Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 180, NWS San Angelo, TX

December 26, 20184 counties in Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Dec 26, 2018, 4:20 PM CST for 4 counties in Texas. It was in force for 40 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: Dec 26, 2018, 4:20 PM CST (22:20 UTC)
Expired: Dec 26, 2018, 5:00 PM CST
In force: 40 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Callahan County, TX, Jones County, TX, Shackelford County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 35 km from the middle of the area, began a volume at 22:21 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
Dec 26, 2:11 PM CST	Tornado Watch	SPC	10 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.3 hours before the alert went out and 221 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: 53 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 164 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 Dec 26, 2:47 PM CST, 1 hour 33 minutes earlier.

Area forecast discussion, Dec 26, 2:47 PM CST, 1 hour 33 minutes before

Area Forecast Discussion
National Weather Service San Angelo TX
247 PM CST Wed Dec 26 2018

.SHORT TERM...
(Tonight and Thursday

Squall line of strong to severe thunderstorms will track east into
West Central Texas this afternoon, and will follow the latest
high res models for its timing across the area. In general
however, the storms should be pushing out of the western counties
early this evening and then exiting the eastern counties later in
the evening.

.LONG TERM...
(Thursday Night through Wednesday)

Next upper level trough will slide into the Southern Rockies for
Friday and Saturday. Much colder conditions expected by Saturday
with highs only in the mid 30s to lower 40s. Some chance of very
light precipitation, perhaps in the form of some sort of wintry
precipitation. Given how light the precip is however, little in
the way of actual impacts expected.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 46  58  32  46 /  50   0   0   0
San Angelo 	 45  62  33  54 /  20   0   0   0
Junction 	 45  65  34  61 /  80   0   0   0
Brownwood 	 45  61  32  50 /  90   0   0   0
Sweetwater 	 44  55  33  44 /  10   0   0   0
Ozona      	 41  60  35  58 /  20   0   0   0

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
None.
&&

07

Hazardous weather outlook, Dec 26, 2:23 PM CST, 1 hour 57 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
223 PM CST Wed Dec 26 2018

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-272030-
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-
223 PM CST Wed Dec 26 2018

This Hazardous Weather Outlook is for portions of west central
Texas.

.DAY ONE...This Afternoon and Tonight

Strong to severe storms will continue to develop and move across
West Central Texas through early this evening. Damaging winds,
large hail, and isolated tornadoes will be possible. Severe
Thunderstorm and Tornado watches remain in effect.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

The threat for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be requested.

In the hours before

Local storm report, Dec 26, 3:46 PM CST, 34 minutes before

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Special weather statement, Dec 26, 3:47 PM CST, 33 minutes before

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Special weather statement, Dec 26, 3:51 PM CST, 29 minutes before

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Local storm report, Dec 26, 4:02 PM CST, 18 minutes before

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Local storm report, Dec 26, 4:08 PM CST, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
408 PM CST WED DEC 26 2018

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

0341 PM     TSTM WND GST     4 SSW SAN ANGELO        31.39N 100.48W
12/26/2018  M54 MPH          TOM GREEN          TX   ASOS

            GUST WAS MEASURED BY THE ASOS AT THE SAN
            ANGELO AIRPORT.

&&

Local storm report, Dec 26, 4:11 PM CST, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
411 PM CST WED DEC 26 2018

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

0401 PM     TSTM WND GST     MARYNEAL                32.24N 100.45W
12/26/2018  M50 MPH          NOLAN              TX   PUBLIC

&&

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 26, 11:47 AM CST	Special Weather Statement	SJT	San Saba	43 min
Dec 26, 12:23 PM CST	Special Weather Statement	SJT	San Saba	37 min
Dec 26, 1:44 PM CST	Special Weather Statement	SJT	Upton	46 min
Dec 26, 2:38 PM CST	Special Weather Statement	SJT	Irion, Sterling	52 min
Dec 26, 2:41 PM CST	Severe Thunderstorm Warning	SJT	Crockett	64 min
Dec 26, 3:07 PM CST	Special Weather Statement	SJT	Coke, Irion, Sterling, Tom Green	38 min
Dec 26, 3:16 PM CST	Special Weather Statement	SJT	Haskell, Jones	44 min
Dec 26, 3:20 PM CST	Special Weather Statement	SJT	Fisher, Nolan	40 min
Dec 26, 3:47 PM CST	Special Weather Statement	SJT	Jones, Taylor	58 min
Dec 26, 3:51 PM CST	Special Weather Statement	SJT	Coke, Concho, Irion, Runnels, Schleicher, Sterling and 2 more	39 min
Dec 26, 4:25 PM CST	Special Weather Statement	SJT	Haskell	50 min
Dec 26, 4:34 PM CST	Special Weather Statement	SJT	Coleman, Concho, Menard, Runnels, Schleicher, Sutton and 1 more	41 min
Dec 26, 4:41 PM CST	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	49 min
Dec 26, 4:45 PM CST	Tornado Warning	SJT	Callahan	24 min
Dec 26, 5:15 PM CST	Special Weather Statement	SJT	Concho, Kimble, McCulloch, Menard, Sutton	45 min
Dec 26, 5:36 PM CST	Special Weather Statement	SJT	Throckmorton	24 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018 Every severe thunderstorm warning in 2018

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.