Alert archive / Oklahoma / Red Flag Warnings in 2011

Red Flag Warning 9, NWS Tulsa, OK

October 29, 2011Craig County, Nowata County, Oklahoma

NWS Tulsa, OK issued this red flag warning at Oct 29, 2011, 12:51 PM CDT for Craig County, Nowata County, Oklahoma. It took effect at Oct 29, 2011, 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 29, 2011, 12:51 PM CDT (17:51 UTC)
In effect from
Oct 29, 2011, 1:00 PM CDT
Expired
Oct 29, 2011, 7:00 PM CDT
In force
6 hr
Issued by
NWS Tulsa, OK

Counties Craig County, OK, Nowata County, OK

The radar

The Tulsa radar (KINX), 69 km from the middle of the area, began a volume at 17:55 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, 5.9 hours before the alert went out and 144 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 2011-10-29Temperature 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, Springfield, MO at 12:00Z on 2011-10-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 square meters per square second.1939587897Sfc1 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
2477 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
-29 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.

138 
WWUS84 KTSA 291751
RFWTSA

FIRE WEATHER PRODUCT
NATIONAL WEATHER SERVICE TULSA OK
1251 PM CDT SAT OCT 29 2011

...BORDERLINE CRITICAL FIRE DANGER EXPECTED ACROSS FAR NORTHEAST OKLAHOMA...

.SOUTHWEST WINDS AROUND 20 MPH WITH HIGHER GUSTS WILL COMBINE WITH
LOW RELATIVE HUMDITIES NEAR 25 PERCENT TO YIELD CRITICAL FIRE
DANGER CONDITIONS OVER A SMALL PORTION OF NORTHEAST OKLAHOMA NEAR
THE KANSAS BORDER THIS AFTERNOON.

OKZ056-057-300000-
/O.NEW.KTSA.FW.W.0009.111029T1800Z-111030T0000Z/
NOWATA-CRAIG-
1251 PM CDT SAT OCT 29 2011

...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

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

FOR THE FOLLOWING COUNTIES...
 * IN OKLAHOMA...CRAIG AND NOWATA. 

HAZARDOUS WEATHER...
 * SOUTHWEST WINDS AROUND 20 MPH WITH HIGHER GUSTS WILL COMBINE
   WITH LOW RELATIVE HUMDITIES NEAR 25 PERCENT TO YIELD CRITICAL
   FIRE DANGER CONDITIONS OVER A SMALL PORTION OF NORTHEAST
   OKLAHOMA NEAR THE KANSAS BORDER THIS AFTERNOON.

 * RELATIVE HUMIDITIES AS LOW AS 25 PERCENT

 * STRONG WIND GUSTS AS HIGH AS 30 MPH

IMPACTS...
 * ANY FIRES THAT WERE TO GET GOING WOULD QUICKLY SPREAD OUT OF
   CONTROL AND ENDANGER LIVES AND PROPERTY.

DEFINITION...
 * A RED FLAG WARNING MEANS THAT A DANGEROUS COMBINATION OF 
   WEATHER CONDITIONS AND DRY VEGETATION IS EXPECTED WITHIN 24 
   HOURS...FAVORING RAPID GROWTH AND SPREAD OF ANY WILDFIRES. 
   THE PRIMARY WEATHER FACTORS INCLUDE STRONGER WINDS...LOWER 
   HUMIDITIES...AND WARMER TEMPERATURES.

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

&&

$$

Nearby

Red Flag Warnings in Oklahoma, 2011Every red flag warning in 2011

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.