Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 113, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jul 23, 2000, 4:25 PM CDT for Chambers County, Galveston County, Texas. It was in force for 50 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
- Jul 23, 2000, 4:25 PM CDT (21:25 UTC)
- Expired
- Jul 23, 2000, 5:15 PM CDT
- In force
- 50 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Chambers County, TX, Galveston County, TX
The radar
The Houston radar (KHGX), 77 km from the middle of the area, began a volume at 21:25 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, 9.4 hours before the alert went out and 127 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
- 2253 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 813 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KHGX 232130 SVRHOU TXC071-167-232215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 425 PM CDT SUN JUL 23 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... GALVESTON COUNTY IN SOUTHEAST TEXAS CHAMBERS COUNTY IN SOUTHEAST TEXAS * UNTIL 515 PM CDT * AT 415 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS OVER CHAMBERS COUNTY AND NORTHERN GALVESTON BAY. MOVEMENT WAS SOUTH AT 20 MPH. THE STRONGEST STORMS WERE JUST NORTHEAST OF HIGH ISLAND AND EAST OF ANAHUAC. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... BOLIVAR PENINSULA SOUTHERN CHAMBERS COUNTY KEMAH...LEAGUE CITY...DICKINSON MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. STAY AWAY FROM WINDOWS! WIND DAMAGE WAS REPORTED WITH THESE STORMS OVER NORTHERN CHAMBERS COUNTY. LARGE HAIL CAN BE EXPECTED AS WELL. 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 2973 9439 2963 9456 2906 9415 2921 9392
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 Jul 23, 2:15 PM CDT, 2 hours 10 minutes earlier.
Area forecast discussion, Jul 23, 2:15 PM CDT, 2 hours 10 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 215 PM CDT SUN JUL 23 2000 TSRA CONT TO FIRE OVER NORTH AND CENTRAL ZONES THIS AFTERNOON AND THIS TREND IS LIKELY CONTINUE TONIGHT. A WEAK COOL FRONT LIES ACROSS SE TX AND THIS BOUNDARY WILL DRIFT SLOWLY SOUTH TONIGHT. ALTHO THE MDLS PUSH THIS FRONT SOUTH OF THE FA...FEEL IT WILL HANG UP ALONG THE COAST AND SW ZONES...AND THE WESTERN EDGE OF THE DISSIPATING FRONT MAY ACTUALLY PIVOT NORTH ON MONDAY IN RESPONSE TO A DEVELOPING SOUTHERLY FLOW. MAIN ISSUE IS SEVERE THREAT TONIGHT. 25H AND 30H FIELDS SHOW UPPER WIND FIELD TO REMAIN DIVERGENT THROUGH 48 HRS. SE TX LIES IN A LFQ WHICH WILL FURTHER ENHANCE LIFT INTO TONIGHT. COUPLE THAT WITH CAPE VALUES NEAR 5000 J/KG AND LI'S OF -6 TO -10 AND SEVERE THREAT TO REMAIN HIGH. WIND SHEAR IS RELATIVELY WEAK WHICH WILL LIKELY LIMIT WIDESPREAD ORGANIZED SEVERE THREAT. POTENTIAL FOR WIND DAMAGE AND LARGE HAIL TO PERSIST INTO TONIGHT. FEEL THIS IS NOT JUST AN EVENING EVENT AND COULD LAST TOWARD MIDNIGHT. WILL ISSUE AN SPS DETAILING SEVERE THREAT BY 4 PM. MONDAY...FRONT LINGERS IN THE AREA AND WEAKENS WITH TIME. ETA (MDL DU JOUR) KEEPS ENOUGH MSTR IN PLACE AND WITH DIVERGENT UPPER LEVEL WIND PATTERN...ANOTHER SPEED MAX AND DAYTIME