Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 169, NWS San Angelo, TX

May 1, 2007Sutton County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 1, 2007, 10:55 PM CDT for Sutton County, Texas. It was in force for 65 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: May 1, 2007, 10:55 PM CDT (03:55 UTC)
Expired: May 2, 2007, 12:00 AM CDT
In force: 65 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Sutton County, TX

The radar

The San Angelo radar (KSJT), 97 km from the middle of the area, began a volume at 03:57 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 00:00Z, 3.9 hours before the alert went out and 129 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: 3942 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1385 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: -18 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

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 May 1, 7:04 PM CDT, 3 hours 51 minutes earlier.

Area forecast discussion, May 1, 7:04 PM CDT, 3 hours 51 minutes before

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Hazardous weather outlook, May 1, 3:04 PM CDT, 7 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
304 PM CDT TUE MAY 1 2007

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-022015-
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-
304 PM CDT TUE MAY 1 2007

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

.DAY ONE...THIS AFTERNOON AND TONIGHT
SCATTERED THUNDERSTORMS WILL REDEVELOP ACROSS WEST CENTRAL TEXAS
THROUGH THIS EVENING...ESPECIALLY ALONG SEVERAL OLD OUTFLOW
BOUNDARIES. THESE BOUNDARIES WILL PROVIDE A FOCUS FOR ADDITIONAL THUNDERSTORM
DEVELOPMENT. ANY STORM THAT DOES DEVELOP WILL HAVE THE POTENTIAL
OF REACHING SEVERE LEVELS...WITH LARGE HAIL AND DAMAGING WINDS THE
MAIN THREATS. HOWEVER...AN ISOLATED TORNADO IS POSSIBLE AS WELL.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
SEVERE STORMS ARE POSSIBLE ON WEDNESDAY AFTERNOON AND CONTINUING
INTO WEDNESDAY NIGHT. A VERY UNSTABLE AIR MASS WILL MOVE BACK INTO
WEST CENTRAL TEXAS...COMBINING WITH AN APPROACHING UPPER LEVEL
STORM SYSTEM...AND SEVERAL OUTFLOW BOUNDARIES TO ENHANCE THE
THREAT OF SEVERE STORMS. SEVERE STORMS MAY RAPIDLY DEVELOP WEDNESDAY
AFTERNOON...WITH VERY LARGE HAIL AND DAMAGING WINDS THE MAIN
THREATS. HOWEVER...ISOLATED TORNADOES WILL ALSO BE POSSIBLE. IN
ADDITION...VERY HEAVY RAINFALL WILL ALSO BE LIKELY WITH THESE
STORMS...WITH FLASH FLOODING A DISTINCT POSSIBILITY.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED LATER THIS AFTERNOON AND THIS
EVENING...AND AGAIN ON WEDNESDAY AFTERNOON AND WEDNESDAY NIGHT.

07

In the hours before

Local storm report, May 1, 6:42 PM CDT, 4 hours 13 minutes before

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Local storm report, May 1, 6:59 PM CDT, 3 hours 56 minutes before

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Special weather statement, May 1, 10:43 PM CDT, 12 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
May 1, 7:40 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Mason	65 min
May 1, 8:43 PM CDT	Severe Thunderstorm Warning	SJT	Kimble	51 min
May 2, 2:01 AM CDT	Severe Thunderstorm Warning	SJT	Crockett	29 min
May 2, 2:29 AM CDT	Severe Thunderstorm Warning	SJT	Crockett	31 min
May 2, 9:08 AM CDT	Flash Flood Watch	SJT	Brown, Callahan, Coke, Coleman, Concho, Crockett and 16 more	13 hr
May 2, 11:53 AM CDT	Tornado Warning	SJT	Irion, Sterling, Tom Green	67 min
May 2, 12:49 PM CDT	Tornado Warning	SJT	Coke, Runnels, Sterling, Tom Green	56 min
May 2, 12:54 PM CDT	Severe Thunderstorm Warning	SJT	Crockett, Irion, Schleicher, Tom Green	66 min
May 2, 12:56 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	64 min
May 2, 1:28 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	47 min
May 2, 1:42 PM CDT	Tornado Warning	SJT	Coke, Runnels, Tom Green	48 min
May 2, 1:55 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Crockett, Irion, Menard, Schleicher, Tom Green	48 min
May 2, 2:05 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	55 min
May 2, 2:09 PM CDT	Tornado Warning	SJT	Coke, Runnels	36 min
May 2, 2:28 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Runnels	32 min
May 2, 2:39 PM CDT	Tornado Warning	SJT	Coleman, Concho, McCulloch	36 min
May 2, 2:41 PM CDT	Tornado Warning	SJT	Callahan, Coleman, Runnels, Taylor	34 min
May 2, 2:54 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Runnels	36 min
May 2, 3:11 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels, Taylor	34 min
May 2, 3:11 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	34 min
May 2, 3:14 PM CDT	Tornado Warning	SJT	Brown, Coleman, McCulloch, San Saba	46 min
May 2, 3:22 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher	38 min
May 2, 3:30 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman, Taylor	60 min
May 2, 3:39 PM CDT	Tornado Warning	SJT	Sutton	51 min
May 2, 3:53 PM CDT	Tornado Warning	SJT	Brown, McCulloch, San Saba	37 min
May 2, 3:54 PM CDT	Tornado Warning	SJT	Menard, Schleicher	36 min
May 2, 4:25 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Menard	35 min
May 2, 4:28 PM CDT	Tornado Warning	SJT	Kimble, Sutton	32 min
May 2, 4:56 PM CDT	Tornado Warning	SJT	Kimble	49 min
May 2, 5:21 PM CDT	Severe Thunderstorm Warning	SJT	Mason, San Saba	54 min
May 2, 5:41 PM CDT	Tornado Warning	SJT	Kimble, Mason	34 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.