Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 324, NWS San Angelo, TX

June 20, 2007Concho County, Tom Green County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Jun 20, 2007, 5:18 AM CDT for Concho County, Tom Green County, Texas. It was in force for 42 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: Jun 20, 2007, 5:18 AM CDT (10:18 UTC)
Expired: Jun 20, 2007, 6:00 AM CDT
In force: 42 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

Counties Concho County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 31 km from the middle of the area, began a volume at 10:19 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

Fort Worth, TX (KFWD), launched 00:00Z, 10.3 hours before the alert went out and 316 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: 3576 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1390 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: 27 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 Jun 20, 5:09 AM CDT, 9 minutes earlier.

Area forecast discussion, Jun 20, 5:09 AM CDT, 9 minutes before

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Hazardous weather outlook, Jun 19, 3:13 PM CDT, 14 hours 5 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
313 PM CDT TUE JUN 19 2007

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-202015-
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-
313 PM CDT TUE JUN 19 2007

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

ALTHOUGH A VERY UNSTABLE AIR MASS CONTINUES ACROSS WEST CENTRAL
TEXAS THIS AFTERNOON...VERY WARM TEMPERATURES IN THE MID LEVELS OF
THE ATMOSPHERE HAS PREVENTED THUNDERSTORM FORMATION ACROSS THE AREA.
WITH THIS WARM AIR ALOFT EXPECTED TO HOLD THROUGH THE EVENING...NO
HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Special weather statement, Jun 20, 3:54 AM CDT, 1 hour 24 minutes before

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Special weather statement, Jun 20, 4:26 AM CDT, 52 minutes before

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Special weather statement, Jun 20, 4:29 AM CDT, 49 minutes before

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Special weather statement, Jun 20, 4:46 AM CDT, 32 minutes before

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Special weather statement, Jun 20, 5:02 AM CDT, 16 minutes before

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Special weather statement, Jun 20, 5:04 AM CDT, 14 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
Jun 20, 1:46 AM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	59 min
Jun 20, 2:19 AM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	41 min
Jun 20, 2:44 AM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	46 min
Jun 20, 2:46 AM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	44 min
Jun 20, 2:54 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Taylor	66 min
Jun 20, 3:06 AM CDT	Severe Thunderstorm Warning	SJT	Shackelford	24 min
Jun 20, 3:30 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	60 min
Jun 20, 4:18 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	42 min
Jun 20, 5:27 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman, McCulloch, San Saba	63 min
Jun 20, 5:30 AM CDT	Severe Thunderstorm Warning	SJT	Crockett, Irion, Menard, Schleicher	60 min
Jun 20, 6:29 AM CDT	Severe Thunderstorm Warning	SJT	Crockett, Schleicher, Sutton	61 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.