Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 94, NWS San Angelo, TX

May 9, 2003Sterling County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 9, 2003, 9:20 AM CDT for Sterling 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 counties it named.

The facts

Issued: May 9, 2003, 9:20 AM CDT (14:20 UTC)
Expired: May 9, 2003, 10:00 AM CDT
In force: 40 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Sterling County, TX

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 2.3 hours before the alert went out and 109 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: 4389 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

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 9, 4:30 AM CDT, 4 hours 50 minutes earlier.

Area forecast discussion, May 9, 4:30 AM CDT, 4 hours 50 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION...CORRECTION
NATIONAL WEATHER SERVICE SAN ANGELO TX
430 AM CDT FRI MAY 9 2003

.CURRENT...SURFACE OBSERVATIONS AND SATELLITE IMAGERY DEPICT DRYLINE
ROUGHLY ALONG A LINE FROM RANKIN AND SAN ANGELO...TO ABILENE AND
THROCKMORTON. DRYLINE HAS MOVED VERY LITTLE SO FAR TONIGHT...
PRIMARILY DUE TO VEERING WIND PROFILES IN WAKE OF POTENT UPPER LOW
NOW LIFTING INTO SOUTHERN MINNESOTA. BUT WITH THE STRONG UPPER LOW
OVER CENTRAL NEVADA DIGGING TOWARD THE FOUR CORNERS...EXPECT THE
FLOW TO BACK THROUGH THE MORNING HOURS. THIS IN TURN WILL PUSH THE
DRYLINE INTO MY WESTERN COUNTIES (SEE ISC GRIDS FOR DETAILS).

.TODAY-TONIGHT...DRYLINE WILL BEGIN PUSHING EAST AGAIN DURING THE
AFTERNOON HOURS. RUC40 AND MESOETA ADVERTISING 3000 J/KG CAPES EAST
OF THE DRYLINE THROUGH 06Z SATURDAY. CIN VALUES ALSO DROP TO LESS
THAN 20 J/KG...BUT DATA DECEIVING. MID LEVEL TEMPERATURES LOOK AWFUL
WARM SOUTH HALF TODAY AND TONIGHT WHICH WILL LIMIT THUNDER
POTENTIAL...IF NOT SQUASH IT ALL TOGETHER. CAP NOT AS STRONG OVER
THE BIG COUNTRY...SO THUNDER POTENTIAL GREATER. LOW LEVEL JET COULD
ACT TO SUSTAIN ISOLATED THUNDERSTORMS INTO THE OVERNIGHT HOURS. BULK
OF DYNAMICS ASSOCIATED WITH FOUR CORNERS UPPER LOW TO REMAIN WELL
NORTH OF AREA.

.SATURDAY-SATURDAY NIGHT...PERHAPS A FEW THUNDERSTORMS ALONG THE
DRYLINE FAR EAST SATURDAY MORNING. WEST WINDS THEN BRING IN DRIER
AIR SATURDAY AFTERNOON. WEAK COLD FRONT DROPS THROUGH THE FORECAST
AREA SATURDAY NIGHT WITH LITTLE FANFARE SINCE MOISTURE STARVED.
COMFORTABLE SLEEPING WEATHER SATURDAY NIGHT AS DRIER AIR ALLOWS
READINGS TO DIP INTO THE 50S.

.SUNDAY-MONDAY...COLD FRONT EXPECTED TO STALL ACROSS SOUTH TEXAS
EARLY SUNDAY. IT THEN BEGINS TO LIFT SLOWLY NORTH (WARM FRONT)...
PERHAPS REACHING A SAN ANGELO TO SAN SABA LINE BY 00Z TUESDAY.
STRONG SOUTHEAST FLOW TO THROW COPIOUS GULF MOISTURE OVER SAID
BOUNDARY...WHILE A SERIES OF UPPER LEVEL DISTURBANCES TRAVERSES
THE FORECAST AREA IN FAST ZONAL FLOW. OVERRUNNING SCENARIO SHOULD
BRING ISOLATED THUNDERSTORMS TO THE EDWARDS PLATEAU AND THE
NORTHWEST HILL COUNTRY SUNDAY AFTERNOON. FOR SUNDAY NIGHT AND
MONDAY...SCATTERED THUNDERSTORMS A GOOD BET ACROSS THE ENTIRE
FORECAST AREA...WHICH IS GOOD NEWS FOR THIS RAIN STARVED REGION.

.TUESDAY-THURSDAY...ACTIVE NORTHWEST FLOW ALOFT AND MEANDERING
FRONTAL BOUNDARY PROMISES TO BRING MORE RAIN FOR TUESDAY AND
WEDNESDAY. HIGH PRESSURE AT THE SURFACE AND ALOFT SHOULD DRY
THINGS OUT BY THURSDAY.

CCF...

ABI 096/070/088/053  2200
SJT 098/069/092/055  1100
JCT 096/074/088/060  1100

.SJT...NONE.

17

Hazardous weather outlook, May 9, 5:32 AM CDT, 3 hours 48 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-101030-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
532 AM CDT FRI MAY 9 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL TEXAS.

.DAY ONE...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING...GENERALLY NORTH AND EAST OF A SWEETWATER TO BALLINGER AND
BROWNWOOD LINE. THE DRYLINE REMAINS NEARLY STATIONARY ACROSS WEST
CENTRAL TEXAS THIS MORNING. THE DRYLINE IS EXPECTED TO MOVE A LITTLE
FURTHER TO THE WEST THIS MORNING...WITH THE APPROACH OF AN UPPER
LEVEL DISTURBANCE CURRENTLY OVER NEVADA. THE DRYLINE WILL THEN MOVE
BACK TO THE EAST THIS AFTERNOON AND MAY PRODUCE THUNDERSTORMS THIS
AFTERNOON...ESPECIALLY OVER THE BIG COUNTRY AND NORTHERN PORTIONS OF
THE HEARTLAND WHERE THE CAP WILL BE THE WEAKEST. FURTHER TO THE
SOUTH...IT APPEARS THAT THE CAP WILL BE TO STRONG FOR THUNDERSTORM
DEVELOPMENT. IF THUNDERSTORMS CAN DEVELOP THIS AFTERNOON...THERE IS
ENOUGH INSTABILITY AND SHEAR FOR THE DEVELOPMENT OF SUPERCELLS
PRODUCING LARGE HAIL AND DAMAGING WINDS. AN ISOLATED TORNADO IS ALSO
POSSIBLE.

.DAYS TWO THROUGH SEVEN...

SEVERE THUNDERSTORMS WILL BE POSSIBLE MONDAY AND TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED GIVEN THUNDERSTORM DEVELOPMENT
OVER THE BIG COUNTRY AND HEARTLAND THIS AFTERNOON AND EVENING.

27/BRAZZELL

In the hours before

Local storm report, May 9, 9:18 AM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
0918 AM CDT FRI MAY 09 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0840 AM    5 NW STERLING CITY        TX   1.75 IN HAIL
05/09/03   STERLING

25

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 8:17 AM CDT	Severe Thunderstorm Warning	SJT	Sterling	43 min
May 9, 8:58 AM CDT	Severe Thunderstorm Warning	SJT	Coke	47 min
May 9, 10:31 AM CDT	Severe Thunderstorm Warning	SJT	Nolan	59 min
May 9, 12:42 PM CDT	Severe Thunderstorm Warning	SJT	Fisher	33 min
May 9, 5:24 PM CDT	Tornado Warning	SJT	Crockett	66 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every severe thunderstorm warning in 2003

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.