Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 71, NWS San Angelo, TX

May 15, 2018Irion County, Sterling County, Tom Green County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 15, 2018, 5:07 PM CDT for Irion County, Sterling County, Tom Green County, 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 15, 2018, 5:07 PM CDT (22:07 UTC)
Expired: May 15, 2018, 5:45 PM CDT
In force: 38 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 1.75 in
Wind: 70.0 mph

Counties Irion County, TX, Sterling County, TX, Tom Green County, TX

The radar

The San Angelo radar (KSJT), 36 km from the middle of the area, began a volume at 22:08 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, 10.1 hours before the alert went out and 138 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, 2 hours 46 minutes earlier.

Area forecast discussion, May 15, 2:21 PM CDT, 2 hours 46 minutes before

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Hazardous weather outlook, May 15, 2:18 PM CDT, 2 hours 49 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, 4:46 PM CDT, 21 minutes before

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Special weather statement, May 15, 4:54 PM CDT, 13 minutes before

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Local storm report, May 15, 4:57 PM CDT, 10 minutes before

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Local storm report, May 15, 4:59 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
459 PM CDT TUE MAY 15 2018

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

0443 PM     TSTM WND GST     4 WSW STERLING CITY     31.82N 101.05W
05/15/2018  M72 MPH          STERLING           TX   MESONET

            STERLING CITY MESONET SITE REPORTED 72 MPH WIND GUST.

&&

EVENT NUMBER SJT1800047

PO

Local storm report, May 15, 5:04 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
504 PM CDT TUE MAY 15 2018

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

0449 PM     HAIL             STERLING CITY           31.84N 100.99W
05/15/2018  E0.88 INCH       STERLING           TX   LAW ENFORCEMENT

            NICKEL SIZED HAIL HAS BEEN REPORTED IN STERLING CITY BY
            THE LOCAL LAW ENFORCEMENT.

&&

EVENT NUMBER SJT1800048

PO

Local storm report, May 15, 5:06 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
506 PM CDT TUE MAY 15 2018

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

0449 PM     TSTM WND DMG     STERLING CITY           31.84N 100.99W
05/15/2018                   STERLING           TX   LAW ENFORCEMENT

            A POWER POLE WAS BROKEN IN HALF WITH THE WINDS BEING
            ESTIMATED AT ROUGHLY 80 MPH.

&&

EVENT NUMBER SJT1800049

PO

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, 4:12 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Sterling	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, 5:46 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.