Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 113, NWS San Angelo, TX

May 30, 2001Coleman County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 30, 2001, 10:01 PM CDT for Coleman County, Texas. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 30, 2001, 10:01 PM CDT (03:01 UTC)
Expired: May 30, 2001, 10:30 PM CDT
In force: 29 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Coleman County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 30, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 3.0 hours before the alert went out and 218 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: 3359 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1522 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSJT 310301
SVRSJT
TXC083-310330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1001 PM CDT WED MAY 30 2001

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

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

* UNTIL 1030 PM CDT

* AT 953 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTHEAST OF SANTA ANNA...MOVING
  SOUTHEAST AT 40 MPH.

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.

LAT...LON 3203 9934 3180 9951 3160 9927 3203 9923

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 30, 7:05 PM CDT, 2 hours 56 minutes earlier.

Area forecast discussion, May 30, 7:05 PM CDT, 2 hours 56 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
705 PM CDT WED MAY 30 2001

UPDATED ZONES TO INCLUDE SEVERE THUNDERSTORM WATCH FOR THE BIG
COUNTRY AND NORTHERN CONCHO VALLEY UNTIL 11 PM TONIGHT.

LATEST LAMP ANALYSIS OF SURFACE WINDS AND STREAMLINES INDICATES
CONVERGENCE ALONG THE FRONTAL BOUNDARY. HAVE RECEIVED REPORTS OF
HAIL IN JONES COUNTY AND FISHER COUNTY RANGING FROM QUARTER SIZE TO
GOLFBALL SIZE.

.SJT...SEVERE THUNDERSTORM WATCH TXZ049-054-064>066
       098-099-113-114-127-128 UNTIL 11 PM TONIGHT.

HUBER

********  200 PM CDT WED MAY 30 2001 DISCUSSION FOLLOWS  *********

PER LATEST MESOSCALE ANALYSIS AND LOCAL WARNING RADARS...COLD FRONT
EXTENDED FROM STERLING CITY AND SWEETWATER...TO HASKELL AND
THROCKMORTON AT 18Z. PER MSAS 3 HR PRES CHANGE...FRONT PULLING UP
STATIONARY. AIR MASS IN VICINITY EXTREMELY UNSTABLE WITH LIFTED
INDICES TO MINUS 10...AND GOES SATELLITE BASED CAPES IN EXCESS OF
5000 J/KG. PER WATER VAPOR IMAGERY...SHORTWAVE TROUGH EMBEDDED IN
NORTHWEST FLOW EVIDENT OVER CENTRAL COLORADO.

MESOETA THE MODEL OF CHOICE...SIMPLY DUE TO BETTER RESOLUTION OF LOW
LEVEL FEATURES AND TIMING OF APPROACHING SHORTWAVE TROUGH. PRESENT
INDICATIONS SUGGEST CAP WILL ERODE NEAR THE STALLED FRONT LATE THIS
AFTERNOON AND EARLY THIS EVENING...ALLOWING FOR EXPLOSIVE
THUNDERSTORM DEVELOPMENT. SPC HAS UPGRADED PORTIONS OF THE BIG
COUNTRY INTO THE MODERATE CATEGORY. EVENTUALLY...A TRANSITION TOWARD
AN MCS IS EXPECTED LATE THIS EVENING AND OVERNIGHT AS THE SHORTWAVE
TROUGH CATCHES UP TO THE SOUTHWARD SINKING COLD FRONT. SO FOR THE
REMAINDER OF WEST CENTRAL TEXAS...EXPECT SOME MUCH NEEDED RAINFALL
AND STRONG GUSTY WINDS...PERHAPS REACHING SEVERE LIMITS.

DEEP MOISTURE HAS BEEN PROBLEMATIC OF LATE. APPEARS THIS WILL NOT BE
THE CASE TONIGHT AS PRECIPITABLE WATER VALUES CLIMB TO NEAR 2.00
INCHES. SO UNLIKE THE HIGH BASED SPRINKLES OF LATE...GULLY WASHERS A
GOOD BET WITH AMOUNTS APPROACHING TWO INCHES LOCALLY.

THE ATMOSPHERE WILL REMAIN MOIST AND UNSTABLE ON THURSDAY...WITH
RESIDUAL BOUNDARIES PROVIDING THE FOCUS. 20 POPS PLANNED ACROSS THE
BOARD. AIR MASS BECOMES CAPPED THURSDAY NIGHT AND FRIDAY. AVN HINTS
AT ANOTHER MCS FRIDAY NIGHT...BUT WE/LL NOT MENTION AS MID LEVEL
TEMPERATURES REMAIN RATHER WARM.

PRELIM CCF...

ABI 065/083/063/087  7210
SJT 067/085/062/090  5210
JCT 069/082/064/088  5210

.SJT...NONE.

17

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 7:15 PM CDT	Severe Thunderstorm Warning	SJT	Nolan	60 min
May 30, 7:25 PM CDT	Severe Thunderstorm Warning	SJT	Sterling	65 min
May 30, 7:30 PM CDT	Severe Thunderstorm Warning	SJT	Taylor	60 min
May 30, 7:38 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	52 min
May 30, 7:52 PM CDT	Severe Thunderstorm Warning	SJT	Coke	68 min
May 30, 8:26 PM CDT	Severe Thunderstorm Warning	SJT	Runnels	64 min
May 30, 8:31 PM CDT	Severe Thunderstorm Warning	SJT	Taylor	59 min
May 30, 8:34 PM CDT	Severe Thunderstorm Warning	SJT	Sterling	56 min
May 30, 8:47 PM CDT	Severe Thunderstorm Warning	SJT	Coleman	58 min
May 30, 9:00 PM CDT	Severe Thunderstorm Warning	SJT	Coke	60 min
May 30, 10:00 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	60 min
May 30, 10:12 PM CDT	Severe Thunderstorm Warning	SJT	Brown	63 min
May 30, 11:07 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	68 min
May 31, 12:56 AM CDT	Severe Thunderstorm Warning	SJT	Fisher	34 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; the sounding from the Mesonet's radiosonde archive.