HEATING...FEEL ADDITIONAL TSRA POSSIBLE ESPECIALLY ALONG RESIDUAL CONVERGENT SFC BNDRY. STILL FEEL THERE IS A SLT CHANCE OF TSRA ON TUESDAY AS UPPER LEVEL WINDS REMAIN DIVERGENT...HOWEVER MSTR LEVELS DROP OVER THE EAST AND SFC CONVERGENCE WEAKENS MARKEDLY. EXTENDED...UKMET/ECMWF ARE NOT AS AGGRESSIVE AS THE MRF WITH THE CUT OFF LOW OVER THE WESTERN GULF FOR THE END OF THE LWEEK. CURRENT FORECAST HAS SLT CHC...SO WILL KEEP THINGS AS THEY ARE. .HGX...NONE. 43/46 PRELIMS... CLL BB 070/096 069/096 070 322 IAH BB 071/095 070/096 071 632 GLS BB 077/090 078/090 079 532
In the hours before
Special weather statement, Jul 23, 3:00 PM CDT, 1 hour 25 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>238-240800- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 300 PM CDT SUN JUL 23 2000 ...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER SOUTHEAST TEXAS THROUGH THIS EVENING... THUNDERSTORMS ARE EXPECTED TO AFFECT SOUTHEAST TEXAS THROUGH THIS EVENING. SOME OF THE STORMS COULD PRODUCE HAIL 3/4 INCH DIAMETER OR LARGER...AND BRIEF DAMAGING WIND GUSTS. THE AREA AT RISK IS SOUTH OF A LINE FROM BRYAN/COLLEGE STATION TO ONALASKA. THIS INCLUDES THE HOUSTON/GALVESTON METRO AREA. A WEAK COOL FRONT IS DRIFTING SLOWLY SOUTH ACROSS SOUTHEAST TEXAS. THE AIRMASS SOUTH OF THE FRONT IS VERY WARM AND MOIST...MAKING THE ATMOSPHERE UNSTABLE. THE LEVEL OF INSTABILITY MAY BE SUFFICIENT TO CAUSE SOME OF THE STORMS TO BE SEVERE. MOVE INDOORS IF YOU ARE IN THE PATH OF A STORM. LIGHTNING IS A POTENTIAL KILLER IN ANY THUNDERSTORM. BE ALERT THIS EVENING FOR THE POSSIBILITY OF ISOLATED LARGE HAIL AND WIND DAMAGE...SUCH AS DOWNED TREES AND POWERLINES. ELECTRICITY MAY BE INTERRUPTED IN SPOTS. IF YOU ARE BOATING ON ANY OF THE AREA LAKES THIS AFTERNOON...MOVE QUICKLY TO SHORE IF THUNDERSTORMS DEVELOP NEARBY. A QUICK INCREASE IN WINDS AND WAVES COULD BE ENOUGH TO OVERTURN YOUR CRAFT. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA FOR ADDITIONAL UPDATES AND THE LATEST FORECASTS AND STATEMENTS FROM THE NATIONAL WEATHER SERVICE. $$
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 2:47 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 43 min |
| Jul 23, 2:48 PM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 42 min |
| Jul 23, 3:23 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 52 min |
| Jul 23, 3:28 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 47 min |
| Jul 23, 3:45 PM CDT | Severe Thunderstorm Warning | HGX | Chambers | 45 min |
| Jul 23, 4:22 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Harris | 53 min |
| Jul 23, 5:14 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Galveston | 46 min |
| Jul 23, 5:17 PM CDT | Severe Thunderstorm Warning | HGX | Austin | 43 min |
| Jul 23, 6:02 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 43 min |
| Jul 23, 6:02 PM CDT | Severe Thunderstorm Warning | HGX | Austin, Colorado | 43 min |
| Jul 23, 6:25 PM CDT | Severe Thunderstorm Warning | HGX | Wharton | 65 min |
| Jul 23, 6:50 PM CDT | Severe Thunderstorm Warning | HGX | Jackson | 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.