Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 193, NWS San Angelo, TX

June 30, 2017Fisher County, Jones County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Jun 30, 2017, 10:39 PM CDT for Fisher County, Jones County, Texas. It was in force for 34 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
Jun 30, 2017, 10:39 PM CDT (03:39 UTC)
Expired
Jun 30, 2017, 11:13 PM CDT
In force
34 min
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Fisher County, TX, Jones County, TX

The radar

The Dyess AFB radar (KDYX), 86 km from the middle of the area, began a volume at 03:39 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 00:00Z, 3.7 hours before the alert went out and 213 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-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2017-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1117 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2017-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1117 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
3339 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

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 Jun 30, 6:32 PM CDT, 4 hours 7 minutes earlier.

Area forecast discussion, Jun 30, 6:32 PM CDT, 4 hours 7 minutes before
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Hazardous weather outlook, Jun 30, 3:23 PM CDT, 7 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service San Angelo TX
323 PM CDT Fri Jun 30 2017

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-012030-
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-
323 PM CDT Fri Jun 30 2017

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

.DAY ONE...This Afternoon and Tonight

There is a slight risk of severe thunderstorms this evening and
tonight mainly north of Interstate 20 across the Big Country.
Showers and thunderstorms are expected to develop this evening
across the Red River and head southward. With high instability and
moderate wind shear, a few storms could reach severe levels.
Damaging winds will be the main threat, but hail and frequent
lightning will also be possible. The storms will continue to move
south after midnight...possibly reaching the Concho Valley and San
Angelo as they weaken.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

The probability of widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed across the Big Country this
evening.

In the hours before

Special weather statement, Jun 30, 9:58 PM CDT, 41 minutes before
Special Weather Statement
National Weather Service San Angelo TX
958 PM CDT FRI JUN 30 2017

TXZ049-113-010345-
Fisher TX-Jones TX-
958 PM CDT FRI JUN 30 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN JONES AND
NORTHEASTERN FISHER COUNTIES UNTIL 1045 PM CDT...

At 957 PM CDT, Doppler radar was tracking a strong thunderstorm near
Rotan, or 16 miles west of Hamlin, moving east at 30 mph.

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

This strong thunderstorm will be near...
  Hamlin around 1035 PM CDT.

Other locations impacted by this storm include Hitson and Tuxedo.

LAT...LON 3296 9995 3282 9993 3279 10049 3296 10052
TIME...MOT...LOC 0257Z 261DEG 24KT 3290 10041

AJW

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 7:44 PM CDTSevere Thunderstorm WarningSJTHaskell28 min
Jun 30, 9:58 PM CDTSpecial Weather StatementSJTFisher47 min
Jul 1, 2:07 AM CDTSpecial Weather StatementSJTHaskell38 min
Jul 1, 3:58 AM CDTSevere Thunderstorm WarningSJTFisher, Haskell, Jones, Nolan47 min
Jul 1, 4:05 AM CDTSpecial Weather StatementSJTShackelford40 min
Jul 1, 4:46 AM CDTSpecial Weather StatementSJTHaskell, Jones, Nolan44 min
Jul 1, 5:08 AM CDTSevere Thunderstorm WarningSJTHaskell, Jones, Shackelford, Throckmorton37 min
Jul 1, 5:39 AM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford, Taylor51 min
Jul 1, 6:29 AM CDTAreal Flood AdvisorySJTCallahan, Haskell, Jones, Shackelford, Taylor, Throckmorton3 hr
Jul 1, 6:32 AM CDTSpecial Weather StatementSJTBrown43 min
Jul 1, 6:40 AM CDTAreal Flood AdvisorySJTTom Green3 hr
Jul 1, 6:55 AM CDTSevere Thunderstorm WarningSJTBrown50 min

Nearby

Severe Thunderstorm Warnings in Texas, 2017Every severe thunderstorm warning in 2017

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.