Alert archive / Florida / Red Flag Warnings in 2012

Red Flag Warning 12, NWS Miami, FL

November 23, 2012Collier County, Florida

NWS Miami, FL issued this red flag warning at Nov 23, 2012, 3:12 AM EST for Collier County, Florida. It took effect at Nov 23, 2012, 12:00 PM 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
Nov 23, 2012, 3:12 AM EST (08:12 UTC)
In effect from
Nov 23, 2012, 12:00 PM EST
Expired
Nov 23, 2012, 6:00 PM EST
In force
6 hr
Issued by
NWS Miami, FL

County Collier County, FL

The radar

The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 08:16 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

Miami, FL (KMFL), launched 00:00Z, 8.2 hours before the alert went out and 113 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, Miami, FL at 00:00Z on 2012-11-23Temperature 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, Miami, FL at 00:00Z on 2012-11-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
1847 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
103 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.

797 
WWUS82 KMFL 230812
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
312 AM EST FRI NOV 23 2012

...RED FLAG WARNING THIS AFTERNOON FOR GLADES,HENDRY AND NORTHWEST
COLLIER COUNTIES DUE TO A COMBINATION OF SUSTAINED LOW RELATIVE
HUMIDITIES BELOW 35 PERCENT AND AN ENERGY RELEASE COMPONENT AROUND
35...

FLZ063-066-069-070-232300-
/O.NEW.KMFL.FW.W.0012.121123T1700Z-121123T2300Z/
GLADES-HENDRY-COASTAL COLLIER-INLAND COLLIER-
312 AM EST FRI NOV 23 2012

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM EST THIS
EVENING FOR FIRE WEATHER ZONES 063...066...069 AND 070...

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 6 PM EST THIS
EVENING. 

* AFFECTED AREA...FIRE WEATHER ZONES 063...066...069 AND 070. 

* HUMIDITY...SUSTAINED RELATIVE HUMIDITY BELOW 35 PERCENT FOR 4
  HOURS OR MORE CONSECUTIVE HOURS.

* ENERGY RELEASE COMPONENT (ERC)...OF 35 OR POSSIBLY HIGHER.

* HIGHEST THREAT...IS LOCATED IN WESTERN GLADES COUNTY, WESTERN
  HENDRY COUNTY AND NORTHWEST COLLIER COUNTY NORTH OF A LINE FROM
  NAPLES TO IMMOKALEE.

* 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.

&&

$$
1 follow-up statement
907 
WWUS82 KMFL 232302
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
602 PM EST FRI NOV 23 2012

FLZ063-066-069-070-240015-
/O.EXP.KMFL.FW.W.0012.000000T0000Z-121123T2300Z/
GLADES-HENDRY-COASTAL COLLIER-INLAND COLLIER-
602 PM EST FRI NOV 23 2012

...RED FLAG WARNING HAS EXPIRED FOR FIRE WEATHER ZONES 063...
066...069 AND 070...

RELATIVE HUMIDITIES ARE RISING ABOVE CRITICAL LEVELS, THEREFORE
THE RED FLAG WARNING HAS BEEN ALLOWED TO EXPIRE.

$$

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.