Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 222, NWS Amarillo, TX

August 10, 2017Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Aug 10, 2017, 12:59 PM CDT for Beaver County, Oklahoma. It was in force for 61 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: Aug 10, 2017, 12:59 PM CDT (17:59 UTC)
Expired: Aug 10, 2017, 2:00 PM CDT
In force: 61 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 70.0 mph

County Beaver County, OK

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 6.0 hours before the alert went out and 124 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: 520 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 1117 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 Aug 10, 12:35 PM CDT, 24 minutes earlier.

Area forecast discussion, Aug 10, 12:35 PM CDT, 24 minutes before

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Hazardous weather outlook, Aug 10, 12:11 PM CDT, 48 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Amarillo TX
1211 PM CDT Thu Aug 10 2017

OKZ001>003-TXZ001>020-110515-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
1211 PM CDT Thu Aug 10 2017

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

.DAY ONE...This Afternoon and Tonight.

Thunderstorms will be possible across the panhandles through
tonight. Some storms may become severe mainly across the Oklahoma
Panhandle the northern Texas Panhandle, with damaging winds and large
hail the primary hazards. Another concern will be heavy rainfall,
which may lead to localized flooding or flash flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Thunderstorms will be possible across the Oklahoma and Texas
Panhandles every day through mid next week. Some storms that
develop during this time period may become strong to marginally
severe, with strong wind gusts and hail the primary hazards. In
addition, the strongest storms will be capable of producing heavy
rainfall, which may lead to localized flooding or flash flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter groups and emergency management agencies should be ready
for possible activation this afternoon and tonight.

In the hours before

Local storm report, Aug 10, 8:10 AM CDT, 4 hours 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
810 AM CDT THU AUG 10 2017

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

0806 AM     FLASH FLOOD      2 SSW WASHBURN          35.15N 101.59W
08/10/2017                   ARMSTRONG          TX   LAW ENFORCEMENT

            FLOODING HAS BEEN REPORTED ON COUNTY ROAD 2 AND FM
            1151.

&&

EVENT NUMBER AMA1700804

14

Local storm report, Aug 10, 8:22 AM CDT, 4 hours 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
822 AM CDT THU AUG 10 2017

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

0819 AM     FLASH FLOOD      6 SW AMARILLO           35.15N 101.89W
08/10/2017                   RANDALL            TX   NWS EMPLOYEE

            INTERSTATE 27 CLOSED WITH TRAFFIC BEING DIVERTED TO THE
            ACCESS ROADS. FLOODING HAS ALSO BEEN REPORTED IN LOW
            SPOTS ON INTERSTATE 40 THROUGH TOWN AS WELL AS MOST
            UNDERPASSES IN DOWNTOWN AMARILLO.

&&

EVENT NUMBER AMA1700805

14

Special weather statement, Aug 10, 12:40 PM CDT, 19 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
Aug 10, 1:50 AM CDT	Special Weather Statement	AMA	Dallam, Hartley	40 min
Aug 10, 2:36 AM CDT	Special Weather Statement	AMA	Hartley	39 min
Aug 10, 4:54 AM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
Aug 10, 6:32 AM CDT	Flash Flood Warning	AMA	Potter, Randall	3 hr
Aug 10, 7:53 AM CDT	Areal Flood Advisory	AMA	Oldham, Potter	3 hr
Aug 10, 8:07 AM CDT	Flash Flood Warning	AMA	Armstrong	3 hr
Aug 10, 4:08 PM CDT	Special Weather Statement	AMA	Oldham	67 min
Aug 10, 4:34 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	56 min
Aug 10, 5:16 PM CDT	Special Weather Statement	AMA	Hutchinson	59 min
Aug 10, 5:32 PM CDT	Special Weather Statement	AMA	Oldham	58 min
Aug 10, 5:35 PM CDT	Areal Flood Advisory	AMA	Hartley, Oldham	3 hr
Aug 10, 5:46 PM CDT	Special Weather Statement	AMA	Moore	59 min
Aug 10, 6:53 PM CDT	Special Weather Statement	AMA	Oldham	67 min
Aug 9, 7:12 PM CDT	Special Weather Statement	AMA	Cimarron	63 min
Aug 10, 12:14 PM CDT	Severe Thunderstorm Warning	AMA	Beaver, Texas	22 min
Aug 10, 12:40 PM CDT	Special Weather Statement	AMA	Beaver	35 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2017 Every severe thunderstorm warning in 2017

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.