Alert archive / Florida / Red Flag Warnings in 2011

Red Flag Warning 8, NWS Miami, FL

February 15, 2011Collier County, Florida

NWS Miami, FL issued this red flag warning at Feb 15, 2011, 1:25 AM EST for Collier County, Florida. It took effect at Feb 15, 2011, 11:00 AM EST. It was in force for 7 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 15, 2011, 1:25 AM EST (06:25 UTC)
In effect from
Feb 15, 2011, 11:00 AM EST
Expired
Feb 15, 2011, 6:00 PM EST
In force
7 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 06:26 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, 6.4 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 2011-02-15Temperature 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 2011-02-15The 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
1401 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
25 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.

481 
WWUS82 KMFL 150625
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
125 AM EST TUE FEB 15 2011

FLZ063-066-069-070-151430-
/O.UPG.KMFL.FW.A.0009.110215T1700Z-110215T2300Z/
/O.NEW.KMFL.FW.W.0008.110215T1600Z-110215T2300Z/
GLADES-HENDRY-COASTAL COLLIER-INLAND COLLIER-
125 AM EST TUE FEB 15 2011

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EST
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 6 PM EST
THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

RELATIVE HUMIDITIES WILL FALL TO LESS THAN 35 PERCENT FOR 4 OR
MORE CONSECUTIVE HOURS ACROSS GLADES...HENDRY...AND INLAND
COLLIER COUNTIES THIS AFTERNOON. LOWEST VALUES ARE FORECAST TO BE
BETWEEN 28 AND 34 PERCENT.

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
315 
WWUS82 KMFL 150814
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
314 AM EST TUE FEB 15 2011

FLZ063-066-069-070-152300-
/O.CON.KMFL.FW.W.0008.110215T1600Z-110215T2300Z/
GLADES-HENDRY-COASTAL COLLIER-INLAND COLLIER-
314 AM EST TUE FEB 15 2011

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
6 PM EST THIS EVENING...

A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
6 PM EST THIS EVENING. 

RELATIVE HUMIDITIES WILL FALL TO LESS THAN 35 PERCENT FOR 4 OR
MORE CONSECUTIVE HOURS ACROSS GLADES...HENDRY...AND COLLIER
COUNTIES THIS AFTERNOON. LOWEST VALUES ARE FORECAST TO BE BETWEEN
28 AND 34 PERCENT.

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.

&&

$$

BETTWY

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.