Alert archive / Texas / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 227, NWS San Angelo, TX

August 25, 2004Schleicher County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Aug 25, 2004, 6:03 PM CDT for Schleicher County, Texas. It was in force for 57 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: Aug 25, 2004, 6:03 PM CDT (23:03 UTC)
Expired: Aug 25, 2004, 7:00 PM CDT
In force: 57 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Schleicher County, TX

The radar

The San Angelo radar (KSJT), 53 km from the middle of the area, began a volume at 23:05 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 11.1 hours before the alert went out and 172 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: 1971 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 885 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.5

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 Aug 25, 3:51 PM CDT, 2 hours 12 minutes earlier.

Area forecast discussion, Aug 25, 3:51 PM CDT, 2 hours 12 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
351 PM CDT WED AUG 25 2004

.SHORT TERM...
RADAR SHOWING SHOWERS AND THUNDERSTORMS DEVELOPING OVER SOUTHWESTERN
COUNTIES AS A SHORTWAVE TROUGH CONTINUES TO PUSH ACROSS WEST CENTRAL
TEXAS.  EXPECT THIS ACTIVITY TO CONTINUE THROUGH THE EVENING SO HAVE
INCREASED PRECIP CHANCES ACROSS THE AREA FOR TONIGHT.  ALTHOUGH
INSTABILITY IS NOT GREAT...WE COULD SEE A FEW STRONG STORMS EARLY
THIS EVENING. AFTER STORMS DECREASE LATER TONIGHT...WILL SEE CLOUDY
SKIES TOWARD MORNING ANDLOW TEMPERATURES IN THE LOWER 760S WITH
HIGHER DEWPOINTS ACROSS THE AREA.

&&

.LONG TERM...
FOR TOMORROW...SHOULD SEE A LESS CHANCE OF RAIN AS THE UPPER TROUGH
MOVES TO THE EAST.  WITH LESS CLOUD COVER...TEMPERATURES TOMORROW
SHOULD BE A COUPLE DEGREES WARMER.  THE BEST CHANCE OF RAIN
COMES SATURDAY AND SUNDAY AS THE NEXT UPPER TROUGH AND COLD FRONT
MOVES ACROSS WEST CENTRAL TEXAS.  MODELS CONTINUE TO SHOW THE FRONT
MOVING THROUGH...SO HAVE CONTINUED THE TREND OF INCREASING PRECIP
CHANCES FOR THE WEEKEND.
&&

.PRELIMINARY POINT TEMPS/POPS...
ABILENE     74  96  75  95 /  30  10  10  20
SAN ANGELO  74  97  74  94 /  30  10  10  10
JUNCTION    74  94  73  93 /  20  10   0   0

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

99/99

Hazardous weather outlook, Aug 25, 2:04 PM CDT, 3 hours 59 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 5:12 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher	48 min
Aug 25, 5:12 PM CDT	Severe Thunderstorm Warning	SJT	Concho	63 min
Aug 25, 5:19 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	56 min
Aug 25, 6:14 PM CDT	Severe Thunderstorm Warning	SJT	Concho	61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2004 Every severe thunderstorm warning in 2004

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; radar from the NEXRAD Level II archive.