Alert archive / Texas / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 156, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jul 27, 2000, 5:52 PM CDT for DeWitt County, Lavaca County, Texas. It was in force for 53 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
- Jul 27, 2000, 5:52 PM CDT (22:52 UTC)
- Expired
- Jul 27, 2000, 6:45 PM CDT
- In force
- 53 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties DeWitt County, TX, Lavaca County, TX
The radar
The Austin/San Antonio radar (KEWX), 93 km from the middle of the area, began a volume at 22:51 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 |
|---|---|---|---|
| Jul 27, 6:00 PM CDT | Hail 1 | Yoakum, 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
Corpus Christi, TX (KCRP), launched 12:00Z, 10.9 hours before the alert went out and 161 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
- 2895 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 725 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 272253 SVRSAT TXC123-285-272345- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 552 PM CDT THU JUL 27 2000 THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... LAVACA COUNTY DEWITT COUNTY * UNTIL 645 PM CDT * AT 552 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES SOUTHEAST OF YOAKUM...MOVING WEST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE... NEAR YOAKUM AT 610 PM CDT OVER HOCHHEIM AT 640 PM CDT THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. LAT...LON 2909 9762 2910 9705 2926 9689 2936 9725
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 Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 27, 5:15 PM CDT, 37 minutes earlier.
Area forecast discussion, Jul 27, 5:15 PM CDT, 37 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 515 PM CDT THU JUL 27 2000 ADDED 20 PERCENT POPS TO SOUTHERN COUNTIES PER LATEST SATELLITE AND RADAR TRENDS. -------------------------------------------------------------------- AFTERNOON DISCUSSION... HOT LATE JULY WEATHER EXPECTED THROUGH FRIDAY AND SATURDAY AFTERNOON. SUBTROPICAL HIGH IS STILL FCST TO RETREAT WEST SATURDAY THRU TUESDAY...AS S/W TROF WEST OF LOW ALOFT APPROACHES AREA SUNDAY AND IS FCST TO BE VCNTY OF AREA MONDAY AND PSBLY TUESDAY. THIS PATTERN...IF IT MAKES THE MARK...SIGNALS A SOME CHC OF SUMMER SHOWERS OR THUNDERSTORMS POSSIBLY SUNDAY THRU TUESDAY. DATA ALSO SHOWS PSBL WEAK FRONT/OUTFLOW BNDRY NEAR AREA LATE SUNDAY THROUGH TUESDAY. COMPOSITE DATA ALSO SHOWS WEAKNESS IN RIDGE ALOFT DEVELOPING OVR AREA SUNDAY AND MONDAY...AND FOR OVERALL NEXT WEEK SHOWS RIDGE PATTERN COULD STREGTHEN SOME TUE/WED...THEN WEAKEN AGAIN LATE NEXT WEEK. OVERALL...MEDIUM RANGE DATA SUGGEST SUBTROP HI WILL NOT BE AS STRONG ALOFT OVR AREA NEXT WEEK...AS HI CENTER MOVES WEST AND WEAKNESS IN HEIGHT FIELD ALOFT FORMS OVR AREA. .PRELIMINARY NUMBERS AUS 073/099/073/098 000- SAT 075/099/075/098 000- DRT 079/103/079/102 -0-0 --------------------------------------------------------------------- .EWX...NONE. 18/3
In the hours before
Special weather statement, Jul 27, 4:00 PM CDT, 1 hour 52 minutes before
TXZ171>173-183>194-202>209-217>225-228-280400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 400 PM CDT THU JUL 27 2000 ...JULY 2000 SUMMER HEAT WILL CONTINUE THROUGH FRIDAY... HOT LATE JULY...SOUTH TEXAS...SUMMER DAYS ACROSS PARTS OF THE HILL COUNTRY...CENTRAL AND SOUTH CENTRAL TEXAS EXPECTED THROUGH FRIDAY. AFTERNOON HIGHS ARE EXPECTED TO BE 96 TO NEAR 100 OVER EAST PARTS OF SOUTH CENTRAL TEXAS AND NEAR 100 TO NEAR 107 OVER WESTERN PARTS OF SOUTH CENTRAL TEXAS. OVERNIGHT AND EARLY MORNING LOWS ARE EXPECTED TO BE IN THE 70S. A FEW IDEAS TO MAKE THE HOT SUMMER DAY MORE BEARABLE...THUS REDUCING THE RISK OF SUNBURN AND OTHER HEAT RELATED PROBLEMS IS LISTED BELOW. REDUCE AS MUCH AS POSSIBLE EXPOSURE TO THE SUN. USE OF HATS... LIGHTWEIGHT AND LIGHT COLORED CLOTHING...SUNGLASSES AND SUN SHADES...AND SHADY AREAS WHERE POSSIBLE...WILL HELP MAKE FOR A BETTER DAY. IF OUT IN THE SUN...AVOID AS MUCH AS POSSIBLE EXPOSURE TO BOTH LIGHT COLORED SURFACES OR MATERIALS THAT REFLECT THE SUNS HEAT...WHERE YOU CAN GET THE DOUBLE AFFECTS OF THE SUNS ENERGY...FROM THE SUN ITSELF AND A SURFACE THAT REFLECTS ITS LIGHT AND HEAT. AVOID STRENUOUS ACTIVITIES DURING THE HOT PART OF THE DAY... BY RESCHEDULING THESE ACTIVITIES TO A COOLER PART OF THE DAY OR ANOTHER DAY. AVOID WORK ON OR NEAR ROOFTOPS...ESPECIALLY IN THE HOTTEST PART OF THE DAY...WHERE TEMPERATURES CAN BE TENS OF DEGREES HOTTER THAN THE AIR. WATER AND OTHER NON-ALCOHOLIC BEVERAGES ARE MORE HELPFUL DURING THE HEAT OF SUMMER...AND REDUCE THE RISKS OF DEHYDRATION. AVOID STOP AND GO TRAFFIC AS MUCH AS POSSIBLE. THESE SITUATIONS ARE HARD ON VEHICLES AND INCREASE THE RISK OF OVERHEATING AN ENGINE. PETS CAN ALSO SUCCUMB TO THE EFFECTS OF EXCESSIVE HEAT. INSURE PETS HAVE ADEQUATE DRINKING WATER AND A SHADY PLACE TO REST. PETS IN CARS WITH WINDOWS ROLLED UP...EVEN PARTIALLY IS VERY DANGEROUS. TEMPERATURES INSIDE A CAR WITH THE WINDOWS UP CAN REACH OVER 150 DEGREES QUICKLY...RESULTING IN HEAT STROKE AND DEATH. ONE OF THESE DAYS...COOLER WEATHER WILL COME. IN THE MEANTIME...THE IDEAS LISTED ABOVE WILL HELP MAKE WAY:S TO GET AROUND OR DEAL WITH THE SUMMER WEATHER.
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.