Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 17, NWS Amarillo, TX

April 17, 2019Armstrong County, Donley County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Apr 17, 2019, 1:10 PM CDT for Armstrong County, Donley County, Texas. It was in force for 56 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: Apr 17, 2019, 1:10 PM CDT (18:10 UTC)
Expired: Apr 17, 2019, 2:06 PM CDT
In force: 56 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Armstrong County, TX, Donley County, TX

The radar

The Amarillo radar (KAMA), 64 km from the middle of the area, began a volume at 18:13 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 12:00Z, 6.2 hours before the alert went out and 63 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2860 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 33 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 Apr 17, 12:39 PM CDT, 31 minutes earlier.

Area forecast discussion, Apr 17, 12:39 PM CDT, 31 minutes before

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Hazardous weather outlook, Apr 17, 3:30 AM CDT, 9 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
330 AM CDT Wed Apr 17 2019

OKZ001>003-TXZ001>020-317-172100-
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-
330 AM CDT Wed Apr 17 2019

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

.DAY ONE...Today and Tonight.

Thunderstorms are expected Wednesday afternoon and evening. Some
storms could become strong to severe, with severe storms most
likely across the eastern Panhandles. Large hail, damaging winds,
and heavy rains, possibly leading to localized flooding will all
be possible. Additionally, an isolated tornado cannot be ruled
out.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

There is a slight chance for thunderstorms Monday night and
Monday. The threat for severe weather with these storms appears
minimal at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed after 1pm this afternoon.

In the hours before

Special weather statement, Apr 17, 1:02 PM CDT, 8 minutes before

Special Weather Statement
National Weather Service Amarillo TX
102 PM CDT Wed Apr 17 2019

TXZ018-171830-
Armstrong TX-
102 PM CDT Wed Apr 17 2019

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ARMSTRONG COUNTY UNTIL
130 PM CDT...

At 102 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Wayside, or 17 miles south of Claude, moving
northeast at 30 mph.

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

Locations impacted include...
Claude and Goodnight.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3488 10156 3518 10131 3500 10109 3494 10109
      3479 10147
TIME...MOT...LOC 1802Z 224DEG 25KT 3487 10145

Ward

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 1:02 PM CDT	Special Weather Statement	AMA	Armstrong	28 min
Apr 17, 1:45 PM CDT	Special Weather Statement	AMA	Donley	30 min
Apr 17, 1:55 PM CDT	Severe Thunderstorm Warning	AMA	Donley	65 min
Apr 17, 2:13 PM CDT	Special Weather Statement	AMA	Gray	32 min
Apr 17, 2:15 PM CDT	Severe Thunderstorm Warning	AMA	Donley, Gray	40 min
Apr 17, 2:22 PM CDT	Areal Flood Advisory	AMA	Donley, Gray	3 hr
Apr 17, 2:36 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	69 min
Apr 17, 2:44 PM CDT	Special Weather Statement	AMA	Oldham	31 min
Apr 17, 2:56 PM CDT	Special Weather Statement	AMA	Deaf Smith	34 min
Apr 17, 3:00 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	40 min
Apr 17, 3:04 PM CDT	Severe Thunderstorm Warning	AMA	Wheeler	71 min
Apr 17, 3:08 PM CDT	Special Weather Statement	AMA	Deaf Smith	37 min
Apr 17, 3:08 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Donley	82 min
Apr 17, 3:18 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb	72 min
Apr 17, 3:45 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Gray, Wheeler	60 min
Apr 17, 3:46 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree, Roberts	74 min
Apr 17, 3:54 PM CDT	Tornado Warning Tornado observed	AMA	Hemphill	24 min
Apr 17, 4:11 PM CDT	Tornado Warning Tornado observed	AMA	Hemphill, Lipscomb	49 min
Apr 17, 4:16 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	59 min
Apr 17, 4:36 PM CDT	Special Weather Statement	AMA	Deaf Smith	54 min
Apr 17, 4:46 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	59 min
Apr 17, 4:51 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	32 min
Apr 17, 5:05 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	55 min
Apr 17, 5:16 PM CDT	Areal Flood Advisory	AMA	Carson, Potter	3 hr
Apr 17, 5:17 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Wheeler	35 min
Apr 17, 5:20 PM CDT	Tornado Warning	AMA	Carson	16 min
Apr 17, 5:21 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Roberts	42 min
Apr 17, 5:28 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Deaf Smith, Randall	35 min
Apr 17, 5:49 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray	39 min
Apr 17, 5:53 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	33 min
Apr 17, 6:06 PM CDT	Areal Flood Advisory	AMA	Deaf Smith, Randall	3 hr
Apr 17, 6:41 PM CDT	Special Weather Statement	AMA	Potter	49 min

Nearby

Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning in 2019

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.