Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 101, NWS San Angelo, TX

May 30, 2001Taylor County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 30, 2001, 6:24 PM CDT for Taylor County, Texas. It was in force for 66 min. 7 reports came from 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, with what was reported inside it.

The facts

Issued: May 30, 2001, 6:24 PM CDT (23:24 UTC)
Expired: May 30, 2001, 7:30 PM CDT
In force: 66 min
Issued by: NWS San Angelo, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Taylor County, TX

What was reported inside it

Time	Report	Where	Remark
May 30, 6:25 PM CDT	Thunderstorm Wind 50 M	Abilene, TX	A local tv station recorded a wind gust to 50 knots.
May 30, 6:45 PM CDT	Hail 2	Abilene, TX
May 30, 6:51 PM CDT	Hail 2.75	Abilene, TX	Baseball size hail pounded the eastern sections of Abilene. The area around Abilene Christian University was the hardest hit, with numerous windows broken at the school. Many vehicles were hard hit as well, with windshields broken out and holes punched through
May 30, 7:00 PM CDT	Thunderstorm Wind 60 E	Abilene, TX	A storm spotter estimated winds at 60 knots across the western sides of Abilene.
May 30, 7:04 PM CDT	Hail 1.75	Abilene, TX
May 30, 7:10 PM CDT	Hail 1	Abilene, TX
May 30, 7:40 PM CDT	Hail 2	Potosi, 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
May 30, 5:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.4 hours before the alert went out and 232 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: 2388 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 239 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSJT 302324
SVRSJT
TXC441-310030-

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

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

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

* UNTIL 730 PM CDT

* AT 622 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTHEAST OF ABILENE...MOVING SOUTH AT
  15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   ABILENE AT 645 PM CDT
   POTOSI AT 700 PM CDT

LAT...LON 3250 9965 3250 9981 3229 9981 3229 9965

RUBIN

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, 6:09 PM CDT, 15 minutes earlier.

Area forecast discussion, May 30, 6:09 PM CDT, 15 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

In the hours before

Special weather statement, May 30, 12:47 PM CDT, 5 hours 37 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-311000-

WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
1247 PM CDT WED MAY 30 2001

...THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS NORTHERN
PORTIONS OF THE BIG COUNTRY LATE THIS AFTERNOON AND EVENING...

A COLD FRONT CURRENTLY OVER THE TEXAS AND OKLAHOMA PANHANDLES WILL
CONTINUE TO SLOWLY MOVE SOUTHWARD THROUGH THE DAY. AS AN UPPER LEVEL
DISTURBANCE PHASES WITH THE LOWER LEVEL BOUNDARY BY THIS
EVENING...SUFFICIENT LIFT WILL BE IN PLACE OVER WEST CENTRAL TEXAS.
BY LATE THIS AFTERNOON...AS TEMPERATURES CLIMB AND SOUTHERLY WIND
SPEEDS IN THE LOW LEVELS INCREASE...A MOIST AND VERY UNSTABLE AIRMASS
WILL EXIST.

GIVEN THE DEGREE OF INSTABILITY AND WIND SHEAR...THERE IS A SLIGHT
RISK OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS...SOME LARGE
HAIL...AND ISOLATED TORNADOES...PRIMARILY ALONG AND TO THE NORTH OF A
SAN ANGELO TO BROWNWOOD LINE. GIVEN THE EXPECTED PROXIMITY OF THE
FRONTAL BOUNDARY AND THE BETTER UPPER LEVEL SUPPORT...AN EVEN GREATER
MODERATE RISK OF SEVERE WEATHER WILL EXIST OVER THAT PORTION OF WEST
CENTRAL TEXAS ALONG AND TO THE NORTH OF AN ANSON TO ALBANY LINE.

THUNDERSTORMS WILL LIKELY BEGIN TO DEVELOP BY 4 PM OR 5 PM THIS
AFTERNOON ACROSS NORTHERN AND WESTERN PORTIONS OF THE BIG COUNTRY.
THIS ACTIVITY WILL SPREAD TO THE SOUTH DURING THE EVENING AND WILL
LIKELY REACH THE CONCHO VALLEY BETWEEN 10 PM AND MIDNIGHT. AFTER 2
AM...THE THREAT OF SEVERE WEATHER WILL BEGIN TO DIMINISH AS MORE IN
THE WAY OF A WIDESPREAD RAIN EVENT EVOLVES. IN FACT...WITH THE
INCREASED MOISTURE TRANSPORT THAT IS EXPECTED INTO THE AREA
TONIGHT...VERY HEAVY RAINFALL WILL BE LIKELY WITH LOCALIZED RAINFALL
AMOUNTS OF 1 TO 2 INCHES POSSIBLE.

SPOTTER ACTIVATION WILL LIKELY BE REQUIRED.

FOR THE SOUTHWEST TEXAS AND SOUTHEAST NEW MEXICO OUTLOOK SEE PRODUCT
LBBSPSMAF. FOR THE SOUTH PLAINS OUTLOOK SEE PRODUCT LBBSPSLBB. FOR
THE CENTRAL OKLAHOMA OUTLOOK SEE PRODUCT OKCSPSOKC. FOR THE NORTH
TEXAS OUTLOOK SEE PRODUCT FTWSPSFTW. FOR THE SOUTH CENTRAL TEXAS
OUTLOOK SEE PRODUCT SATSPSSAT.

21

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 4:49 PM CDT	Severe Thunderstorm Warning	SJT	Jones	56 min
May 30, 4:55 PM CDT	Severe Thunderstorm Warning	SJT	Fisher	65 min
May 30, 5:44 PM CDT	Severe Thunderstorm Warning	SJT	Jones	61 min
May 30, 5:59 PM CDT	Severe Thunderstorm Warning	SJT	Fisher	61 min
May 30, 6:10 PM CDT	Severe Thunderstorm Warning	SJT	Nolan	65 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.