Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 7, NWS San Angelo, TX

March 19, 2002Tom Green County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Mar 19, 2002, 12:26 PM CST for Tom Green County, Texas. It was in force for 34 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 19, 2002, 12:26 PM CST (18:26 UTC)
Expired: Mar 19, 2002, 1:00 PM CST
In force: 34 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Tom Green 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

Midland Regional, TX (KMAF), launched 12:00Z, 6.4 hours before the alert went out and 146 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: 18 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 2043 m above ground
0-6 km bulk shear: 93 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSJT 191826
SVRSJT
TXC451-191900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1226 PM CST TUE MAR 19 2002

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TOM GREEN COUNTY IN SOUTHWEST TEXAS

* UNTIL 100 PM CST

* AT 1222 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 13 MILES SOUTHWEST OF CARLSBAD...OR ABOUT 14
  MILES NORTH OF MERTZON...MOVING NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   CARLSBAD AT 1235 PM CST
   WATER VALLEY AT 1240 PM CST

LAT...LON 3155 10084 3154 10064 3169 10048 3170 10076

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 19, 3:05 AM CST, 9 hours 21 minutes earlier.

Area forecast discussion, Mar 19, 3:05 AM CST, 9 hours 21 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
305 AM CST TUE MAR 19 2002

PRIMARY FEATURES OF CONCERN THIS MORNING INCLUDE NEARLY STATIONARY
FRONTAL BOUNDARY EXTENDING FROM SW TO NE FROM SOUTHEASTERN CWA INTO
ARK AHEAD OF APPROACHING UPPER LEVEL TROUGH EXTENDING NE FROM UPPER
LEVEL LOW OVER NW MEXICO.  THUNDERSTORMS HAVE BEEN FIRING ALONG AND
NORTH OF THE FRONTAL BOUNDARY MUCH OF THE NIGHT. EXPECT CONTINUATION
OF THUNDERSTORM ACTIVITY THROUGH TODAY AND INTO THE EVENING WITH
EXPECTED STRONG CONVERGENCE ALONG A DEVELOPING FRONTAL BOUNDARY
COMBINED WITH GOOD SYNOPTIC SCALE LIFTING AS UPPER TROUGH
APPROACHES... HAVE BUMPED POPS UP ACCORDINGLY. LATEST MESOETA HAS
CENTER OF UPPER LOW PASSING THROUGH CWA TONIGHT BEFORE OPENING AND
LIFTING NE OUT OF THE AREA.

WARMING TEMPS ON TAP INTO THE WEEKEND WITH A CHANCE OF PRECIP THE
FIRST OF NEXT WEEK AHEAD OF THE NEXT SYSTEM... BUT WILL FOREGO
MENTIONING CHANCE OF PRECIP ATTM.

ABI 064/043/062/040 9500
SJT 065/044/064/039 8500
JCT 068/046/065/038 9600

.SJT...NONE.

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 8:50 PM CST	Severe Thunderstorm Warning	SJT	Crockett, Irion	40 min
Mar 19, 3:43 AM CST	Severe Thunderstorm Warning	SJT	Kimble	32 min
Mar 19, 4:17 AM CST	Severe Thunderstorm Warning	SJT	Mason, Menard	28 min
Mar 19, 8:38 AM CST	Severe Thunderstorm Warning	SJT	Crockett	52 min
Mar 19, 9:37 AM CST	Severe Thunderstorm Warning	SJT	Schleicher	53 min
Mar 19, 12:16 PM CST	Severe Thunderstorm Warning	SJT	Irion	29 min
Mar 19, 12:39 PM CST	Severe Thunderstorm Warning	SJT	Irion	36 min
Mar 19, 1:04 PM CST	Severe Thunderstorm Warning	SJT	Tom Green	56 min
Mar 19, 1:20 PM CST	Tornado Warning	SJT	Tom Green	40 min
Mar 19, 1:43 PM CST	Flash Flood Warning	SJT	Tom Green	92 min
Mar 19, 1:48 PM CST	Tornado Warning	SJT	Concho, Runnels, Tom Green	57 min
Mar 19, 2:25 PM CST	Severe Thunderstorm Warning	SJT	Sutton	35 min
Mar 19, 2:47 PM CST	Tornado Warning	SJT	Coleman, Runnels	43 min
Mar 19, 3:14 PM CST	Tornado Warning	SJT	Menard, Schleicher	61 min
Mar 19, 4:18 PM CST	Severe Thunderstorm Warning	SJT	McCulloch, Menard	57 min
Mar 19, 4:37 PM CST	Tornado Warning	SJT	McCulloch	53 min
Mar 19, 5:00 PM CST	Flash Flood Warning	SJT	McCulloch	3 hr
Mar 19, 5:15 PM CST	Severe Thunderstorm Warning	SJT	San Saba	60 min
Mar 19, 5:29 PM CST	Flash Flood Warning	SJT	Brown, San Saba	3 hr
Mar 19, 5:34 PM CST	Tornado Warning	SJT	San Saba	41 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every 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.