Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 70, NWS San Angelo, TX

May 15, 2018Coke County, Sterling County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 15, 2018, 4:12 PM CDT for Coke County, Sterling County, Texas. It was in force for 63 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 15, 2018, 4:12 PM CDT (21:12 UTC)
Expired: May 15, 2018, 5:15 PM CDT
In force: 63 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Coke County, TX, Sterling County, TX

The radar

The San Angelo radar (KSJT), 61 km from the middle of the area, began a volume at 21:15 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 nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 9.2 hours before the alert went out and 133 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: 474 J/kg
Mixed-layer CIN: -320 J/kg
Mixed-layer LCL: 1762 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 15, 2:21 PM CDT, 1 hour 51 minutes earlier.

Area forecast discussion, May 15, 2:21 PM CDT, 1 hour 51 minutes before

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Hazardous weather outlook, May 15, 2:18 PM CDT, 1 hour 54 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
218 PM CDT Tue May 15 2018

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-161930-
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-
218 PM CDT Tue May 15 2018

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

.DAY ONE...This Afternoon and Tonight

There is a slight risk for severe thunderstorms this afternoon and
evening across West Central Texas. The main threats are large
hail and damaging winds. Localized flooding is also possible as
storms will be slow moving.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday
There is a marginal risk for severe thunderstorms across most of
West Central Texas Wednesday afternoon and evening, as storms
become more isolated. The main threats are large hail and
damaging winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested this afternoon and evening.

In the hours before

Special weather statement, May 15, 3:50 PM CDT, 22 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 14, 7:16 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	44 min
May 14, 7:18 PM CDT	Flash Flood Warning	SJT	McCulloch	3 hr
May 14, 7:27 PM CDT	Flash Flood Warning	SJT	Tom Green	3 hr
May 14, 7:36 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Sterling, Tom Green	39 min
May 14, 7:59 PM CDT	Special Weather Statement	SJT	McCulloch	61 min
May 14, 8:18 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, Menard	57 min
May 14, 8:19 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Runnels, Tom Green	41 min
May 14, 8:35 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Concho, McCulloch, Runnels	40 min
May 14, 9:03 PM CDT	Special Weather Statement	SJT	Menard	57 min
May 14, 9:48 PM CDT	Areal Flood Advisory	SJT	Kimble, McCulloch, Mason, Menard	3 hr
May 14, 10:14 PM CDT	Special Weather Statement	SJT	Mason	46 min
May 14, 10:55 PM CDT	Special Weather Statement	SJT	Kimble, Mason	50 min
May 14, 11:52 PM CDT	Special Weather Statement	SJT	Kimble	23 min
May 15, 3:50 PM CDT	Special Weather Statement	SJT	Crockett	55 min
May 15, 3:57 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	63 min
May 15, 4:46 PM CDT	Special Weather Statement	SJT	Irion	59 min
May 15, 4:54 PM CDT	Special Weather Statement	SJT	Crockett	66 min
May 15, 5:07 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Sterling, Tom Green	38 min
May 15, 5:46 PM CDT	Severe Thunderstorm Warning	SJT	Crockett, Irion, Schleicher, Tom Green	44 min
May 15, 6:19 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Menard, Schleicher, Tom Green	56 min
May 15, 6:30 PM CDT	Severe Thunderstorm Warning	SJT	Tom Green	15 min
May 15, 6:39 PM CDT	Special Weather Statement	SJT	Fisher	66 min
May 15, 6:40 PM CDT	Areal Flood Advisory	SJT	Tom Green	2 hr
May 15, 6:49 PM CDT	Flash Flood Warning	SJT	Tom Green	116 min
May 15, 6:56 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	64 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.