Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 116, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Nov 26, 2002, 3:21 AM CST for Travis County, Texas. It was in force for 54 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Nov 26, 2002, 3:21 AM CST (09:21 UTC)
- Expired
- Nov 26, 2002, 4:15 AM CST
- In force
- 54 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
County Travis County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 26, 3:45 AM CST | Hail 1 | Lake Travis, 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 9.4 hours before the alert went out and 282 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
- 1014 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
482
WUUS54 KEWX 260921
SVRSAT
TXC453-261015-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
321 AM CST TUE NOV 26 2002
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
TRAVIS
* UNTIL 415 AM CST
* AT 321 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 8 MILES SOUTHWEST OF LAKEWAY...MOVING NORTHEAST
AT 25 MPH.
* THE SEVERE THUNDERSTORM WILL BE...
OVER LAKEWAY AT 335 AM
5 MILES SOUTHEAST OF LAGO VISTA AT 345 AM
3 MILES SOUTHEAST OF JONESTOWN AT 400 AM
BRIEF LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU
ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO
A SUBSTANTIAL SHELTER.
LAT...LON 3036 9814 3025 9802 3015 9779 3033 9756
3043 9780 3059 9801What 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 Nov 26, 3:00 AM CST, 21 minutes earlier.
Area forecast discussion, Nov 26, 3:00 AM CST, 21 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 300 AM CST TUE NOV 26 2002 CURRENT WEATHER ANALYSIS... THE PAST 24 HOURS HAS GIVEN THE REGION A COLD FRONTAL PASSAGE FOLLOWED WITH A BUILDING RIDGE INTO THE REGION...CLOUDY SKIES AND OVERRUNNING PRECIPITATION. SURFACE WINDS NORTH TO NORTHEAST WITH TEMPERATURES IN THE 40S. 88D RADAR SHOWS SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS MOVING NORTHWARD ACROSS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY. CURRENT MODEL GUIDANCE ANALYSIS... THE 00Z AVN MOS AND THE NGM MOS BOTH HAVE BELOW FREEZING TEMPERATURES FORECASTED ACROSS THE NORTHERN COUNTIES OF THE TEXAS HILL COUNTRY FOR WEDNESDAY MORNING. THE ETA TIME HEIGHT FOR THE HILL COUNTRY HAS 100 PERCENT R/H VALUES ASSOCIATED WITH BELOW FREEZING TEMPERATURES FROM 5 TO 8K TONIGHT INTO WEDNESDAY MORNING...WITH A VERY DRY LOWER LAYER AT THE SURFACE TO 5K. AVN PRECIPITABLE WATER IS AROUND 0.8 INCHES. THE GFS...ETA AND NGM ALL HAVE SIMILAR TRENDS IN THAT THEY BRING REINFORCING RIDGES INTO AND ACROSS THE REGION THROUGH THE WEEK. THIS FOLLOWS YESTERDAYS GUIDANCE INDICATING ANOTHER FRONT INTO THE REGION ON WEDNESDAY AND YET ANOTHER ON SATURDAY. 500MB GUIDANCE BRING KEEP SOUTHWEST FLOW WITH A DEEP LOW OVER SOUTHERN CALIFORNIA BAJA THROUGH 72 HOURS. CURRENT WEATHER OUTLOOK... THE BIG QUESTIONS IS...THE POSSIBILITY OF FREEZING RAIN ACROSS HILL COUNTRY COUNTIES TONIGHT INTO WEDNESDAY MORNING. LOOK FOR COLD AIR ADVECTION ASSOCIATED WITH NEXT FRONTAL SYSTEM TO MOVE INTO THE REGION LATE WEDNESDAY...TEMPERATURES TONIGHT AND WEDNESDAY NOT AS COLD AS EXPECTED AND PRECIPITABLE WATER VALUES OVER THE HILL COUNTRY TOO LOW TO PROVIDE ENOUGH MOISTURE. ONGOING RAIN/SHOWER ACTIVITY WILL CONTINUE THROUGH THE DAY WITH A DECREASING TREND LATE TODAY AND INTO THE NIGHT WITH MOST PRECIPITATION OCCURRING SOUTH OF THE HILL COUNTRY AS DIRER AIR CONTINUES TO FILTER SOUTHWARD WITH THE BUILDING RIDGE. PRELIMINARY NUMBERS... AUS 45/35/47/35/50 64320 DRT 45/35/45/35/50 54320 SAT 47/37/47/35/52 64320 .EWX...NONE.
Hazardous weather outlook, Nov 25, 5:42 AM CST, 21 hours 39 minutes before
TXZ171>173-183>194-202>209-217>225-228-261200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 542 AM CST MON NOV 25 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL TEXAS. .DAY ONE... NO HAZARDOUS WEATHER IS EXPECTED TODAY OR TONIGHT. .SPOTTER CALL TO ACTION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. .DAYS 2 THROUGH 7... THERE IS A SLIGHT CHANCE OF FREEZING RAIN IN THE HILL COUNTRY TUESDAY NIGHT AND WEDNESDAY MORNING AS TEMPERATURES APPROACH THE FREEZING MARK. IF FREEZING RAIN DOES DEVELOP...ICE ACCUMULATIONS ARE EXPECTED TO BRIEF AND VERY LIGHT.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 26, 2:47 AM CST | Severe Thunderstorm Warning | EWX | Blanco, Comal, Hays | 58 min |
| Nov 26, 3:35 AM CST | Severe Thunderstorm Warning | EWX | Caldwell, Guadalupe | 55 min |
| Nov 26, 4:06 AM CST | Severe Thunderstorm Warning | EWX | Williamson | 54 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002
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.