Alert archive / Oklahoma / Red Flag Warnings in 2012

Red Flag Warning 10, NWS Tulsa, OK

August 22, 20127 counties in Oklahoma

NWS Tulsa, OK issued this red flag warning at Aug 22, 2012, 1:03 PM CDT for 7 counties in Oklahoma. 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
Aug 22, 2012, 1:03 PM CDT (18:03 UTC)
Expired
Aug 22, 2012, 9:00 PM CDT
In force
8 hr
Issued by
NWS Tulsa, OK

Counties Craig County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 46 km from the middle of the area, began a volume at 18:07 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

Springfield, MO (KSGF), launched 12:00Z, 6.1 hours before the alert went out and 163 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, Springfield, MO at 12:00Z on 2012-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 joules per kilogram.LCLLFCEL10008507005003002001001 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, Springfield, MO at 12:00Z on 2012-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -59 square meters per square second.1939Sfc1 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
9 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
1953 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-59 m²/s²
0-3 km storm-relative helicity
64 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.

194 
WWUS84 KTSA 221803
RFWTSA

FIRE WEATHER PRODUCT
NATIONAL WEATHER SERVICE TULSA OK
103 PM CDT WED AUG 22 2012

...CRITICAL FIRE DANGER NORTH OF HIGHWAY 412 IN NORTHEAST OKLAHOMA...

.DRY AND BREEZY CONDITIONS WILL ENHANCE THE FIRE THREAT THIS AFTERNOON AND EVENING.

OKZ054>059-061-062-230200-
/O.NEW.KTSA.FW.W.0010.120822T1803Z-120823T0200Z/
OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-ROGERS-MAYES-
103 PM CDT WED AUG 22 2012

...RED FLAG WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG 
WARNING...WHICH IS IN EFFECT UNTIL 9 PM CDT THIS EVENING...

FOR THE FOLLOWING COUNTIES...
 * IN OKLAHOMA...WASHINGTON...OSAGE...CRAIG...NOWATA...PAWNEE... 
   OTTAWA...ROGERS AND MAYES. 

HAZARDOUS WEATHER...
 * RELATIVE HUMIDITY VALUES OF 20 TO 25 PERCENT ACROSS NORTHEAST
   OKLAHOMA.

 * SOUTH WINDS OF 10 TO 20 MILES AN HOUR WITH HIGHER GUST.

 * SPREAD INDEX VALUES OF 50 TO 60.

IMPACTS...
 * FIRES WILL SPREAD QUICKLY AND MAKE SUPPRESSION EFFORTS DIFFICULT
   AT BEST. FIRES MAY ENDANGER LIVES AND PROPERTY. 

DEFINITION...
 * A RED FLAG WARNING MEANS THAT A DANGEROUS COMBINATION OF 
   WEATHER CONDITIONS AND DRY VEGETATION IS EXPECTED...
   FAVORING RAPID GROWTH AND SPREAD OF ANY WILDFIRES. 
   THE PRIMARY WEATHER FACTORS INCLUDE WIND AND LOW HUMIDITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
 * DISPOSE OF CIGARETTES PROPERLY AND AVOID ACTIVITIES THAT 
   COULD START FIRES. 

 * STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR 
   TELEVISION FOR THE LATEST INFORMATION CONCERNING THIS WEATHER 
   EVENT. ADDITIONAL WEATHER INFORMATION CAN ALSO BE FOUND AT: 
   WEATHER.GOV/TULSA. 

&&

$$
1 follow-up statement
262 
WWUS84 KTSA 230208
RFWTSA

FIRE WEATHER PRODUCT
NATIONAL WEATHER SERVICE TULSA OK
908 PM CDT WED AUG 22 2012

OKZ054>059-061-062-230315-
/O.EXP.KTSA.FW.W.0010.000000T0000Z-120823T0200Z/
OSAGE-WASHINGTON OK-NOWATA-CRAIG-OTTAWA-PAWNEE-ROGERS-MAYES-
908 PM CDT WED AUG 22 2012

...RED FLAG WARNING HAS EXPIRED...

THE RED FLAG WARNING IS NO LONGER IN EFFECT...

FOR THE FOLLOWING COUNTIES...
 * IN OKLAHOMA...WASHINGTON...OSAGE...CRAIG...NOWATA...PAWNEE... 
   OTTAWA...ROGERS AND MAYES. 

 * THE RED FLAG WARNING THAT WAS IN EFFECT HAS EXPIRED

HAZARDOUS WEATHER...
 * WIND SPEEDS WILL REMAIN LESS THAN 10 MPH AND HUMIDITY LEVELS
   WILL CONTINUE TO RISE OVERNIGHT. WINDS WILL INCREASE ACROSS THE
   AREA AGAIN THURSDAY AFTERNOON...THOUGH HUMIDITY LEVELS ARE
   EXPECTED TO BE A LITTLE HIGHER.

&&

$$

Nearby

Red Flag Warnings in Oklahoma, 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.