Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 71, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Apr 28, 2002, 6:47 PM CDT for Mason County, Texas. It was in force for 58 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
- Apr 28, 2002, 6:47 PM CDT (23:47 UTC)
- Expired
- Apr 28, 2002, 7:45 PM CDT
- In force
- 58 min
- Issued by
- NWS San Angelo, TX
- Area
- Counties, with a storm outline in the text
County Mason 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 nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.8 hours before the alert went out and 229 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
- 1448 J/kg
- Mixed-layer CIN
- -389 J/kg
- Mixed-layer LCL
- 1261 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
239
WUUS54 KSJT 282347
SVRSJT
TXC319-290045-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
645 PM CDT SUN APR 28 2002
THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MASON COUNTY IN SOUTH CENTRAL TEXAS
* UNTIL 745 PM CDT
* AT 645 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 8 MILES NORTHWEST OF KATEMCY...OR ABOUT 11
MILES SOUTH OF BRADY...MOVING SOUTHEAST AT 15 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
KATEMCY AT 700 PM CDT
FREDONIA AT 710 PM CDT
HAILSTONES AS LARGE AS ONE INCH ARE LIKELY WITH THIS STORM. MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING AND STAY
AWAY FROM WINDOWS.
LAT...LON 3093 9910 3093 9947 3064 9935 3066 9897
3087 9896What 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 28, 4:44 PM CDT, 2 hours 3 minutes earlier.
Area forecast discussion, Apr 28, 4:44 PM CDT, 2 hours 3 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 444 PM CDT SUN APR 28 2002 LINE OF CU CONTINUES TO DEVELOP FROM SAN SABA COUNTY WESTWARD TO JUST SOUTHEAST OF SAN ANGELO...WITH A FEW SHOWERS NOW SHOWING UP ON RADAR. WENT AHEAD AND UPDATED TO ADD ISOLATED SHOWERS AND STORMS TO THE SOUTHEAST ZONES. 07 ...215 PM DISCUSSION... CURRENT...SATELLITE IMAGERY INDICATES BAJA CALIFORNIA MOISTURE PLUME HAS DECREASED DURING THE LAST 24 HOURS. AT THE SURFACE...METAR DATA AND LAMP WIND STREAMLINE ANALYSIS SHOWS WEAK FRONT EXTENDS WEST TO EAST ACROSS OUR SOUTHERN ZONES. DAYS 1-3...MODELS INDICATE WEAK UPPER RIDGE WILL CONTINUE OVER TEXAS THROUGH WEDNESDAY. SOME MID- AND UPPER-LEVEL MOISTURE WILL CONTINUE UNTIL THEN. THUS...WILL CONTINUE PARTLY CLOUDY SKIES THROUGH WEDNESDAY. MODELS CONTINUE TO PRESENT LOW POPS THROUGH WEDNESDAY. HOWEVER...NOT CONFIDENT LOW-LEVEL FORCING WILL BE ABLE TO OVERCOME UPPER CAP. THUS...WILL CONTINUE DRY FORECAST. SURFACE DRYLINE WILL CONTINUE TO OUR WEST...WITH INSUFFICIENT DYNAMICS TO PUSH IT EAST. TEMPERATURES CLOSE TO GUIDANCE LOOK GOOD. SURFACE WINDS WILL BE LIGHT TONIGHT. TOMORROW...SOUTHERLY WINDS WILL BEGIN TO RETURN OVER OUR SOUTHERN ZONES...AND BY TOMORROW NIGHT SOUTHERLY WINDS WILL DOMINATE ALL OF WEST CENTRAL TEXAS. DAYS 4-7...MODELS NOW SUGGESTING COLD FRONT...WHICH WILL MOVE ACROSS WEST CENTRAL TEXAS LATE NEXT WEEK...WILL BRING MUCH COOLER AIR. THUS...DECREASED TEMPERATURES...ESPECIALLY FOR FRIDAY. ALSO...BROKE FRIDAY AND SATURDAY INTO TWO DIFFERENT PERIODS...AGAIN WITH MUCH COOLER TEMPERATURES LIKELY ON FRIDAY. UNFORTUNATELY RAIN CHANCES FOR FRIDAY AND SATURDAY DO NOT LOOK AS GOOD WITH THIS MODEL PACKAGE. HOWEVER...WILL CONTINUE A SLIGHT CHANCE FOR AT LEAST ONE MORE MODEL CYCLE. CCF PRELIMS... ABI 063/093/068/093 0000 SJT 065/095/070/095 0000 JCT 068/095/070/095 0000 .SJT...NONE. 23/HUBER
In the hours before
Special weather statement, Apr 28, 1:45 PM CDT, 5 hours 2 minutes before
TXZ054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-154- 155-168>170-281415- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 145 PM CDT SUN APR 28 2002 ...HAZARDOUS WEATHER IS NOT EXPECTED TONIGHT... A COOL FRONT WHICH ALLOWED COOL AIR TO FILTER INTO THE BIG COUNTRY WILL GRADUALLY DISSIPATE THIS EVENING. OTHERWISE...UPPER LEVEL HIGH PRESSURE WILL CONTINUE HOT AND DRY CONDITIONS. SPOTTER ACTIVATION IS NOT ANTICIPATED. FOR ADDITIONAL INFORMATION PLEASE SEE STATEMENTS AND OUTLOOKS FROM NATIONAL WEATHER SERVICE OFFICES ACROSS TEXAS...OKLAHOMA...AND NEW MEXICO.
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 5:58 PM CDT | Severe Thunderstorm Warning | SJT | McCulloch | 62 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.