LOOKS AS IF THIS WEEKEND WILL BRING THE NEXT SIGNIFICANT CHANCE FOR RAIN AS A MODERATELY STRONG VORT MAX MOVES SOUTHEASTWARD ACROSS THE SOUTHERN PLAINS. AS FAR AS TEMPERATURES GO...WE WILL DEFINITELY SEE THE UPPER 80S BY MID WEEK...AND PERHAPS THE LOW 90S BY THE END OF THE WEEK. FOR MARINE INTERESTS...THE WINDS AND SEAS SHOULD RELAX AS THE EVENING PROGRESSES. AT THIS TIME...WE ARE PLANNING ON NOT ISSUING A CAUTION STATEMENT...BUT A FINAL DETERMINATION WILL NOT BE MADE UNTIL ISSUANCE TIME. .HGX...NONE. PRELIMS... CLL BB 065/087 070/090 072 21- IAH BB 067/088 071/091 072 100 GLS BB 074/083 076/084 075 100
Hazardous weather outlook, May 12, 6:50 AM CDT, 7 hours 9 minutes before
GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238- 131100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 650 AM CDT MON MAY 12 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER EXPECTED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME. A STORM SYSTEM MAY APPROACH THE REGION FROM THE NORTHWEST LATE FRIDAY OR SATURDAY. SIGNIFICANT RAINFALL MAY BE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
Nearby
Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm warning in 2003
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.