Alert archive / Oklahoma / Red Flag Warnings in 2012

Red Flag Warning 7, NWS Tulsa, OK

March 6, 20127 counties in Oklahoma; 4 counties in Arkansas

NWS Tulsa, OK issued this red flag warning at Mar 6, 2012, 3:28 AM CST for 7 counties in Oklahoma; 4 counties in Arkansas. It took effect at Mar 6, 2012, 10:00 AM CST. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 6, 2012, 3:28 AM CST (09:28 UTC)
In effect from
Mar 6, 2012, 10:00 AM CST
Expired
Mar 6, 2012, 11:05 AM CST
In force
65 min
Issued by
NWS Tulsa, OK

Counties Benton County, AR, Carroll County, AR, Madison County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Haskell County, OK, Mayes County, OK, Ottawa County, OK

The radar

The Tulsa radar (KINX), 87 km from the middle of the area, began a volume at 09:26 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 00:00Z, 9.5 hours before the alert went out and 107 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 00:00Z on 2012-03-06Temperature 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 00:00Z on 2012-03-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 321 square meters per square second.193958Sfc1 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
3845 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
321 m²/s²
0-3 km storm-relative helicity
489 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.

463 
WWUS84 KTSA 060928
RFWTSA

FIRE WEATHER PRODUCT
NATIONAL WEATHER SERVICE TULSA OK
328 AM CST TUE MAR 6 2012


ARZ001-002-010-011-019-020-029-OKZ057-058-062-063-068-069-072-074-
076-062200-
/O.NEW.KTSA.FW.W.0007.120306T1600Z-120307T0100Z/
BENTON-CARROLL-WASHINGTON AR-MADISON-CRAWFORD-FRANKLIN-SEBASTIAN-
CRAIG-OTTAWA-MAYES-DELAWARE-CHEROKEE-ADAIR-SEQUOYAH-HASKELL-
LE FLORE-
328 AM CST TUE MAR 6 2012

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CST
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A RED FLAG 
WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CST 
THIS EVENING...

FOR THE FOLLOWING COUNTIES...
 * IN OKLAHOMA...DELAWARE...CHEROKEE...ADAIR...CRAIG...OTTAWA... 
   SEQUOYAH...LE FLORE...MAYES AND HASKELL. IN ARKANSAS...
   BENTON...SEBASTIAN...WASHINGTON...CARROLL... MADISON...
   CRAWFORD AND FRANKLIN. 

HAZARDOUS WEATHER...
 * STRONG SOUTH WINDS WILL DEVELOP EARLY THIS MORNING AND PERSIST
   THE DAY BEFORE DECREASING AFTER SUNSET. FIRE WEATHER CONDITIONS
   WILL WORSEN AS TEMPERATURES WARM...WITH FIRE BEHAVIOR BECOMING
   INCREASINGLY DANGEROUS THROUGH MID AFTERNOON.  

 * RELATIVE HUMIDITIES WILL FALL INTO THE LOW 20 PERCENT RANGE.

 * STRONG WINDS GUSTING 40 TO 50 MPH WILL PERSIST THROUGH THE DAY.

IMPACTS...
 * ANY FIRES WILL 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. 

 * 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
338 
WWUS84 KTSA 061705
RFWTSA

FIRE WEATHER PRODUCT
NATIONAL WEATHER SERVICE TULSA OK
1105 AM CST TUE MAR 6 2012

ARZ001-002-010-011-019-020-029-OKZ057-058-062-063-068-069-072-074-
076-061815-
/O.CAN.KTSA.FW.W.0007.000000T0000Z-120307T0100Z/
BENTON-CARROLL-WASHINGTON AR-MADISON-CRAWFORD-FRANKLIN-SEBASTIAN-
CRAIG-OTTAWA-MAYES-DELAWARE-CHEROKEE-ADAIR-SEQUOYAH-HASKELL-
LE FLORE-
1105 AM CST TUE MAR 6 2012

...RED FLAG WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN TULSA HAS CANCELLED THE RED 
FLAG WARNING...

FOR THE FOLLOWING COUNTIES...
 * IN OKLAHOMA...HASKELL...CHEROKEE...ADAIR...CRAIG... 
   SEQUOYAH...OTTAWA...LE FLORE...MAYES AND DELAWARE. IN 
   ARKANSAS...BENTON...SEBASTIAN...WASHINGTON...MADISON... 
   CARROLL...CRAWFORD AND FRANKLIN. 

 * HUMIDITIES ARE EXPECTED TO REMAIN ABOVE CRITICAL LEVELS SO RED
   FLAG CONDITIONS WILL NOT BE MET.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 5, 9:25 PM CSTWind AdvisoryTSAAdair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more22 hr

Nearby

Red Flag Warnings in Oklahoma, 2012Red Flag Warnings in Arkansas, 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.