Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 224, NWS Amarillo, TX

July 29, 2018Lipscomb County, Ochiltree County, Texas; Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 29, 2018, 12:14 AM CDT for Lipscomb County, Ochiltree County, Texas; Beaver County, Oklahoma. It was in force for 18 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 29, 2018, 12:14 AM CDT (05:14 UTC)
Expired
Jul 29, 2018, 12:32 AM CDT
In force
18 min
Issued by
NWS Amarillo, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Beaver County, OK, Lipscomb County, TX, Ochiltree County, TX

The radar

The Dodge City radar (KDDC), 155 km from the middle of the area, began a volume at 05:14 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

Dodge City, (KDDC), launched 00:00Z, 5.2 hours before the alert went out and 158 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, Dodge City, at 00:00Z on 2018-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1797 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, Dodge City, at 00:00Z on 2018-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.19395878Sfc1 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
1797 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1480 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.2
Supercell composite
3.8

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 28, 6:11 PM CDT, 6 hours 3 minutes earlier.

Area forecast discussion, Jul 28, 6:11 PM CDT, 6 hours 3 minutes before
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Hazardous weather outlook, Jul 28, 3:28 PM CDT, 8 hours 46 minutes before
Hazardous Weather Outlook
National Weather Service Amarillo TX
328 PM CDT Sat Jul 28 2018

OKZ001>003-TXZ001>020-317-290830-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
Palo Duro Canyon-
328 PM CDT Sat Jul 28 2018

This Hazardous Weather Outlook is for the Texas and Oklahoma
Panhandles.

.DAY ONE...This Afternoon and Tonight.

Thunderstorms are forecast to develop this evening across the
Oklahoma and Texas Panhandles. A few storms may become strong to
marginally severe, with damaging winds the primary hazard.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Thunderstorms are expected across the Oklahoma and Texas Panhandles
Sunday through Monday night, and then again Tuesday night through
Wednesday night. A few storms will have the potential to become
strong to marginally severe at times with damaging winds and hail
the primary hazards. In addition, heavy rainfall may accompany the
strongest storms, which could lead to localized flooding or flash
flooding, especially Sunday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

Guerrero

In the hours before

Special weather statement, Jul 28, 9:31 PM CDT, 2 hours 43 minutes before
Special Weather Statement
National Weather Service Amarillo TX
931 PM CDT SAT JUL 28 2018

OKZ002-290315-
Texas OK-
931 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN TEXAS COUNTY UNTIL
1015 PM CDT...

At 930 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles southeast of Stonington, or 16 miles northwest of Elkhart,
moving southeast at 20 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Guymon, Hooker, Goodwell, Optima, Eva and Hough.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3693 10104 3650 10172 3650 10174 3671 10203
      3699 10203 3700 10123
TIME...MOT...LOC 0230Z 292DEG 17KT 3720 10208

Beat
Local storm report, Jul 28, 10:20 PM CDT, 1 hour 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1020 PM CDT SAT JUL 28 2018

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

1016 PM     TSTM WND GST     12 NE EVA               36.92N 101.78W
07/28/2018  M54 MPH          TEXAS              OK   MESONET

&&

EVENT NUMBER AMA1800407

BEAT
Special weather statement, Jul 28, 10:20 PM CDT, 1 hour 54 minutes before
Special Weather Statement
National Weather Service Amarillo TX
1020 PM CDT SAT JUL 28 2018

OKZ002-290400-
Texas OK-
1020 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN TEXAS COUNTY UNTIL 1100
PM CDT...

At 1019 PM CDT, automated weather equipment reported 50 mph winds at
Eva mesonet associated with a strong thunderstorm 5 miles east of
Elkhart, moving southeast at 20 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Guymon, Goodwell and Hough.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3653 10157 3687 10197 3699 10190 3700 10124
TIME...MOT...LOC 0319Z 292DEG 17KT 3698 10179

Beat
Special weather statement, Jul 28, 10:50 PM CDT, 1 hour 24 minutes before
Special Weather Statement
National Weather Service Amarillo TX
1050 PM CDT SAT JUL 28 2018

OKZ002-290430-
Texas OK-
1050 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR TEXAS COUNTY UNTIL 1130 PM CDT...

At 1050 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles northeast of Hough, or 16 miles south of Feterita, moving east
at 25 mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

Locations impacted include...
Guymon, Hooker, Goodwell, Tyrone, Optima, Hardesty, Hough, Baker and
Adams.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

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

&&

LAT...LON 3650 10095 3650 10168 3699 10163 3700 10094
TIME...MOT...LOC 0350Z 288DEG 22KT 3692 10147

Beat
Special weather statement, Jul 28, 11:31 PM CDT, 43 minutes before
Special Weather Statement
National Weather Service Amarillo TX
1131 PM CDT SAT JUL 28 2018

TXZ003-004-290530-
Ochiltree TX-Hansford TX-
1131 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL HANSFORD AND SOUTHWESTERN
OCHILTREE COUNTIES UNTIL 1230 AM CDT...

At 1131 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Gruver, or 17 miles northwest of Spearman, moving east
at 30 mph.

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

Locations impacted include...
Perryton, Waka and Farnsworth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3629 10154 3646 10150 3638 10074 3612 10080
TIME...MOT...LOC 0431Z 281DEG 27KT 3636 10143

Schneider
Special weather statement, Jul 28, 11:34 PM CDT, 40 minutes before
Special Weather Statement
National Weather Service Amarillo TX
1134 PM CDT SAT JUL 28 2018

OKZ002-003-290530-
Texas OK-Beaver OK-
1134 PM CDT SAT JUL 28 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN BEAVER AND EAST
CENTRAL TEXAS COUNTIES UNTIL 1230 AM CDT...

At 1134 PM CDT, Doppler radar was tracking a strong thunderstorm over
Baker, or 15 miles south of Liberal, moving east at 30 mph.

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

Locations impacted include...
Beaver, Turpin, Floris, Baker, Adams and Boyd.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3675 10111 3693 10107 3685 10030 3659 10037
TIME...MOT...LOC 0434Z 281DEG 27KT 3683 10101

Schneider

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 11:31 PM CDTSpecial Weather StatementAMAHansford, Ochiltree59 min
Jul 29, 12:33 AM CDTSpecial Weather StatementAMALipscomb27 min
Jul 29, 4:30 AM CDTSpecial Weather StatementAMALipscomb30 min
Jul 29, 5:25 AM CDTSpecial Weather StatementAMARandall65 min
Jul 29, 5:30 AM CDTSpecial Weather StatementAMAWheeler60 min
Jul 28, 8:14 PM CDTSpecial Weather StatementAMACimarron46 min
Jul 28, 9:31 PM CDTSpecial Weather StatementAMATexas44 min
Jul 28, 10:20 PM CDTSpecial Weather StatementAMATexas40 min
Jul 28, 10:50 PM CDTSpecial Weather StatementAMATexas40 min
Jul 28, 11:34 PM CDTSpecial Weather StatementAMABeaver56 min
Jul 28, 11:43 PM CDTSevere Thunderstorm WarningAMABeaver35 min
Jul 29, 2:44 AM CDTSpecial Weather StatementAMABeaver61 min
Jul 29, 3:48 AM CDTSpecial Weather StatementAMABeaver57 min
Jul 29, 4:07 AM CDTAreal Flood AdvisoryAMABeaver85 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018Severe Thunderstorm Warnings in Oklahoma, 2018Every 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.