Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 33, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Apr 7, 2002, 3:07 PM CDT for Throckmorton County, Texas. It was in force for 53 min. 3 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
- Apr 7, 2002, 3:07 PM CDT (20:07 UTC)
- Expired
- Apr 7, 2002, 4:00 PM CDT
- In force
- 53 min
- Issued by
- NWS San Angelo, TX
- Area
- Counties, with a storm outline in the text
County Throckmorton County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 7, 3:33 PM CDT | Tornado F0 | Throckmorton, TX | A supercell thunderstorm dropped the first of its 3 tornadoes across Throckmorton County. This initial tornado was short lived and weak, producing no injuries and no damage. |
| Apr 7, 3:34 PM CDT | Tornado F2 | Throckmorton, TX | Immediately after the first tornado dissipated, a second larger, more stable multiple vortex tornado developed. Tracking along a 7 mile long path across western Throckmorton County, this tornado would reach over three quarters of a mile wide. Fortunately, the |
| Apr 7, 3:50 PM CDT | Tornado F0 | Throckmorton, TX | The third and final tornado across Throckmorton County was similar to the first, a brief tornado touchdown in open country that produced no damage. |
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 |
|---|---|---|---|
| Apr 7, 1:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 8.1 hours before the alert went out and 276 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
- 460 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 368 m²/s²
- 0-3 km storm-relative helicity
- 553 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 072007 SVRSJT TXC447-072100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 306 PM CDT SUN APR 7 2002 THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... THROCKMORTON COUNTY IN NORTH CENTRAL TEXAS * UNTIL 400 PM CDT * AT 302 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER EAST CENTRAL HASKELL COUNTY...OR ABOUT 16 MILES EAST OF HASKELL...MOVING NORTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL CROSS RURAL PORTIONS OF WESTERN THROCKMORTON COUNTY. 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 3338 9946 3307 9944 3329 9901 3339 9914
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 Apr 7, 2:40 PM CDT, 27 minutes earlier.
Area forecast discussion, Apr 7, 2:40 PM CDT, 27 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION...CORRECTED TIME
NATIONAL WEATHER SERVICE SAN ANGELO TX
240 PM CDT SUN APR 7 2002
UPDATED ZONE PACKAGE AGAIN TO ADD TORNADO WATCH UNTIL 8 PM THIS
EVENING FOR BROWN AND SAN SABA.
.SJT...TORNADO WATCH BROWN AND SAN SABA UNTIL 8 PM THIS EVENING.
...TORNADO WATCH ALL OTHER ZONES...EXCEPT MASON...UNTIL 7 PM
THIS EVENING.
...CAUTION ON AREA LAKES ALL ZONES THIS AFTERNOON.
23/HUBER
**** 312 AM CDT SUN APR 7 2002 DISCUSSION FOLLOWS ****
ONGOING PRECIP THIS MORNING ACROSS WEST CENTRAL TEXAS HELPED ALONG
BY A VORT MAX MOVING ACROSS AHEAD OF THE MAIN UPPER TOUGH OVER
WESTERN NEW MEXICO. PRECIP WILL CONTINUE TO MOVE EASTWARD ACROSS
THE CONCHO VALLEY AND BIG COUNTRY THIS MORNING. CONVECTION WILL
REMAIN ELEVATED EARLY THIS MORNING ABOVE A COOL AND STABLE
SURFACE...BUT WOULD NOT BE SURPRISED TO SEE A LITTLE HAIL WITH A
COUPLE OF THE STRONGER STORMS. MAIN PRECIP THIS MORNING WILL OCCUR
ACROSS THE BIG COUNTRY AS THE STORMS CONTINUE TO MOVE NORTHEAST.
ANOTHER ROUND OF STORMS IS EXPECTED THIS AFTERNOON AS THE DRYLINE
OVER FAR WEST TEXAS MOVES EASTWARD ACROSS THE AREA AS THE MAIN UPPER
TROUGH MOVES EAST. STORMS SHOULD BEGIN TO FIRE EARLY THIS AFTERNOON
ACROSS WESTERN COUNTIES AND MOVE EASTWARD THROUGH THE AFTERNOON AND
EVENING HOURS. LOW CLOUDS AND DRIZZLE ACROSS MUCH OF WEST CENTRAL
TEXAS WILL INHIBIT DAYTIME HEATING...BUT WITH COOLER TEMPERATURES
ALOFT...WILL STILL SEE DECENT INSTABILITY. ETA STILL SHOWING CAPES
IN THE 1500 RANGE BY THIS AFTERNOON ACROSS CENTRAL AND EASTERN
COUNTIES. EXPECT TO SEE A FEW SEVERE STORMS THIS AFTERNOON AND
EVENING AS THE UPPER TROUGH AND DRYLINE MOVE THROUGH.
