Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 276, NWS San Angelo, TX

May 28, 20154 counties in Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 28, 2015, 4:52 PM CDT for 4 counties in Texas. It was in force for 38 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 28, 2015, 4:52 PM CDT (21:52 UTC)
Expired: May 28, 2015, 5:30 PM CDT
In force: 38 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Haskell County, TX, Jones County, TX, Shackelford County, TX, Throckmorton County, TX

The radar

The Dyess AFB radar (KDYX), 54 km from the middle of the area, began a volume at 21:55 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 28, 12:44 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 9.9 hours before the alert went out and 273 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: 2845 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 630 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.0

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 May 28, 3:13 PM CDT, 1 hour 39 minutes earlier.

Area forecast discussion, May 28, 3:13 PM CDT, 1 hour 39 minutes before

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Hazardous weather outlook, May 28, 1:04 PM CDT, 3 hours 48 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
104 PM CDT THU MAY 28 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-291100-
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-
104 PM CDT THU MAY 28 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON ACROSS WEST CENTRAL TEXAS...CONTINUING INTO THE OVERNIGHT
HOURS. THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING HAIL UP TO
THE SIZE OF BASEBALLS...DAMAGING WINDS...AND A FEW TORNADOES. A
TORNADO WATCH IS IN EFFECT FOR MUCH OF THE BIG COUNTRY...CONCHO
VALLEY...AND EDWARDS PLATEAU THROUGH 8 PM.

THE SEVERE WEATHER THREAT WILL LIKELY TRANSITION TO A HEAVY
RAINFALL EPISODE OVERNIGHT...WITH THE POTENTIAL FOR FLASH
FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FROM 5 PM TODAY TO 7 AM
FRIDAY.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THUNDERSTORMS WILL CONTINUE THROUGH SATURDAY. A FEW STRONG TO
MARGINALLY SEVERE THUNDERSTORMS WILL BE POSSIBLE WITH HAIL AND
GUSTY WINDS. HEAVY RAIN WILL BE POSSIBLE FRIDAY NIGHT AND
SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON AND EVENING.

JOHNSON

In the hours before

Special weather statement, May 28, 3:20 PM CDT, 1 hour 32 minutes before

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Special weather statement, May 28, 3:45 PM CDT, 1 hour 7 minutes before

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Special weather statement, May 28, 4:18 PM CDT, 34 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 27, 7:02 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Concho, Runnels, Tom Green	28 min
May 27, 7:25 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Runnels, Tom Green	35 min
May 27, 8:07 PM CDT	Special Weather Statement	SJT	Shackelford	38 min
May 27, 8:40 PM CDT	Special Weather Statement	SJT	Shackelford	35 min
May 28, 4:20 AM CDT	Flash Flood Watch	SJT	Brown, Callahan, Coke, Coleman, Concho, Crockett and 18 more	21 hr
May 28, 3:20 PM CDT	Special Weather Statement	SJT	Fisher	25 min
May 28, 3:45 PM CDT	Special Weather Statement	SJT	Fisher	30 min
May 28, 4:18 PM CDT	Special Weather Statement	SJT	Haskell	42 min
May 28, 4:33 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	42 min
May 28, 4:41 PM CDT	Areal Flood Advisory	SJT	Fisher, Haskell, Jones	2 hr
May 28, 5:02 PM CDT	Special Weather Statement	SJT	Fisher	28 min
May 28, 5:27 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford, Throckmorton	48 min
May 28, 5:28 PM CDT	Areal Flood Advisory	SJT	Shackelford, Throckmorton	2 hr
May 28, 5:33 PM CDT	Special Weather Statement	SJT	Fisher, Jones	42 min
May 28, 5:35 PM CDT	Special Weather Statement	SJT	Callahan	40 min
May 28, 6:00 PM CDT	Special Weather Statement	SJT	Nolan, Taylor	45 min
May 28, 6:13 PM CDT	Special Weather Statement	SJT	Upton	47 min
May 28, 6:15 PM CDT	Special Weather Statement	SJT	Callahan, Shackelford, Taylor	60 min
May 28, 6:20 PM CDT	Areal Flood Advisory	SJT	Callahan, Fisher, Jones, Nolan, Taylor	115 min
May 28, 6:20 PM CDT	Special Weather Statement	SJT	Irion, Sterling	25 min
May 28, 6:27 PM CDT	Flash Flood Warning	SJT	Throckmorton	2 hr
May 28, 6:33 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Sterling, Tom Green	42 min
May 28, 6:41 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	64 min
May 28, 6:44 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Sterling, Taylor	46 min
May 28, 6:54 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman, Runnels, Shackelford, Taylor	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; radar from the NEXRAD Level II archive.