Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 89, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 4, 2000, 6:15 PM CDT for Chambers County, Texas. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- May 4, 2000, 6:15 PM CDT (23:15 UTC)
- Expired
- May 4, 2000, 7:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Chambers County, TX
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 4, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.3 hours before the alert went out and 144 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
- 1094 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 606 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
108 WUUS54 KHGX 042315 SVRHOU TXC071-050000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 615 PM CDT THU MAY 4 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CHAMBERS COUNTY IN SOUTHEAST TEXAS * UNTIL 700 PM CDT * AT 613 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR ANAHUAC...MOVING EAST AT 20 MPH JUST SOUTH OF I-10. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... ANAHUAC WALLISVILLE HANKAMER MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. 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 2986 9486 2969 9479 2981 9437 2988 9439
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 4, 3:00 PM CDT, 3 hours 15 minutes earlier.
Area forecast discussion, May 4, 3:00 PM CDT, 3 hours 15 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 300 PM CDT THU MAY 4 2000 ONGOING SEVERE/FLASH FLOOD EVENT FORECAST TO CONTINUE INTO THE EARLY NIGHTTIME HOURS. LEADING EDGE OF STORMS PRODUCING THE SEVERE ARE LINED UP MAINLY EAST-WEST WITH STEERING WINDS PARALLEL. CONCERN IS THAT LINE MAY SLOW DOWN WITH MERGERS AND TRAINING A DISTINCT PROBABILITY. TIMING WILL BRING HEAVIEST RAIN ACROSS MOST OF HOUSTON METRO AREA DURING THE RUSH HOUR ONCE AGAIN. WIDESPREAD 1 TO 2 INCH RAINS WITH ISOLATED TOTALS ABOVE 5 INCHES CURRENTLY FORECAST. WILL REISSUE WATCH FOR MOST OF CWA ALONG AND SOUTH OF CLL- CONROE- LIBERTY LINE. AFTER TONIGHT...UPPER LOW WALLOWING ABOUT SOUTHERN PLAINS TO ARKANSAS FORECAST TO EVENTUALLY MOVE EAST AS NEXT TROF APPROACHES WEST US. IF MODELS RIGHT...UPPER SUPPORT NOT NEARLY AS FAVORABLE AFTER TONIGHT AND BECOMING CONFLUENT BY SATURDAY. TRACK RECORD OF MODELS ON THIS FEATURE HAS NOT BEEN OUTSTANDING. WILL LEAVE CHANCE THUNDERSTORMS THROUGH SATURDAY THEN LEAVE OUT SUN-TUE AS RIDGE BUILDING OUT OF MEXICO SHOULD STRENGTHEN CAP OVER US. BRISK ONSHORE FLOW TO CONTINUE THROUGH THE PERIOD WITH MARINE FORECAST CARRYING EXERCISE CAUTION. .KHGX...FLASH FLOOD WATCH NONE. 30 ET AL PRELIMS... CLL BB 065/087 068/087 068 6433 IAH BB 066/087 070/087 070 7433 GLS BB 072/081 072/081 072 7433
In the hours before
Special weather statement, May 4, 1:50 PM CDT, 4 hours 25 minutes before
GMZ335-355-TXZ177>179-198>200-212>214-227-237-238-050000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 150 PM CDT THU MAY 4 2000 ...SEVERE THUNDERSTORM WATCH UNTIL 7 PM THIS EVENING... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHEAST TEXAS UNTIL 7 PM THIS EVENING. COUNTIES IN THE SEVERE THUNDERSTORM WATCH INCLUDE... SAN JACINTO...WALKER...GALVESTON...WALLER...POLK...HARRIS... MONTGOMERY...GRIMES...BRAZORIA...LIBERTY...CHAMBERS...AND FORT BEND. MARINE AREAS INCLDUE GALVESTON BAY AND THE GULF COASTAL WATERS FROM HIGH ISLAND TO FREEPORT OUT 20 NAUTICAL MILES. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA TODAY FOR THE LATEST FORECASTS...UPDATES...AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 1:03 AM CDT | Severe Thunderstorm Warning | HGX | Houston | 42 min |
| May 4, 1:08 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 37 min |
| May 4, 1:25 PM CDT | Severe Thunderstorm Warning | HGX | San Jacinto | 65 min |
| May 4, 1:30 PM CDT | Flash Flood Warning | HGX | Liberty, Polk, San Jacinto | 5 hr |
| May 4, 1:38 PM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 52 min |
| May 4, 1:44 PM CDT | Tornado Warning | HGX | Liberty | 46 min |
| May 4, 2:08 PM CDT | Severe Thunderstorm Warning | HGX | Grimes | 52 min |
| May 4, 2:24 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Liberty | 51 min |
| May 4, 3:00 PM CDT | Severe Thunderstorm Warning | HGX | Grimes | 45 min |
| May 4, 3:15 PM CDT | Severe Thunderstorm Warning | HGX | Burleson, Washington | 60 min |
| May 4, 3:37 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 53 min |
| May 4, 3:50 PM CDT | Flash Flood Warning | HGX | Brazos, Grimes, Montgomery, Washington | 3 hr |
| May 4, 4:13 PM CDT | Severe Thunderstorm Warning | HGX | Washington | 62 min |
| May 4, 4:30 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 45 min |
| May 4, 4:30 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Waller | 60 min |
| May 4, 4:57 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 48 min |
| May 4, 5:12 PM CDT | Severe Thunderstorm Warning | HGX | Colorado | 63 min |
| May 4, 5:32 PM CDT | Severe Thunderstorm Warning | HGX | Austin | 43 min |
| May 4, 5:33 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Harris | 42 min |
| May 4, 5:36 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 24 min |
| May 4, 5:40 PM CDT | Severe Thunderstorm Warning | HGX | Waller | 50 min |
| May 4, 6:35 PM CDT | Severe Thunderstorm Warning | HGX | Colorado | 55 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2000Every severe thunderstorm warning in 2000
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.