Alert archive / Oklahoma / Wind Advisories in 2021
Wind Advisory 12, NWS Norman, OK
NWS Norman, OK issued this wind advisory at Apr 9, 2021, 2:57 AM CDT for 8 counties in Texas; 37 counties in Oklahoma. It took effect at Apr 9, 2021, 12:00 PM CDT. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Apr 9, 2021, 2:57 AM CDT (07:57 UTC)
- In effect from
- Apr 9, 2021, 12:00 PM CDT
- Expired
- Apr 9, 2021, 11:00 PM CDT
- In force
- 11 hr
- Issued by
- NWS Norman, OK
All 45 counties
Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Pottawatomie County, OK, Roger Mills County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 109 km from the middle of the area, began a volume at 08:00 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, 8.0 hours before the alert went out and 98 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
- 2898 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
662 WWUS74 KOUN 090757 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 257 AM CDT Fri Apr 9 2021 OKZ004>006-009>011-014>016-021-022-033>036-092000- /O.NEW.KOUN.WI.Y.0012.210409T1700Z-210410T0100Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey- Custer-Beckham-Washita-Harmon-Greer-Kiowa-Jackson- Including the cities of Buffalo, Laverne, Alva, Cherokee, Helena, Carmen, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Cheyenne, Hammon, Seiling, Vici, Taloga, Leedey, Weatherford, Clinton, Elk City, Sayre, Cordell, Burns Flat, Sentinel, Hollis, Mangum, Granite, Hobart, Snyder, and Altus 257 AM CDT Fri Apr 9 2021 ...WIND ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS EVENING... * WHAT...North winds 25 to 35 mph with gusts up to 45 mph expected. * WHERE...Portions of northwest, southwest and western Oklahoma. * WHEN...From noon today to 8 PM CDT this evening. * 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. && $$
3 follow-up statements
016 WWUS74 KOUN 091913 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 213 PM CDT Fri Apr 9 2021 OKZ004>006-009>011-014>016-021-022-033>036-100100- /O.CON.KOUN.WI.Y.0012.000000T0000Z-210410T0100Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey- Custer-Beckham-Washita-Harmon-Greer-Kiowa-Jackson- Including the cities of Buffalo, Laverne, Alva, Cherokee, Helena, Carmen, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Cheyenne, Hammon, Seiling, Vici, Taloga, Leedey, Weatherford, Clinton, Elk City, Sayre, Cordell, Burns Flat, Sentinel, Hollis, Mangum, Granite, Hobart, Snyder, and Altus 213 PM CDT Fri Apr 9 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...North winds 25 to 35 mph with gusts up to 50 mph. * WHERE...Portions of northwest, southwest and western Oklahoma. * WHEN...Through 8 PM CDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
533 WWUS74 KOUN 092223 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 523 PM CDT Fri Apr 9 2021 OKZ007-008-012-013-017>020-023>030-037>040-044-045-TXZ083>090- 100400- /O.EXB.KOUN.WI.Y.0012.210409T2300Z-210410T0400Z/ Grant-Kay-Garfield-Noble-Blaine-Kingfisher-Logan-Payne-Caddo- Canadian-Oklahoma-Lincoln-Grady-McClain-Cleveland-Pottawatomie- Tillman-Comanche-Stephens-Garvin-Cotton-Jefferson-Hardeman-Foard- Wilbarger-Wichita-Knox-Baylor-Archer-Clay- Including the cities of Medford, Pond Creek, Lamont, Wakita, Ponca City, Blackwell, Enid, Perry, Watonga, Geary, Okeene, Kingfisher, Hennessey, Okarche, Guthrie, Stillwater, Anadarko, Hinton, Yukon, Concho, El Reno, Mustang, Oklahoma City, Chandler, Stroud, Prague, Meeker, Davenport, Wellston, Chickasha, Tuttle, Purcell, Newcastle, Blanchard, Norman, Moore, Shawnee, Frederick, Lawton, Duncan, Pauls Valley, Lindsay, Wynnewood, Walters, Temple, Waurika, Ringling, Ryan, Quanah, Crowell, Vernon, Sheppard AFB, Wichita Falls, Munday, Knox City, Seymour, Archer City, Holliday, Lakeside City, Scotland, and Henrietta 523 PM CDT Fri Apr 9 2021 ...WIND ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... * WHAT...North winds 25 to 30 mph with gusts up to 40 mph expected. * WHERE...Portions of central, northern, northwest, southern and southwest Oklahoma and northern Texas. * WHEN...Until 11 PM CDT this evening. * 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. && $$ OKZ004>006-009>011-014>016-021-022-033>036-100100- /O.CON.KOUN.WI.Y.0012.000000T0000Z-210410T0100Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey- Custer-Beckham-Washita-Harmon-Greer-Kiowa-Jackson- Including the cities of Buffalo, Laverne, Alva, Cherokee, Helena, Carmen, Shattuck, Arnett, Gage, Fargo, Woodward, Fairview, Cheyenne, Hammon, Seiling, Vici, Taloga, Leedey, Weatherford, Clinton, Elk City, Sayre, Cordell, Burns Flat, Sentinel, Hollis, Mangum, Granite, Hobart, Snyder, and Altus 523 PM CDT Fri Apr 9 2021 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... * WHAT...North winds 25 to 30 mph with gusts up to 45 mph. * WHERE...Portions of northwest, southwest and western Oklahoma. * WHEN...Until 8 PM CDT this evening. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. && $$
