Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 85, NWS San Angelo, TX

May 3, 2002Runnels County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 3, 2002, 1:46 AM CDT for Runnels County, Texas. It was in force for 44 min. 1 report 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 3, 2002, 1:46 AM CDT (06:46 UTC)
Expired: May 3, 2002, 2:30 AM CDT
In force: 44 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Runnels County, TX

What was reported inside it

Time	Report	Where	Remark
May 3, 2:15 AM CDT	Hail 0.75	Norton, 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 nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 6.8 hours before the alert went out and 208 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2457 m above ground
0-6 km bulk shear: 92 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 483 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSJT 030646
SVRSJT
TXC399-030730-

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

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  RUNNELS COUNTY IN SOUTHWEST TEXAS

* UNTIL 230 AM CDT

* AT 140 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM 2 MILES NORTHWEST OF NORTON...OR ABOUT 14    
  MILES SOUTHWEST OF WINTERS...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   HATCHEL AT 150 AM CDT
   WINTERS AT 155 AM CDT
   CREWS AT 205 AM CDT

HAIL UP TO THE SIZE OF QUARTERS AND WIND GUSTS OF 60 MPH ARE 
POSSIBLE WITH THIS STORM. TAKE SHELTER IN A STURDY BUILDING AND STAY 
AWAY FROM WINDOWS.

LAT...LON 3197 10021 3179 10020 3188 9972 3207 9973
          3207 9989

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, 4 hours 3 minutes earlier.

Area forecast discussion, May 2, 9:43 PM CDT, 4 hours 3 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.

Issued	Product	Office	Counties	Lasted
May 3, 2:24 AM CDT	Severe Thunderstorm Warning	SJT	Coke	51 min
May 3, 2:41 AM CDT	Severe Thunderstorm Warning	SJT	Coleman	34 min
May 3, 3:05 AM CDT	Severe Thunderstorm Warning	SJT	Callahan	40 min
May 3, 3:40 AM CDT	Severe Thunderstorm Warning	SJT	Coleman	35 min
May 3, 4:02 AM CDT	Severe Thunderstorm Warning	SJT	Callahan	28 min
May 3, 4:10 AM CDT	Severe Thunderstorm Warning	SJT	Brown	35 min
May 3, 8:22 AM CDT	Severe Thunderstorm Warning	SJT	San Saba	23 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every 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.