Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 88, NWS San Angelo, TX

May 3, 2002Callahan County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 3, 2002, 3:05 AM CDT for Callahan County, Texas. It was in force for 40 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
May 3, 2002, 3:05 AM CDT (08:05 UTC)
Expired
May 3, 2002, 3:45 AM CDT
In force
40 min
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

County Callahan 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

Fort Worth, TX (KFWD), launched 00:00Z, 8.1 hours before the alert went out and 206 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.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2002-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2002-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 176 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
925 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
176 m²/s²
0-3 km storm-relative helicity
264 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KSJT 030805
SVRSJT
TXC059-030845-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
304 AM CDT FRI MAY 3 2002

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CALLAHAN COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 345 AM CDT

* AT 257 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SEVERE THUNDERSTORM 12 MILES SOUTHWEST OF CROSS PLAINS... MOVING   
  NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CROSS PLAINS AT 310 AM CDT
  ATWELL AT 320 AM CDT

HAIL UP TO THE SIZE OF GOLF BALLS AND DAMAGING WINDS IN EXCESS OF 70
MPH CAN BE EXPECTED WITH THIS STORM. MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 3211 9954 3211 9923 3211 9914 3234 9911
          3224 9948

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 2, 9:43 PM CDT, 5 hours 22 minutes earlier.

Area forecast discussion, May 2, 9:43 PM CDT, 5 hours 22 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
943 PM CDT THU MAY 2 2002

02Z SURFACE MAP SHOWS A COLD FRONT FROM JUST SOUTH OF KAUS TO NORTH
OF KDRT. GOES STRATUS/IR CHANNEL SHOWS LOWER CLOUDS MAKING THEIR WAY
UP THE ESCARPMENT...INTO THE NW HILL COUNTRY AND HEARTLAND ZONES. UP
NORTH...A STEADY STREAM OF MID AND HIGH CLOUDS EXTENDED FROM FAR W
TX...ACROSS THE BIG COUNTRY...INTO OK.

00Z MESO-ETA PROGS RAPID 850 MB MOISTURE RETURN OVER WC TX
OVERNIGHT...WITH DEWPOINT TEMPS IN THE 15-19C RANGE. 850 MB HEIGHT
TROF/DRYLINE IS PROGGED TO ENTER WC TX IN THE 12Z-15Z TIME FRAME...
AS A MIDLEVEL SHORTWAVE TROF MOVES INTO THE PANHANDLE. EXPECT RAIN
CHANCES TO BE CONFINED TO THE EARLY MORNING HOURS PRIOR TO AND JUST
FOLLOWING SUNRISE.

CURRENT FORECAST APPEARS ON TARGET...BUT WILL CHANGE FIRST PERIOD
SKY CONDITION TO REFLECT CURRENT AND EXPECTED TREND TO MOSTLY
CLOUDY...AND MAKE A FEW MINOR FIRST PERIOD ADJUSTMENTS ELSEWHERE.

14

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 1:46 AM CDTSevere Thunderstorm WarningSJTRunnels44 min
May 3, 2:24 AM CDTSevere Thunderstorm WarningSJTCoke51 min
May 3, 2:41 AM CDTSevere Thunderstorm WarningSJTColeman34 min
May 3, 3:40 AM CDTSevere Thunderstorm WarningSJTColeman35 min
May 3, 4:02 AM CDTSevere Thunderstorm WarningSJTCallahan28 min
May 3, 4:10 AM CDTSevere Thunderstorm WarningSJTBrown35 min
May 3, 8:22 AM CDTSevere Thunderstorm WarningSJTSan Saba23 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.