Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 191, NWS Amarillo, TX

June 22, 20185 counties in Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 22, 2018, 9:54 PM CDT for 5 counties in Texas. It was in force for 66 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 22, 2018, 9:54 PM CDT (02:54 UTC)
Expired: Jun 22, 2018, 11:00 PM CDT
In force: 66 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Collingsworth County, TX, Donley County, TX, Gray County, TX, Hemphill County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 111 km from the middle of the area, began a volume at 02:53 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 22, 3:29 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.9 hours before the alert went out and 110 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: 1014 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 2931 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.9

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 Jun 22, 5:59 PM CDT, 3 hours 55 minutes earlier.

Area forecast discussion, Jun 22, 5:59 PM CDT, 3 hours 55 minutes before

Area Forecast Discussion
National Weather Service Amarillo TX
559 PM CDT Fri Jun 22 2018

.AVIATION...
00Z TAF Cycle

VFR conditions will prevail through 00Z Sunday, although
thunderstorms are expected to impact the Dalhart, Amarillo and
Guymon TAF sites between 00Z and 04Z Saturday with possible MVFR
ceilings and visibilities. South to southeast winds 20 to 30 knots
with gusts near 35 to 40 knots with shift to the north and
northeast after 02Z to 04Z Saturday at the Guymon and Dalhart TAF
sites and then at the Amarillo TAF site after 07Z to 09Z Saturday.
North to northeast winds 5 to 15 knots at all three TAF sites
after 10Z to 12Z Saturday.

Schneider

&&

.PREV DISCUSSION... /Issued 402 PM CDT Fri Jun 22 2018/

DISCUSSION...
Upper trough tracking east out of the Rockies and across the
Plains states this evening and tonight along with a cold front
pushing south across the Panhandles tonight will allow for
convection development through this evening and into the overnight
hours tonight. Cold front will move south of the forecast area by
Saturday morning or midday and is expected to become stationary
well south of the Panhandles by Saturday afternoon. Surface ridge
will build in behind the front Saturday across the forecast area
allowing for not as warm conditions.

Frontal boundary forecast to lift north and east as a warm front
by Sunday afternoon as a closed upper low tracks east out of the
northern and central Rockies and then into the central Plains
states by Sunday evening. Convection expected to develop once
again across mainly the northern and eastern Panhandles Sunday
afternoon into Sunday night. Upper high to build in over the
southwestern states by Monday night with northwesterly flow aloft
re-establishing itself over the Panhandles. Shortwave trough to
drop southeast out of the central Rockies Monday night with
chances for convection likely again Monday night. Upper high to
build in over the forecast area by the middle and end of next
week.

Schneider

&&

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

&&

11

Hazardous weather outlook, Jun 22, 3:37 PM CDT, 6 hours 17 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
337 PM CDT Fri Jun 22 2018

OKZ001>003-TXZ001>020-317-231100-
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-
337 PM CDT Fri Jun 22 2018

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

.DAY ONE...This Afternoon and Tonight.

Scattered thunderstorms are expected through tonight. Some storms
through tonight will likely become severe. The main threats will
be hail up to two inches in diameter and gusts of 70 MPH or more.
The potential for tornadoes will also exist this evening. Heavy
rains may occur, possibly leading to localized flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Thunderstorms will be possible across parts of the Panhandles
Sunday afternoon through Monday night. Some of the storms may
become strong to marginally severe with large hail and strong
winds as the main threats.

.SPOTTER INFORMATION STATEMENT...

Emergency Managers and spotter groups need to be ready for
activation through this evening.

Schneider

In the hours before

Local storm report, Jun 22, 9:18 PM CDT, 36 minutes before

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Local storm report, Jun 22, 9:28 PM CDT, 26 minutes before

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Local storm report, Jun 22, 9:32 PM CDT, 22 minutes before

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Special weather statement, Jun 22, 9:36 PM CDT, 18 minutes before

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Local storm report, Jun 22, 9:43 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
943 PM CDT FRI JUN 22 2018

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

0935 PM     TSTM WND GST     2 E PAMPA               35.54N 100.93W
06/22/2018  M72 MPH          GRAY               TX   MESONET

&&

EVENT NUMBER AMA1800320

LE

Local storm report, Jun 22, 9:48 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
948 PM CDT FRI JUN 22 2018

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

0940 PM     TSTM WND GST     4 SSW CODMAN            35.58N 100.78W
06/22/2018  E80 MPH          GRAY               TX   TRAINED SPOTTER

&&

EVENT NUMBER AMA1800321

LE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 7:14 PM CDT	Tornado Warning Tornado observed	AMA	Lipscomb, Ochiltree	30 min
Jun 22, 7:26 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree, Roberts	45 min
Jun 22, 7:41 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	41 min
Jun 22, 7:48 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray	57 min
Jun 22, 7:52 PM CDT	Special Weather Statement	AMA	Sherman	38 min
Jun 22, 7:56 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Moore, Sherman	64 min
Jun 22, 8:14 PM CDT	Special Weather Statement	AMA	Hemphill	61 min
Jun 22, 8:31 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hansford, Hutchinson, Ochiltree, Roberts	59 min
Jun 22, 8:41 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	53 min
Jun 22, 8:54 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hutchinson, Roberts	66 min
Jun 22, 9:01 PM CDT	Tornado Warning	AMA	Donley, Gray	26 min
Jun 22, 9:19 PM CDT	Tornado Warning	AMA	Carson, Gray, Hutchinson, Roberts	26 min
Jun 22, 9:33 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Donley, Gray, Hemphill, Roberts, Wheeler	42 min
Jun 22, 9:36 PM CDT	Special Weather Statement	AMA	Collingsworth	54 min
Jun 22, 10:16 PM CDT	Tornado Warning	AMA	Wheeler	29 min
Jun 22, 10:36 PM CDT	Special Weather Statement	AMA	Collingsworth	24 min
Jun 22, 10:59 PM CDT	Special Weather Statement	AMA	Wheeler	16 min
Jun 22, 7:07 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	53 min
Jun 22, 8:43 PM CDT	Special Weather Statement	AMA	Texas	32 min
Jun 22, 10:22 PM CDT	Special Weather Statement	AMA	Beaver	23 min
Jun 22, 10:45 PM CDT	Special Weather Statement	AMA	Beaver	30 min
Jun 23, 12:04 AM CDT	Special Weather Statement	AMA	Beaver	56 min
Jun 23, 1:13 AM CDT	Special Weather Statement	AMA	Beaver	62 min
Jun 23, 2:01 AM CDT	Areal Flood Advisory	AMA	Beaver, Texas	3 hr
Jun 23, 2:20 AM CDT	Special Weather Statement	AMA	Beaver	25 min
Jun 23, 4:11 AM CDT	Special Weather Statement	AMA	Texas	34 min
Jun 23, 4:24 AM CDT	Severe Thunderstorm Warning	AMA	Texas	36 min
Jun 23, 4:55 AM CDT	Special Weather Statement	AMA	Beaver	65 min
Jun 23, 5:18 AM CDT	Areal Flood Advisory	AMA	Beaver, Texas	4 hr
Jun 23, 6:15 AM CDT	Special Weather Statement	AMA	Beaver	45 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.