Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 23, NWS San Angelo, TX

March 30, 2002San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 30, 2002, 1:53 AM CST for San Saba County, Texas. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 30, 2002, 1:53 AM CST (07:53 UTC)
Expired
Mar 30, 2002, 2:45 AM CST
In force
52 min
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

County San Saba County, TX

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

Fort Worth, TX (KFWD), launched 00:00Z, 7.9 hours before the alert went out and 226 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-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2002-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3168 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2002-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -45 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
3168 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-45 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

798 
WUUS54 KSJT 300753
SVRSJT
TXC411-300845-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
152 AM CST SAT MAR 30 2002

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SAN SABA COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 245 AM CST

* AT 150 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 3 MILES SOUTHWEST OF ELM GROVE...OR ABOUT 13
  MILES NORTHWEST OF RICHLAND SPRINGS...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   SKEETERVILLE AT 205 AM CST

SEVERE THUNDERSTORMS PRODUCE LARGE HAIL...DAMAGING WINDS...DANGEROUS
LIGHTNING...AND VERY HEAVY RAINFALL. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.


LAT...LON 3144 9908 3131 9909 3139 9879 3147 9902

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 Mar 29, 2:40 PM CST, 11 hours 13 minutes earlier.

Area forecast discussion, Mar 29, 2:40 PM CST, 11 hours 13 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
240 PM CST FRI MAR 29 2002

COMPLICATED PATTERN CURRENTLY. COLD FRONT CONTINUES TO SLOW AS IT
DRIFTS SOUTH THROUGH THE BIG COUNTRY AND IS NOW LOCATED JUST SOUTH OF
ABILENE. UPPER LEVEL LOW SPINNING OVER SOUTHERN BORDER BETWEEN AZ AND
NM. WESTERN EDGE OF MOISTURE PLUME ASSOCIATED WITH STJ HAD BISECTED
THE CWA EARLIER... ALLOWING TEMPS TO RISE MORE THAN ANTICIPATED OVER
WESTERN SECTIONS. LATEST VIS LOOP SHOWING LARGE AREA OF DEVELOPING CU
OVER SOUTHWESTERN TX WHERE AFTERNOON TEMPS ROSE TO 90 AND ABOVE UNDER
SUNNY SKIES.

MODELS CONTINUE TO SLOW MOVEMENT OF UPPER LEVEL SYSTEM WITH LATEST
AVN TRACKING THE SYSTEM OVER CWA TOMORROW AFTERNOON. EXPECT COLD
FRONT TO STALL OVER CENTRAL PORTION OF CWA THIS EVENING WITH SURFACE
LOW DEVELOPING OVER WESTERN PORTION OF CWA AND MOVING EAST ALONG THE
FRONTAL BOUNDARY SATURDAY MORNING. NOSE OF 40+KT MID LEVEL JET FCSTD
TO BE IN SW CWA AT MIDNIGHT AND MOVE TO WELL EAST OF CWA BY NOON
SATURDAY. BEST 850-700H DIV Q MOVES QUICKLY EAST OVERNIGHT TO THE
EASTERN PORTION OF CWA BY NOON TOMORROW WHERE TRIPLE POINT WILL BE
LOCATED... THEREFORE LOOKS LIKE AN AFTER MIDNIGHT TO EARLY MORNING
EVENT PRIMARILY. DRYSLOT WILL MOVE INTO THE SOUTHWESTERN COUNTIES
EARLY TOMORROW MORNING WITH RAIN CHANCES ENDING CWA WIDE MY MIDNIGHT
SATURDAY.

NEXT SYSTEM SLATED TO ARRIVE LATE TUESDAY WHICH SHOULD ONLY SERVE AS
A TEMPORARY COOL DOWN ON WEDNESDAY. TEMPS WILL BEGIN TO REBOUND ON
THURSDAY TO NEAR CLIMO BY FRIDAY.

CCF PRELIMS...

ABI 054/062/042/068 3851
SJT 058/069/044/070 4720
JCT 059/071/045/073 4730

.SJT...NONE.

15

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 7:02 PM CSTSevere Thunderstorm WarningSJTFisher, Nolan43 min
Mar 29, 7:45 PM CSTSevere Thunderstorm WarningSJTFisher30 min
Mar 29, 7:52 PM CSTSevere Thunderstorm WarningSJTSterling38 min
Mar 29, 8:11 PM CSTTornado WarningSJTCoke, Sterling49 min
Mar 29, 8:50 PM CSTSevere Thunderstorm WarningSJTCoke, Nolan40 min
Mar 29, 9:06 PM CSTTornado WarningSJTCoke, Nolan24 min
Mar 29, 9:28 PM CSTTornado WarningSJTNolan, Taylor47 min
Mar 29, 9:42 PM CSTSevere Thunderstorm WarningSJTNolan, Taylor48 min
Mar 29, 10:29 PM CSTSevere Thunderstorm WarningSJTCallahan46 min
Mar 29, 10:44 PM CSTSevere Thunderstorm WarningSJTIrion46 min
Mar 29, 11:24 PM CSTSevere Thunderstorm WarningSJTTom Green66 min
Mar 30, 12:55 AM CSTSevere Thunderstorm WarningSJTConcho, McCulloch50 min
Mar 30, 1:06 AM CSTSevere Thunderstorm WarningSJTCrockett54 min
Mar 30, 4:29 AM CSTSevere Thunderstorm WarningSJTTom Green61 min
Mar 30, 12:52 PM CSTTornado WarningSJTCoke53 min
Mar 30, 1:09 PM CSTTornado WarningSJTRunnels51 min
Mar 30, 1:48 PM CSTTornado WarningSJTCoke27 min
Mar 30, 2:00 PM CSTSevere Thunderstorm WarningSJTRunnels60 min
Mar 30, 2:09 PM CSTSevere Thunderstorm WarningSJTBrown21 min
Mar 30, 2:10 PM CSTSevere Thunderstorm WarningSJTNolan, Taylor35 min
Mar 30, 2:19 PM CSTTornado WarningSJTTaylor56 min
Mar 30, 2:52 PM CSTTornado WarningSJTCallahan38 min
Mar 30, 3:04 PM CSTSevere Thunderstorm WarningSJTHaskell56 min
Mar 30, 3:16 PM CSTTornado WarningSJTJones, Taylor59 min
Mar 30, 3:27 PM CSTTornado WarningSJTCallahan33 min
Mar 30, 5:40 PM CSTSevere Thunderstorm WarningSJTThrockmorton35 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every 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; the sounding from the Mesonet's radiosonde archive.