Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 93, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at May 4, 2002, 6:59 PM CDT for Tom Green County, Texas. It was in force for 61 min. 9 reports 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
- May 4, 2002, 6:59 PM CDT (23:59 UTC)
- Expired
- May 4, 2002, 8:00 PM CDT
- In force
- 61 min
- Issued by
- NWS San Angelo, TX
- Area
- Counties, with a storm outline in the text
County Tom Green County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 4, 7:04 PM CDT | Hail 0.88 | San Angelo, TX | |
| May 4, 7:05 PM CDT | Hail 0.75 | San Angelo, TX | |
| May 4, 7:09 PM CDT | Hail 1 | San Angelo, TX | |
| May 4, 7:17 PM CDT | Hail 1 | San Angelo, TX | |
| May 4, 7:19 PM CDT | Hail 0.88 | San Angelo, TX | |
| May 4, 7:22 PM CDT | Hail 1.25 | San Angelo, TX | |
| May 4, 7:24 PM CDT | Hail 1.5 | San Angelo, TX | |
| May 4, 7:28 PM CDT | Hail 1.75 | San Angelo, TX | Two severe thunderstorms developed over the city of San Angelo and produced hail up to golfball size for almost 40 minutes. The hail caused considerable property damage to homes and vehicles. |
| May 4, 7:50 PM CDT | Hail 1 | San Angelo, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 4, 5:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 12.0 hours before the alert went out and 169 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
- 3098 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 85 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 KSJT 042359 SVRSJT TXC451-050100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 659 PM CDT SAT MAY 4 2002 THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TOM GREEN COUNTY IN SOUTHWEST TEXAS * UNTIL 800 PM CDT * AT 659 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER WESTERN SAN ANGELO...MOVING NORTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... NORTHERN SAN ANGELO AT 705 PM CDT ORIENT AT 715 PM CDT SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. TAKE SHELTER INSIDE A STURDY BUILDING...AND STAY IN AN INTERIOR ROOM AWAY FROM WINDOWS. LAT...LON 3140 10068 3130 10051 3146 10022 3166 10050
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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 4, 5:50 PM CDT, 1 hour 9 minutes earlier.
Area forecast discussion, May 4, 5:50 PM CDT, 1 hour 9 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 550 PM CDT SAT MAY 4 2002 SENT A QUICK UPDATE TO ADD TORNADO WATCH FOR ALL BUT OUR SOUTHERN ZONES. LOW-LEVEL JET WILL CONTINUE TO INCREASE DURING THE NEXT FEW HOURS. THIS WILL INCREASE THE TORNADO THREAT. .SJT...TORNADO WATCH FOR THE FOLLOWING COUNTIES... BROWN-CALLAHAN-COLEMAN-COKE-CONCHO-FISHER-HASKELL-IRION- JONES-MCCULLOCH-NOLAN-RUNNELS-SAN SABA-SHACKELFORD- STERLING-TAYLOR-THROCKMORTON-TOM GREEN 23/HUBER **** 235 PM CDT SAT MAY 4 2002 DISCUSSION FOLLOWS **** RAIN AND SEVERE WEATHER THREAT TONIGHT...THEN ITS BACK TO SAME OL WEST CENTRAL TEXAS WEATHER PATTERN THE DRYLINE PUSHED WEST OF OUR AREA QUICKLY THIS MORNING...WARMFRONT IS POISED JUST TO OUR SOUTH AND WILL GRADUALLY MOVE NORTH ACROSS W CENTRAL TX DURING THE EVENING/NIGHT...ALONG WITH THE FRONT A GOOD LOW LEVEL JET AND A PULSE OF UPPER LEVEL ENERGY MOVES ACROSS...WILL PLACE OUR FORECAST AREA IN THE PRIME AREA FOR T-STORM DEVELOPMENT. MAINLY BETWEEN 6 PM AND MIDNIGHT. THOSE STORMS THAT FORM WILL HAVE A HIGH PROBABILITY OF BECOMING SEVERE WITH LARGE HAIL...DAMAGING WINDS AND EVEN TORNADOES. THREAT OF STORMS ENDS PRIMARILY WITH THE NORTHWARD PROGRESSION OF THE WARMFRONT...SO BY SUNRISE