Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 39, NWS San Angelo, TX

April 11, 2001Coleman County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 11, 2001, 12:04 AM CDT for Coleman County, Texas. It was in force for 56 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 11, 2001, 12:04 AM CDT (05:04 UTC)
Expired: Apr 11, 2001, 1:00 AM CDT
In force: 56 min
Issued by: NWS San Angelo, TX
Area: Whole counties

County Coleman County, TX

What was reported inside it

Time	Report	Where	Remark
Apr 11, 12:15 AM CDT	Hail 1.75	Valera, 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.

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 10, 9:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 5.1 hours before the alert went out and 235 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: 1205 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1008 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 191 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 8.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSJT 110504
SVRSJT
TXC083-110600-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1204 AM CDT WED APR 11 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COLEMAN COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 100 AM CDT

* AT 1159 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES SOUTH OF TALPA...OR ABOUT 17 MILES
  SOUTHEAST OF BALLINGER...MOVING NORTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   VALERA AT 1215 AM CDT
   COLEMAN AT 1220 AM CDT

A TORNADO WATCH IS ALSO IN EFFECT. 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.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING
AND STAY AWAY FROM WINDOWS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT
DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.

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 10, 10:45 PM CDT, 1 hour 19 minutes earlier.

Area forecast discussion, Apr 10, 10:45 PM CDT, 1 hour 19 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
1045 PM CDT TUE APR 10 2001

UPDATED CURRENT PACKAGE TO REFLECT LATEST TORNADO WATCHES. IN
ADDITION...BASED ON STRONG WINDS ACROSS WEST TEXAS...HAVE INCLUDED A
WIND ADVISORY FOR ALL ZONES TONIGHT.

.SJT...TORNADO WATCH UNTIL MIDNIGHT ZONES 49-54-64-65-71-72-76>78
       TORNADO WATCH UNTIL 1 AM ZONES 98-99-113-114-127-128-
                                      66-139-140-73-154-155-168>170
       WIND ADVISORY ALL ZONES THROUGH 3 AM.
       FIRE WEATHER WATCH FOR ALL ZONES ON WEDNESDAY.

HUBER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 9:33 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	42 min
Apr 10, 9:49 PM CDT	Severe Thunderstorm Warning	SJT	Irion	41 min
Apr 10, 9:53 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	67 min
Apr 10, 10:15 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	45 min
Apr 10, 10:20 PM CDT	Tornado Warning	SJT	Sutton	40 min
Apr 10, 10:42 PM CDT	Severe Thunderstorm Warning	SJT	Irion	48 min
Apr 10, 10:50 PM CDT	Tornado Warning	SJT	Kimble, Menard	55 min
Apr 10, 10:52 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	38 min
Apr 10, 11:32 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Runnels	58 min
Apr 11, 12:24 AM CDT	Severe Thunderstorm Warning	SJT	Menard, Schleicher	66 min
Apr 11, 1:13 AM CDT	Severe Thunderstorm Warning	SJT	Runnels	62 min
Apr 11, 2:59 AM CDT	Severe Thunderstorm Warning	SJT	McCulloch	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning in 2001

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.