Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 28, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 8, 2002, 12:25 AM CDT for San Jacinto County, Texas. It was in force for 35 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
- Apr 8, 2002, 12:25 AM CDT (05:25 UTC)
- Expired
- Apr 8, 2002, 1:00 AM CDT
- In force
- 35 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
County San Jacinto County, TX
The radar
The Houston radar (KHGX), 130 km from the middle of the area, began a volume at 05:25 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 |
|---|---|---|---|
| Apr 7, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 00:00Z, 5.4 hours before the alert went out and 202 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
- 645 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KHGX 080525 SVRHOU TXC407-080630- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1225 AM CDT MON APR 8 2002 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SAN JACINTO COUNTY IN SOUTHEAST TEXAS * UNTIL 100 AM CDT * AT 1215 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHEAST OF HUNTSVILLE...MOVING EAST AT 30 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... POINT BLANK COLDSPRING LAKE LIVINGSTON LAW ENFORCEMENT REPORTED A TREE DOWN FROM STRONG WINDS NORTH OF HUNSTVILLE. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. STAY AWAY FROM WINDOWS STRONG WINDS MAY KNOCK DOWN TREES AND POWER LINES OR DAMAGE BUILDINGS. TAKE COVER NOW 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 3072 9532 3045 9526 3052 9495 3077 9527
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, 11:40 PM CDT, 45 minutes earlier.
Area forecast discussion, Apr 7, 11:40 PM CDT, 45 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1140 PM CDT SUN APR 7 2002
UPDATED ZFPHGX TO REFLECT LATEST SEVERE WEATHER WATCH CONFIGURATION.
OTHERWISE...THE REST OF PREVIOUS FORECAST PACKAGE ON TRACK.
47/42/BT
.HGX....SEVERE THUNDERSTORM WATCH TIL 1 AM CDT FOR
AUSTIN...BRAZOS...BURLESON...COLORADO...MADISON
AND WASHINGTON COUNTIES.
SEVERE THUNDERSTORM WATCH TIL 300 AM CDT FOR...
BRAZORIA CHAMBERS FORT BEND GALVESTON
GRIMES HARRIS HOUSTON JACKSON
LIBERTY MATAGORDA MONTGOMERY POLK
SAN JACINTO TRINITY WALKER WALLER
WHARTON
FLASH FLOOD WATCH SE TX NORTH OF I-10 TONIGHT
SCA GALVESTON AND MATAGORDA BAYS.
SCA 00 TO 60 NM HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL.
CLL TB 066/082 059/082 055 950
IAH TB 067/081 066/082 059 871
GLS TB 069/078 071/075 068 671In the hours before
Special weather statement, Apr 7, 7:52 PM CDT, 4 hours 33 minutes before
TXZ176-195>197-210-211-080600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 752 PM CDT SUN APR 7 2002 ...SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THE WESTERN PORTIONS OF SOUTHEAST TEXAS UNTIL 100 AM CDT... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE EXTREME WESTERN PORTION OF SOUTHEAST TEXAS UNTIL 100 AM CDT. THIS WATCH IS IN EFFECT FOR THE FOLLOWING SOUTHEAST TEXAS COUNTIES... MADISON...BRAZOS...BURLESON...WASHINGTON...AUSTIN...COLORADO A SQUALL LINE EXTENDING ACROSS NORTH CENTRAL TEXAS AND THE HILL COUNTRY WILL CONTINUE TO MOVE TO THE EAST TOWARD SOUTHEAST TEXAS THIS EVENING. THIS LINE OF STORMS IS EXPECTED TO APPROACH THE WESTERN PORTION OF SOUTHEAST TEXAS SHORTLY AFTER 1000 PM. THE MAIN THREAT WITH THIS LINE OF STORMS WILL BE STRONG DAMAGING WINDS AND LARGE HAIL. ISOLATED TORNADOES WILL ALSO BE POSSIBLE MAINLY ALONG THE LEADING EDGE OF THE SQUALL LINE. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE POSSIBLE IN AND NEAR THE WATCH AREA. RESIDENTS ACROSS ALL OF SOUTHEAST TEXAS ARE STRONGLY URGED TO KEEP ABREAST ON THIS SEVERE WEATHER THREAT THIS EVENING AND DURING THE OVERNIGHT HOURS. LOCATIONS FURTHER TO THE EAST MAY BE PLACED UNDER SEVERE THUNDERSTORM OR TORNADO WATCHES AROUND OR SHORTLY AFTER MIDNIGHT TONIGHT. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA FOR ADDITIONAL UPDATES ON THIS SEVERE WEATHER THREAT.
