Alert archive / Oklahoma / Wind Advisories in 2021
Wind Advisory 11, NWS Norman, OK
NWS Norman, OK issued this wind advisory at Apr 7, 2021, 9:55 AM CDT for 15 counties in Oklahoma. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 7, 2021, 9:55 AM CDT (14:55 UTC)
- Expired
- Apr 7, 2021, 5:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Norman, OK
Counties Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK
The radar
The Altus AFB radar (KFDR), 140 km from the middle of the area, began a volume at 14:53 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
Norman, OK (KOUN), launched 12:00Z, 2.9 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 918 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
853 WWUS74 KOUN 071455 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 955 AM CDT Wed Apr 7 2021 OKZ004-005-009>011-014-015-072200- /O.NEW.KOUN.WI.Y.0011.210407T1455Z-210407T2200Z/ Harper-Woods-Ellis-Woodward-Major-Roger Mills-Dewey- Including the cities of Buffalo, Laverne, Alva, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Cheyenne, Hammon, Seiling, Vici, Taloga, and Leedey 955 AM CDT Wed Apr 7 2021 ...WIND ADVISORY IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON... * WHAT...Northwest winds 30 to 35 mph with gusts up to 45 mph. * WHERE...Harper, Woods, Ellis, Woodward, Major, Roger Mills and Dewey Counties. * WHEN...Until 5 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
2 follow-up statements
179 WWUS74 KOUN 071846 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 146 PM CDT Wed Apr 7 2021 OKZ004-005-009>011-014-015-072200- /O.CON.KOUN.WI.Y.0011.000000T0000Z-210407T2200Z/ Harper-Woods-Ellis-Woodward-Major-Roger Mills-Dewey- Including the cities of Buffalo, Laverne, Alva, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Cheyenne, Hammon, Seiling, Vici, Taloga, and Leedey 146 PM CDT Wed Apr 7 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON... * WHAT...Northwest winds 25 to 35 mph with gusts up to 45 mph. * WHERE...Ellis, Dewey, Roger Mills, Harper, Woods, Major and Woodward Counties. * WHEN...Until 5 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
219 WWUS74 KOUN 071901 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 201 PM CDT Wed Apr 7 2021 OKZ016-021-022-033>037-072200- /O.EXA.KOUN.WI.Y.0011.000000T0000Z-210407T2200Z/ Custer-Beckham-Washita-Harmon-Greer-Kiowa-Jackson-Tillman- Including the cities of Weatherford, Clinton, Elk City, Sayre, Cordell, Burns Flat, Sentinel, Hollis, Mangum, Granite, Hobart, Snyder, Altus, and Frederick 201 PM CDT Wed Apr 7 2021 ...WIND ADVISORY IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON... * WHAT...Northwest winds 25 to 30 mph with gusts up to 45 mph. * WHERE...Custer, Beckham, Washita, Harmon, Greer, Kiowa, Jackson and Tillman Counties. * WHEN...Until 5 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$ OKZ004-005-009>011-014-015-072200- /O.CON.KOUN.WI.Y.0011.000000T0000Z-210407T2200Z/ Harper-Woods-Ellis-Woodward-Major-Roger Mills-Dewey- Including the cities of Buffalo, Laverne, Alva, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Cheyenne, Hammon, Seiling, Vici, Taloga, and Leedey 201 PM CDT Wed Apr 7 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON... * WHAT...Northwest winds 25 to 30 mph with gusts up to 45 mph. * WHERE...Woods, Ellis, Dewey, Roger Mills, Harper, Major and Woodward Counties. * WHEN...Until 5 PM CDT this afternoon. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 12:06 AM CDT | Wind Advisory | OUN | Alfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 21 more | 4 hr |
| Apr 7, 2:11 AM CDT | Special Weather Statement | OUN | Kingfisher | 34 min |
Nearby
Wind Advisories in Oklahoma, 2021Every wind advisory 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.