Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 121, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jul 30, 2000, 4:39 PM CDT for Colorado County, Texas. It was in force for 51 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 30, 2000, 4:39 PM CDT (21:39 UTC)
- Expired
- Jul 30, 2000, 5:30 PM CDT
- In force
- 51 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Colorado County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 9.7 hours before the alert went out and 221 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
- 2822 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 581 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -58 m²/s²
- 0-3 km storm-relative helicity
- 5 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 302140 SVRHOU TXC089-302230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 439 PM CDT SUN JUL 30 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... COLORADO COUNTY IN SOUTHEAST TEXAS * UNTIL 530 PM CDT * AT 431 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 16 MILES WEST OF EAGLE LAKE...MOVING EAST-SOUTHEAST AT 5 TO 10 MPH. * LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE... EAGLE LAKE ALTAIR MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. STAY AWAY FROM WINDOWS! LARGE HAIL IS LIKELY WITH THIS STORM. DAMAGING WINDS ARE POSSIBLE. 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 2969 9665 2952 9670 2939 9636 2963 9628
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 30, 2:30 PM CDT, 2 hours 9 minutes earlier.
Area forecast discussion, Jul 30, 2:30 PM CDT, 2 hours 9 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 230 PM CDT SUN JUL 30 2000 CONVECTION ONGOING OVER THE SRN 2/3 OF THE CWA EARLY THIS AFTERNOON. THE MAIN FORECAST ISSUE IS CONVECTION...WHICH WILL BE AFFECTED BY THE LOCATION OF BOUNDARIES...OCCASIONAL UPPER LEVEL SUPPORT...AND DECREASING PRECIP WATER TREND. THE SHORT TERM MODELS ARE IN GOOD AGREEMENT SYNOPTICALLY EXCEPT FOR THE CENTRAL GULF SYSTEM THE AVN/MRF GENERATE BY MIDWEEK. AGREE WITH NHC/HPC GUIDANCE THAT TROPICAL DEVELOPMENT IS UNLIKELY. PREFER THE ETA FOR MOST ELEMENTS...WITH TEMPS SOMETHING NEAR AN FWC/FAN AVERAGE..THE MAV GUIDANCE LOOKING TOO WARM. OVERALL...THE MAIN FRONTAL BOUNDARY WILL SAG SOUTH...STALL...AND WEAKEN OVER SERN TX. CONVECTIVE OUTFLOW BOUNDARIES AND THE SEABREEZE WILL PROVIDE EXTRA FOCI. AN UPPER LEVEL SHORTWAVE WILL AID CONVECTION ON TUE...AND PRECIP WATER WILL DECREASE ABOUT 1/4 INCH EACH DAY FROM NEARLY 2 INCHES TODAY TO 1.75 MON...AND 1.5 TUE. WINDS ARE AND FORECAST TO BE WEAK AT ALMOST EVERY LEVEL...INDICATING NO MAJOR SEVERE THREAT...BUT SLOW MOVING STORMS...ECHO TRAINING... AND THUS THE THREAT OF HEAVY RAIN. SO MUCH WILL DEPEND ON THE MESOSCALE THAT SPECIFICS WILL BE DIFFICULT...ESPECIALLY BEYOND THE FIRST TWO PERIODS. SUFFICE TO SAY POPS WILL BE LOWER IN THE NORTH...HIGHEST ALONG THE COAST...A BIT HIGHER TUE THAN MON...AND SCT COVERAGE IN THE EXTENDED PERIOD. WILL ISSUE AN HAZARDOUS WEATHER OUTLOOK FOR HEAVY RAIN...ALTHOUGH MOST LOCATIONS WILL SIMPLY BENEFIT FROM SOAKING RAINS. .HGX...NONE. 31/38 PRELIMS... CLL BB 070/094 071/094 071 2324 IAH EE 072/092 072/093 072 5434 GLS TT 080/088 078/089 079 7535
In the hours before
Special weather statement, Jul 30, 3:45 PM CDT, 54 minutes before
TXZ163-164-176>179-195>200-210>214-226-227-235>238-310930- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 345 PM CDT SUN JUL 30 2000 ...HEAVY RAIN THREAT ACROSS SOUTHEAST TEXAS MONDAY AND TUESDAY... A WEAK FRONT WILL STALL OVER SOUTHEAST TEXAS TONIGHT...THEN REMAIN STATIONARY THROUGH TUESDAY. MOIST GULF AIR AND WEAK UPPER LEVEL DISTURBANCES WILL COMBINE WITH THE FRONT TO PRODUCE ROUNDS OF SHOWERS AND THUNDERSTORMS...ESPECIALLY FROM THE AFTERNOON THROUGH EARLY EVENING HOURS MONDAY AND TUESDAY. STEERING WINDS ARE WEAK...INDICATING STORMS WILL MOVE SLOWLY. IN ADDITION...THE STATIONARY FRONT AND WEAK OUTFLOWS WILL GUIDE STORMS OVER THE SAME AREAS...BRINGING THE THREAT OF HEAVY RAIN. RAINFALL AMOUNTS COULD AVERAGE 1/2 TO 1 AND 1/2 INCHES PER DAY...WITH ISOLATED TOTALS UP TO 5 INCHES POSSIBLE AT SOME SPOTS FOR BOTH DAYS. STAY TUNED TO NOAA WEATHER RADIO OR OTHER RELIABLE WEATHER NEWS SOUfRCES FOR THE LATEST FORECASTS AND UPDATES. 31
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 6:03 PM CDT | Severe Thunderstorm Warning | HGX | Polk | 42 min |
| Jul 30, 6:42 PM CDT | Severe Thunderstorm Warning | HGX | Polk, Trinity | 48 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.