Alert archive / Oklahoma / Wind Advisories in 2021
Wind Advisory 10, NWS Norman, OK
NWS Norman, OK issued this wind advisory at Apr 7, 2021, 12:06 AM CDT for 27 counties in Oklahoma; Foard County, Hardeman County, Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Apr 7, 2021, 12:06 AM CDT (05:06 UTC)
- Expired
- Apr 7, 2021, 3:39 AM CDT
- In force
- 4 hr
- Issued by
- NWS Norman, OK
All 29 counties
Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Foard County, TX, Hardeman County, TX
The radar
The Vance AFB radar (KVNX), 122 km from the middle of the area, began a volume at 05:07 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 00:00Z, 5.1 hours before the alert went out and 125 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
- 963 J/kg
- Mixed-layer CIN
- -169 J/kg
- Mixed-layer LCL
- 1313 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 185 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 7.6
The text
As transmitted.
896 WWUS74 KOUN 070506 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 1206 AM CDT Wed Apr 7 2021 OKZ004>025-027-033>036-TXZ083-084-071100- /O.NEW.KOUN.WI.Y.0010.210407T0506Z-210407T1100Z/ Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield- Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne- Beckham-Washita-Caddo-Canadian-Oklahoma-Grady-Harmon-Greer-Kiowa- Jackson-Hardeman-Foard- Including the cities of Buffalo, Laverne, Alva, Cherokee, Helena, Carmen, Medford, Pond Creek, Lamont, Wakita, Ponca City, Blackwell, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Enid, Perry, Cheyenne, Hammon, Seiling, Vici, Taloga, Leedey, Weatherford, Clinton, Watonga, Geary, Okeene, Kingfisher, Hennessey, Okarche, Guthrie, Stillwater, Elk City, Sayre, Cordell, Burns Flat, Sentinel, Anadarko, Hinton, Yukon, Concho, El Reno, Mustang, Oklahoma City, Chickasha, Tuttle, Hollis, Mangum, Granite, Hobart, Snyder, Altus, Quanah, and Crowell 1206 AM CDT Wed Apr 7 2021 ...WIND ADVISORY IN EFFECT UNTIL 6 AM CDT EARLY THIS MORNING... * WHAT...South winds shifting to the north. Gusts over 45 mph * WHERE...Portions of central, northern, northwest, southwest and western Oklahoma and northern Texas. * WHEN...Until 6 AM CDT early this morning. * 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. && $$
1 follow-up statement
553 WWUS74 KOUN 070839 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 339 AM CDT Wed Apr 7 2021 OKZ004>025-027-033>036-TXZ083-084-070945- /O.CAN.KOUN.WI.Y.0010.000000T0000Z-210407T1100Z/ Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield- Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne- Beckham-Washita-Caddo-Canadian-Oklahoma-Grady-Harmon-Greer-Kiowa- Jackson-Hardeman-Foard- Including the cities of Buffalo, Laverne, Alva, Cherokee, Helena, Carmen, Medford, Pond Creek, Lamont, Wakita, Ponca City, Blackwell, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Enid, Perry, Cheyenne, Hammon, Seiling, Vici, Taloga, Leedey, Weatherford, Clinton, Watonga, Geary, Okeene, Kingfisher, Hennessey, Okarche, Guthrie, Stillwater, Elk City, Sayre, Cordell, Burns Flat, Sentinel, Anadarko, Hinton, Yukon, Concho, El Reno, Mustang, Oklahoma City, Chickasha, Tuttle, Hollis, Mangum, Granite, Hobart, Snyder, Altus, Quanah, and Crowell 339 AM CDT Wed Apr 7 2021 ...WIND ADVISORY IS CANCELLED... Strong gusty winds behind a cold front have weakened some this morning. Therefore, the advisory has been cancelled. Wind gusts of 30 to 35 mph will still be possible this morning. $$
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 2:11 AM CDT | Special Weather Statement | OUN | Kingfisher | 34 min |
| Apr 7, 9:55 AM CDT | Wind Advisory | OUN | Beckham, Custer, Dewey, Ellis, Greer, Harmon and 9 more | 7 hr |
Nearby
Wind Advisories in Oklahoma, 2021Wind Advisories in Texas, 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.