Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 54, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 7, 2003, 3:34 PM CDT for Fort Bend County, Harris County, Texas. It was in force for 56 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 7, 2003, 3:34 PM CDT (20:34 UTC)
- Expired
- Apr 7, 2003, 4:30 PM CDT
- In force
- 56 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties Fort Bend County, TX, Harris County, TX
The radar
The Houston radar (KHGX), 54 km from the middle of the area, began a volume at 20:38 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 7, 1:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 8.6 hours before the alert went out and 234 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
- 1791 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 518 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -64 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- -0.6
- Supercell composite
- -2.0
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 Apr 7, 1:40 PM CDT, 1 hour 54 minutes earlier.
Area forecast discussion, Apr 7, 1:40 PM CDT, 1 hour 54 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
140 PM CDT MON APR 7 2003
PRETTY BUSY AFTERNOON HERE IN SOUTHEAST TEXAS. SCATTERED SEVERE
THUNDERSTORMS HAVE DEVELOPED ACROSS THE SOUTHERN COUNTIES IN
SOUTHEAST TEXAS. THESE STORMS HAVE PRODUCED LOTS OF HAIL...SOME TO
THE SIZE OF HALF DOLLARS. THE ZONES HAVE BEEN UPDATED TO INCLUDE THE
NEW SEVERE THUNDERSTORM WATCH. THIS ACTIVITY SHOULD CONTINUE TO
DEVELOP AND LIFT SLOWLY NORTHWARD AHEAD OF THE APPROACHING COLD
FRONT. EXPECT ANOTHER ROUND OF STORMS AS THE FRONT CROSS THE AREA
LATER TONIGHT INTO TOMORROW MORNING. THE FRONT SHOULD CLEAR THE
COAST SOMETIME DURING THE MID TO LATE AFTERNOON HOURS. WINDS WILL
TURN TO THE NORTH AND INCREASE...LIKELY REACHING ADVISORY CONDITIONS
DURING THE AFTERNOON. WILL WAIT FOR NOW ON THE ADVISORY AND LET THE
EVENING AND MID SHIFTS EVALUATE THE SITUATION.
AFTER THE FRONT PASSES...SKIES WILL CLEAR. A COUPLE OF COOL NIGHTS
ARE IN STORE TUESDAY AND WEDNESDAY NIGHTS. A FAIRLY RAPID WARM UP
SHOULD THEN COMMENCE. WE SHOULD SEE READINGS NEAR 80 BY THE END OF
THE WORK WEEK. THE NEXT CHANCE FOR RAIN APPEARS TO BE LATE SUNDAY OR
EARLY MONDAY. 46/43
.HGX...SEVERE THUNDERSTORM WATCH #112 TIL 4 PM FOR
LIBERTY...CHAMBERS...AND GALVESTON COUNTIES.
SEVERE THUNDERSTORM WATCH #113 TIL 6 PM FOR
AUSTIN...BRAZORIA...COLORADO...FORT BEND...GRIMES...
HARRIS...JACKSON...MATAGORDA...MONTGOMERY...POLK...SAN
JACINTO...WALKER...WALLER...WASHINGTON COUNTIES
PRELIM NUMBERS...
CLL NV 053/064 036/066 037 820
IAH NV 055/064 038/067 037 930
GLS NV 059/066 045/064 049 930Hazardous weather outlook, Apr 7, 9:35 AM CDT, 5 hours 59 minutes before
GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-081200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 935 AM CDT MON APR 7 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS. ...SEVERE THUNDERSTORMS POSSIBLE LATE THIS AFTERNOON AND THIS EVENING OVER SOUTHEAST TEXAS... .DAY ONE...THIS AFTERNOON AND TONIGHT. A SLOW MOVING COLD FRONT WILL COMBINE WITH VERY MOIST AIR TO HELP DEVELOP SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND TONIGHT. THE COLD FRONT IS EXPECTED TO REACH THE COAST BETWEEN 3 AND 6 AM. ISOLATED THUNDERSTORMS ARE LIKELY THIS AFTERNOON...AND STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE LATER TONIGHT. IT APPEARS THE GREATEST THREAT WILL BE FROM HAIL AND STRONG WINDS IN CENTRAL AND SOUTHERN PARTS OF THE AREA. ISOLATED RAINFALL AMOUNTS OF AROUND 1 INCH MAY ACCOMPANY THE STORMS AS WELL. SPOTTER ACTIVATION MAY BE NEEDED LATER TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. BREEZY TO WINDY CONDITIONS EXPECTED TUESDAY AND WEDNESDAY. WIND ADVISORIES MAY BE NEEDED. NORTH WINDS BEHIND THE COLD FRONT WILL STRENGTHEN QUICKLY TUESDAY MORNING. SUSTAINED WINDS OF 25 MPH WITH HIGHER GUSTS ARE LIKELY THROUGH WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
In the hours before
Special weather statement, Apr 7, 10:12 AM CDT, 5 hours 22 minutes before
TXZ200-213-214-238-072100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1012 AM CDT MON APR 7 2003 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 4 PM FOR LIBERTY... CHAMBERS...HARRIS...AND GALVESTON COUNTIES... STRONG TO SEVERE THUNDERSTORMS HAVE DEVELOPED ALONG COASTAL SECTIONS OF THE UPPER TEXAS COAST THIS MORNING. THE ATMOSPHERE ACROSS THE REGION IS MOIST AND VERY UNSTABLE. THIS HAS ALLOWED THE STORMS TO RAPIDLY STRENGTHEN. SOME OF THESE STORMS WILL HAVE THE POTENTIAL TO PRODUCE LARGE HAIL...IN EXCESS OF THREE QUARTERS OF AN INCH...AND DAMAGING WINDS OF 58 MPH OR GREATER. ONCE AGAIN...COUNTIES INCLUDED IN THIS WATCH ARE HARRIS... GALVESTON...LIBERTY...AND CHAMBERS. PERSONS IN OR NEAR THESE COUNTIES SHOULD KEEP A LOOK OUT FOR RAPIDLY CHANGING WEATHER CONDITIONS THIS AFTERNOON. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.
