Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 103, NWS San Angelo, TX

May 25, 20184 counties in Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 25, 2018, 10:34 PM CDT for 4 counties in Texas. It was in force for 41 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 25, 2018, 10:34 PM CDT (03:34 UTC)
Expired: May 25, 2018, 11:15 PM CDT
In force: 41 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Brown County, TX, Callahan County, TX, Coleman County, TX, Shackelford County, TX

The radar

The Dyess AFB radar (KDYX), 44 km from the middle of the area, began a volume at 03:35 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

Fort Worth, TX (KFWD), launched 00:00Z, 3.6 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: 21 J/kg
Mixed-layer CIN: -543 J/kg
Mixed-layer LCL: 2168 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 399 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

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 25, 5:32 PM CDT, 5 hours 2 minutes earlier.

Area forecast discussion, May 25, 5:32 PM CDT, 5 hours 2 minutes before

Area Forecast Discussion
National Weather Service San Angelo TX
532 PM CDT Fri May 25 2018

.AVIATION...
/00Z TAFS/

Isolated to widely scattered thunderstorms are possible across
the Big Country this evening. However, confidence is not high
enough to add a VCTS at the KABI terminal, and will watch radar
trends. Otherwise, expect VFR tonight and Saturday.  21

&&

.PREV DISCUSSION... /issued 240 PM CDT Fri May 25 2018/

SHORT TERM...
(Tonight and Saturday)

Mostly clear skies are in place across the forecast area this
afternoon, with temperatures currently in the lower to mid 90s. A
shortwave trough over eastern Oklahoma is driving a band of showers
and thunderstorms across portions of north and east Texas. Closer to
West Central Texas, an isolated thunderstorm has developed in
southern Pecos County where ML CAPE values of 1000-1500 J/KG are
present. Both the NAM and TT-WRF develop scattered showers and
thunderstorms later this afternoon and evening to the west and
northwest of our area and try to bring this activity into our
western counties. Have mentioned a slight chance of PoP's across
mainly the Big Country and northern Concho Valley this evening,
where models have been most consistent with developing a cluster of
storms over northwest Texas and clipping the Big Country in the
westerly flow aloft. Some of these storms could be strong to severe,
with the primary threats being large hail and damaging winds.

Otherwise, the main story on Saturday will be the very hot
temperatures as the upper level ridge further strengthens over the
area and 850MB temperatures rise to near 29-30 degrees across the
western Concho Valley and Big Country. Have bumped temperatures up a
couple of degrees for tomorrow but have not gone quite as high as
the MEX guidance. Regardless, highs will soar into the triple digits
across much of the area under plenty of sunshine.

LONG TERM...
(Saturday Night through Friday)

..Heat Wave Continues through Next Week...

Hot and dry weather will be the theme for West Central Texas
through next week as a strong ridge strengthens over the region
each day. GFS shows 850 mb temperatures reaching 30-33 deg C mid
through late next week, which is pretty high. Latest temperature
forecast have been bumped up a degree or two due to pretty good
model agreement. Latest forecast high temperatures show 97-102 for
Sunday, 97-101 Monday, 99-103 on Tuesday, 100-106 Wednesday, and
then 99-105 Thursday and Friday. Precipitation does not look
likely for this time-period due to increasing subsidence produced
by the ridge, and skies should be sunny to mostly sunny for the
most part.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 72 101  72  99 /  20   5   0   0
San Angelo 	 72 103  72 102 /  10   0   0   0
Junction 	 71 100  71 100 /  10   5   0   0
Brownwood 	 71  99  70  98 /  20   5   0   0
Sweetwater 	 72 102  72  99 /  20   0   0   5
Ozona      	 69 101  70 101 /  10   0   0   0

&&

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

Hazardous weather outlook, May 25, 2:46 PM CDT, 7 hours 48 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
246 PM CDT Fri May 25 2018

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-262000-
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-
246 PM CDT Fri May 25 2018

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

.DAY ONE...This Afternoon and Tonight

Scattered showers and thunderstorms are possible this evening and
tonight across mainly the Big Country. The primary hazards will
be large hail, damaging winds, and dangerous cloud to ground
lightning.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Hot weather is expected for the Memorial Day holiday weekend, with
temperatures at or above 100 degrees possible each day Saturday
through Thursday. The heat will affect outdoor holiday
activities, so necessary precautions should be taken in order to
stay safe and cool.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Local storm report, May 25, 8:54 PM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
854 PM CDT FRI MAY 25 2018

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

0851 PM     TSTM WND DMG     RICHLAND SPRINGS        31.27N  98.94W
05/25/2018                   SAN SABA           TX   LAW ENFORCEMENT

            DAMAGING THUNDERSTORM WINDS KNOCKING DOWN POWER POLES
            IN RICHLAND SPRINGS. WINDS WERE REPORTED TO BE VERY
            STRONG.

