Alert archive / Oklahoma / Red Flag Warnings in 2021
Red Flag Warning 7, NWS Norman, OK
NWS Norman, OK issued this red flag warning at Dec 10, 2021, 2:36 AM CST for 27 counties in Oklahoma; 6 counties in Texas. It took effect at Dec 10, 2021, 10:00 AM CST. It was in force for 8 hr. 6 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
- Dec 10, 2021, 2:36 AM CST (08:36 UTC)
- In effect from
- Dec 10, 2021, 10:00 AM CST
- Expired
- Dec 10, 2021, 6:00 PM CST
- In force
- 8 hr
- Issued by
- NWS Norman, OK
All 33 counties
Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton 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, Major County, OK, Noble County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Baylor County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 113 km from the middle of the area, began a volume at 08:35 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 |
|---|---|---|---|
| Dec 10, 11:09 AM CST | NON-TSTM WND GST 58 | 3 Nw Knox City, TX | |
| Dec 10, 11:25 AM CST | NON-TSTM WND GST 58 | 4 S Tipton, OK | |
| Dec 10, 12:28 PM CST | NON-TSTM WND GST 59 | 3 Nw Knox City, TX | |
| Dec 10, 3:35 PM CST | NON-TSTM WND GST 59 | 8 Wsw Arnett, OK | |
| Dec 10, 3:40 PM CST | NON-TSTM WND GST 61 | 8 Wsw Arnett, OK | |
| Dec 10, 5:08 PM CST | NON-TSTM WND GST 58 | Vance Air Force Base, OK | POST FRONTAL WIND GUSTS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 00:00Z, 8.6 hours before the alert went out and 261 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
- 2839 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
894 WWUS84 KOUN 100836 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 236 AM CST Fri Dec 10 2021 OKZ004>018-021>024-033>038-TXZ083>085-087-088-110000- /O.UPG.KOUN.FW.A.0004.211210T1600Z-211211T0000Z/ /O.NEW.KOUN.FW.W.0007.211210T1600Z-211211T0000Z/ Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield- Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Beckham-Washita- Caddo-Canadian-Harmon-Greer-Kiowa-Jackson-Tillman-Comanche- Hardeman-Foard-Wilbarger-Knox-Baylor- 236 AM CST Fri Dec 10 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 6 PM CST THIS EVENING FOR WARM TEMPERATURES, BREEZY WINDS, AND LOW RELATIVE HUMIDITY FOR WESTERN, NORTHERN, AND CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS... The National Weather Service in Norman has issued a Red Flag Warning, which is in effect from 10 AM this morning to 6 PM CST this evening. * TIMING...10am through 6pm * WINDS...Southwest 20 to 30 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 20 percent. * TEMPERATURES...Mid to upper 70s. * IMPACTS...Any fires that start in this environment will be very difficult to control. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures will contribute to extreme fire behavior. && $$ OKZ027-044-TXZ086-110000- /O.NEW.KOUN.FW.W.0007.211210T1600Z-211211T0000Z/ Grady-Cotton-Wichita- 236 AM CST Fri Dec 10 2021 ...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 6 PM CST THIS EVENING FOR WARM TEMPERATURES, BREEZY WINDS, AND LOW RELATIVE HUMIDITY FOR SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS... The National Weather Service in Norman has issued a Red Flag Warning for breezy winds and low relative humidity, which is in effect from 10 AM this morning to 6 PM CST this evening. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 24 percent. * TEMPERATURES...Upper 70s to near 80. * IMPACTS...Any fires that start in this environment will be very difficult to control. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures will contribute to extreme fire behavior. && $$ Mahale
1 follow-up statement
180 WWUS84 KOUN 102358 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 558 PM CST Fri Dec 10 2021 OKZ004>018-021>024-027-033>038-044-TXZ083>088-110100- /O.EXP.KOUN.FW.W.0007.000000T0000Z-211211T0000Z/ Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield- Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Beckham-Washita- Caddo-Canadian-Grady-Harmon-Greer-Kiowa-Jackson-Tillman-Comanche- Cotton-Hardeman-Foard-Wilbarger-Wichita-Knox-Baylor- 558 PM CST Fri Dec 10 2021 ...RED FLAG WARNING WILL EXPIRE AT 6 PM CST THIS EVENING... Cooling temperatures and increasing humidities will allow fire weather conditions to improve this evening and overnight. Some strong northerly winds gusts will be seen behind a cold front this evening, with winds weakening overnight. $$
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 2:22 AM CST | Wind Advisory | OUN | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 31 more | 16 hr |
Nearby
Red Flag Warnings in Oklahoma, 2021Red Flag Warnings in Texas, 2021Every red flag 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.