Alert archive / Florida / Red Flag Warnings in 2011

Red Flag Warning 65, NWS Tallahassee, FL

May 31, 20117 counties in Florida

NWS Tallahassee, FL issued this red flag warning at May 31, 2011, 3:04 AM CDT for 7 counties in Florida. It took effect at May 31, 2011, 2:00 PM CDT. It was in force for 5 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
May 31, 2011, 3:04 AM CDT (08:04 UTC)
In effect from
May 31, 2011, 2:00 PM CDT
Expired
May 31, 2011, 7:00 PM CDT
In force
5 hr
Issued by
NWS Tallahassee, FL

Counties Calhoun County, FL, Gadsden County, FL, Holmes County, FL, Jackson County, FL, Leon County, FL, Wakulla County, FL, Washington County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.1 hours before the alert went out and 71 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, Tallahassee Rgnl, FL at 00:00Z on 2011-05-31Temperature 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, Tallahassee Rgnl, FL at 00:00Z on 2011-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2371 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
21 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.

388 
WWUS82 KTAE 310804
RFWTAE

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TALLAHASSEE FL
404 AM EDT TUE MAY 31 2011

...THE FIRE WEATHER WATCH THAT WAS IN EFFECT THIS AFTERNOON FOR 
INLAND WALTON...CENTRAL WALTON...INLAND BAY...CALHOUN AND LIBERTY 
COUNTIES OF NORTHWEST FLORIDA HAS BEEN CANCELLED...

...A RED FLAG WARNING IS NOW IN EFFECT FROM 3 PM EDT /2 PM CDT/
THIS AFTERNOON TO 8 PM EDT /7 PM CDT/ THIS EVENING FOR HOLMES...
WASHINGTON...JACKSON...GADSDEN AND LEON COUNTIES OF NORTHWEST
FLORIDA DUE TO EXPECTED LONG DURATIONS OF LOW RELATIVE HUMIDITY
COMBINED WITH HIGH ERC VALUES...

.WE SHOULD SEE INTERIOR PORTIONS OF THE FLORIDA PANHANDLE AND
WESTERN BIG BEND EXPERIENCE LONG DURATIONS OF LOW RELATIVE
HUMIDITY THIS AFTERNOON. THIS COMBINED WITH HIGH ERC VALUES IN
THESE AREAS WILL RESULT IN RED FLAG CONDITIONS. ON WEDNESDAY... WE
ARE SHOWING NON-CRITICAL DURATIONS OF LOW RELATIVE HUMIDITY ACROSS
NORTHWEST FLORIDA BUT DISPERSION VALUES ARE FORECAST TO BE VERY
HIGH. THIS PARAMETER IS EXTREMELY SENSITIVE TO MINOR CHANGES IN
EITHER FORECAST SURFACE WINDS OR TRANSPORT WINDS SO WE WILL HOLD
OFF ON ISSUING A FIRE WEATHER WATCH AND RE-EVALUATE AFTER ANOTHER
RUN OF THE MODELS.

FLZ007-008-012-013-026-310915-
/O.CAN.KTAE.FW.A.0051.110531T1900Z-110601T0000Z/
INLAND WALTON-CENTRAL WALTON-INLAND BAY-CALHOUN-LIBERTY-
404 AM EDT TUE MAY 31 2011 /304 AM CDT TUE MAY 31 2011/

...THE FIRE WEATHER WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS CANCELLED THE
FIRE WEATHER WATCH. 

$$

FLZ009>011-016-010000-
/O.UPG.KTAE.FW.A.0051.110531T1900Z-110601T0000Z/
/O.NEW.KTAE.FW.W.0065.110531T1900Z-110601T0000Z/
HOLMES-WASHINGTON-JACKSON-GADSDEN-
404 AM EDT TUE MAY 31 2011 /304 AM CDT TUE MAY 31 2011/

...RED FLAG WARNING IS IN EFFECT FROM 3 PM EDT /2 PM CDT/ THIS
AFTERNOON TO 8 PM EDT /7 PM CDT/ THIS EVENING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LOW RELATIVE HUMIDITY
WILL ENHANCE FIRE GROWTH POTENTIAL.

