Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 9, NWS San Angelo, TX

April 13, 2015Coleman County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 13, 2015, 4:33 PM CDT for Coleman 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: Apr 13, 2015, 4:33 PM CDT (21:33 UTC)
Expired: Apr 13, 2015, 5:15 PM CDT
In force: 42 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Coleman County, TX

The radar

The Dyess AFB radar (KDYX), 87 km from the middle of the area, began a volume at 21:34 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 12:00Z, 9.6 hours before the alert went out and 235 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: 1033 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 595 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 16 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 13, 4:16 PM CDT, 17 minutes earlier.

Area forecast discussion, Apr 13, 4:16 PM CDT, 17 minutes before

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Hazardous weather outlook, Apr 13, 2:25 PM CDT, 2 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
225 PM CDT MON APR 13 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-141930-
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-
225 PM CDT MON APR 13 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING... ALONG AND NORTH OF A MERTZON...SAN ANGELO...BROWNWOOD
LINE. THIS INCLUDES THE CITIES OF ABILENE AND SWEETWATER. LARGE
HAIL AND DAMAGING WINDS ARE THE MAIN THREATS. LOCALIZED FLOODING
IS POSSIBLE DUE TO HEAVY RAINFALL FROM SLOW MOVING THUNDERSTORMS.
THERE IS ALSO A SMALL POTENTIAL FOR A LAND SPOUT...OR BRIEF WEAK
TORNADO.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY NIGHT THROUGH SATURDAY.
A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE WITH LARGE HAIL...
DAMAGING WINDS AND DEADLY LIGHTNING. BUT THERE IS UNCERTAINTY
WITH THE FORECAST TIMING AND COVERAGE WITH THE STORMS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

In the hours before

Special weather statement, Apr 13, 2:41 PM CDT, 1 hour 52 minutes before

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Local storm report, Apr 13, 2:59 PM CDT, 1 hour 34 minutes before

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Special weather statement, Apr 13, 3:03 PM CDT, 1 hour 30 minutes before

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Special weather statement, Apr 13, 3:10 PM CDT, 1 hour 23 minutes before

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Special weather statement, Apr 13, 3:49 PM CDT, 44 minutes before

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Special weather statement, Apr 13, 4:12 PM CDT, 21 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 12, 7:02 PM CDT	Special Weather Statement	SJT	Crockett, Sutton	28 min
Apr 12, 7:06 PM CDT	Special Weather Statement	SJT	Irion, Sterling	54 min
Apr 12, 7:29 PM CDT	Special Weather Statement	SJT	Schleicher, Sutton	46 min
Apr 12, 7:45 PM CDT	Special Weather Statement	SJT	Coke, Irion, Sterling, Tom Green	45 min
Apr 12, 8:16 PM CDT	Special Weather Statement	SJT	Tom Green	44 min
Apr 12, 8:57 PM CDT	Special Weather Statement	SJT	Nolan	33 min
Apr 12, 8:59 PM CDT	Special Weather Statement	SJT	Runnels, Tom Green	46 min
Apr 12, 9:13 PM CDT	Special Weather Statement	SJT	Taylor	47 min
Apr 12, 9:39 PM CDT	Special Weather Statement	SJT	Fisher, Jones, Taylor	51 min
Apr 12, 9:56 PM CDT	Special Weather Statement	SJT	Coleman	49 min
Apr 12, 10:06 PM CDT	Special Weather Statement	SJT	Callahan	54 min
Apr 12, 10:18 PM CDT	Special Weather Statement	SJT	Haskell, Jones, Shackelford, Throckmorton	57 min
Apr 13, 2:22 PM CDT	Special Weather Statement	SJT	Taylor	23 min
Apr 13, 2:41 PM CDT	Special Weather Statement	SJT	Taylor	34 min
Apr 13, 3:03 PM CDT	Special Weather Statement	SJT	Runnels	42 min
Apr 13, 3:10 PM CDT	Special Weather Statement	SJT	Taylor	35 min
Apr 13, 3:49 PM CDT	Special Weather Statement	SJT	Callahan	41 min
Apr 13, 4:09 PM CDT	Flash Flood Watch	SJT	Brown, Callahan, Coke, Coleman, Concho, Fisher and 10 more	6 hr
Apr 13, 4:12 PM CDT	Special Weather Statement	SJT	Coleman	48 min
Apr 13, 5:12 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman	48 min
Apr 13, 5:22 PM CDT	Special Weather Statement	SJT	Coke	23 min
Apr 13, 5:57 PM CDT	Severe Thunderstorm Warning	SJT	Brown	33 min
Apr 13, 6:33 PM CDT	Special Weather Statement	SJT	Brown	27 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; radar from the NEXRAD Level II archive.