Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 147, NWS San Angelo, TX

April 30, 2007Tom Green County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 30, 2007, 2:34 PM CDT for Tom Green County, Texas. It was in force for 26 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 30, 2007, 2:34 PM CDT (19:34 UTC)
Expired: Apr 30, 2007, 3:00 PM CDT
In force: 26 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Tom Green County, TX

The radar

The San Angelo radar (KSJT), 5 km from the middle of the area, began a volume at 19:36 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

Midland Regional, TX (KMAF), launched 12:00Z, 7.6 hours before the alert went out and 175 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: 23 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 972 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 30, 12:52 PM CDT, 1 hour 42 minutes earlier.

Area forecast discussion, Apr 30, 12:52 PM CDT, 1 hour 42 minutes before

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Hazardous weather outlook, Apr 30, 5:33 AM CDT, 9 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
533 AM CDT MON APR 30 2007

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-011045-
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-
533 AM CDT MON APR 30 2007

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

.DAY ONE...TODAY AND TONIGHT

A LARGE COMPLEX OF THUNDERSTORMS WILL CONTINUE TO MOVE SLOWLY EAST
AND SOUTHEAST ACROSS WEST CENTRAL TEXAS. THESE STORM MAY CONTINUE
TO PRODUCE LOCALLY HEAVY RAINFALL...AND THERE REMAINS A POTENTIAL
OF FLASH FLOODING INTO THE MORNING HOURS. IN ADDITION...SCATTERED
THUNDERSTORMS MAY REDEVELOP DURING THE AFTERNOON...PERHAPS REACHING
SEVERE LEVELS. LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ANOTHER UPPER LEVEL STORM SYSTEM WILL APPROACH WEST CENTRAL TEXAS
FOR WEDNESDAY OR THURSDAY...PRODUCING ANOTHER ROUND OF SHOWERS OR
THUNDERSTORMS. GIVEN THE SATURATED SOILS...AND THE POSSIBILITY OF
MORE HEAVY RAINFALL...FLASH FLOODING WILL BE THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...

07

In the hours before

Special weather statement, Apr 30, 9:32 AM CDT, 5 hours 2 minutes before

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Local storm report, Apr 30, 10:34 AM CDT, 4 hours 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 29, 8:02 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan	43 min
Apr 29, 8:45 PM CDT	Severe Thunderstorm Warning	SJT	Nolan, Taylor	30 min
Apr 29, 9:15 PM CDT	Severe Thunderstorm Warning	SJT	Taylor	60 min
Apr 29, 9:24 PM CDT	Severe Thunderstorm Warning	SJT	Callahan	51 min
Apr 29, 10:06 PM CDT	Flash Flood Warning	SJT	Callahan, Jones, Shackelford, Taylor	3 hr
Apr 29, 10:15 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	60 min
Apr 29, 10:29 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	46 min
Apr 29, 10:34 PM CDT	Severe Thunderstorm Warning	SJT	Taylor	56 min
Apr 29, 10:43 PM CDT	Severe Thunderstorm Warning	SJT	Coke	47 min
Apr 29, 11:00 PM CDT	Severe Thunderstorm Warning	SJT	Nolan	60 min
Apr 29, 11:09 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Runnels	51 min
Apr 29, 11:32 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	58 min
Apr 29, 11:43 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Runnels	47 min
Apr 30, 12:10 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Taylor	35 min
Apr 30, 12:30 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	60 min
Apr 30, 12:48 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	27 min
Apr 30, 4:06 PM CDT	Flash Flood Watch	SJT	Callahan, Fisher, Haskell, Jones, Nolan, Shackelford and 2 more	16 hr
Apr 30, 5:41 PM CDT	Severe Thunderstorm Warning	SJT	Runnels	34 min
Apr 30, 5:54 PM CDT	Flash Flood Warning	SJT	Runnels	3 hr
Apr 30, 6:01 PM CDT	Severe Thunderstorm Warning	SJT	Concho	29 min
Apr 30, 6:16 PM CDT	Severe Thunderstorm Warning	SJT	Runnels	29 min
Apr 30, 6:33 PM CDT	Severe Thunderstorm Warning	SJT	Coleman	57 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007 Every severe thunderstorm warning in 2007

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.