CLEARING EXPECTED TONIGHT FROM WEST TO EAST WITH TEMPERATURES A BIT
COOLER BY MORNING. ZONAL FLOW EXPECTED THROUGH MID WEEK WITH PARTLY
CLOUDY SKIES...WARMER TEMPERATURES AND NO PRECIP. THE NEXT UPPER
TROUGH MOVES INTO THE WEST COAST ON WEDNESDAY...REACHING WEST TEXAS
ON FRIDAY. LATEST MODEL RUN SHOWS THE TRACK A LITTLE FURTHER SOUTH
INTO WEST CENTRAL TEXAS ON FRIDAY AFTERNOON. WILL GO AHEAD AND
INTRODUCE MORE CLOUDS AND A SLIGHT CHANCE OF PRECIP INTO THE
FORECAST FOR FRIDAY.
CCF PRELIMS...
ABI 070/051/075/050 630
SJT 073/052/077/051 510
JCT 075/053/078/050 550
.SJT...CAUTION ON AREA LAKES TODAY.
08In the hours before
Special weather statement, Apr 7, 12:00 PM CDT, 3 hours 7 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-071930- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 1200 PM CDT SUN APR 7 2002 ...THERE IS A MODERATE RISK FOR SEVERE STORMS OVER ALL OF WEST CENTRAL TEXAS THIS AFTERNOON... A POTENT UPPER LEVEL DISTURBANCE WILL MOVE OUT OF NEW MEXICO INTO WEST TEXAS THIS AFTERNOON INTO TONIGHT. A DRYLINE WILL ADVANCE EASTWARD ACROSS MUCH OF WEST CENTRAL TEXAS DURING THE AFTERNOON. THUNDERSTORMS WILL RAPIDLY DEVELOP BY EARLY AFTERNOON ALONG THE DRYLINE AS IT ENTERS WESTERN SECTIONS OF THE REGION. CONDITIONS WILL BE FAVORABLE FOR THE STORMS WILL RAPIDLY INTENSIFY AND BECOME SEVERE. GIVEN THE STRENGTH OF THIS SYSTEM...ISOLATED STRONG TORNADOS WILL BE POSSIBLE...ALONG WITH VERY LARGE HAIL AND DAMAGING WINDS. PEOPLE THROUGHOUT WEST CENTRAL TEXAS SHOULD TUNE INTO NOAA WEATHER RADIO...LOCAL TELEVISION AND RADIO STATIONS FOR THE LATEST WEATHER INFORMATION THIS AFTERNOON AND EVENING. KEEP INFORMED OF THE LATEST WEATHER DEVELOPMENTS. BE READY TO SEEK SHELTER IF WARNINGS ARE ISSUED. SPOTTER ACTIVATION WILL LIKELY BE NEEDED.
Special weather statement, Apr 7, 12:08 PM CDT, 2 hours 59 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-071930- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE SAN ANGELO TX 1208 PM CDT SUN APR 7 2002 ...THERE IS A MODERATE RISK FOR SEVERE STORMS OVER ALL OF WEST CENTRAL TEXAS THIS AFTERNOON... A POTENT UPPER LEVEL DISTURBANCE WILL MOVE OUT OF NEW MEXICO INTO WEST TEXAS THIS AFTERNOON INTO TONIGHT. A DRYLINE WILL ADVANCE EASTWARD ACROSS MUCH OF WEST CENTRAL TEXAS DURING THE AFTERNOON. THUNDERSTORMS WILL RAPIDLY DEVELOP BY EARLY AFTERNOON ALONG THE DRYLINE AS IT ENTERS WESTERN SECTIONS OF THE REGION. CONDITIONS WILL BE FAVORABLE FOR THE STORMS TO RAPIDLY INTENSIFY AND BECOME SEVERE. GIVEN THE STRENGTH OF THIS SYSTEM...ISOLATED STRONG TORNADOS WILL BE POSSIBLE...ALONG WITH VERY LARGE HAIL AND DAMAGING WINDS. PEOPLE THROUGHOUT WEST CENTRAL TEXAS SHOULD TUNE INTO NOAA WEATHER RADIO...LOCAL TELEVISION AND RADIO STATIONS FOR THE LATEST WEATHER INFORMATION THIS AFTERNOON AND EVENING. BE READY TO SEEK SHELTER IF WARNINGS ARE ISSUED. SPOTTER ACTIVATION WILL LIKELY BE NEEDED.
