Alert archive / Florida / Red Flag Warnings in 2012

Red Flag Warning 7, NWS Jacksonville, FL

February 25, 20127 counties in Florida

NWS Jacksonville, FL issued this red flag warning at Feb 25, 2012, 4:47 AM EST for 7 counties in Florida. It took effect at Feb 25, 2012, 10:00 AM EST. 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
Feb 25, 2012, 4:47 AM EST (09:47 UTC)
In effect from
Feb 25, 2012, 10:00 AM EST
Expired
Feb 25, 2012, 4:00 PM EST
In force
6 hr
Issued by
NWS Jacksonville, FL

Counties Baker County, FL, Bradford County, FL, Flagler County, FL, Gilchrist County, FL, Nassau County, FL, Suwannee County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 71 km from the middle of the area, began a volume at 09:49 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

Jacksonville, FL (KJAX), launched 00:00Z, 9.8 hours before the alert went out and 72 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, Jacksonville, FL at 00:00Z on 2012-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 609 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, Jacksonville, FL at 00:00Z on 2012-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 295 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
609 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1088 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
295 m²/s²
0-3 km storm-relative helicity
321 m²/s²
Significant tornado parameter
1.2
Supercell composite
4.5

Open this sounding in Storm Lab

The text

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

136 
WWUS82 KJAX 250947
RFWJAX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
447 AM EST SAT FEB 25 2012

FLZ020>025-030>033-035>038-040-251800-
/O.UPG.KJAX.FW.A.0008.120225T1500Z-120225T2300Z/
/O.NEW.KJAX.FW.W.0007.120225T1500Z-120225T2100Z/
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-
447 AM EST SAT FEB 25 2012

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 PM EST
THIS AFTERNOON FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTHEAST
FLORIDA...

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A RED
FLAG WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 4 PM
EST THIS AFTERNOON.

* WIND...NORTH AROUND 15 MPH WITH GUSTS UP TO 25 MPH INLAND AND 15
  TO 20 MPH WITH GUSTS NEAR 30 MPH AT THE COAST THIS MORNING. 

* HUMIDITY...20 TO 25 PERCENT INLAND AND 25 TO 30 PERCENT AT THE COAST.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS AND LOW RELATIVE HUMIDITY WILL CREATE INCREASED FIRE
GROWTH POTENTIAL.

&&

$$


HTTP://WEATHER.GOV/JAX
2 follow-up statements
392 
WWUS82 KJAX 251853
RFWJAX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
153 PM EST SAT FEB 25 2012

FLZ020>025-030>033-035>038-040-252100-
/O.CON.KJAX.FW.W.0007.000000T0000Z-120225T2100Z/
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-
153 PM EST SAT FEB 25 2012

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM EST THIS
AFTERNOON FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTHEAST FLORIDA...

* WIND...NORTH AROUND 15 MPH WITH GUSTS UP TO 20 MPH INLAND AND 15
  TO 20 MPH WITH GUSTS UP TO 25 MPH AT THE COAST.

* HUMIDITY...20 TO 25 PERCENT.

* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. 
  OUTDOOR BURNING IS NOT RECOMMENDED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS AND LOW RELATIVE HUMIDITY WILL CREATE INCREASED FIRE
GROWTH POTENTIAL.

&&

$$


HTTP://WEATHER.GOV/JAX
635 
WWUS82 KJAX 252058
RFWJAX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
358 PM EST SAT FEB 25 2012

FLZ020>025-030>033-035>038-040-252200-
/O.EXP.KJAX.FW.W.0007.000000T0000Z-120225T2100Z/
HAMILTON-SUWANNEE-COLUMBIA-BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-
ST JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION-
358 PM EST SAT FEB 25 2012

...RED FLAG WARNING WILL EXPIRE AT 4 PM EST THIS AFTERNOON 
FOR NORTHEAST FLORIDA...

$$


HTTP://WEATHER.GOV/JAX

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 7:03 PM ESTLake Wind AdvisoryJAXBaker, Bradford, Flagler, Nassau, Union4 hr
Feb 25, 1:07 PM ESTSmall Craft AdvisoryJAX8 hr

Nearby

Red Flag Warnings in Florida, 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.