Alert archive / Oklahoma / Red Flag Warnings in 2021
Red Flag Warning 6, NWS Norman, OK
NWS Norman, OK issued this red flag warning at Oct 9, 2021, 2:20 AM CDT for 4 counties in Oklahoma. It took effect at Oct 9, 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
- Oct 9, 2021, 2:20 AM CDT (07:20 UTC)
- In effect from
- Oct 9, 2021, 1:00 PM CDT
- Expired
- Oct 9, 2021, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- NWS Norman, OK
Counties Ellis County, OK, Harper County, OK, Woods County, OK, Woodward County, OK
The radar
The Vance AFB radar (KVNX), 114 km from the middle of the area, began a volume at 07:22 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 00:00Z, 7.3 hours before the alert went out and 143 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
- 1 J/kg
- Mixed-layer CIN
- -483 J/kg
- Mixed-layer LCL
- 2488 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
649 WWUS84 KOUN 090720 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 220 AM CDT Sat Oct 9 2021 OKZ004-005-009-010-091530- /O.NEW.KOUN.FW.W.0006.211009T1800Z-211010T0000Z/ Harper-Woods-Ellis-Woodward- 220 AM CDT Sat Oct 9 2021 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING FOR northwestern Oklahoma. * TIMING...1 PM to 7 PM Saturday. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 17 percent. * TEMPERATURES...Up to 99 degrees F. 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 escessive temperatures will contribute to extreme fire behavior. && $$
1 follow-up statement
636 WWUS84 KOUN 091706 RFWOUN URGENT - FIRE WEATHER MESSAGE National Weather Service Norman OK 1206 PM CDT Sat Oct 9 2021 OKZ004-005-009-010-100000- /O.CON.KOUN.FW.W.0006.211009T1800Z-211010T0000Z/ Harper-Woods-Ellis-Woodward- 1206 PM CDT Sat Oct 9 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR NORTHWESTERN OKLAHOMA. * TIMING...1 PM to 7 PM Saturday. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 15 percent. * TEMPERATURES...Up to 100. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and excessive temperatures will contribute to extreme fire behavior. && $$
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.