Alert archive / Oklahoma / Red Flag Warnings in 2021
Red Flag Warning 5, NWS Norman, OK
NWS Norman, OK issued this red flag warning at Sep 25, 2021, 2:19 PM CDT for 8 counties in Oklahoma. It took effect at Sep 26, 2021, 1:00 PM CDT. It was in force for 6 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
- Sep 25, 2021, 2:19 PM CDT (19:19 UTC)
- In effect from
- Sep 26, 2021, 1:00 PM CDT
- Expired
- Sep 26, 2021, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Norman, OK
Counties Alfalfa County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Major County, OK, Woods County, OK, Woodward County, OK
The radar
The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 19:19 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
Dodge City, (KDDC), launched 12:00Z, 7.3 hours before the alert went out and 170 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
- 2460 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
700 WWUS84 KOUN 251919 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 219 PM CDT Sat Sep 25 2021 OKZ004>006-009>011-270000- /O.NEW.KOUN.FW.W.0005.210926T1800Z-210927T0000Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major- 219 PM CDT Sat Sep 25 2021 ...RED FLAG WARNING IN EFFECT SUNDAY AFTERNOON FOR PORTIONS OF NORTHWEST OKLAHOMA... The National Weather Service in Norman has issued a Red Flag Warning which is in effect from 1 PM to 7 PM CDT Sunday. * TIMING...1 PM to 7 PM Sunday. * WINDS...Southwest 20 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * TEMPERATURES...Up to 95. * 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. && $$
1 follow-up statement
936 WWUS84 KOUN 260745 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 245 AM CDT Sun Sep 26 2021 OKZ007-012-270000- /O.EXA.KOUN.FW.W.0005.210926T1800Z-210927T0000Z/ Grant-Garfield- 245 AM CDT Sun Sep 26 2021 ...RED FLAG WARNING IN EFFECT THIS AFTERNOON FOR PORTIONS OF NORTH CENTRAL OKLAHOMA... The National Weather Service in Norman has issued a Red Flag Warning which is in effect from 1 PM to 7 PM CDT Today. * TIMING...1 PM to 7 PM Sunday. * WINDS...Southwest 20 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 17 percent. * TEMPERATURES...Up to 95. * IMPACTS...Any fires that start in this environment will be very difficult to control. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures will contribute to extreme fire behavior. && $$ OKZ004>006-009>011-270000- /O.CON.KOUN.FW.W.0005.210926T1800Z-210927T0000Z/ Harper-Woods-Alfalfa-Ellis-Woodward-Major- 245 AM CDT Sun Sep 26 2021 ...RED FLAG WARNING REMAINS IN EFFECT THIS AFTERNOON FOR PORTIONS OF NORTHWEST OKLAHOMA... * TIMING...1 PM to 7 PM Sunday. * WINDS...Southwest 20 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * TEMPERATURES...Up to 95. * 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. && $$ Bunker
Nearby
Red Flag Warnings in Oklahoma, 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.