Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 217, NWS Amarillo, TX

July 18, 2021Beaver County, Texas County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 18, 2021, 3:47 PM CDT for Beaver County, Texas County, Oklahoma. It was in force for 58 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: Jul 18, 2021, 3:47 PM CDT (20:47 UTC)
Expired: Jul 18, 2021, 4:45 PM CDT
In force: 58 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Beaver County, OK, Texas County, OK

The radar

The Dodge City radar (KDDC), 119 km from the middle of the area, began a volume at 20:51 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 12:00Z, 8.8 hours before the alert went out and 123 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: 525 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 1199 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

681 
WUUS54 KAMA 182047
SVRAMA
OKC007-139-182145-
/O.NEW.KAMA.SV.W.0217.210718T2047Z-210718T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
347 PM CDT Sun Jul 18 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Beaver County in the Panhandle of Oklahoma...
  East central Texas County in the Panhandle of Oklahoma...

* Until 445 PM CDT.

* At 347 PM CDT, severe thunderstorms were located along a line
  extending from 3 miles north of Turpin to 3 miles west of Beaver to
  9 miles southwest of Knowles, moving southwest at 20 mph.

  HAZARD...60 mph wind gusts and nickel size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor damage to roofs, siding, and trees is possible.

* Locations impacted include...
  Beaver, Forgan, Elmwood, Bryans Corner, Baker, Adams, Boyd, Mocane,
  Turpin, Slapout, Floris and Balko.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3698 10064 3692 10041 3682 10012 3651 10009
      3655 10077 3675 10117 3700 10093
TIME...MOT...LOC 2047Z 026DEG 16KT 3692 10089 3683 10059 3676 10030 

HAIL...0.88IN
WIND...60MPH
 
$$

Ward

4 follow-up statements

748 
WWUS54 KAMA 182059
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
359 PM CDT Sun Jul 18 2021

OKC007-139-182145-
/O.CON.KAMA.SV.W.0217.000000T0000Z-210718T2145Z/
Beaver OK-Texas OK-
359 PM CDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR BEAVER AND EAST CENTRAL TEXAS COUNTIES...

At 357 PM CDT, severe thunderstorms were located along a line
extending from near Turpin to 4 miles west of Beaver to 10 miles 
southwest of Knowles, moving southwest at 20 mph. Another storm was 
located near Boyd.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. Hail 
         damage to vehicles is expected.

Locations impacted include...
Beaver, Forgan, Elmwood, Bryans Corner, Baker, Adams, Boyd, Mocane,
Turpin, Slapout, Floris and Balko.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3694 10068 3688 10041 3682 10012 3651 10009
      3655 10077 3675 10117 3700 10093
TIME...MOT...LOC 2057Z 026DEG 16KT 3687 10083 3680 10061 3674 10030 

HAIL...1.00IN
WIND...60MPH
 
$$

Ward

517 
WWUS54 KAMA 182107
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
407 PM CDT Sun Jul 18 2021

OKC007-139-182145-
/O.CON.KAMA.SV.W.0217.000000T0000Z-210718T2145Z/
Beaver OK-Texas OK-
407 PM CDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHERN BEAVER AND EAST CENTRAL TEXAS COUNTIES...

At 407 PM CDT, a severe thunderstorm was located over Boyd, or 18
miles west of Beaver, moving southwest at 5 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. 
         People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles.

Locations impacted include...
Elmwood, Bryans Corner, Baker, Adams, Boyd, Turpin, Slapout and
Balko.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 3687 10077 3681 10051 3672 10011 3651 10009
      3655 10077 3675 10117 3693 10100
TIME...MOT...LOC 2107Z 025DEG 6KT 3672 10083 

HAIL...1.50IN
WIND...60MPH
 
$$

Ward

284 
WWUS54 KAMA 182114
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
414 PM CDT Sun Jul 18 2021

OKC007-139-182145-
/O.CON.KAMA.SV.W.0217.000000T0000Z-210718T2145Z/
Beaver OK-Texas OK-
414 PM CDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHERN BEAVER AND EAST CENTRAL TEXAS COUNTIES...

At 413 PM CDT, a severe thunderstorm was located over Boyd, or 18 
miles west of Beaver, moving southwest at 5 mph. Other storms were 
just north of Slapout. 

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...Expect some tree damage. Damage is likely to mobile homes, 
         roofs, and outbuildings. People and animals outdoors will 
         be injured. Expect hail damage to roofs, siding, windows, 
         and vehicles. Hail may accumulate on roadways causing 
         hazardous travel.

Locations impacted include...
Elmwood, Bryans Corner, Baker, Adams, Boyd, Turpin, Slapout and
Balko.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 3687 10077 3681 10051 3672 10011 3651 10009
      3655 10077 3675 10117 3693 10100
TIME...MOT...LOC 2113Z 025DEG 6KT 3671 10084 

HAIL...1.50IN
WIND...70MPH
 
$$

Ward

192 
WWUS54 KAMA 182126
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
426 PM CDT Sun Jul 18 2021

OKC007-139-182145-
/O.CON.KAMA.SV.W.0217.000000T0000Z-210718T2145Z/
Beaver OK-Texas OK-
426 PM CDT Sun Jul 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHERN BEAVER AND EAST CENTRAL TEXAS COUNTIES...

At 426 PM CDT, a severe thunderstorm was located near Bryans Corner,
or 18 miles north of Perryton, moving southwest at 20 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to roofs, siding, and trees is possible. Hail 
         damage to vehicles is expected. Hail may accumulate on 
         roadways causing hazardous travel.

Locations impacted include...
Elmwood, Slapout, Bryans Corner, Balko, Adams and Boyd. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

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

&&

LAT...LON 3679 10085 3673 10050 3672 10011 3651 10009
      3655 10077 3675 10117 3687 10105
TIME...MOT...LOC 2126Z 026DEG 16KT 3666 10087 

HAIL...1.00IN
WIND...60MPH
 
$$

Ward

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 3:26 AM CDT	Areal Flood Advisory	AMA	Beaver	3 hr
Jul 18, 3:26 PM CDT	Special Weather Statement	AMA	Beaver	34 min
Jul 18, 4:23 PM CDT	Severe Thunderstorm Warning	AMA	Beaver, Texas	67 min
Jul 18, 5:55 PM CDT	Special Weather Statement	AMA	Cimarron	35 min
Jul 18, 5:56 PM CDT	Special Weather Statement	AMA	Cimarron	34 min
Jul 18, 6:29 PM CDT	Special Weather Statement	AMA	Cimarron	46 min
Jul 18, 6:35 PM CDT	Areal Flood Advisory	AMA	Cimarron	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2021 Every severe thunderstorm warning 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.