&&

EVENT NUMBER SJT1800077

HG

Local storm report, May 25, 9:12 PM CDT, 1 hour 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
912 PM CDT FRI MAY 25 2018

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

0850 PM     TSTM WND DMG     RICHLAND SPRINGS        31.27N  98.94W
05/25/2018                   SAN SABA           TX   EMERGENCY MNGR

            EMERGENCY MANAGER REPORTED UPROOTED TREES IN RICHLAND
            SPRINGS AND WINDS ESTIMATED AT 80 TO 90 MPH BETWEEN 850
            AND 9PM.

&&

EVENT NUMBER SJT1800078

HG

Local storm report, May 25, 9:20 PM CDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
920 PM CDT FRI MAY 25 2018

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

0903 PM     TSTM WND GST     STAMFORD                32.94N  99.80W
05/25/2018  M66 MPH          JONES              TX   MESONET

&&

EVENT NUMBER SJT1800079

HG

Special weather statement, May 25, 9:35 PM CDT, 59 minutes before

Special Weather Statement
National Weather Service San Angelo TX
935 PM CDT FRI MAY 25 2018

TXZ155-260315-
San Saba TX-
935 PM CDT FRI MAY 25 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SAN SABA COUNTY
UNTIL 1015 PM CDT...

At 934 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles south of Sloan, or 13 miles south of Algerita, moving south at
20 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

This storm will remain over mainly rural areas of southwestern San
Saba County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3092 9902 3113 9898 3110 9877 3092 9872
TIME...MOT...LOC 0234Z 008DEG 18KT 3104 9890

Local storm report, May 25, 9:46 PM CDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
946 PM CDT FRI MAY 25 2018

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

0926 PM     TORNADO          PONTOTOC                30.91N  98.98W
05/25/2018                   MASON              TX   LAW ENFORCEMENT

            DPS TROOPER REPORTED TORNADO TOUCHDOWN NEAR PONTOTOC AT
            AROUND 925 PM.

&&

EVENT NUMBER SJT1800080

HG

Local storm report, May 25, 10:17 PM CDT, 17 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 7:20 PM CDT	Severe Thunderstorm Warning	SJT	Brown	55 min
May 25, 7:59 PM CDT	Severe Thunderstorm Warning	SJT	Irion	30 min
May 25, 8:04 PM CDT	Special Weather Statement	SJT	Haskell, Throckmorton	41 min
May 25, 8:06 PM CDT	Severe Thunderstorm Warning	SJT	Brown	39 min
May 25, 8:25 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	65 min
May 25, 8:25 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	50 min
May 25, 8:36 PM CDT	Tornado Warning	SJT	San Saba	24 min
May 25, 8:52 PM CDT	Tornado Warning Considerable damage threat	SJT	San Saba	38 min
May 25, 9:00 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford, Throckmorton	45 min
May 25, 9:16 PM CDT	Severe Thunderstorm Warning	SJT	Mason, San Saba	44 min
May 25, 9:22 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, San Saba	38 min
May 25, 9:26 PM CDT	Tornado Warning	SJT	Mason	49 min
May 25, 9:35 PM CDT	Special Weather Statement	SJT	San Saba	40 min
May 25, 9:43 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	47 min
May 25, 10:00 PM CDT	Tornado Warning	SJT	Kimble, Mason	45 min
May 25, 10:38 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Mason	52 min
May 25, 10:48 PM CDT	Special Weather Statement	SJT	Kimble	42 min
May 25, 11:16 PM CDT	Special Weather Statement	SJT	Coleman	29 min
May 25, 11:21 PM CDT	Special Weather Statement	SJT	Brown	24 min
May 25, 11:50 PM CDT	Special Weather Statement	SJT	Brown	25 min
May 26, 5:14 PM CDT	Special Weather Statement	SJT	Coke	31 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.