Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 75, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 4, 2000, 2:08 PM CDT for Grimes County, Texas. It was in force for 52 min. 2 reports came from 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, with what was reported inside it.
The facts
- Issued
- May 4, 2000, 2:08 PM CDT (19:08 UTC)
- Expired
- May 4, 2000, 3:00 PM CDT
- In force
- 52 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Grimes County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 4, 3:00 PM CDT | Hail 0.75 | Shiro, TX | |
| May 4, 3:10 PM CDT | Hail 1 | Navasota, TX | Quarter sized hail along SH 6. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 7.1 hours before the alert went out and 269 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.
570
WUUS54 KHGX 041908
SVRHOU
TXC185-042000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
208 PM CDT THU MAY 4 2000
THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
GRIMES COUNTY IN SOUTHEAST TEXAS
* UNTIL 300 PM CDT
* AT 206 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
FROM NEAR NAVASOTA TO 2 MILES SOUTHWEST OF ANDERSON MOVING NORTHEAST AT
20 MPH.
* LOCATIONS IN THE PATH OF THIS LINE INCLUDE...
ANDERSON
RICHARDS
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 3048 9605 3033 9611 3039 9582 3067 9584
3061 9597What 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, 9:45 AM CDT, 4 hours 23 minutes earlier.
Area forecast discussion, May 4, 9:45 AM CDT, 4 hours 23 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 945 AM CDT THU MAY 4 2000 SHORT UPDATE DUE TO IMPENDING HEAVY WEATHER. WILL ISSUE FLASH FLOOD WATCH FOR LOCATIONS ALONG/NORTH OF I-10. MANY OF THE CLASSIC FACTORS ARE IN PLACE SUCH AS WEAK MID LEVEL FLOW...STATIONARY BOUNDARY... AMPLE MOIST AIR...AND ALREADY SATURATED GROUND. IN ADDITION...THE SEA BREEZE APPEARS TO BE ACTIVE AGAIN TODAY OVER THE SRN ZONES...IT COULD COLLIDE WITH OUTFLOW FROM THE LINE OF STORMS TO THE NORTH AND REALLY SQUEEZE OUT SOME HEAVY AMOUNTS IN METRO HOUSTON. WILL ALSO MAKE CHANGES TO TEMPS/WINDS/CLOUDS REFLECTING EXPECTED CONVECTIVE COVERAGE (E.G. COOLER WHERE IT IS LIKELY TO RAIN ALL DAY). .KHGX...FLASH FLOOD WATCH ALONG/NORTH OF I-10. 31/47 UPDATED PRELIMS... CLL TE 080/068 087/068 087 +34 IAH TE 085/070 087/070 087 733 GLS EB 081/072 081/072 081 422
In the hours before
Special weather statement, May 4, 11:35 AM CDT, 2 hours 33 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>237-050000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1135 AM CDT THU MAY 4 2000 ...MODERATE RISK OF SEVERE THUNDERSTORMS AND HEAVY RAIN THIS AFTERNOON AND EARLY EVENING ACROSS SOUTHEAST TEXAS... ...FLASH FLOOD WATCH IN EFFECT ALONG AND NORTH OF A BRENHAM... CONROE...LIVINGSTON LINE THROUGH 7 PM... THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS AND HEAVY RAIN ACROSS SOUTHEAST TEXAS THIS AFTERNOON AND EARLY EVENING. THE PRIMARY SEVERE WEATHER RISKS ARE LARGE HAIL AND DAMAGING WIND. THE PRIMARY THREAT TIME IS FROM NOON THROUGH 7 PM. HEAVY RAIN IS MOST LIKELY ALONG AND NORTH OF STATE HIGHWAY 105. A SLOW MOVING UPPER LEVEL SYSTEM...STATIONARY FRONT...AND MOIST GULF AIR WILL COMBINE TO PRODUCE SHOWERS AND THUNDERSTORMS ACROSS SOUTHEAST TEXAS TODAY. WIND SHEAR IS SUFFICIENT FOR SOME OF THE STORMS TO BECOME SEVERE AND PRODUCE LARGE HAIL OR DAMAGING WINDS. MID-LEVEL WINDS APPEAR TO FAVOR STORMS THAT MOVE SLOWLY AND OVER THE SAME LOCATIONS...WHICH WILL RESULT IN HEAVY RAIN. EXPECT AVERAGE RAINFALL TOTALS OF 1 TO 2 INCHES NORTH OF STATE HIGHWAY 105...WITH SOME LOCATIONS RECEIVING UP TO 4 INCHES OF RAIN BY EARLY EVENING. EXPECT AVERAGE RAINFALL AMOUNTS OF 1/2 TO 1 INCH FOR METRO HOUSTON... WITH SOME SPOTS RECEIVING UP TO 2 INCHES OF RAIN. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA TODAY FOR THE LATEST FORECASTS...UPDATES...AND POSSIBLE WATCHES OR WARNINGS. 31/JWZ
Special weather statement, May 4, 1:50 PM CDT, 18 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, 2:24 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, 6:15 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 45 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.