Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 134, NWS San Angelo, TX

April 23, 2008Callahan County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 23, 2008, 7:25 PM CDT for Callahan County, Texas. It was in force for 21 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: Apr 23, 2008, 7:25 PM CDT (00:25 UTC)
Expired: Apr 23, 2008, 7:46 PM CDT
In force: 21 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon

County Callahan County, TX

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 23, 3:25 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 0.4 hours before the alert went out and 204 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: 2107 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1136 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 10.9

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 Apr 23, 6:45 PM CDT, 40 minutes earlier.

Area forecast discussion, Apr 23, 6:45 PM CDT, 40 minutes before

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Hazardous weather outlook, Apr 23, 8:31 AM CDT, 10 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
831 AM CDT WED APR 23 2008

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-241345-
FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO-
CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD-
TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE-
MASON-
831 AM CDT WED APR 23 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...TODAY AND TONIGHT
A WEAK COLD FRONT HAS STALLED JUST NORTH OF INTERSTATE 20 ACROSS
THE BIG COUNTRY...THIS COMBINED WITH AN APPROACHING UPPER LEVEL
DISTURBANCE WILL BRING A GOOD CHANCE FOR SHOWERS AND
THUNDERSTORMS TODAY TO WEST CENTRAL TEXAS. ONE ROUND OF STORMS IS
ONGOING THIS MORNING...WITH THE POTENTIAL FOR MAINLY LARGE HAIL.
AFTER A BREAK...A SECOND ROUND OF STORMS IS POSSIBLE LATE THIS
AFTERNOON INTO THIS EVENING ALONG AN APPROACHING DRYLINE...WITH
THE POTENTIAL FOR VERY LARGE HAIL AND PERHAPS ISOLATED TORNADOES.
THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS THE BIG
COUNTRY THROUGH THIS EVENING...WITH A SLIGHT RISK ACROSS THE
REMAINDER OF WEST CENTRAL TEXAS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
ANOTHER COLD FRONT WILL MOVE SOUTH ACROSS WEST CENTRAL TEXAS ON
FRIDAY ..BRINGING ANOTHER CHANCE FOR SHOWERS AND
THUNDERSTORMS...WITH THE BEST CHANCE ALONG AND EAST OF A BROWNWOOD
TO JUNCTION LINE.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MOST LIKELY WILL BE NEEDED TODAY AND EVENING.

In the hours before

Local storm report, Apr 23, 5:27 PM CDT, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
527 PM CDT WED APR 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0510 PM     TSTM WND DMG     LUEDERS                 32.80N 99.62W
04/23/2008                   JONES              TX   FIRE DEPT/RESCUE

            SEVERAL BUILDINGS WITH MODERATE DAMAGE.

&&

11

Local storm report, Apr 23, 5:38 PM CDT, 1 hour 47 minutes before

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Local storm report, Apr 23, 5:45 PM CDT, 1 hour 40 minutes before

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Local storm report, Apr 23, 5:55 PM CDT, 1 hour 30 minutes before

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Special weather statement, Apr 23, 5:59 PM CDT, 1 hour 26 minutes before

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Local storm report, Apr 23, 6:53 PM CDT, 32 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
Apr 23, 7:04 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	26 min
Apr 23, 7:08 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford, Taylor	37 min
Apr 23, 7:41 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	34 min
Apr 23, 9:03 PM CDT	Severe Thunderstorm Warning	SJT	Brown	32 min

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm warning in 2008

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.