Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 116, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Jun 23, 2001, 6:00 PM CDT for Llano County, Texas. It was in force for 60 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
- Jun 23, 2001, 6:00 PM CDT (23:00 UTC)
- Expired
- Jun 23, 2001, 7:00 PM CDT
- In force
- 60 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Llano County, TX
The radar
The Austin/San Antonio radar (KEWX), 129 km from the middle of the area, began a volume at 22:59 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
Del Rio, TX (KDRT), launched 12:00Z, 11.0 hours before the alert went out and 248 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
- 827 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1071 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KEWX 232303 SVRSAT TXC299-240000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT SAT JUN 23 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS... LLANO * UNTIL 700 PM CDT * AT 600 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN AREA OF SEVERE THUNDERSTORM OVER WEST AND SOUTHWEST LLANO COUNTY...MOVING EAST AND SOUTHEAST AT 5 TO 10 MPH. SHOWERS AND THUNDERSTOMS WILL AFFECT LLANO COUTNY FOR THE NEXT HOUR...SOME POSSIBLY SEVERE...WITH STRONG DAMAGING WIND... HAIL...BRIEF HEAVY RAIN AND DEADLY LIGHTNING. IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM HIGH AREAS...METAL OBJECTS...AND TALL ISOLATED TREES. MOVE INDOORS IF POSSIBLE BUT STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING THE TELEPHONE UNLESS IT IS AN EMERGENCY. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM H&AS PASSED. LAT...LON 3054 9892 3054 9848 3089 9850 3089 9894
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 Jun 23, 2:00 PM CDT, 4 hours earlier.
Area forecast discussion, Jun 23, 2:00 PM CDT, 4 hours before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 200 PM CDT SAT JUN 23 2001 UPPER RIDGE BUILDS EASTWARD OVER CWA NEXT 48 HOURS. RETROGRADING CUT OFF LOW OVER EASTERN US PUSHES BACK BY MIDWAY IN THE PERIOD ALLOWING WEAK DISTURBANCES TO SLIDE OVER THE CWA IN COL AREA IN THE EXTENDED PERIOD. STRONGEST OF THESE APPEARS TO BE AT END OF EXTENDED AND WILL TEND TOWARD CURRENT DRY FORECAST FOR TIME BEING. SEA BREEZE SHOULD BE ENHANCED ENOUGH TO WARRANT SLGHT CHANCE POPS SOUTHEAST ZONES IN THE EXTENDED. SHORTER TERM RIDGE SHOULD KEEP SKIES SUNNY AND TEMPS WARM. CONVECTION TONIGHT PUSHES SOUTH OF CWA ALL BUT RIO GRANDE ZONES BY MIDNIGHT WITH SHOWERS LINGERING THERE UNTIL SUNDAY AND DEPARTURE OF LAST BIT OF ENERGY. THERMALLY DRIVEN LOW LEVEL JET WILL AID SUNRISE STRATUS AFTER HIGH CLOUDS FROM MCS DEPART. PRELIMS... AUS 70/93/70/94 2000 SAT 72/95/73/96 2000 DRT 72/100/72/100 22-0 .EWX...NONE. 10/05/PM
In the hours before
Special weather statement, Jun 23, 4:39 PM CDT, 1 hour 21 minutes before
TXZ171>173-183>192-202>206-217>220-240329- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 439 PM CDT SAT JUN 23 2001 ANOTHER WEATHER SYSTEM ALOFT HAS CAUSED SCATTERED SHOWERS AND THUNDERSTORMS NORTH AND NORTHWEST OF THE TEXAS HILL COUNTRY THIS AFTERNOON. AS THESE SHOWERS AND THUNDERSTORMS MOVE SOUTHEAST... THEY MAY MOVE OVER THE TEXAS HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS LATER THIS AFTERNOON AND INTO THE EVENING HOURS. THE STRONGER THUNDERSTORMS COULD CAUSE BRIEF STRONG GUSTY WINDS AT 25 TO 50 MPH...SOME HAIL...AND LOCALLY HEAVY RAIN. OCCASIONAL DEADLY LIGHTNING WILL ALSO BE ANOTHER WEATHER HAZARD WITH THE SHOWERS AND THUNDERSTORMS LATER THIS AFTERNOON AND INTO PART OF THE EVENING. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 6:28 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 62 min |
| Jun 23, 6:58 PM CDT | Severe Thunderstorm Warning | EWX | Llano | 32 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001
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.