617 WWUS74 KOUN 100346 NPWOUN URGENT - WEATHER MESSAGE National Weather Service Norman OK 1046 PM CDT Fri Apr 9 2021 OKZ007-008-012-013-017>020-023>030-037>040-044-045-TXZ083>090- 100500- /O.EXP.KOUN.WI.Y.0012.000000T0000Z-210410T0400Z/ Grant-Kay-Garfield-Noble-Blaine-Kingfisher-Logan-Payne-Caddo- Canadian-Oklahoma-Lincoln-Grady-McClain-Cleveland-Pottawatomie- Tillman-Comanche-Stephens-Garvin-Cotton-Jefferson-Hardeman-Foard- Wilbarger-Wichita-Knox-Baylor-Archer-Clay- Including the cities of Medford, Pond Creek, Lamont, Wakita, Ponca City, Blackwell, Enid, Perry, Watonga, Geary, Okeene, Kingfisher, Hennessey, Okarche, Guthrie, Stillwater, Anadarko, Hinton, Yukon, Concho, El Reno, Mustang, Oklahoma City, Chandler, Stroud, Prague, Meeker, Davenport, Wellston, Chickasha, Tuttle, Purcell, Newcastle, Blanchard, Norman, Moore, Shawnee, Frederick, Lawton, Duncan, Pauls Valley, Lindsay, Wynnewood, Walters, Temple, Waurika, Ringling, Ryan, Quanah, Crowell, Vernon, Sheppard AFB, Wichita Falls, Munday, Knox City, Seymour, Archer City, Holliday, Lakeside City, Scotland, and Henrietta 1046 PM CDT Fri Apr 9 2021 ...WIND ADVISORY WILL EXPIRE AT 11 PM CDT THIS EVENING... Wind speeds have decreased below advisory level. Therefore, the wind advisory will be allowed to expire. $$
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 10:21 AM CDT | Special Weather Statement | OUN | Bryan | 24 min |
| Apr 9, 10:32 AM CDT | Special Weather Statement | OUN | Bryan | 28 min |
| Apr 9, 3:21 PM CDT | Special Weather Statement | OUN | Greer | 24 min |
| Apr 9, 3:28 PM CDT | Severe Thunderstorm Warning | OUN | Greer | 23 min |
| Apr 9, 3:35 PM CDT | Special Weather Statement | OUN | Washita | 40 min |
| Apr 9, 3:39 PM CDT | Special Weather Statement | OUN | Kingfisher | 36 min |
| Apr 9, 3:49 PM CDT | Special Weather Statement | OUN | Canadian | 26 min |
| Apr 9, 3:52 PM CDT | Special Weather Statement | OUN | Greer | 23 min |
| Apr 9, 3:57 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Grady | 48 min |
| Apr 9, 4:12 PM CDT | Special Weather Statement | OUN | Logan | 33 min |
| Apr 9, 4:13 PM CDT | Special Weather Statement | OUN | Washita | 32 min |
| Apr 9, 4:23 PM CDT | Special Weather Statement | OUN | Grant | 37 min |
| Apr 9, 4:25 PM CDT | Severe Thunderstorm Warning | OUN | Logan, Payne | 50 min |
| Apr 9, 4:29 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 16 min |
| Apr 9, 4:36 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Grady | 39 min |
| Apr 9, 4:52 PM CDT | Special Weather Statement | OUN | Kingfisher | 23 min |
| Apr 9, 4:53 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 52 min |
| Apr 9, 5:06 PM CDT | Severe Thunderstorm Warning | OUN | Grady | 39 min |
| Apr 9, 5:17 PM CDT | Severe Thunderstorm Warning | OUN | Logan, Noble, Payne | 43 min |
| Apr 9, 5:18 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher, Logan, Oklahoma | 42 min |
| Apr 9, 5:25 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Logan, Payne | 50 min |
| Apr 9, 5:31 PM CDT | Severe Thunderstorm Warning | OUN | Grady, McClain | 44 min |
| Apr 9, 5:36 PM CDT | Special Weather Statement | OUN | Pottawatomie | 24 min |
| Apr 9, 5:39 PM CDT | Special Weather Statement | OUN | Lincoln | 36 min |
| Apr 9, 5:48 PM CDT | Special Weather Statement | OUN | Lincoln | 27 min |
| Apr 9, 5:51 PM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 39 min |
| Apr 9, 5:57 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Logan, Oklahoma | 48 min |
| Apr 9, 6:05 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, Grady, McClain, Stephens | 40 min |
| Apr 9, 6:09 PM CDT | Special Weather Statement | OUN | Lincoln | 36 min |
| Apr 9, 6:22 PM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 27 min |
| Apr 9, 6:34 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 56 min |
| Apr 9, 6:38 PM CDT | Special Weather Statement | OUN | Pottawatomie | 52 min |
| Apr 9, 6:58 PM CDT | Special Weather Statement | OUN | Pottawatomie, Seminole | 47 min |
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.