Special weather statement, Apr 7, 1:17 PM CDT, 2 hours 17 minutes before
TXZ178-179-197>199-210>213-226-227-235>237-072300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 117 PM CDT MON APR 7 2003 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 6 PM FOR MUCH OF SOUTHEAST TEXAS... AN AXIS OF INSTABILITY WHICH LIES ALONG COASTAL SECTIONS OF SOUTHEAST TEXAS AND THEN WESTWARD TOWARD DEL RIO WILL BE THE FOCUS FOR ADDITIONAL THUNDERSTORM ACTIVITY THIS AFTERNOON AND EVENING. THE PRIMARY SEVERE WEATHER THREAT IS LARGE HAIL. THE COUNTIES INCLUDED IN THIS SEVERE THUNDERSTORM WATCH ARE: AUSTIN...BRAZORIA...COLORADO...FORT BEND...GRIMES...HARRIS... JACKSON...MATAGORDA...MONTGOMERY...POLK...SAN JACINTO...WALLER... WASHINGTON AND WHARTON. PERSONS IN OR NEAR THESE COUNTIES SHOULD KEEP A LOOK OUT FOR RAPIDLY CHANGING WEATHER CONDITIONS THIS AFTERNOON. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.
Special weather statement, Apr 7, 1:26 PM CDT, 2 hours 8 minutes before
TXZ178-179-197>199-210>213-226-227-235>237-072300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 126 PM CDT MON APR 7 2003 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 6 PM FOR MUCH OF SOUTHEAST TEXAS... AN AXIS OF INSTABILITY WHICH LIES ALONG COASTAL SECTIONS OF SOUTHEAST TEXAS AND THEN WESTWARD TOWARD DEL RIO WILL BE THE FOCUS FOR ADDITIONAL THUNDERSTORM ACTIVITY THIS AFTERNOON AND EVENING. THE PRIMARY SEVERE WEATHER THREAT IS LARGE HAIL. THE COUNTIES INCLUDED IN THIS SEVERE THUNDERSTORM WATCH ARE: AUSTIN...BRAZORIA...COLORADO...FORT BEND...GRIMES...HARRIS... JACKSON...MATAGORDA...MONTGOMERY...POLK...SAN JACINTO...WALLER... WASHINGTON AND WHARTON. PERSONS IN OR NEAR THESE COUNTIES SHOULD KEEP A LOOK OUT FOR RAPIDLY CHANGING WEATHER CONDITIONS THIS AFTERNOON. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO WARNING.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 9:24 AM CDT | Special Marine Warning | HGX | 66 min | |
| Apr 7, 9:48 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Galveston | 57 min |
| Apr 7, 9:49 AM CDT | Special Marine Warning | HGX | 56 min | |
| Apr 7, 10:49 AM CDT | Severe Thunderstorm Warning | HGX | Galveston, Harris | 41 min |
| Apr 7, 10:55 AM CDT | Special Marine Warning | HGX | 65 min | |
| Apr 7, 10:58 AM CDT | Special Marine Warning | HGX | 62 min | |
| Apr 7, 11:02 AM CDT | Severe Thunderstorm Warning | HGX | Chambers | 43 min |
| Apr 7, 11:54 AM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Harris | 36 min |
| Apr 7, 12:32 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Harris | 43 min |
| Apr 7, 1:16 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 44 min |
| Apr 7, 1:46 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Fort Bend, Wharton | 44 min |
| Apr 7, 2:31 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Harris | 59 min |
| Apr 7, 4:43 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 32 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.