Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Amarillo, TX

May 18, 2021Cimarron County, Oklahoma

NWS Amarillo, TX issued this special weather statement at May 18, 2021, 1:14 PM CDT for Cimarron County, Oklahoma. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 18, 2021, 1:14 PM CDT (18:14 UTC)
Expired: May 18, 2021, 2:00 PM CDT
In force: 46 min
Issued by: NWS Amarillo, TX

County Cimarron County, OK

The radar

The Amarillo radar (KAMA), 187 km from the middle of the area, began a volume at 18:15 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 188 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: 1488 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -55 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at May 18, 12:30 PM CDT, 44 minutes earlier.

Area forecast discussion, May 18, 12:30 PM CDT, 44 minutes before

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Hazardous weather outlook, May 18, 3:02 AM CDT, 10 hours 12 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
302 AM CDT Tue May 18 2021

OKZ001>003-TXZ001>020-317-182100-
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-
302 AM CDT Tue May 18 2021

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

.DAY ONE...Today and Tonight.

Thunderstorms will be possible late this morning through this
evening. A few storms could become severe with large hail being
the primary potential hazard.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

With the exception of Thursday, thunderstorms will be possible
each afternoon and evening from Wednesday through Monday. At this
time, the probability for widespread severe thunderstorms is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, May 18, 10:31 AM CDT, 2 hours 43 minutes before

Special Weather Statement
National Weather Service Amarillo TX
1031 AM CDT Tue May 18 2021

TXZ011-016-181615-
Deaf Smith TX-Oldham TX-
1031 AM CDT Tue May 18 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OLDHAM AND
NORTHEASTERN DEAF SMITH COUNTIES UNTIL 1115 AM CDT...

At 1030 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Hereford, moving north at 20 mph.

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

Locations impacted include...
Vega and Wildorado.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3484 10224 3487 10257 3529 10264 3529 10217
TIME...MOT...LOC 1530Z 194DEG 19KT 3493 10245

LG

Local storm report, May 18, 1:03 PM CDT, 11 minutes before

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Special weather statement, May 18, 1:14 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 7:06 PM CDT	Areal Flood Advisory	AMA	Randall	21 min
May 17, 7:15 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	60 min
May 17, 7:15 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Hartley, Moore, Oldham, Potter, Randall	60 min
May 17, 7:27 PM CDT	Flash Flood Warning	AMA	Randall	3 hr
May 17, 7:30 PM CDT	Areal Flood Advisory	AMA	Dallam, Hartley, Oldham	36 min
May 17, 7:33 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	27 min
May 17, 7:35 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 17, 7:36 PM CDT	Special Weather Statement	AMA	Moore	24 min
May 17, 7:59 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Hartley, Hutchinson, Moore, Potter and 1 more	76 min
May 17, 8:05 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Sherman	55 min
May 17, 8:06 PM CDT	Flash Flood Warning	AMA	Dallam, Hartley, Oldham	52 min
May 17, 8:09 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Collingsworth, Donley, Gray	66 min
May 17, 8:41 PM CDT	Special Weather Statement	AMA	Dallam, Sherman	34 min
May 17, 9:08 PM CDT	Severe Thunderstorm Warning	AMA	Gray, Roberts	67 min
May 17, 9:15 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hansford, Hutchinson, Moore, Ochiltree, Potter and 2 more	60 min
May 17, 9:52 PM CDT	Special Weather Statement	AMA	Hansford, Hemphill, Ochiltree, Roberts	23 min
May 17, 10:13 PM CDT	Special Weather Statement	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	62 min
May 17, 11:11 PM CDT	Special Weather Statement	AMA	Lipscomb	49 min
May 18, 6:43 AM CDT	Dense Fog Advisory	AMA	Armstrong, Carson, Deaf Smith, Oldham, Potter, Randall	2 hr
May 18, 10:31 AM CDT	Special Weather Statement	AMA	Deaf Smith	44 min
May 18, 2:43 PM CDT	Special Weather Statement	AMA	Deaf Smith	62 min
May 18, 2:53 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	97 min
May 18, 3:21 PM CDT	Special Weather Statement	AMA	Carson	39 min
May 18, 4:00 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter	90 min
May 18, 4:16 PM CDT	Special Weather Statement	AMA	Carson	44 min
May 18, 5:19 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Moore, Oldham, Potter, Randall	86 min
May 18, 5:26 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 18, 5:27 PM CDT	Special Weather Statement	AMA	Carson	33 min
May 18, 5:45 PM CDT	Areal Flood Advisory	AMA	Armstrong, Carson, Hutchinson	3 hr
May 18, 6:03 PM CDT	Special Weather Statement	AMA	Carson	42 min
May 18, 6:28 PM CDT	Special Weather Statement	AMA	Hutchinson	47 min
May 17, 7:35 PM CDT	Special Weather Statement	AMA	Cimarron	25 min
May 17, 8:56 PM CDT	Special Weather Statement	AMA	Cimarron	49 min
May 18, 1:28 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	51 min

Nearby

Special Weather Statements in Oklahoma, 2021 Every special weather statement in 2021

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.