Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 138, NWS San Angelo, TX

May 11, 2016Mason County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 11, 2016, 12:47 AM CDT for Mason County, 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: May 11, 2016, 12:47 AM CDT (05:47 UTC)
Expired: May 11, 2016, 1:30 AM CDT
In force: 43 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 70.0 mph

County Mason County, TX

The radar

The San Angelo radar (KSJT), 141 km from the middle of the area, began a volume at 05:50 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 (KDLF), launched 00:00Z, 5.8 hours before the alert went out and 216 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: 2298 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1594 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.2

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 10, 11:40 PM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, May 10, 11:40 PM CDT, 1 hour 7 minutes before

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Hazardous weather outlook, May 10, 2:51 PM CDT, 9 hours 56 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
251 PM CDT TUE MAY 10 2016

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-112000-
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-
251 PM CDT TUE MAY 10 2016

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERRSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING
ACROSS MUCH OF WEST CENTRAL TEXAS. SOME STORMS MAY BE SEVERE ALONG
AND EAST OF BAIRD TO MERTZON TO OZONA LINE. THE MAIN HAZARDS WILL
BE VERY LARGE HAIL...LARGER THAN GOLF BALL SIZE...DAMAGING WINDS
AND DANGEROUS LIGHTNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS ARE POSSIBLE ACROSS MUCH OF WEST CENTRAL
TEXAS WEDNESDAY AND THURSDAY. A FEW STORMS MAY BE SEVERE ACROSS
THE BIG COUNTRY WEDNESDAY AND WEDNESDAY NIGHT. THE MAIN HAZARDS
WILL BE LARGE HAIL AND DAMAGING WINDS. FOR THURSDAY...WHILE IT
APPEARS THAT THE THREAT OF WIDESPREAD SEVERE WEATHER REMAINS
RELATIVELY LOW...A FEW THUNDERSTORMS MAY STRENGTHEN TO SEVERE
LEVELS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON AND EVENING.

In the hours before

Local storm report, May 10, 11:47 PM CDT, 1 hour before

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Local storm report, May 10, 11:48 PM CDT, 59 minutes before

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Local storm report, May 10, 11:49 PM CDT, 58 minutes before

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Local storm report, May 10, 11:51 PM CDT, 56 minutes before

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Local storm report, May 10, 11:52 PM CDT, 55 minutes before

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Local storm report, May 10, 11:56 PM CDT, 51 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 10, 7:07 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, San Saba	38 min
May 10, 7:09 PM CDT	Special Weather Statement	SJT	Coleman	51 min
May 10, 7:21 PM CDT	Areal Flood Advisory	SJT	McCulloch, San Saba	3 hr
May 10, 7:25 PM CDT	Severe Thunderstorm Warning	SJT	Menard, Schleicher	52 min
May 10, 7:30 PM CDT	Special Weather Statement	SJT	McCulloch	60 min
May 10, 7:32 PM CDT	Special Weather Statement	SJT	Schleicher	43 min
May 10, 7:47 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	58 min
May 10, 8:16 PM CDT	Special Weather Statement	SJT	Tom Green	44 min
May 10, 8:19 PM CDT	Special Weather Statement	SJT	Menard	26 min
May 10, 8:32 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher, Tom Green	43 min
May 10, 8:42 PM CDT	Areal Flood Advisory	SJT	Schleicher, Tom Green	2 hr
May 10, 8:44 PM CDT	Special Weather Statement	SJT	McCulloch	61 min
May 10, 8:45 PM CDT	Special Weather Statement	SJT	San Saba	60 min
May 10, 8:51 PM CDT	Special Weather Statement	SJT	McCulloch, San Saba	54 min
May 10, 9:18 PM CDT	Special Weather Statement	SJT	Tom Green	42 min
May 10, 9:27 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, San Saba	63 min
May 10, 9:51 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Tom Green	39 min
May 10, 10:05 PM CDT	Special Weather Statement	SJT	Concho	55 min
May 10, 10:21 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, San Saba	54 min
May 10, 10:24 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	30 min
May 10, 10:33 PM CDT	Special Weather Statement	SJT	McCulloch	57 min
May 10, 10:39 PM CDT	Areal Flood Advisory	SJT	McCulloch, San Saba	3 hr
May 10, 10:54 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, Menard	66 min
May 10, 11:35 PM CDT	Special Weather Statement	SJT	Mason	55 min
May 10, 11:52 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason	53 min
May 11, 12:28 AM CDT	Severe Thunderstorm Warning	SJT	Kimble	47 min
May 11, 3:49 AM CDT	Special Weather Statement	SJT	Tom Green	26 min
May 11, 4:47 PM CDT	Special Weather Statement	SJT	Fisher	28 min
May 11, 5:04 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	56 min
May 11, 5:45 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Haskell, Jones	45 min
May 11, 6:15 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	45 min
May 11, 6:42 PM CDT	Tornado Warning	SJT	Shackelford	33 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016 Every severe thunderstorm warning in 2016

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.