Special weather statement, Apr 7, 11:15 PM CDT, 1 hour 10 minutes before
TXZ163-164-177>179-198>200-212>214-226-227-235>238-080800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1115 PM CDT SUN APR 7 2002 ...SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THE CENTRAL AND EASTERN PORTIONS OF SOUTHEAST TEXAS UNTIL 300 AM CDT... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE CENTRAL AND EASTERN PORTIONS OF SOUTHEAST TEXAS UNTIL 300 AM CDT. THIS WATCH IS IN EFFECT FOR THE FOLLOWING SOUTHEAST TEXAS COUNTIES... HOUSTON...TRINITY...POLK...GRIMES...WALKER...SAN JACINTO... MONTGOMERY...LIBERTY...WALLER...HARRIS...CHAMBERS...WHARTON...FORT BEND...BRAZORIA...GALVESTON...JACKSON... AND MATAGORDA. A SEVERE THUNDERSTORM WATCH IS STILL IN EFFECT FOR MADISON...BRAZOS... BURLESON...WASHINGTON...AUSTIN...AND COLORADO COUNTIES UNTIL 100 AM CDT. A MAIN SEVERE WEATHER THREAT WITH THIS SQUALL LINE WILL BE STRONG DAMAGING WINDS AND LARGE HAIL AS IT MOVES THROUGH SOUTHEAST TEXAS. ISOLATED TORNADOES WILL ALSO BE POSSIBLE MAINLY ALONG THE LEADING EDGE OF THE SQUALL LINE. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE POSSIBLE IN AND NEAR THE WATCH AREA. RESIDENTS ACROSS ALL OF SOUTHEAST TEXAS ARE STRONGLY URGED TO KEEP ABREAST ON THIS SEVERE WEATHER THREAT DURING THE OVERNIGHT HOURS. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA FOR ADDITIONAL UPDATES ON THIS SEVERE WEATHER THREAT.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 10:36 PM CDT | Severe Thunderstorm Warning | HGX | Colorado | 54 min |
| Apr 7, 10:43 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson | 62 min |
| Apr 7, 11:16 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Washington | 59 min |
| Apr 7, 11:33 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Waller | 57 min |
| Apr 8, 12:06 AM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 54 min |
| Apr 8, 12:31 AM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Harris | 59 min |
| Apr 8, 1:04 AM CDT | Severe Thunderstorm Warning | HGX | Liberty | 56 min |
| Apr 8, 1:35 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 55 min |
| Apr 8, 1:42 AM CDT | Tornado Warning | HGX | Brazoria, Galveston | 48 min |
| Apr 8, 1:55 AM CDT | Special Marine Warning | HGX | 110 min | |
| Apr 8, 6:16 AM CDT | Special Marine Warning | HGX | 74 min | |
| Apr 8, 6:23 AM CDT | Severe Thunderstorm Warning | HGX | Jackson, Matagorda | 37 min |
| Apr 8, 6:57 AM CDT | Special Marine Warning | HGX | 93 min | |
| Apr 8, 7:00 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Matagorda | 45 min |
| Apr 8, 7:45 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston | 30 min |
| Apr 8, 7:47 AM CDT | Special Marine Warning | HGX | 58 min | |
| Apr 8, 8:13 AM CDT | Flash Flood Warning | HGX | Brazoria, Galveston, Harris | 2 hr |
| Apr 8, 8:17 AM CDT | Severe Thunderstorm Warning | HGX | Galveston | 28 min |
| Apr 8, 8:22 AM CDT | Special Marine Warning | HGX | 83 min | |
| Apr 8, 8:56 AM CDT | Special Marine Warning | HGX | 94 min | |
| Apr 8, 10:29 AM CDT | Special Marine Warning | HGX | 46 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002
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.