Alert archive / Oklahoma / Red Flag Warnings in 2021
Red Flag Warning 8, NWS Norman, OK
NWS Norman, OK issued this red flag warning at Dec 11, 2021, 1:43 PM CST for 18 counties in Oklahoma; 6 counties in Texas. It took effect at Dec 12, 2021, 11:00 AM CST. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 11, 2021, 1:43 PM CST (19:43 UTC)
- In effect from
- Dec 12, 2021, 11:00 AM CST
- Expired
- Dec 12, 2021, 7:20 PM CST
- In force
- 8 hr
- Issued by
- NWS Norman, OK
All 24 counties
Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo 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, 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), 97 km from the middle of the area, began a volume at 19:49 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 7.7 hours before the alert went out and 227 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
- 1839 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- -166 m²/s²
- 0-3 km storm-relative helicity
- -159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
019 WWUS84 KOUN 111943 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 143 PM CST Sat Dec 11 2021 OKZ004>006-009>011-014>017-021>023-033>036-120345- /O.UPG.KOUN.FW.A.0005.211212T1700Z-211213T0200Z/ /O.NEW.KOUN.FW.W.0008.211212T1700Z-211213T0200Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey- Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Jackson- 143 PM CST Sat Dec 11 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM CST SUNDAY FOR BREEZY WINDS AND LOW RELATIVE HUMIDITY FOR WESTERN OKLAHOMA... The National Weather Service in Norman has issued a Red Flag Warning for breezy winds and low relative humidity, which is in effect from 11 AM to 8 PM CST Sunday. The Fire Weather Watch is no longer in effect. * TIMING...Late morning into early evening. * WINDS...South 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 11 percent. * TEMPERATURES...Mid to upper 60s. 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. && $$ OKZ007-012-018-024-120345- /O.NEW.KOUN.FW.A.0006.211212T1700Z-211213T0200Z/ Grant-Garfield-Kingfisher-Canadian- 143 PM CST Sat Dec 11 2021 ...FIRE WEATHER WATCH IN EFFECT FROM 11 AM TO 8 PM SUNDAY FOR BREEZY WINDS AND LOW RELATIVE HUMIDITY FOR PART OF NORTH CENTRAL OKLAHOMA... The National Weather Service in Norman has issued a Fire Weather Watch for breezy winds and low relative humidity, which is in effect from from 11 AM to 8 PM Sunday. * WINDS...South 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 19 percent. * TEMPERATURES...Lower 60s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$
2 follow-up statements
261 WWUS84 KOUN 120739 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 139 AM CST Sun Dec 12 2021 OKZ007-012-018-024-120845- /O.CAN.KOUN.FW.A.0006.211212T1700Z-211213T0200Z/ Grant-Garfield-Kingfisher-Canadian- 139 AM CST Sun Dec 12 2021 ...FIRE WEATHER WATCH IS CANCELLED FOR BREEZY WINDS AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTH CENTRAL OKLAHOMA... The National Weather Service in Norman has cancelled the Fire Weather Watch. Near critical to critical fire weather conditions are not expected today across north central Oklahoma. Nevertheless, conditions will remain favorable for the development of grass fires due to elevated fire weather conditions. Outdoor burning and activities that cause open sparks or flames are discouraged. $$ OKZ037-TXZ083>088-130200- /O.EXA.KOUN.FW.W.0008.211212T1700Z-211213T0200Z/ Tillman-Hardeman-Foard-Wilbarger-Wichita-Knox-Baylor- 139 AM CST Sun Dec 12 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CST THIS EVENING FOR BREEZY WINDS AND LOW RELATIVE HUMIDITY FOR PARTS OF NORTH TEXAS... The National Weather Service in Norman has issued a Red Flag Warning for breezy winds and low relative humidity, which is in effect from 11 AM this morning to 8 PM CST this evening. * TIMING...Late morning into early evening. * WINDS...South 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 13 percent. * TEMPERATURES...Mid to upper 60s. * IMPACTS...Any fires that start in this environment will be very difficult to control. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures will contribute to extreme fire behavior. && $$ OKZ004>006-009>011-014>017-021>023-033>036-130200- /O.CON.KOUN.FW.W.0008.211212T1700Z-211213T0200Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey- Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Jackson- 139 AM CST Sun Dec 12 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CST THIS EVENING FOR BREEZY WINDS AND LOW RELATIVE HUMIDITY FOR WESTERN OKLAHOMA... * TIMING...Late morning into early evening. * WINDS...South 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * TEMPERATURES...Mid to upper 60s. * 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. && $$ Mahale
998 WWUS84 KOUN 130120 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 720 PM CST Sun Dec 12 2021 OKZ004>006-009>011-014>017-021>023-033>037-TXZ083>088-130230- /O.CAN.KOUN.FW.W.0008.000000T0000Z-211213T0200Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major-Roger Mills-Dewey- Custer-Blaine-Beckham-Washita-Caddo-Harmon-Greer-Kiowa-Jackson- Tillman-Hardeman-Foard-Wilbarger-Wichita-Knox-Baylor- 720 PM CST Sun Dec 12 2021 ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Norman has cancelled the Red Flag Warning. $$
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 11, 2:53 AM CST | Fire Weather Watch | OUN | Alfalfa, Beckham, Blaine, Caddo, Custer, Dewey and 11 more | 11 hr |
| Dec 11, 1:43 PM CST | Fire Weather Watch | OUN | Canadian, Garfield, Grant, Kingfisher | 12 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.