Special weather statement, Apr 7, 12:09 PM CDT, 2 hours 58 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-071930- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE SAN ANGELO TX 1209 PM CDT SUN APR 7 2002 ...THERE IS A MODERATE RISK FOR SEVERE STORMS OVER ALL OF WEST CENTRAL TEXAS THIS AFTERNOON... A POTENT UPPER LEVEL DISTURBANCE WILL MOVE OUT OF NEW MEXICO INTO WEST TEXAS THIS AFTERNOON INTO TONIGHT. A DRYLINE WILL ADVANCE EASTWARD ACROSS MUCH OF WEST CENTRAL TEXAS DURING THE AFTERNOON. THUNDERSTORMS WILL RAPIDLY DEVELOP BY EARLY AFTERNOON ALONG THE DRYLINE AS IT ENTERS WESTERN SECTIONS OF THE REGION. CONDITIONS WILL BE FAVORABLE FOR THE STORMS TO RAPIDLY INTENSIFY AND BECOME SEVERE. GIVEN THE STRENGTH OF THIS SYSTEM...ISOLATED STRONG TORNADOES WILL BE POSSIBLE...ALONG WITH VERY LARGE HAIL AND DAMAGING WINDS. PEOPLE THROUGHOUT WEST CENTRAL TEXAS SHOULD TUNE INTO NOAA WEATHER RADIO...LOCAL TELEVISION AND RADIO STATIONS FOR THE LATEST WEATHER INFORMATION THIS AFTERNOON AND EVENING. BE READY TO SEEK SHELTER IF WARNINGS ARE ISSUED. SPOTTER ACTIVATION WILL LIKELY BE NEEDED.
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 7:29 PM CST | Severe Thunderstorm Warning | SJT | Taylor | 31 min |
| Apr 7, 1:32 PM CDT | Severe Thunderstorm Warning | SJT | Sterling | 58 min |
| Apr 7, 2:02 PM CDT | Tornado Warning | SJT | Crockett | 58 min |
| Apr 7, 2:35 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 40 min |
| Apr 7, 2:57 PM CDT | Tornado Warning | SJT | Crockett | 48 min |
| Apr 7, 3:10 PM CDT | Severe Thunderstorm Warning | SJT | Sterling | 65 min |
| Apr 7, 3:12 PM CDT | Severe Thunderstorm Warning | SJT | Taylor | 33 min |
| Apr 7, 3:14 PM CDT | Severe Thunderstorm Warning | SJT | Tom Green | 46 min |
| Apr 7, 3:17 PM CDT | Severe Thunderstorm Warning | SJT | Coke | 58 min |
| Apr 7, 3:19 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 41 min |
| Apr 7, 3:25 PM CDT | Tornado Warning | SJT | Schleicher, Sutton | 65 min |
| Apr 7, 3:30 PM CDT | Tornado Warning | SJT | Throckmorton | 60 min |
| Apr 7, 3:40 PM CDT | Severe Thunderstorm Warning | SJT | Coleman, Runnels | 35 min |
| Apr 7, 3:42 PM CDT | Severe Thunderstorm Warning | SJT | Taylor | 63 min |
| Apr 7, 3:44 PM CDT | Severe Thunderstorm Warning | SJT | Callahan | 61 min |
| Apr 7, 3:52 PM CDT | Severe Thunderstorm Warning | SJT | Shackelford | 53 min |
| Apr 7, 3:55 PM CDT | Severe Thunderstorm Warning | SJT | Jones | 65 min |
| Apr 7, 3:58 PM CDT | Severe Thunderstorm Warning | SJT | Crockett | 62 min |
| Apr 7, 4:08 PM CDT | Flash Flood Warning | SJT | Throckmorton | 2 hr |
| Apr 7, 4:09 PM CDT | Severe Thunderstorm Warning | SJT | Coleman, Runnels | 66 min |
| Apr 7, 4:22 PM CDT | Severe Thunderstorm Warning | SJT | Fisher | 53 min |
| Apr 7, 4:24 PM CDT | Tornado Warning | SJT | Menard, Schleicher | 66 min |
| Apr 7, 4:27 PM CDT | Tornado Warning | SJT | Throckmorton | 48 min |
| Apr 7, 4:43 PM CDT | Severe Thunderstorm Warning | SJT | Concho, McCulloch | 62 min |
| Apr 7, 5:04 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 56 min |
| Apr 7, 5:25 PM CDT | Tornado Warning | SJT | McCulloch, Mason, Menard | 65 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.