Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 151, NWS San Angelo, TX

May 9, 2015Callahan County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 9, 2015, 3:42 PM CDT for Callahan County, Texas. It was in force for 48 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 9, 2015, 3:42 PM CDT (20:42 UTC)
Expired: May 9, 2015, 4:30 PM CDT
In force: 48 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 60.0 mph

County Callahan County, TX

The radar

The Dyess AFB radar (KDYX), 29 km from the middle of the area, began a volume at 20:43 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
May 9, 1:21 PM CDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.7 hours before the alert went out and 204 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: 1096 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 782 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 4.1

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 9, 11:03 AM CDT, 4 hours 39 minutes earlier.

Area forecast discussion, May 9, 11:03 AM CDT, 4 hours 39 minutes before

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Hazardous weather outlook, May 9, 2:43 PM CDT, 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
243 PM CDT SAT MAY 9 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-101945-
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-
243 PM CDT SAT MAY 9 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS MAINLY THE
EASTERN BIG COUNTRY AND HEARTLAND THIS AFTERNOON AND EVENING. THE
MAIN HAZARDS WILL BE TORNADOES...LARGE HAIL...DAMAGING
WINDS...DEADLY LIGHTNING...AND FLASH FLOODING.

SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE MAINLY AFTER MIDNIGHT
ACROSS ALL OF WEST CENTRAL TEXAS. THE MAIN HAZARDS WILL BE LARGE
HAIL...DAMAGING WINDS...DEADLY LIGHTNING...FLASH FLOODING AND A
FEW TORNADOES.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ON SUNDAY...MAINLY EAST
OF A HASKELL...TO SAN ANGELO...TO OZONA LINE. THE MAIN HAZARDS
WILL BE LARGE HAIL...DAMAGING WINDS...A FEW TORNADOES...DEADLY
LIGHTNING...AND FLASH FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY.

In the hours before

Special weather statement, May 9, 3:11 PM CDT, 31 minutes before

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Special weather statement, May 9, 3:27 PM CDT, 15 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 8, 7:11 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	49 min
May 8, 7:57 PM CDT	Areal Flood Advisory	SJT	Shackelford, Throckmorton	93 min
May 8, 8:08 PM CDT	Special Weather Statement	SJT	Shackelford	37 min
May 8, 8:13 PM CDT	Special Weather Statement	SJT	Haskell	32 min
May 8, 8:33 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	27 min
May 8, 8:46 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	44 min
May 8, 8:51 PM CDT	Special Weather Statement	SJT	Haskell	24 min
May 8, 9:19 PM CDT	Special Weather Statement	SJT	Throckmorton	26 min
May 8, 9:27 PM CDT	Special Weather Statement	SJT	Shackelford	33 min
May 8, 9:41 PM CDT	Special Weather Statement	SJT	Shackelford	34 min
May 8, 9:52 PM CDT	Areal Flood Advisory	SJT	Shackelford	83 min
May 8, 9:58 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	47 min
May 8, 10:20 PM CDT	Flash Flood Warning	SJT	Shackelford	2 hr
May 8, 10:39 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	51 min
May 8, 11:22 PM CDT	Special Weather Statement	SJT	Jones, Throckmorton	23 min
May 8, 11:54 PM CDT	Special Weather Statement	SJT	Shackelford, Throckmorton	36 min
May 9, 12:05 AM CDT	Special Weather Statement	SJT	Haskell	25 min
May 9, 12:36 AM CDT	Special Weather Statement	SJT	Throckmorton	39 min
May 9, 1:52 AM CDT	Special Weather Statement	SJT	Sterling	38 min
May 9, 2:38 AM CDT	Special Weather Statement	SJT	Fisher, Nolan	52 min
May 9, 3:19 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	41 min
May 9, 3:42 AM CDT	Special Weather Statement	SJT	Jones, Nolan, Taylor	63 min
May 9, 4:07 AM CDT	Special Weather Statement	SJT	Haskell	53 min
May 9, 4:35 AM CDT	Special Weather Statement	SJT	Shackelford, Throckmorton	55 min
May 9, 5:31 AM CDT	Special Weather Statement	SJT	Shackelford, Throckmorton	59 min
May 9, 8:15 AM CDT	Special Weather Statement	SJT	Brown, Coleman	45 min
May 9, 3:11 PM CDT	Flash Flood Watch	SJT	Haskell, Jones, Shackelford, Throckmorton	19 hr
May 9, 3:11 PM CDT	Special Weather Statement	SJT	Callahan	34 min
May 9, 3:27 PM CDT	Special Weather Statement	SJT	Throckmorton	33 min
May 9, 3:42 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	48 min
May 9, 3:52 PM CDT	Special Weather Statement	SJT	Shackelford	23 min
May 9, 4:21 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	24 min
May 9, 4:36 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	39 min
May 9, 5:06 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	24 min
May 9, 5:11 PM CDT	Areal Flood Advisory	SJT	Throckmorton	94 min
May 9, 5:28 PM CDT	Special Weather Statement	SJT	Throckmorton	32 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.