Alert archive / Florida / Red Flag Warnings in 2012

Red Flag Warning 21, NWS Jacksonville, FL

April 28, 2012Suwannee County, Florida

NWS Jacksonville, FL issued this red flag warning at Apr 28, 2012, 3:52 AM EDT for Suwannee County, Florida. It took effect at Apr 28, 2012, 1:00 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 28, 2012, 3:52 AM EDT (07:52 UTC)
In effect from: Apr 28, 2012, 1:00 PM EDT
Expired: Apr 28, 2012, 7:00 PM EDT
In force: 6 hr
Issued by: NWS Jacksonville, FL

County Suwannee County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 7.9 hours before the alert went out and 128 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 218 J/kg
Mixed-layer CIN: -171 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 59 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.

289 
WWUS82 KJAX 280752
RFWJAX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
352 AM EDT SAT APR 28 2012

FLZ023>025-030>032-035>037-040-280900-
/O.CAN.KJAX.FW.A.0020.120428T1700Z-120428T2300Z/
BAKER-NASSAU-DUVAL-UNION-BRADFORD-CLAY-GILCHRIST-ALACHUA-PUTNAM-
MARION-
352 AM EDT SAT APR 28 2012

...FIRE WEATHER WATCH IS CANCELLED FOR HIGH ERC VALUES AND LOW
HUMIDITY FOR PORTIONS OF NORTHEAST FLORIDA...

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

$$

FLZ020>022-282300-
/O.UPG.KJAX.FW.A.0020.120428T1700Z-120428T2300Z/
/O.NEW.KJAX.FW.W.0021.120428T1700Z-120428T2300Z/
HAMILTON-SUWANNEE-COLUMBIA-
352 AM EDT SAT APR 28 2012

...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM
EDT THIS EVENING FOR HIGH ERC VALUES AND LOW HUMIDITY FOR PORTIONS
OF NORTHEAST FLORIDA...

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A RED
FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO
7 PM EDT THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN
EFFECT. 

* RH...MINIMUM VALUES BETWEEN 25 AND 35...WITH VALUES EXPECTED TO
  BE BELOW 35 FOR 3 TO 5 HOURS.

* ERC...VALUES AROUND 35 THIS AFTERNOON.

* 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...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$


HTTP://WEATHER.GOV/JAX

1 follow-up statement

527 
WWUS82 KJAX 282310
RFWJAX

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
710 PM EDT SAT APR 28 2012

FLZ020>022-290015-
/O.EXP.KJAX.FW.W.0021.000000T0000Z-120428T2300Z/
HAMILTON-SUWANNEE-COLUMBIA-
710 PM EDT SAT APR 28 2012

...RED FLAG WARNING HAS EXPIRED FOR HIGH ERC VALUES AND LOW
HUMIDITY FOR PORTIONS OF NORTHEAST FLORIDA...

RELATIVE HUMIDITIES ARE RISING ACROSS THE AREA. THE RED FLAG
WARNING HAS EXPIRED.

$$


HTTP://WEATHER.GOV/JAX

Nearby

Red Flag Warnings in Florida, 2012 Every 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.