Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 59, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 23, 2000, 6:07 AM CDT for Liberty County, Texas. It was in force for 38 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
- Apr 23, 2000, 6:07 AM CDT (11:07 UTC)
- Expired
- Apr 23, 2000, 6:45 AM CDT
- In force
- 38 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), 96 km from the middle of the area, began a volume at 11:09 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 00:00Z, 11.1 hours before the alert went out and 149 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1571 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -54 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
558 WUUS54 KHGX 231108 SVRHOU TXC291-231145- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 607 AM CDT SUN APR 23 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LIBERTY COUNTY IN SOUTHEAST TEXAS * UNTIL 645 AM CDT * AT 600 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES NORTH OF DAYTON LAKES OR 6 MILES SOUTHWEST OF MOSS HILL...MOVING NORTHEAST AT 25 MPH. MAIN THREAT FROM THIS STORM WILL BE HAIL. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... 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 3024 9494 3011 9480 3037 9443 3047 9460
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 23, 2:30 AM CDT, 3 hours 37 minutes earlier.
Area forecast discussion, Apr 23, 2:30 AM CDT, 3 hours 37 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 230 AM CDT SUN APR 23 2000 UPPER LOW CURRENTLY OVER TX PANHANDLE CONTINUING TO PUSH EASTWARD WITH MODELS IN GOOD AGREEMENT ON ITS EVOLUTION. DRYLINE STILL OVER WEST TX AND HAS NOT MADE MUCH PROGRESS LAST FEW HOURS. STRONG CAP LIMITING CONVECTION SO FAR WITH 05Z SAT SOUNDING FROM CRP SHOWING 700 TEMP OF +15. MAIN QUESTION FOR TODAY IS CHANCE OF CONVECTION AS DRYLINE PUSHES THROUGH SE TX. DAYTIME HEATING AND CONVERGENCE ALONG DRYLINE WOULD BE MAIN FACTORS FOR ANY TSRA DEVELOPMENT. HOWEVER...BOTH ETA/MESOETA SHOW WEAK SHORTWAVE MOVING AROUND BASE OF UPPER TROF INTO SE TX LATER TODAY. ALSO MODELS AGREE ON SOME COOLING AT MID LEVELS TODAY AS UPPER SYSTEM MOVES ACROSS WHICH MAY HELP IN DECREASING CAP STRENGTH. THINK ETA HAS BEST HANDLE ON MOISTURE AND SLIGHTLY SLOWER MOVEMENT OF DRYLINE. 00Z ETA DEPICTS CAPES OF 2000-3000 AND LIS OF -6 TO -8 OVER ERN ZONES THIS AFTERNOON AND SPC HAS FAR NE ZONES IN SLIGHT RISK FOR TODAY. WILL PLACE 30 POPS FOR FAR NE ZONES WITH MENTION OF SVR...AND 20 POPS FOR CENTRAL ZONES FOR TODAY FOR ANYTHING THAT POPS ON DRYLINE. EXPECT CLEARING SKIES AND VERY WARM TEMPS FOR WRN ZONES. WEATHER LOOKS PRETTY MUCH BENIGN AFTER TODAY AS UPPER SYSTEM SHIFTS INTO SE US. COOL FRONT WILL CROSS SE TX LATE TONIGHT BUT NOT MUCH COOLING BEHIND IT. SHOULD SEE CLEAR TO PARTLY CLOUDY SKIES AND WIDE DIURNAL RANGE IN TEMPS FOR MON/TUE. WILL WAIT ON NEW MRF BEFORE CHANGING ANYTHING IN THE EXTENDED. 35/47/42 .KHGX...SCA ALL COASTAL WATERS AND BAYS. PRELIMS... CLL BU 089/058 085/057 083 100 (NE ZONE POPS 310) IAH BU 087/060 088/058 084 210 GLS BU 081/069 082/066 079 210
In the hours before
Special weather statement, Apr 23, 5:00 AM CDT, 1 hour 7 minutes before
TXZ163-164-177>179-232200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 500 AM CDT SUN APR 23 2000 ...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTHEAST PORTIONS OF SOUTHEAST TEXAS... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY FOR HOUSTON... POLK...TRINITY...SAN JACINTO...AND WALKER COUNTIES. THE CITIES OF COLDSPRING...CROCKETT...GROVETON...TRINITY...HUNTSVILLE... LIVINGSTON...AND CORRIGAN ARE INCLUDED IN THE SLIGHT RISK AREA. AN UPPER LEVEL DISTURBANCE WAS LOCATED OVER THE TEXAS PANHANDLE EARLY THIS MORNING...AND WILL MOVE INTO ARKANSAS BY TONIGHT. AT THE SAME TIME...A DRYLINE CURRENTLY OVER WEST TEXAS WILL MOVE EASTWARD INTO SOUTHEAST TEXAS THIS AFTERNOON. AHEAD OF THE DRYLINE...SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED. THE COMBINATION OF DAYTIME HEATING AND CONVERGENCE ALONG THE DRYLINE MAY ALLOW A FEW OF THESE STORMS TO BECOME SEVERE OVER THE SLIGHT RISK AREA...MAINLY THIS AFTERNOON. THE PRIMARY SEVERE WEATHER THREATS WILL BE LARGE HAIL AND DAMAGING WIND. STAY TUNED TO NOAA WEATHER RADIO OR OTHER RELIABLE WEATHER NEWS SOURCES FOR FURTHER UPDATES. 35
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.