Alert archive / Oklahoma / Red Flag Warnings in 2012

Red Flag Warning 3, NWS Norman, OK

February 21, 201218 counties in Oklahoma; 8 counties in Texas

NWS Norman, OK issued this red flag warning at Feb 21, 2012, 1:43 PM CST for 18 counties in Oklahoma; 8 counties in Texas. It was in force for 4 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
Feb 21, 2012, 1:43 PM CST (19:43 UTC)
Expired
Feb 21, 2012, 6:07 PM CST
In force
4 hr
Issued by
NWS Norman, OK
All 26 counties

Beckham County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, McClain County, OK, Stephens County, OK, Tillman County, OK, Washita 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), 34 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

Norman, OK (KOUN), launched 12:00Z, 7.7 hours before the alert went out and 140 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.

Skew-T log-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2012-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2012-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2722 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

985 
WWUS84 KOUN 211943
RFWOUN

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
143 PM CST TUE FEB 21 2012


OKZ021-022-033>038-044-TXZ083>089-220100-
/O.NEW.KOUN.FW.W.0003.120221T1943Z-120222T0100Z/
BECKHAM-WASHITA-HARMON-GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-
COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-
143 PM CST TUE FEB 21 2012

...RED FLAG WARNING IN EFFECT UNTIL 7 PM CST THIS EVENING FOR WINDY... 
DRY AND WARM CONDITIONS FOR SOUTHWEST OKLAHOMA AND WESTERN NORTH TEXAS...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 7 PM CST THIS EVENING. 

* WIND...SOUTHWEST WINDS OF 20 TO 30 MPH WITH HIGHER GUSTS.

* HUMIDITY...10 TO 20 PERCENT

* TEMPERATURE...65 TO 73 DEGREES

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FIRES MAY START EASILY AND SPREAD RAPIDLY. REPORT SMOKE OR FIRE
TO YOUR LOCAL FIRE DEPARTMENT.

&&

$$
2 follow-up statements
495 
WWUS84 KOUN 212046
RFWOUN

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
246 PM CST TUE FEB 21 2012

OKZ016-023-024-027>029-039-040-045-TXZ090-220100-
/O.EXA.KOUN.FW.W.0003.000000T0000Z-120222T0100Z/
CUSTER-CADDO-CANADIAN-GRADY-MCCLAIN-CLEVELAND-STEPHENS-GARVIN-
JEFFERSON-CLAY-
246 PM CST TUE FEB 21 2012

...RED FLAG WARNING IN EFFECT UNTIL 7 PM CST THIS EVENING FOR WINDY... 
DRY AND WARM CONDITIONS FOR PORTIONS OF CENTRAL... SOUTHERN AND
WESTERN OKLAHOMA AND WESTERN NORTH TEXAS...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 7 PM CST THIS EVENING. 

* WIND...SOUTHWEST WINDS OF 20 TO 30 MPH WITH HIGHER GUSTS.

* HUMIDITY...10 TO 20 PERCENT

* TEMPERATURE...65 TO 73 DEGREES

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FIRES MAY START EASILY AND SPREAD RAPIDLY. REPORT SMOKE OR FIRE
TO YOUR LOCAL FIRE DEPARTMENT.

&&

$$

OKZ021-022-033>038-044-TXZ083>089-220100-
/O.CON.KOUN.FW.W.0003.000000T0000Z-120222T0100Z/
BECKHAM-WASHITA-HARMON-GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-
COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-
246 PM CST TUE FEB 21 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CST THIS EVENING
FOR WINDY... DRY AND WARM CONDITIONS FOR PORTIONS OF SOUTHWEST
OKLAHOMA AND WESTERN NORTH TEXAS...

* WIND...SOUTHWEST WINDS OF 20 TO 30 MPH WITH HIGHER GUSTS.

* HUMIDITY...10 TO 20 PERCENT

* TEMPERATURE...65 TO 73 DEGREES

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FIRES MAY START EASILY AND SPREAD RAPIDLY. REPORT SMOKE OR FIRE
TO YOUR LOCAL FIRE DEPARTMENT.

&&

$$
110 
WWUS84 KOUN 220007
RFWOUN

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
607 PM CST TUE FEB 21 2012



OKZ016-021>024-027>029-033>040-044-045-TXZ083>090-220115-
/O.CAN.KOUN.FW.W.0003.000000T0000Z-120222T0100Z/
CUSTER-BECKHAM-WASHITA-CADDO-CANADIAN-GRADY-MCCLAIN-CLEVELAND-
HARMON-GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-STEPHENS-GARVIN-
COTTON-JEFFERSON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-
ARCHER-CLAY-
607 PM CST TUE FEB 21 2012

...RED FLAG WARNING IS CANCELLED...

WINDS WILL CONTINUE TO DIMINISH THIS EVENING AND RELATIVE HUMIDITY
WILL INCREASE QUICKLY. 

A BREEZY SOUTHWEST AND WEST WIND...VERY WARM TEMPERATURES AND LOW
HUMIDITY ARE EXPECTED AGAIN WEDNESDAY. THIS WILL ENHANCE FIRE
WEATHER CONDITIONS.

$$

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 20, 6:25 PM CSTSpecial Weather StatementOUNAtoka, Bryan35 min
Feb 20, 7:01 PM CSTSpecial Weather StatementOUNBryan29 min

Nearby

Red Flag Warnings in Oklahoma, 2012Red Flag Warnings in Texas, 2012Every red flag warning in 2012

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.