Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 46, NWS San Angelo, TX

April 11, 2020Concho County, Tom Green County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 11, 2020, 7:52 PM CDT for Concho County, Tom Green County, Texas. It was in force for 36 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: Apr 11, 2020, 7:52 PM CDT (00:52 UTC)
Expired: Apr 11, 2020, 8:28 PM CDT
In force: 36 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Concho County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 31 km from the middle of the area, began a volume at 00:54 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
Apr 11, 2:02 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 0.9 hours before the alert went out and 203 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: 4 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 3489 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 15 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 Apr 11, 6:29 PM CDT, 1 hour 23 minutes earlier.

Area forecast discussion, Apr 11, 6:29 PM CDT, 1 hour 23 minutes before

Area Forecast Discussion
National Weather Service San Angelo TX
629 PM CDT Sat Apr 11 2020

.AVIATION...
/00Z TAFS/

Chances for brief thunderstorms this evening for most terminals,
followed by another round between 04-08Z. VFR outside of
thunderstorms. Rapid wind shifts expected in and during
thunderstorms with large hail and strong winds possible.
Thunderstorm threat ends by 12Z, but strong winds expected through
the day.

SK

&&

.PREV DISCUSSION... /issued 328 PM CDT Sat Apr 11 2020/

SHORT TERM...
(Tonight)

..Severe Thunderstorms...

Look for thunderstorms this afternoon and tonight, as another
upper disturbance moves over the region. The Storm Prediction
Center has all of West Central Texas in an Enhanced Risk Area,
through sunrise Sunday morning. The main hazards are tornadoes,
very large hail, damaging winds, and deadly lightning.

(Sunday)

..Breezy and Another Cold Front...

As another cold front, this one unusually strong for mid April,
moves closer to West Central Texas, gusty winds, from the west,
will develop Sunday. Then, the cold front may begin to move into
the Big Country, by mid afternoon. Although this front will be a
dry front, it will bring gusty winds from the north, along with
uncharacteristically cold temperatures, for mid April.

LONG TERM...
(Sunday night through Saturday)

..Much Cooler Temperatures then a Warmup...

Much cooler temperatures will dominate through mid week, before a
warming trend begins. Overnight lows Monday night, likely in the
mid to upper 30s, will be unusually cold, for mid April. Plus, the
wind chill Monday night, may be in the mid to upper 20s. Cooler
than usual temperatures will continue until Wednesday; then, a
warming trend will push temperatures back above usual mid April
temperatures for Friday and Saturday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 56  77  35  54 /  60   0   0   0
San Angelo 	 55  80  38  61 /  50   0   0   0
Junction 	 57  79  40  63 /  80   0   0   0
Brownwood 	 58  77  36  57 /  80   5   0   0
Sweetwater 	 54  77  35  54 /  50   0   0   0
Ozona      	 54  80  40  64 /  50   0   0   0

&&

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

99/99/99

Hazardous weather outlook, Apr 11, 2:48 PM CDT, 5 hours 4 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
248 PM CDT Sat Apr 11 2020

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-122000-
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-
248 PM CDT Sat Apr 11 2020

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

.DAY ONE...This Afternoon and Tonight

Expect severe thunderstorms. Hazards include tornadoes, very
large hail, damaging winds, and ever-present deadly lightning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

The threat for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...
We will likely need spotters this afternoon and evening. Please
relay any information about observed weather to the NWS, while
following all local, state, and CDC guidelines.

In the hours before

Local storm report, Apr 11, 6:12 PM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
612 PM CDT SAT APR 11 2020

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

0545 PM     TSTM WND GST     3 WSW SAN ANGELO        31.43N 100.51W
04/11/2020  E60 MPH          TOM GREEN          TX   NWS EMPLOYEE

            OFF DUTY NWS EMPLOYEE REPORTS 60 MPH WIND
            GUSTS AND PEA SIZE HAIL.

&&

Local storm report, Apr 11, 6:14 PM CDT, 1 hour 38 minutes before

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Local storm report, Apr 11, 6:30 PM CDT, 1 hour 22 minutes before

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Special weather statement, Apr 11, 6:53 PM CDT, 59 minutes before

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Special weather statement, Apr 11, 7:33 PM CDT, 19 minutes before

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Local storm report, Apr 11, 7:51 PM CDT, 1 minute 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
Apr 11, 7:08 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Tom Green	52 min
Apr 11, 7:10 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	35 min
Apr 11, 7:33 PM CDT	Special Weather Statement	SJT	Runnels	42 min
Apr 11, 7:38 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	37 min
Apr 11, 8:26 PM CDT	Special Weather Statement	SJT	Concho	49 min
Apr 11, 9:04 PM CDT	Special Weather Statement	SJT	Sterling	41 min
Apr 11, 10:37 PM CDT	Special Weather Statement	SJT	Crockett	38 min
Apr 11, 11:30 PM CDT	Special Weather Statement	SJT	Crockett	45 min
Apr 12, 12:18 AM CDT	Special Weather Statement	SJT	Crockett	42 min
Apr 12, 1:07 AM CDT	Severe Thunderstorm Warning	SJT	Crockett, Schleicher	53 min
Apr 12, 1:28 AM CDT	Severe Thunderstorm Warning	SJT	Crockett	62 min
Apr 12, 1:34 AM CDT	Special Weather Statement	SJT	Concho	41 min
Apr 12, 1:35 AM CDT	Tornado Warning	SJT	Crockett, Schleicher, Sutton	25 min
Apr 12, 1:58 AM CDT	Severe Thunderstorm Warning	SJT	Schleicher, Sutton, Tom Green	62 min
Apr 12, 2:13 AM CDT	Tornado Warning	SJT	Schleicher	13 min
Apr 12, 2:15 AM CDT	Special Weather Statement	SJT	Concho	45 min
Apr 12, 2:19 AM CDT	Severe Thunderstorm Warning	SJT	Crockett	56 min
Apr 12, 2:20 AM CDT	Special Weather Statement	SJT	Fisher	40 min
Apr 12, 2:37 AM CDT	Areal Flood Advisory	SJT	Tom Green	2 hr
Apr 12, 2:40 AM CDT	Special Weather Statement	SJT	Coke, Crockett, Irion, Sterling	50 min
Apr 12, 3:01 AM CDT	Severe Thunderstorm Warning	SJT	Coke, Crockett, Irion, Runnels, Schleicher, Sterling and 1 more	59 min
Apr 12, 3:02 AM CDT	Severe Thunderstorm Warning	SJT	Concho, Menard, Schleicher, Tom Green	58 min
Apr 12, 3:22 AM CDT	Special Weather Statement	SJT	Coke, Nolan	38 min
Apr 12, 3:36 AM CDT	Severe Thunderstorm Warning	SJT	Concho, McCulloch, Menard	54 min
Apr 12, 3:50 AM CDT	Tornado Warning	SJT	Concho, McCulloch	25 min
Apr 12, 4:02 AM CDT	Special Weather Statement	SJT	Coleman, Runnels	43 min
Apr 12, 4:08 AM CDT	Tornado Warning	SJT	McCulloch	31 min
Apr 12, 4:13 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman, McCulloch, San Saba	48 min
Apr 12, 4:47 AM CDT	Special Weather Statement	SJT	Brown, Coleman, McCulloch	43 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020 Every severe thunderstorm warning in 2020

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.