Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 78, NWS San Angelo, TX

April 24, 20154 counties in Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 24, 2015, 7:17 PM CDT for 4 counties in Texas. It was in force for 43 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 24, 2015, 7:17 PM CDT (00:17 UTC)
Expired: Apr 24, 2015, 8:00 PM CDT
In force: 43 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Mason County, TX, McCulloch County, TX, Menard County, TX, San Saba 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 24, 2:10 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Del Rio, TX (KDLF), launched 00:00Z, 0.3 hours before the alert went out and 233 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: 2328 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 892 m above ground
0-6 km bulk shear: 76 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: -30 m²/s²
Significant tornado parameter: -0.6
Supercell composite: -3.1

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 Apr 24, 6:57 PM CDT, 20 minutes earlier.

Area forecast discussion, Apr 24, 6:57 PM CDT, 20 minutes before

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Hazardous weather outlook, Apr 24, 2:59 PM CDT, 4 hours 18 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
259 PM CDT FRI APR 24 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-252000-
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-
259 PM CDT FRI APR 24 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS MOST OF WEST
CENTRAL TEXAS THIS AFTERNOON AND TONIGHT. THE MAIN CONCERNS WITH
THESE STORMS WILL BE LARGE HAIL...DAMAGING WINDS...TORNADOES...AND
DANGEROUS LIGHTNING. A TORNADO WATCH IS IN EFFECT FOR MOST OF WEST
CENTRAL TEXAS THROUGH 10 PM.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SCATTERED THUNDERSTORMS...A FEW PERHAPS REACHING SEVERE LEVELS...WILL
AGAIN BE POSSIBLE ACROSS MUCH OF WEST CENTRAL TEXAS SUNDAY THROUGH TUESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NEEDED.

In the hours before

Special weather statement, Apr 24, 6:34 PM CDT, 43 minutes before

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Special weather statement, Apr 24, 6:38 PM CDT, 39 minutes before

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Special weather statement, Apr 24, 6:45 PM CDT, 32 minutes before

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Special weather statement, Apr 24, 7:04 PM CDT, 13 minutes before

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Local storm report, Apr 24, 7:06 PM CDT, 11 minutes before

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Special weather statement, Apr 24, 7:13 PM CDT, 4 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 24, 7:04 PM CDT	Special Weather Statement	SJT	McCulloch	26 min
Apr 24, 7:13 PM CDT	Special Weather Statement	SJT	San Saba	32 min
Apr 24, 7:44 PM CDT	Special Weather Statement	SJT	Mason	31 min
Apr 24, 7:54 PM CDT	Special Weather Statement	SJT	San Saba	51 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.