Alert archive / Florida / Red Flag Warnings in 2011

Red Flag Warning 52, NWS Tallahassee, FL

May 13, 201110 counties in Florida

NWS Tallahassee, FL issued this red flag warning at May 13, 2011, 3:13 AM CDT for 10 counties in Florida. It took effect at May 13, 2011, 1:00 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 13, 2011, 3:13 AM CDT (08:13 UTC)
In effect from
May 13, 2011, 1:00 PM CDT
Expired
May 13, 2011, 6:00 PM CDT
In force
5 hr
Issued by
NWS Tallahassee, FL

Counties Calhoun County, FL, Dixie County, FL, Gadsden County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Madison County, FL, Taylor County, FL, Wakulla County, FL

The radar

The Tallahassee radar (KTLH), 25 km from the middle of the area, began a volume at 08:11 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.2 hours before the alert went out and 23 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 2011-05-13Temperature 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 2011-05-13The 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
3598 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
37 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.

629 
WWUS82 KTAE 130813
RFWTAE

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TALLAHASSEE FL
413 AM EDT FRI MAY 13 2011

...A RED FLAG WARNING IS NOW IN EFFECT FROM 2 PM EDT /1 PM CDT/
THIS AFTERNOON UNTIL 7 PM EDT /6 PM CDT/ THIS EVENING FOR THE
INTERIOR PORTIONS OF THE FLORIDA BIG BEND AND PARTS OF THE EASTERN
PANHANDLE DUE TO A COMBINATION OF RELATIVE HUMIDITY BELOW 35
PERCENT AND DISPERSIONS GREATER THAN 75...

.DISCUSSION...WITH TODAY'S FORECAST ERC VALUES STILL EXPECTED 
TO BE FAIRLY HIGH ACROSS WESTERN PORTIONS OF THE FLORIDA BIG BEND
AND EASTERN PANHANDLE..AND WITH FORECAST DISPERSIONS ABOVE 75
OVER ALL AREAS OF THE PREVIOUS WATCH...WILL UPGRADE THE PRIOR
FIRE WEATHER WATCH TO A RED FLAG WARNING AS MINIMUM RELATIVE
HUMIDITIES WILL BE LESS THAN 35 PERCENT. ALSO...WILL ADD INLAND
DIXIE COUNTY TO THE WARNING AS THEY NOW JUST MEET THE ABOVE
CRITERIA THIS AFTERNOON. AFTER TODAY...INCREASING LOW LEVEL
MOISTURE ALONG WITH INCREASING CLOUD COVER AND RAIN CHANCES SHOULD
PRECLUDE ANY FIRE WEATHER CONCERNS FOR SATURDAY...WITH DRIER AIR
GRADUALLY MOVING INTO THE REGION ON SUNDAY BEHIND THE COLD FRONT.


FLZ011-013-016>019-026>029-132300-
/O.UPG.KTAE.FW.A.0043.110513T1800Z-110513T2300Z/
/O.NEW.KTAE.FW.W.0052.110513T1800Z-110513T2300Z/
JACKSON-CALHOUN-GADSDEN-LEON-INLAND JEFFERSON-MADISON-LIBERTY-
INLAND WAKULLA-INLAND TAYLOR-LAFAYETTE-
413 AM EDT FRI MAY 13 2011 /313 AM CDT FRI MAY 13 2011/

...A RED FLAG WARNING IS NOW IN EFFECT FROM 2 PM EDT /1 PM CDT/
THIS AFTERNOON TO 7 PM EDT /6 PM CDT/ THIS EVENING DUE TO A COMBINATION
OF RELATIVE HUMIDITY BELOW 35 PERCENT AND DISPERSIONS GREATER THAN
75...

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 2 PM EDT /1 PM CDT/ THIS
AFTERNOON TO 7 PM EDT /6 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.

&&

$$

FLZ034-132300-
/O.NEW.KTAE.FW.W.0052.110513T1800Z-110513T2300Z/
INLAND DIXIE-
413 AM EDT FRI MAY 13 2011

...A RED FLAG WARNING IS NOW IN EFFECT FROM 2 PM THIS AFTERNOON
TO 7 PM EDT THIS EVENING DUE TO A COMBINATION OF RELATIVE HUMIDITY
BELOW 35 PERCENT AND DISPERSIONS GREATER THAN 75...

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 7 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.

&&

$$

17-GOULD

The office that day

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

IssuedProductOfficeCountiesLasted
May 13, 4:34 AM CDTDense Fog AdvisoryTAEBay, Calhoun, Franklin, Gulf, Holmes, Jackson and 2 more4 hr
May 13, 5:19 PM CDTSpecial Marine WarningTAE41 min
May 13, 5:56 PM CDTSpecial Weather StatementTAEWalton34 min

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; radar from the NEXRAD Level II archive.