Alert archive / Florida / Red Flag Warnings in 2012

Red Flag Warning 30, NWS Tallahassee, FL

May 10, 2012Leon County, Florida

NWS Tallahassee, FL issued this red flag warning at May 10, 2012, 4:50 PM EDT for Leon County, Florida. It took effect at May 11, 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
May 10, 2012, 4:50 PM EDT (20:50 UTC)
In effect from
May 11, 2012, 1:00 PM EDT
Expired
May 11, 2012, 7:00 PM EDT
In force
6 hr
Issued by
NWS Tallahassee, FL

County Leon County, FL

The radar

The Tallahassee radar (KTLH), 8 km from the middle of the area, began a volume at 21:05 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 12:00Z, 8.8 hours before the alert went out and 7 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 12:00Z on 2012-05-10Temperature 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 12:00Z on 2012-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -97 square meters per square second.19395878Sfc1 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
1629 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-97 m²/s²
0-3 km storm-relative helicity
124 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.

499 
WWUS82 KTAE 102050
RFWTAE

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TALLAHASSEE FL
450 PM EDT THU MAY 10 2012

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 7 PM EDT FRIDAY FOR
LEON COUNTY DUE TO A COMBINATION OF LOW RELATIVE HUMIDITY AND FUEL
MOISTURE...

FLZ017-111130-
/O.NEW.KTAE.FW.W.0030.120511T1700Z-120511T2300Z/
LEON-
450 PM EDT THU MAY 10 2012

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 7 PM EDT FRIDAY FOR 
LEON COUNTY...

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A RED FLAG
WARNING DUE TO A COMBINATION OF LOW RELATIVE HUMIDITY AND FUEL
MOISTURE.

* AFFECTED AREA...FIRE WEATHER ZONE 017.

* HUMIDITY...MINIMUM OF 27 PERCENT WITH TOTAL DURATIONS BELOW 35
  PERCENT OF AROUND 6 HOURS.

* ERC...37.

* 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. LOW RELATIVE HUMIDITY
WILL ENHANCE FIRE GROWTH POTENTIAL.

&&

$$

18-WOOL
1 follow-up statement
657 
WWUS82 KTAE 110746
RFWTAE

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE TALLAHASSEE FL
346 AM EDT FRI MAY 11 2012

...A RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM EDT THIS
AFTERNOON TO 7 PM EDT THIS EVENING FOR LEON COUNTY DUE TO A
COMBINATION OF LOW RELATIVE HUMIDITY AND HIGH ERC VALUES...

FLZ017-112300-
/O.CON.KTAE.FW.W.0030.120511T1700Z-120511T2300Z/
LEON-
346 AM EDT FRI MAY 11 2012

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
7 PM EDT THIS EVENING FOR LEON COUNTY...

* HUMIDITY...MINIMUM BETWEEN 25 AND 30 PERCENT WITH DURATIONS
  BELOW 35 PERCENT OF AROUND 6 HOURS.

* ERC...37.

* 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. LOW RELATIVE HUMIDITY
WILL ENHANCE FIRE GROWTH POTENTIAL.

&&

$$

DVD

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 8:21 PM EDTFire Weather WatchTAEDixie, Franklin, Gulf, Jefferson, Lafayette, Leon and 3 more7 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.