Alert archive / Florida / Red Flag Warnings in 2011

Red Flag Warning 4, NWS Miami, FL

January 29, 20114 counties in Florida

NWS Miami, FL issued this red flag warning at Jan 29, 2011, 3:22 AM EST for 4 counties in Florida. It took effect at Jan 29, 2011, 11:00 AM EST. It was in force for 8 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
Jan 29, 2011, 3:22 AM EST (08:22 UTC)
In effect from
Jan 29, 2011, 11:00 AM EST
Expired
Jan 29, 2011, 7:00 PM EST
In force
8 hr
Issued by
NWS Miami, FL

Counties Broward County, FL, Miami-Dade County, FL, Monroe County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 45 km from the middle of the area, began a volume at 08:27 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, 8.4 hours before the alert went out and 34 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 2011-01-29Temperature 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 2011-01-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939587897117Sfc1 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
2441 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
3 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.

796 
WWUS82 KMFL 290822
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
322 AM EST SAT JAN 29 2011

FLZ069-290930-
/O.CAN.KMFL.FW.A.0005.110129T1600Z-110130T0000Z/
COASTAL COLLIER-
322 AM EST SAT JAN 29 2011

...FIRE WEATHER WATCH IS CANCELLED...

WITH NORTHWEST WIND FLOW, TEMPERATURES WILL BE COOLER THAN INLAND
AND MORE MOISTURE WILL BE PRESENT TO NOT ALLOW FIRE WEATHER PROBLEMS,
THEREFORE THE NATIONAL WEATHER SERVICE IN MIAMI HAS CANCELLED THE
FIRE WEATHER WATCH.

$$

FLZ063-066>068-070>075-172>174-300000-
/O.UPG.KMFL.FW.A.0005.110129T1600Z-110130T0000Z/
/O.NEW.KMFL.FW.W.0004.110129T1600Z-110130T0000Z/
GLADES-HENDRY-INLAND PALM BEACH-METRO PALM BEACH-INLAND COLLIER-
INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
MAINLAND MONROE-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
322 AM EST SAT JAN 29 2011

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EST
THIS EVENING...

RELATIVE HUMIDITIES WILL DROP BELOW 35 PERCENT FOR 4 OR MORE
CONSECUTIVE HOURS ACROSS MUCH OF SOUTH FLORIDA TODAY, THEREFORE 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EST
THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

FLZ168-300000-
/O.NEW.KMFL.FW.W.0004.110129T1600Z-110130T0000Z/
COASTAL PALM BEACH-
322 AM EST SAT JAN 29 2011

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM EST
THIS EVENING...

RELATIVE HUMIDITIES WILL DROP BELOW 35 PERCENT FOR 4 OR MORE
CONSECUTIVE HOURS TODAY, THEREFORE THE NATIONAL WEATHER SERVICE
IN MIAMI HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM
11 AM THIS MORNING TO 7 PM EST THIS EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
2 follow-up statements
733 
WWUS82 KMFL 291916
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
216 PM EST SAT JAN 29 2011

FLZ063-066>068-070>075-168-172>174-300000-
/O.CON.KMFL.FW.W.0004.000000T0000Z-110130T0000Z/
GLADES-HENDRY-INLAND PALM BEACH-METRO PALM BEACH-INLAND COLLIER-
INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
MAINLAND MONROE-COASTAL PALM BEACH-COASTAL BROWARD-
COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
216 PM EST SAT JAN 29 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
FOR ALL BUT THE GULF COAST FOR RELATIVE HUMIDITIES BELOW 35
PERCENT FOR FOUR HOURS...

TEMPERATURES IN THE 70S AND DEWPOINTS IN THE UPPER 30S TO 40S
ACROSS THE INTERIOR AND ATLANTIC COAST WILL RESULT IN RELATIVE
HUMIDITIES BELOW 35 PERCENT FOR AROUND 4 HOURS THROUGH EARLY THIS
EVENING. A GULF BREEZE WILL MODIFY DEWPOINTS THERE...KEEPING
RELATIVE HUMIDITIES ABOVE CRITICAL LEVELS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

GREGORIA
588 
WWUS82 KMFL 292247
RFWMFL

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MIAMI FL
547 PM EST SAT JAN 29 2011

FLZ068-072>075-168-172>174-300000-
/O.CAN.KMFL.FW.W.0004.000000T0000Z-110130T0000Z/
METRO PALM BEACH-METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-
MAINLAND MONROE-COASTAL PALM BEACH-COASTAL BROWARD-
COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE-
547 PM EST SAT JAN 29 2011

...RED FLAG WARNING IS CANCELLED FOR THE EAST COAST METRO AREAS
AND MAINLAND MONROE COUNTY...

REGIONAL OBSERVATIONS INDICATE THAT THE RELATIVE HUMIDITIES ACROSS
PORTIONS OF THE WARNING AREA HAVE RISEN ABOVE CRITICAL
LEVELS. THE AREAS INCLUDE MAINLAND MONROE COUNTY AND THE EAST
COAST METRO AREAS. THEREFORE...THE RED FLAG WARNING HAS BEEN
CANCELLED FOR THESE AREAS.

$$

FLZ063-066-067-070-071-300000-
/O.CON.KMFL.FW.W.0004.000000T0000Z-110130T0000Z/
GLADES-HENDRY-INLAND PALM BEACH-INLAND COLLIER-INLAND BROWARD-
547 PM EST SAT JAN 29 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING
FOR THE INLAND PORTIONS OF COLLIER...BROWARD AND PALM BEACH
COUNTIES AND FOR ALL OF GLADES AND HENDRY COUNTIES. REGIONAL
OBSERVATIONS INDICATE THAT RELATIVE HUMIDITIES ACROSS PORTIONS OF
THESE AREAS STILL REMAIN BELOW CRITICAL LEVELS. THEREFORE..THE RED
FLAG WARNING CONTINUES TO BE IN EFFECT FOR THESE AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

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.