Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 276, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Dec 30, 2002, 12:58 PM CST for San Saba County, Texas. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Dec 30, 2002, 12:58 PM CST (18:58 UTC)
- Expired
- Dec 30, 2002, 1:30 PM CST
- In force
- 32 min
- Issued by
- NWS San Angelo, TX
- Area
- Counties, with a storm outline in the text
County San Saba County, TX
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 |
|---|---|---|---|
| Dec 30, 10:55 AM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 7.0 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
- 966 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 162 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
764 WUUS54 KSJT 301858 SVRSJT TXC411-301930- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 1258 PM CST MON DEC 30 2002 THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SAN SABA COUNTY IN NORTH CENTRAL TEXAS * UNTIL 130 PM CST * AT 1253 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTHWEST OF SAN SABA...MOVING NORTHEAST AT 30 MPH. DIME TO NICKEL SIZE HAIL AND WIND GUSTS UP TO 60 MPH CAN BE EXPECTED WITH THIS STORM. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. LAT...LON 3129 9881 3112 9873 3137 9789 3162 9801
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 Dec 30, 12:25 PM CST, 33 minutes earlier.
Area forecast discussion, Dec 30, 12:25 PM CST, 33 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 1225 PM CST MON DEC 30 2002 ...TORNADO WATCH UNTIL 6 PM FOR SOUTHEAST COUNTIES... UPDATED TO ADD TORNADO WATCH FOR FAR SOUTHEAST COUNTIES. A TROUGH IS PUSHING EAST ACROSS THESE COUNTIES. GIVEN THE INSTABILITY AHEAD OF THE TROUGH...EXPECT MAINLY MARGINALLY SEVERE HAIL THREAT WITH THE STRONGEST STORMS ALONG AND AHEAD OF THIS LINE. THE LINE SHOULD BE EAST OF THE FORECAST AREA BY 3 PM...THUS REDUCING THE RISK OF SEVERE WEATHER FOR LATE AFTERNOON. OTHERWISE...WITH THE UPPER LEVEL LOW APPROACHING THE BIG BEND...IT WILL CONTINUE SOUTHEAST ALONG THE RIO GRANDE VALLEY. ALSO CURRENT SHOWERS MOVING INTO WESTERN COUNTIES WILL CONTINUE WITH THE WRAP AROUND MOISTURE ACROSS THE REST OF WEST CENTRAL TEXAS. THUS BEHIND THE TROUGH IN THE SOUTHEAST...GENERALLY EXPECT ONLY SCATTERED LIGHT SHOWER ACTIVITY...WITH PERHAPS A FEW THUNDERSTORMS INTO THE EVENING. .SJT...TORNADO WATCH FOR KIMBLE...MASON AND SAN SABA. 24
Hazardous weather outlook, Dec 30, 5:15 AM CST, 7 hours 43 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-302000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 515 AM CST MON DEC 30 2002 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL TEXAS. .DAY ONE...TODAY THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON ACROSS THE NORTHWEST HILL COUNTRY...PARTS OF THE NORTHERN EDWARDS PLATEAU...AND THE HEARTLAND. THUNDERSTORMS MAY PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL. SOME OF THE COMMUNITIES IN THE SEVERE WEATHER THREAT ARE JUNCTION...BROWNWOOD..AND SAN SABA. IF YOU LIVE NEAR THESE COMMUNITIES...BE SURE TO MONITOR WEATHER CONDITIONS THROUGHOUT THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON.
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 30, 10:59 AM CST | Severe Thunderstorm Warning | SJT | Brown | 46 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; the sounding from the Mesonet's radiosonde archive.