Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 37, NWS Amarillo, TX

May 7, 2021Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at May 7, 2021, 4:55 PM CDT for Beaver 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 7, 2021, 4:55 PM CDT (21:55 UTC)
Expired: May 7, 2021, 5:41 PM CDT
In force: 46 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 107 km from the middle of the area, began a volume at 21:56 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, 9.9 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1488 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 674 m²/s²
0-3 km storm-relative helicity: 886 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

586 
WUUS54 KAMA 072155
SVRAMA
OKC007-072300-
/O.NEW.KAMA.SV.W.0037.210507T2155Z-210507T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Amarillo TX
455 PM CDT Fri May 7 2021

The National Weather Service in Amarillo has issued a

* Severe Thunderstorm Warning for...
  Northern Beaver County in the Panhandle of Oklahoma...

* Until 600 PM CDT.

* At 455 PM CDT, a severe thunderstorm was located 4 miles south of
  Floris, or 8 miles west of Beaver, moving east at 35 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.

* Locations impacted include...
  Beaver, Forgan, Knowles, Mocane and Floris. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3674 10009 3670 10074 3690 10077 3700 10020
      3700 10016
TIME...MOT...LOC 2155Z 259DEG 29KT 3681 10067 

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

Guerrero

1 follow-up statement

909 
WWUS54 KAMA 072241
SVSAMA

Severe Weather Statement
National Weather Service Amarillo TX
541 PM CDT Fri May 7 2021

OKC007-072251-
/O.CAN.KAMA.SV.W.0037.000000T0000Z-210507T2300Z/
Beaver OK-
541 PM CDT Fri May 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN BEAVER COUNTY IS
CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3674 10009 3670 10074 3690 10077 3700 10020
      3700 10016
TIME...MOT...LOC 2238Z 259DEG 29KT 3688 10021 

$$

Guerrero

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 1:23 PM CDT	Special Weather Statement	AMA	Cimarron	37 min
May 7, 1:33 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	57 min
May 7, 2:22 PM CDT	Special Weather Statement	AMA	Cimarron	23 min
May 7, 2:42 PM CDT	Fire Weather Watch	AMA	Cimarron	13 hr
May 7, 2:47 PM CDT	Special Weather Statement	AMA	Texas	28 min
May 7, 2:50 PM CDT	Severe Thunderstorm Warning	AMA	Texas	55 min
May 7, 3:27 PM CDT	Special Weather Statement	AMA	Cimarron	63 min
May 7, 3:42 PM CDT	Special Weather Statement	AMA	Texas	33 min
May 7, 3:53 PM CDT	Special Weather Statement	AMA	Cimarron	67 min
May 7, 3:58 PM CDT	Severe Thunderstorm Warning	AMA	Texas	32 min
May 7, 4:49 PM CDT	Special Weather Statement	AMA	Beaver	56 min
May 7, 5:43 PM CDT	Special Weather Statement	AMA	Beaver	32 min

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.