Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 223, NWS Amarillo, TX

July 12, 2016Gray County, Wheeler County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 12, 2016, 9:44 PM CDT for Gray County, Wheeler 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
Jul 12, 2016, 9:44 PM CDT (02:44 UTC)
Expired
Jul 12, 2016, 10:20 PM CDT
In force
36 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
2.5 in
Wind
70.0 mph

Counties Gray County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 108 km from the middle of the area, began a volume at 02:47 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.7 hours before the alert went out and 107 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, Amarillo Airport, TX at 00:00Z on 2016-07-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 415 joules per kilogram.LCLLFCEL10008507005003002001001 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, Amarillo Airport, TX at 00:00Z on 2016-07-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
415 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
3237 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
35 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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 12, 5:47 PM CDT, 3 hours 57 minutes earlier.

Area forecast discussion, Jul 12, 5:47 PM CDT, 3 hours 57 minutes before
Area Forecast Discussion
National Weather Service Amarillo TX
547 PM CDT TUE JUL 12 2016

.AVIATION...
00Z TAF Cycle

A frontal boundary across the eastern Panhandles and surface trough
across the western Panhandles along with surface heating and low
level moisture will allow for the possibility of isolated convection
this evening. The Amarillo TAF site has the most likely chance for
convection and included a TEMPO group from 00Z to 04Z Wednesday. Low
confidence at the Dalhart and Guymon TAF sites and left out for now.
VFR conditions expected through 00Z Thursday. East and southeast
winds will veer around to the south and southwest 5 to 15 knots with
some 15 to 25 knots at the Amarillo TAF site after 02Z to 04Z
Wednesday with some higher gusts possible. Winds should veer more to
the west and northwest after 14Z to 16Z Wednesday after the surface
trough move east across the TAF sites.

Schneider

&&

.PREV DISCUSSION... /Issued 330 PM CDT TUE JUL 12 2016/

DISCUSSION...
Isolated showers and thunderstorms will be possible through this
evening along a front which has stalled across the eastern Texas
Panhandle. More showers and thunderstorms may be possible across the
northern CWA as convection forms over southeast Colorado and
northeast New Mexico and heads this way in the westerly flow aloft.

A surface trough will set up across the eastern CWA and the
southwest winds behind it should help temperatures warm back up into
the 98 to 108 range again. This surface trough should be another
focus for shower and thunderstorm development Wednesday afternoon
and Wednesday night.

Shower and thunderstorm chances go up Thursday through Friday night
as a cold front moves into the area and then stalls.

The weather then starts to dry out for the rest of the forecast as
an upper level ridge builds over the region.

&&

.AMA Watches/Warnings/Advisories...
TX...None.
OK...None.

&&

11/10
Hazardous weather outlook, Jul 12, 9:30 PM CDT, 14 minutes before
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In the hours before

Special weather statement, Jul 12, 5:51 PM CDT, 3 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
551 PM CDT TUE JUL 12 2016

TXZ017-018-122345-
ARMSTRONG TX-RANDALL TX-
551 PM CDT TUE JUL 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL ARMSTRONG AND
NORTHEASTERN RANDALL COUNTIES UNTIL 645 PM CDT...

AT 551 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
PALO DURO CANYON...OR 14 MILES EAST OF CANYON...MOVING NORTHEAST AT 5
MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
PALO DURO CANYON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER IN A STURDY BUILDING IF THREATENING WEATHER APPROACHES.

&&

LAT...LON 3484 10163 3494 10181 3517 10167 3501 10141
TIME...MOT...LOC 2251Z 216DEG 5KT 3495 10167

SCHNEIDER
Special weather statement, Jul 12, 6:09 PM CDT, 3 hours 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
609 PM CDT TUE JUL 12 2016

TXZ013-018-130015-
ARMSTRONG TX-CARSON TX-
609 PM CDT TUE JUL 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ARMSTRONG AND
SOUTHEASTERN CARSON COUNTIES UNTIL 715 PM CDT...

AT 609 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
CLAUDE...MOVING EAST AT 10 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CLAUDE...GROOM AND GOODNIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER IN A STURDY BUILDING IF THREATENING WEATHER APPROACHES.

&&

LAT...LON 3503 10148 3521 10145 3522 10109 3512 10109
      3495 10111
TIME...MOT...LOC 2309Z 276DEG 8KT 3512 10138

SCHNEIDER
Special weather statement, Jul 12, 6:56 PM CDT, 2 hours 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
656 PM CDT TUE JUL 12 2016

TXZ017-018-130100-
ARMSTRONG TX-RANDALL TX-
656 PM CDT TUE JUL 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL ARMSTRONG AND
SOUTHEASTERN RANDALL COUNTIES UNTIL 800 PM CDT...

AT 656 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 5
MILES NORTHWEST OF HAPPY...OR 12 MILES SOUTH OF CANYON...MOVING
NORTHEAST AT 20 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
PALO DURO CANYON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER IN A STURDY BUILDING IF THREATENING WEATHER APPROACHES.

&&

LAT...LON 3475 10198 3482 10206 3515 10167 3494 10146
      3475 10180
TIME...MOT...LOC 2356Z 229DEG 17KT 3480 10192

SCHNEIDER
Local storm report, Jul 12, 8:36 PM CDT, 1 hour 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
836 PM CDT TUE JUL 12 2016

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

0820 PM     HAIL             5 E CLAUDE              35.11N 101.27W
07/12/2016  M1.25 INCH       ARMSTRONG          TX   BROADCAST MEDIA

            REPORTED ON US HIGHWAY 287 EAST OF CLAUDE.

&&

EVENT NUMBER AMA1600609

KJS
Local storm report, Jul 12, 9:00 PM CDT, 44 minutes before
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Local storm report, Jul 12, 9:11 PM CDT, 33 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 12, 7:20 PM CDTSevere Thunderstorm WarningAMAArmstrong, Randall55 min
Jul 12, 8:15 PM CDTSevere Thunderstorm WarningAMAArmstrong45 min
Jul 12, 8:41 PM CDTSevere Thunderstorm WarningAMAArmstrong, Carson, Donley, Gray64 min
Jul 13, 4:14 AM CDTHeat AdvisoryAMAArmstrong, Carson, Dallam, Deaf Smith, Gray, Hansford and 9 more16 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2016Every severe thunderstorm warning in 2016

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.