Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 81, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 2, 2003, 12:15 AM CDT for Polk County, Texas. It was in force for 60 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
- May 2, 2003, 12:15 AM CDT (05:15 UTC)
- Expired
- May 2, 2003, 1:15 AM CDT
- In force
- 60 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
County Polk County, TX
The radar
The Houston radar (KHGX), 149 km from the middle of the area, began a volume at 05:17 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
Lake Charles Mun, LA (KLCH), launched 00:00Z, 5.3 hours before the alert went out and 173 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
- 2084 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 1, 11:58 PM CDT, 17 minutes earlier.
Area forecast discussion, May 1, 11:58 PM CDT, 17 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1158 PM CDT THU MAY 1 2003
UPDATED THE ZONES A WHILE AGO FOR SEVERE THUNDERSTORM WATCH IN
EFFECT FOR EASTERN PORTIONS OF SOUTHEAST TEXAS UNTIL 300 AM CDT.
.HGX...SEVERE THUNDERSTORM WATCH FOR EASTERN PORTIONS OF SOUTHEAST
TEXAS UNTIL 300 AM CDT.
42/46/31
UPDATED PRELIMS...
CLL EB 070/087 069/090 068 523
IAH EB 070/087 069/090 069 522
GLS EB 072/083 072/084 072 522Hazardous weather outlook, May 1, 9:00 PM CDT, 3 hours 15 minutes before
GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-021200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 900 PM CDT THU MAY 1 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS. .DAY ONE...TONIGHT. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS THE NORTHERN PORTIONS OF SOUTHEAST TEXAS. SCATTERED SHOWERS AND THUNDERSTORMS ACROSS CENTRAL TEXAS CONTINUE TO MOVE SOUTHEAST AT 20 MPH. SOME OF THESE STORMS HAVE A HISTORY OF PRODUCING LARGE HAIL AND DAMAGING WINDS. AT THIS TIME...IT APPEARS THAT SOME OF THESE SEVERE THUNDERSTORMS HAVE THE POTENTIAL TO EDGE THEIR WAY INTO THE NORTHERN PORTIONS OF SOUTHEAST TEXAS THIS EVENING ROUGHLY ALONG AND NORTH OF A LINE FROM BRENHAM TO HUNTSVILLE TO LIVINGSTON. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THURSDAY...AN UPPER LEVEL DISTURBANCE WILL COMBINE WITH A STRONGLY UNSTABLE AIRMASS TO PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS ACROSS SOUTHEAST TEXAS DURING THE LATE AFTERNOON AND EVENING. A FEW STORMS COULD BECOME SEVERE...ESPECIALLY OVER THE WESTERN AND NORTHERN PORTIONS OF SOUTHEAST TEXAS. THE MAGNITUDE OF THE SEVERE WEATHER THREAT WILL BECOME MORE CERTAIN WITH LATER FORECASTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING AS THE STORMS TO THE NORTHWEST OF THE AREA CONTINUE TO HEAD TOWARD SOUTHEAST TEXAS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 9:43 PM CDT | Severe Thunderstorm Warning | HGX | Brazos | 62 min |
| May 1, 9:52 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 53 min |
| May 1, 10:00 PM CDT | Severe Thunderstorm Warning | HGX | Madison | 60 min |
| May 1, 10:41 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Walker | 64 min |
| May 1, 10:45 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 60 min |
| May 1, 10:46 PM CDT | Severe Thunderstorm Warning | HGX | Brazos | 59 min |
| May 1, 11:00 PM CDT | Severe Thunderstorm Warning | HGX | Madison | 30 min |
| May 1, 11:04 PM CDT | Severe Thunderstorm Warning | HGX | Trinity | 56 min |
| May 1, 11:14 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto | 61 min |
| May 1, 11:49 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 56 min |
| May 1, 11:56 PM CDT | Severe Thunderstorm Warning | HGX | Trinity | 64 min |
| May 2, 12:17 AM CDT | Severe Thunderstorm Warning | HGX | San Jacinto | 58 min |
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; radar from the NEXRAD Level II archive.