THE ONLY RAIN CHANCES REMAIN IN THE BIG COUNTRY. WILL TAKE OUT MENTION OF RAIN IN ALL BUT NORTHERN COUNTIES ON SUNDAY. WITH THE DRYLINE FIRMLY ENTRENCHED WELL TO OUR WEST THROUGH TUESDAY...CHANCES OF RAIN ACROSS THE AREA WILL STAY TO OUR WEST...AND WILL TAKE OUT MENTION OF RAIN FOR MONDAY AND TUESDAY. HOWEVER COUPLE OF WEAK BITS OF ENERGY MOVE TO OUR SOUTH AND EAST...SO A FEW STORMS MAY BE NEARBY. BY WEDNESDAY THE DRYLINE COMES BACK INTO PLAY...AND WE ALSO FLIRT WITH A WEAK COLDFRONT WEDNESDAY NIGHT INTO THURSDAY. THEREFORE WILL CONTINUE THE SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE END OF THE WEEK. BUT AFTER MORE THAN A MONTH WITHOUT SUBSTANTIAL RAIN ACROSS MOST OF THE AREA...TONIGHTS THE BEST SHOT WEVE HAD IN A WHILE. ABI 065/088/067/090 62-- SJT 066/090/068/092 51-- JCT 068/091/070/093 51-- .SJT...NONE. 25
In the hours before
Special weather statement, May 4, 1:36 PM CDT, 5 hours 23 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-042330- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 230 PM CDT SAT MAY 4 2002 ...SCATTERED SEVERE THUNDERSTORMS POSSIBLE ACROSS WEST CENTRAL TEXAS LATE THIS AFTERNOON AND EVENING... MOISTURE AND INSTABILITY HAVE INCREASED ACROSS WEST CENTRAL TEXAS THIS AFTERNOON AS A WARM FRONT LOCATED SOUTH OF THE CWA BEGINS TO DRIFT NORTHWARD. AS TEMPERATURES CLIMB CLOSE TO 90 DEGREES LATER THIS AFTERNOON... THUNDERSTORMS ARE LIKELY TO DEVELOP. THE MOST LIKELY AREA TO SEE STORMS LATER TODAY WILL BE ALONG THE WARM FRONT EXTENDING FROM THE NORTHWEST HILL COUNTRY AND THE HEARTLAND WEST THROUGH THE CONCHO VALLEY. AS LOW LEVEL WINDS STRENGTHEN THIS EVENING...THE STORMS ARE EXPECTED TO BECOME MORE WIDESPREAD. GIVEN THE AMOUNT OF INSTABILITY PRESENT ...ANY STORM THAT DOES DEVELOP WILL HAVE THE POTENTIAL OF REACHING SEVERE LEVELS...WITH LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS. HOWEVER...THERE DOES APPEAR TO BE SUFFICIENT WIND SHEAR TO ALLOW FOR THE DEVELOPMENT OF ISOLATED TORNADOES AS WELL. SPOTTER ACTIVATION MAY BE REQUIRED BY LATE AFTERNOON. FOR ADDITIONAL INFORMATION PLEASE SEE STATEMENTS AND OUTLOOKS FROM NATIONAL WEATHER SERVICE OFFICES ACROSS TEXAS...OKLAHOMA...AND NEW MEXICO. 15
Special weather statement, May 4, 2:30 PM CDT, 4 hours 29 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-042330- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 230 PM CDT SAT MAY 4 2002 ...SCATTERED SEVERE THUNDERSTORMS POSSIBLE ACROSS WEST CENTRAL TEXAS LATE THIS AFTERNOON AND EVENING... MOISTURE AND INSTABILITY HAVE INCREASED ACROSS WEST CENTRAL TEXAS THIS AFTERNOON AS A WARM FRONT LOCATED SOUTH OF THE CWA BEGINS TO DRIFT NORTHWARD. AS TEMPERATURES CLIMB CLOSE TO 90 DEGREES LATER THIS AFTERNOON... THUNDERSTORMS ARE LIKELY TO DEVELOP. THE MOST LIKELY AREA TO SEE STORMS LATER TODAY WILL BE ALONG THE WARM FRONT EXTENDING FROM THE NORTHWEST HILL COUNTRY AND THE HEARTLAND WEST THROUGH THE CONCHO VALLEY. AS LOW LEVEL WINDS STRENGTHEN THIS EVENING...THE STORMS ARE EXPECTED TO BECOME MORE WIDESPREAD. GIVEN THE AMOUNT OF INSTABILITY PRESENT ...ANY STORM THAT DOES DEVELOP WILL HAVE THE POTENTIAL OF REACHING SEVERE LEVELS...WITH LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS. HOWEVER...THERE DOES APPEAR TO BE SUFFICIENT WIND SHEAR TO ALLOW FOR THE DEVELOPMENT OF ISOLATED TORNADOES AS WELL. SPOTTER ACTIVATION MAY BE REQUIRED BY LATE AFTERNOON. FOR ADDITIONAL INFORMATION PLEASE SEE STATEMENTS AND OUTLOOKS FROM NATIONAL WEATHER SERVICE OFFICES ACROSS TEXAS...OKLAHOMA...AND NEW MEXICO. 15
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.