Alert archive / Texas / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 98
The Storm Prediction Center issued this severe thunderstorm watch at Apr 16, 2002, 5:00 PM CDT for 20 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 16, 2002, 5:00 PM CDT (22:00 UTC)
- Expired
- Apr 16, 2002, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
Counties Atascosa County, TX, Bandera County, TX, Bastrop County, TX, Bexar County, TX, Blanco County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Frio County, TX, Gillespie County, TX, Guadalupe County, TX, Hays County, TX, Kendall County, TX, Llano County, TX, Medina County, TX, Milam County, TX, Travis County, TX, Williamson County, TX, Wilson County, TX, Zavala County, TX
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 5:17 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Comal, Guadalupe | 58 min |
| Apr 16, 5:43 PM CDT | Tornado Warning | EWX | Atascosa, Karnes | 62 min |
| Apr 16, 6:16 PM CDT | Severe Thunderstorm Warning | EWX | Comal, Hays | 44 min |
| Apr 16, 6:20 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Kendall, Medina | 55 min |
| Apr 16, 6:41 PM CDT | Tornado Warning | EWX | Bexar, Kendall | 49 min |
| Apr 16, 6:46 PM CDT | Tornado Warning | EWX | Atascosa, Karnes | 29 min |
| Apr 16, 7:00 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 30 min |
| Apr 16, 7:04 PM CDT | Severe Thunderstorm Warning | EWX | Wilson | 56 min |
| Apr 16, 7:16 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Karnes | 59 min |
| Apr 16, 7:31 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 29 min |
| Apr 16, 7:45 PM CDT | Severe Thunderstorm Warning | EWX | Comal, Guadalupe | 45 min |
| Apr 16, 7:58 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 22 min |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 10.0 hours before the alert went out and 199 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
- 791 J/kg
- Mixed-layer CIN
- -305 J/kg
- Mixed-layer LCL
- 1536 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 347 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 162203 SEL8 SPC WW 162159 TXZ000-170400- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 98 STORM PREDICTION CENTER NORMAN OK 459 PM CDT TUE APR 16 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTH TEXAS EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 500 PM UNTIL 1100 PM CDT. HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTH OF HONDO TEXAS TO 45 MILES NORTH OF AUSTIN TEXAS. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. OTHER WATCH INFORMATION... CONTINUE...WW 96...WW 97... DISCUSSION...A FEW SUPERCELLS EXPECTED TO PERSIST ALONG AND W OF SEA BREEZE BOUNDARY AOVER WW REGION...AS HEATING AND GLANCING INFLUENCE OF UPPER TROUGH FURTHER DESTABLIZE REGION OF MODEST DEEP SHEAR. AN ISOLATED TORNADO OR TWO POSSIBLE INVOF BOUNDARY INTERSECTIONS...BUT MAIN THREAT SHOULD BE LARGE HAIL/LOCALLY HIGH WINDS. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 24025. ...CORFIDI 305,0964 282,0981 282,1001 305,0984 WWUS20 KWNS 162203 SEL8 SPC WW 162159 TXZ000-170400- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 98 STORM PREDICTION CENTER NORMAN OK 459 PM CDT TUE APR 16 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTH TEXAS EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 500 PM UNTIL 1100 PM CDT. HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTH OF HONDO TEXAS TO 45 MILES NORTH OF AUSTIN TEXAS. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. OTHER WATCH INFORMATION... CONTINUE...WW 96...WW 97... DISCUSSION...A FEW SUPERCELLS EXPECTED TO PERSIST ALONG AND W OF SEA BREEZE BOUNDARY AOVER WW REGION...AS HEATING AND GLANCING INFLUENCE OF UPPER TROUGH FURTHER DESTABLIZE REGION OF MODEST DEEP SHEAR. AN ISOLATED TORNADO OR TWO POSSIBLE INVOF BOUNDARY INTERSECTIONS...BUT MAIN THREAT SHOULD BE LARGE HAIL/LOCALLY HIGH WINDS. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 24025. ...CORFIDI 305,0964 282,0981 282,1001 305,0984
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 4:45 PM CDT | Tornado Watch | SPC | Archer, Bell, Bosque, Brown, Clay, Collin and 36 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2002Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive.