Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 31, NWS San Angelo, TX

April 16, 2015Shackelford County, Throckmorton County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 16, 2015, 7:10 PM CDT for Shackelford County, Throckmorton County, Texas. It was in force for 39 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 16, 2015, 7:10 PM CDT (00:10 UTC)
Expired: Apr 16, 2015, 7:49 PM CDT
In force: 39 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Shackelford County, TX, Throckmorton County, TX

The radar

The Dyess AFB radar (KDYX), 47 km from the middle of the area, began a volume at 00:16 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 16, 4:40 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 0.2 hours before the alert went out and 296 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: 1094 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1903 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 58 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 16, 6:45 PM CDT, 25 minutes earlier.

Area forecast discussion, Apr 16, 6:45 PM CDT, 25 minutes before

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Hazardous weather outlook, Apr 16, 2:19 PM CDT, 4 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
219 PM CDT THU APR 16 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-171930-
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-
219 PM CDT THU APR 16 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT
ACROSS ALL OF WEST CENTRAL TEXAS. A FEW OF THESE STORMS COULD
BECOME SEVERE WITH THE MAIN HAZARDS BEING LARGE HAIL...DAMAGING
WINDS AND DEADLY LIGHTNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

ADDITIONAL THUNDERSTORMS ARE POSSIBLE FRIDAY AND SATURDAY ACROSS
MOST OF THE AREA. SOME OF THESE STORMS MAY ALSO BECOME SEVERE WITH
THE MAIN HAZARDS BEING LARGE HAIL...DAMAGING WINDS...AND DEADLY
LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON THROUGH LATE
EVENING...AND AGAIN ON FRIDAY.

In the hours before

Special weather statement, Apr 16, 6:29 PM CDT, 41 minutes before

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Special weather statement, Apr 16, 6:48 PM CDT, 22 minutes before

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Special weather statement, Apr 16, 6:49 PM CDT, 21 minutes before

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Special weather statement, Apr 16, 6:54 PM CDT, 16 minutes before

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Special weather statement, Apr 16, 6:56 PM CDT, 14 minutes before

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Local storm report, Apr 16, 7:08 PM CDT, 2 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 16, 7:11 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	49 min
Apr 16, 7:17 PM CDT	Special Weather Statement	SJT	Nolan	28 min
Apr 16, 7:20 PM CDT	Areal Flood Advisory	SJT	Haskell, Shackelford, Throckmorton	115 min
Apr 16, 7:26 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	49 min
Apr 17, 10:10 AM CDT	Special Weather Statement	SJT	Fisher, Jones	35 min
Apr 17, 10:11 AM CDT	Special Weather Statement	SJT	Schleicher	49 min
Apr 17, 10:20 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	40 min
Apr 17, 10:30 AM CDT	Special Weather Statement	SJT	Sutton	45 min
Apr 17, 10:45 AM CDT	Special Weather Statement	SJT	Haskell	30 min
Apr 17, 10:53 AM CDT	Special Weather Statement	SJT	Tom Green	52 min
Apr 17, 11:02 AM CDT	Special Weather Statement	SJT	Jones	58 min
Apr 17, 11:08 AM CDT	Special Weather Statement	SJT	Schleicher, Sutton	52 min
Apr 17, 11:18 AM CDT	Areal Flood Advisory	SJT	Concho, Crockett, Irion, Runnels, Schleicher, Sutton and 1 more	117 min
Apr 17, 11:21 AM CDT	Special Weather Statement	SJT	Haskell	24 min
Apr 17, 11:23 AM CDT	Severe Thunderstorm Warning	SJT	Haskell	32 min
Apr 17, 11:25 AM CDT	Severe Thunderstorm Warning	SJT	Tom Green	35 min
Apr 17, 11:50 AM CDT	Special Weather Statement	SJT	Haskell, Throckmorton	55 min
Apr 17, 12:01 PM CDT	Flash Flood Warning	SJT	Tom Green	3 hr
Apr 17, 12:11 PM CDT	Special Weather Statement	SJT	Taylor	64 min
Apr 17, 12:12 PM CDT	Areal Flood Advisory	SJT	Coke, Runnels	93 min
Apr 17, 12:28 PM CDT	Special Weather Statement	SJT	Jones, Shackelford	62 min
Apr 17, 12:35 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	40 min
Apr 17, 12:46 PM CDT	Areal Flood Advisory	SJT	Schleicher, Sutton	119 min
Apr 17, 12:56 PM CDT	Special Weather Statement	SJT	Throckmorton	34 min
Apr 17, 12:59 PM CDT	Flash Flood Warning	SJT	Taylor	2 hr
Apr 17, 1:04 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	41 min
Apr 17, 1:21 PM CDT	Special Weather Statement	SJT	Nolan	39 min
Apr 17, 1:30 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	45 min
Apr 17, 1:36 PM CDT	Areal Flood Advisory	SJT	Jones, Shackelford, Throckmorton	114 min
Apr 17, 1:57 PM CDT	Special Weather Statement	SJT	Jones, Shackelford	33 min
Apr 17, 2:16 PM CDT	Areal Flood Advisory	SJT	Kimble, Mason	119 min
Apr 17, 2:36 PM CDT	Special Weather Statement	SJT	Haskell	24 min
Apr 17, 2:55 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	35 min
Apr 17, 3:07 PM CDT	Flash Flood Warning	SJT	Taylor	53 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.