Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 1, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Feb 18, 2000, 1:59 PM CST for Houston County, Texas. It was in force for 46 min. 1 report 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
- Feb 18, 2000, 1:59 PM CST (19:59 UTC)
- Expired
- Feb 18, 2000, 2:45 PM CST
- In force
- 46 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Houston County, TX
The radar
The Shreveport radar (KSHV), 187 km from the middle of the area, began a volume at 20:02 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 18, 2:12 PM CST | Hail 0.88 | Grapeland, TX |
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
Shreveport, LA (KSHV), launched 12:00Z, 8.0 hours before the alert went out and 196 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
- 110 J/kg
- Mixed-layer CIN
- -329 J/kg
- Mixed-layer LCL
- 830 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 365 m²/s²
- 0-3 km storm-relative helicity
- 401 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KHGX 182001 SVRHOU TXC225-182045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 159 PM CST FRI FEB 18 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HOUSTON COUNTY IN SOUTHEAST TEXAS * UNTIL 245 PM CST * AT 154 PM CST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 9 MILES WEST OF GRAPELAND...MOVING EAST AT 25 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... GRAPELAND...LATEXO WECHES MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. LARGE HAIL TO AN INCH IN DIAMETER IS LIKELY WITH THIS STORM. 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 3157 9571 3139 9571 3135 9511 3160 9511
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 Feb 18, 9:25 AM CST, 4 hours 34 minutes earlier.
Area forecast discussion, Feb 18, 9:25 AM CST, 4 hours 34 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 925 AM CST FRI FEB 18 2000 CDFNT S OF A DFW-SJT LN. SHD MAKE SOME SLOW PROGRESS TDA. WSHFT SHD REACH HOU THIS EVENING...AND COAST LATE TNGT. STRONGER CAP AND HIER PW NOTED AT LCH VERSUS CRP. LOWER POPS SW LOOKS GOOD. WE SHD HAVE ENOUGH HEATING TO DESTABILIZE AND MOISTURE IN THE E IS ENOUGH TO GENERATE CONVECTION. FNTL BOUNDARY ENTERING N PTNS LATE IN THE DAY SHD PROVIDE ENOUGH LIFT. CAP WILL ONCE AGAIN BE THE BIGGEST HURDLE TO OVERCOME. NO CHG TO CURR POPS. WILL MAKE SOME ADJUSTMENT TO SKY COVER. GETTING LOTS OF BRKS COAST...THINK THIS WILL CONT. CURR PKG SEEMS TO HAVE TEMPS COVERED WELL. ONLY MINOR ADJUSTMENTS TO CWF. .HGX...NONE. 46/38/35 PRELIMS... CLL EU 080/045 062/043 063 410 IAH EU 082/052 066/046 066 330 GLS EU 078/056 064/052 064 230 SW ZONES 220
In the hours before
Special weather statement, Feb 18, 12:46 PM CST, 1 hour 13 minutes before
TXZ163-164-176-177-195>198-182100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1246 PM CST FRI FEB 18 2000 ...THUNDERSTORMS TO AFFECT THE AREA THROUGH MID AFTERNOON... SHOWERS AND THUNDERSTORMS WILL AFFECT PORTIONS OF SOUTHEAST TEXAS NORTH OF A LINE FROM LIVINGSTON TO BRENHAM BETWEEN 115 PM AND 330 PM. THIS INCLUDES SPOTS SUCH AS COLLEGE STATION...CROCKETT... HUNTSVILLE...MADISONVILLE...ANDERSON...CALDWELL AND GROVETON. THE THUNDERSTORMS WILL PRODUCE BRIEF HEAVY RAINS. HAIL IS ALSO A POSSIBILITY. THE THUNDERSTORMS ARE FORMING ALONG A SHARP COLD FRONT. AS THE STORMS PASS...WINDS WILL SHIFT TO THE NORTH AND TEMPERATURES WILL BEGIN TO FALL.J THE MERCURY WILL FALL INTO THE 40S TONIGHT AND WILL ONLY RISE INTO THE LOW AND MID 60S TOMORROW. END/46
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; radar from the NEXRAD Level II archive.