&&

$$

FLZ017-010000-
/O.NEW.KTAE.FW.W.0065.110531T1900Z-110601T0000Z/
LEON-
404 AM EDT TUE MAY 31 2011

...A RED FLAG WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO 8 PM
EDT THIS EVENING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LOW RELATIVE HUMIDITY
WILL ENHANCE FIRE GROWTH POTENTIAL.

&&

$$

BARRY
1 follow-up statement
452 
WWUS82 KTAE 311833
RFWTAE

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TALLAHASSEE FL
233 PM EDT TUE MAY 31 2011

...A RED FLAG WARNING IS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THIS
EVENING FOR PORTIONS OF THE EASTERN PANHANDLE AND FAR WESTERN BIG
BEND DUE TO LONG DURATIONS OF LOW RELATIVE HUMIDITY COUPLED WITH
HIGH ERC VALUES...

...A FIRE WEATHER WATCH IS IN EFFECT FOR WEDNESDAY AFTERNOON
THROUGH WEDNESDAY EVENING FOR NORTHERN WALTON...HOLMES...AND
JACKSON COUNTIES DUE A COMBINATION OF LOW RELATIVE HUMIDITY AND
HIGH DISPERSIONS...

.RED FLAG CONDITIONS STILL APPEAR ON TRACK FOR PORTIONS OF THE INLAND 
EASTERN PANHANDLE THIS AFTERNOON. BASED ON THE LATEST RELATIVE 
HUMIDITY VALUES...HAVE EXPANDED THE WARNING SLIGHTLY FOR THE 
REMAINDER OF THE AFTERNOON. ON WEDNESDAY...ONE OR TWO HOURS OF SUB 
35 PERCENT RELATIVE HUMIDITY IS POSSIBLE ACROSS PORTIONS OF NORTHERN 
WALTON...HOLMES..AND JACKSON COUNTIES. HOWEVER...DISPERSIONS ARE 
STILL FORECAST TO BE QUITE HIGH...SO HAVE GONE WITH A WATCH FOR 
THOSE AREAS.

FLZ013-026-027-010000-
/O.EXA.KTAE.FW.W.0065.110531T1900Z-110601T0000Z/
CALHOUN-LIBERTY-INLAND WAKULLA-
233 PM EDT TUE MAY 31 2011 /133 PM CDT TUE MAY 31 2011/

...RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/ THIS
EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LOW RELATIVE HUMIDITY
WILL ENHANCE FIRE GROWTH POTENTIAL.

&&

$$

FLZ009-011-010200-
/O.NEW.KTAE.FW.A.0052.110601T1800Z-110601T2300Z/
/O.CON.KTAE.FW.W.0065.110531T1900Z-110601T0000Z/
HOLMES-JACKSON-
133 PM CDT TUE MAY 31 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
...FIRE WEATHER WATCH IN EFFECT WEDNESDAY AFTERNOON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LOW RELATIVE HUMIDITY
WILL ENHANCE FIRE GROWTH POTENTIAL.

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG
WARNINGS.

&&

$$

FLZ010-016-017-010000-
/O.CON.KTAE.FW.W.0065.110531T1900Z-110601T0000Z/
WASHINGTON-GADSDEN-LEON-
233 PM EDT TUE MAY 31 2011 /133 PM CDT TUE MAY 31 2011/

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT /7 PM CDT/
THIS EVENING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. LOW RELATIVE HUMIDITY
WILL ENHANCE FIRE GROWTH POTENTIAL.

&&

$$

FLZ007-010200-
/O.NEW.KTAE.FW.A.0052.110601T1800Z-110601T2300Z/
INLAND WALTON-
133 PM CDT TUE MAY 31 2011

...FIRE WEATHER WATCH IN EFFECT WEDNESDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A FIRE
WEATHER WATCH...WHICH IS IN EFFECT WEDNESDAY AFTERNOON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE POSSIBLE. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG
WARNINGS.

&&

$$

DVD

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 31, 1:33 PM CDTFire Weather WatchTAEHolmes, Jackson, Walton14 hr

Nearby

Red Flag Warnings in Florida, 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.