Alert archive / Georgia / Red Flag Warnings in 2009

Red Flag Warning 74, NWS Atlanta, GA

April 24, 200925 counties in Georgia

NWS Atlanta, GA issued this red flag warning at Apr 24, 2009, 4:38 AM EDT for 25 counties in Georgia. It took effect at Apr 24, 2009, 2:00 PM EDT. 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
Apr 24, 2009, 4:38 AM EDT (08:38 UTC)
In effect from
Apr 24, 2009, 2:00 PM EDT
Expired
Apr 24, 2009, 8:00 PM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
All 25 counties

Chattahoochee County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Dooly County, GA, Fayette County, GA, Harris County, GA, Heard County, GA, Houston County, GA, Lamar County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Muscogee County, GA, Peach County, GA, Pike County, GA, Schley County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Troup County, GA, Upson County, GA, Webster County, GA

The radar

The Atlanta radar (KFFC), 81 km from the middle of the area, began a volume at 08:38 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 8.6 hours before the alert went out and 81 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, Peachtre/Fal Fld, GA at 00:00Z on 2009-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 670 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, Peachtre/Fal Fld, GA at 00:00Z on 2009-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
670 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
1950 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

728 
WWUS82 KFFC 240838
RFWFFC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
438 AM EDT FRI APR 24 2009

GAZ052>054-056-066>070-078>081-089>095-102>106-241645-
/O.NEW.KFFC.FW.W.0074.090424T1800Z-090425T0000Z/
HEARD-COWETA-FAYETTE-SPALDING-TROUP-MERIWETHER-PIKE-UPSON-LAMAR-
HARRIS-TALBOT-TAYLOR-CRAWFORD-MUSCOGEE-CHATTAHOOCHEE-MARION-
SCHLEY-MACON-PEACH-HOUSTON-STEWART-WEBSTER-SUMTER-DOOLY-CRISP-
438 AM EDT FRI APR 24 2009

...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM
EDT THIS EVENING FOR PORTIONS OF WEST CENTRAL GEORGIA FOR LOW HUMIDITY...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A RED
FLAG WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM
EDT THIS EVENING. THIS AREA IS GENERALLY SOUTH OF CARROLLTON TO 
ATLANTA AND WEST OF MACON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS WARNING DOES NOT INCLUDE THE CHATTAHOOCHEE OR OCONEE
NATIONAL FORESTS. 

DRY FUEL MOISTURE CONDITIONS WILL COMBINE WITH RELATIVE
HUMIDITIES OF 20 TO 25 PERCENT AND SOUTHWEST WINDS OF 10 TO 15
MPH. THIS WILL CREATE DANGEROUS FIRE WEATHER CONDITIONS.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING...OR WILL OCCUR WITHIN 36 HOURS.

PLEASE REFER TO THE LOCAL BURN PERMITTING AUTHORITIES ON WHETHER
YOU MAY BURN OUTDOORS. IF YOU DO BURN OUTSIDE...USE EXTREME
CAUTION.

PLEASE ADVISE THE APPROPRIATE OFFICIALS OR FIRE CREWS IN THE
FIELD OF THE RED FLAG WARNING.

&&

$$
1 follow-up statement
371 
WWUS82 KFFC 242353
RFWFFC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
753 PM EDT FRI APR 24 2009

GAZ052>054-056-066>070-078>081-089>095-102>106-250100-
/O.EXP.KFFC.FW.W.0074.000000T0000Z-090425T0000Z/
HEARD-COWETA-FAYETTE-SPALDING-TROUP-MERIWETHER-PIKE-UPSON-LAMAR-
HARRIS-TALBOT-TAYLOR-CRAWFORD-MUSCOGEE-CHATTAHOOCHEE-MARION-
SCHLEY-MACON-PEACH-HOUSTON-STEWART-WEBSTER-SUMTER-DOOLY-CRISP-
753 PM EDT FRI APR 24 2009

...RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING FOR PARTS
OF WEST CENTRAL GEORGIA...

THE RED FLAG WARNING WILL EXPIRE AT 8 PM EDT THIS EVENING. RED
FLAG CONDITIONS ARE NO LONGER EXPECTED.



$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 23, 8:10 PM EDTSevere Thunderstorm WarningFFCCherokee, Cobb, DeKalb, Fulton65 min
Apr 23, 8:24 PM EDTSevere Thunderstorm WarningFFCClayton, DeKalb, Fulton66 min
Apr 23, 8:36 PM EDTSevere Thunderstorm WarningFFCGwinnett, Walton54 min
Apr 23, 8:49 PM EDTSevere Thunderstorm WarningFFCBarrow, Gwinnett, Hall, Jackson, Walton56 min
Apr 23, 8:50 PM EDTSevere Thunderstorm WarningFFCJasper, Morgan, Newton55 min
Apr 23, 9:06 PM EDTSevere Thunderstorm WarningFFCWalton39 min
Apr 23, 9:10 PM EDTSevere Thunderstorm WarningFFCClayton, Henry65 min
Apr 23, 9:12 PM EDTSevere Thunderstorm WarningFFCClayton, DeKalb, Fulton27 min
Apr 23, 9:29 PM EDTSevere Thunderstorm WarningFFCJasper, Morgan, Putnam61 min
Apr 23, 9:32 PM EDTSevere Thunderstorm WarningFFCJones, Monroe58 min
Apr 23, 9:35 PM EDTSevere Thunderstorm WarningFFCMorgan36 min
Apr 23, 9:36 PM EDTSevere Thunderstorm WarningFFCClarke, Madison, Oglethorpe23 min
Apr 23, 10:02 PM EDTSevere Thunderstorm WarningFFCBaldwin, Jones58 min
Apr 23, 10:33 PM EDTSevere Thunderstorm WarningFFCBaldwin, Bibb, Jones, Twiggs, Washington, Wilkinson57 min
Apr 23, 10:50 PM EDTSevere Thunderstorm WarningFFCBaldwin, Hancock, Washington40 min
Apr 23, 11:25 PM EDTSevere Thunderstorm WarningFFCBibb, Bleckley, Johnson, Laurens, Twiggs, Washington and 1 more28 min

Nearby

Red Flag Warnings in Georgia, 2009Every red flag warning in 2009

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.