Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 147, NWS San Angelo, TX

May 8, 2015Jones County, Shackelford County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 8, 2015, 8:46 PM CDT for Jones County, Shackelford County, Texas. It was in force for 44 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 8, 2015, 8:46 PM CDT (01:46 UTC)
Expired: May 8, 2015, 9:30 PM CDT
In force: 44 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Jones County, TX, Shackelford County, TX

The radar

The Dyess AFB radar (KDYX), 41 km from the middle of the area, began a volume at 02:03 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 8, 3:50 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.8 hours before the alert went out and 218 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: 1762 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 903 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 12.8

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 8, 6:26 PM CDT, 2 hours 20 minutes earlier.

Area forecast discussion, May 8, 6:26 PM CDT, 2 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
626 PM CDT Fri May 8 2015

.AVIATION...
/00Z TAFS/

Thunderstorms may affect KABI this evening as a thunderstorm
outflow boundary sinks slowly southward. Otherwise MVFR stratus
will return this evening along the I-10 corridor and spread
north after midnight to KSJT and eventually KABI. Stratus should
rise to IFR late morning to early afternoon. Isolated to scattered
afternoon thunderstorms possible Saturday but low confidence on
timing, so did not include in terminals.

&&

.PREV DISCUSSION... /ISSUED 429 PM CDT Fri May 8 2015/

SHORT TERM...
(Tonight and Tomorrow)

..Severe Thunderstorms...

The potential for severe thunderstorms highlights the forecast
for the next 24 hours. With southwest flow aloft over Texas and a
dryline to our west, severe thunderstorms are possible during the
next 24 hours. Most of our Counties are currently under Tornado
Watch number 145, which continues until midnight CDT tonight. In
addition, the 0 to 6 kilometer bulk shear this afternoon is in
the 40 to 60 knots range; plus, surface based CAPEs this afternoon
are around 4000 J/Kg. These conditions clearly have our attention.
With ongoing severe thunderstorms to our northwest, outflow
boundaries from that activity will be a big player, during the
evening hours, for supercell initiation over our counties.

LONG TERM...
(Saturday night through Friday)

..Severe Weather Threat Into Sunday Night...

With the main focus on the short term, the long term forecast
remains essentially unchanged. The upper trough axis will finally
move over and east of our counties Sunday night. Until then, any
thunderstorms, which develop over or move into our counties, may
be severe. The timing of the next front looks more likely for early
to mid day Monday, rather than late Sunday night. Temperatures
after the front still look cooler, at least into mid week. Another
developing upper trough, along the west coast, will help maintain
southwest flow aloft over Texas for most of next week. Thus,
thunderstorms remain in the forecast for all long-term periods.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 68  84  63  80  60 /  30  50  50  50  30
San Angelo 	 69  88  63  81  60 /  30  30  70  50  40
Junction 	 70  83  68  81  64 /  30  40  70  70  60

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

99/99/04

Hazardous weather outlook, May 8, 3:54 PM CDT, 4 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
354 PM CDT FRI MAY 8 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-092100-
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-
354 PM CDT FRI MAY 8 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED SEVERE THUNDERSTORMS ARE POSSIBLE...ESPECIALLY WEST OF
A LINE FROM JUNCTION TO COLEMAN. THE MAIN THREATS THERE ARE
TORNADOES...LARGE HAIL...DAMAGING WINDS...AND DEADLY LIGHTNING.
ELSEWHERE...THE MAIN THREATS ARE LARGE HAIL...DAMAGING WINDS...AND
DEADLY LIGHTNING. ALTHOUGH THE TORNADO THREAT IS NOT HAS
HIGH...EAST OF THIS LINE...A TORNADO IS POSSIBLE. IN
ADDITION...HEAVY RAINFALL MAY PRODUCE FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ORGANIZED SEVERE WEATHER IS POSSIBLE AGAIN ON SATURDAY. SEVERE
WEATHER THREATS INCLUDE DAMAGING WINDS...VERY LARGE HAIL...
TORNADOES...AND LOCALIZED FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON...AND AGAIN ON
SATURDAY.

HUBER

In the hours before

Local storm report, May 8, 7:20 PM CDT, 1 hour 26 minutes before

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Local storm report, May 8, 8:01 PM CDT, 45 minutes before

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Special weather statement, May 8, 8:08 PM CDT, 38 minutes before

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Special weather statement, May 8, 8:13 PM CDT, 33 minutes before

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Local storm report, May 8, 8:15 PM CDT, 31 minutes before

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Local storm report, May 8, 8:36 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
836 PM CDT FRI MAY 08 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0622 PM     TORNADO          13 NW THROCKMORTON      33.31N  99.34W
05/08/2015                   THROCKMORTON       TX   PUBLIC

            PUBLIC REPORTED TORNADO ON THR GROUND.

&&

EVENT NUMBER SJT1500320

DOLL

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, 8:51 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	Callahan	48 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.