Alert archive / Oklahoma / High Wind Warnings in 2021

High Wind Warning 2, NWS Norman, OK

May 7, 20214 counties in Oklahoma

NWS Norman, OK issued this high wind warning at May 7, 2021, 11:31 PM CDT for 4 counties in Oklahoma. It was in force for 82 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 7, 2021, 11:31 PM CDT (04:31 UTC)
Expired: May 8, 2021, 12:53 AM CDT
In force: 82 min
Issued by: NWS Norman, OK

Counties Alfalfa County, OK, Garfield County, OK, Grant County, OK, Major County, OK

The radar

The Vance AFB radar (KVNX), 21 km from the middle of the area, began a volume at 04:31 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.

What was reported inside it

Time	Report	Where	Remark
May 7, 11:32 PM CDT	NON-TSTM WND DMG	1 N Vance Air Force Bas, OK	SHINGLES BLOWN OFF.
May 7, 11:33 PM CDT	NON-TSTM WND DMG	1 E Drummond, OK	3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN.
May 7, 11:39 PM CDT	NON-TSTM WND GST 70	Vance Air Force Base, OK	CORRECTS PREVIOUS NON-TSTM WND GST REPORT FROM VANCE AIR FORCE BASE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Dodge City, (KDDC), launched 00:00Z, 4.5 hours before the alert went out and 209 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: 684 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 2461 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted.

853 
WWUS74 KOUN 080431
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
1131 PM CDT Fri May 7 2021

OKZ006-007-011-012-080700-
/O.NEW.KOUN.HW.W.0002.210508T0431Z-210508T0700Z/
Alfalfa-Grant-Major-Garfield-
Including the cities of Cherokee, Helena, Carmen, Medford, 
Pond Creek, Lamont, Wakita, Fairview, and Enid
1131 PM CDT Fri May 7 2021

...HIGH WIND WARNING IN EFFECT UNTIL 2 AM CDT SATURDAY...

* WHAT...Strong south to southwest winds of 50 to 70 mph.

* WHERE...Alfalfa, Grant, Major and Garfield Counties.

* WHEN...Until 2 AM CDT Saturday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

* ADDITIONAL DETAILS...Very strong winds from decaying
  thunderstorms will be possible across the warned area over the
  next couple of hours. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

1 follow-up statement

523 
WWUS74 KOUN 080553
NPWOUN

URGENT - WEATHER MESSAGE
National Weather Service Norman OK
1253 AM CDT Sat May 8 2021

OKZ006-007-011-012-080700-
/O.CAN.KOUN.HW.W.0002.000000T0000Z-210508T0700Z/
Alfalfa-Grant-Major-Garfield-
Including the cities of Cherokee, Helena, Carmen, Medford, 
Pond Creek, Lamont, Wakita, Fairview, and Enid
1253 AM CDT Sat May 8 2021

...HIGH WIND WARNING IS CANCELLED...

Wind speeds have diminished across north central Oklahoma,
therefore the high wind warning has been cancelled.

$$

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 7, 7:12 PM CDT	Special Weather Statement	OUN	Ellis	33 min
May 7, 7:14 PM CDT	Special Weather Statement	OUN	Woodward	31 min
May 7, 7:28 PM CDT	Special Weather Statement	OUN	Roger Mills	32 min
May 7, 7:58 PM CDT	Special Weather Statement	OUN	Ellis, Roger Mills	47 min
May 7, 8:39 PM CDT	Special Weather Statement	OUN	Dewey	36 min
May 7, 9:18 PM CDT	Special Weather Statement	OUN	Major	27 min
May 7, 9:47 PM CDT	Special Weather Statement	OUN	Major	28 min
May 7, 10:18 PM CDT	Special Weather Statement	OUN	Blaine, Kingfisher, Major	57 min
May 7, 11:15 PM CDT	Special Weather Statement	OUN	Blaine, Canadian, Garfield, Kingfisher, Major, Oklahoma and 1 more	45 min

Nearby

High Wind Warnings in Oklahoma, 2021 Every high wind 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.