Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 72, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 4, 2000, 1:08 PM CDT for Liberty County, Texas. It was in force for 37 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, 1:08 PM CDT (18:08 UTC)
- Expired
- May 4, 2000, 1:45 PM CDT
- In force
- 37 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Liberty County, TX
The radar
The Houston radar (KHGX), 103 km from the middle of the area, began a volume at 18:09 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 12:00Z, 6.1 hours before the alert went out and 163 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.
790 WUUS54 KHGX 041810 SVRHOU TXC291-041845- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 108 PM CDT THU MAY 4 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LIBERTY COUNTY IN SOUTHEAST TEXAS * UNTIL 145 PM CDT * AT 106 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTHEAST OF TARKINGTON PRAIRIE...MOVING EAST AT 15 MPH. * LOCATIONS IN THE PATH OF THE STORM INLCUDE... MOSS HILL 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 9495 3032 9505 3022 9468 3042 9472
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, 9:45 AM CDT, 3 hours 23 minutes earlier.
Area forecast discussion, May 4, 9:45 AM CDT, 3 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, 1 hour 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
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, 1:25 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, 6:15 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.