Alert archive / Florida / Red Flag Warnings in 2011

Red Flag Warning 4, NWS Melbourne, FL

January 13, 20116 counties in Florida

NWS Melbourne, FL issued this red flag warning at Jan 13, 2011, 2:22 AM EST for 6 counties in Florida. It took effect at Jan 13, 2011, 12:00 PM EST. It was in force for 4 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 13, 2011, 2:22 AM EST (07:22 UTC)
In effect from
Jan 13, 2011, 12:00 PM EST
Expired
Jan 13, 2011, 4:00 PM EST
In force
4 hr
Issued by
NWS Melbourne, FL

Counties Lake County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 67 km from the middle of the area, began a volume at 07:24 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

Cape Canaveral, FL (KXMR), launched 00:00Z, 7.4 hours before the alert went out and 73 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, Cape Canaveral, FL at 00:00Z on 2011-01-13Temperature 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, Cape Canaveral, FL at 00:00Z on 2011-01-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -73 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
2243 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
-73 m²/s²
0-3 km storm-relative helicity
-26 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.

921 
WWUS82 KMLB 130722
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
222 AM EST THU JAN 13 2011

FLZ044>046-053-058-144-132100-
/O.UPG.KMLB.FW.A.0003.110113T1700Z-110113T2100Z/
/O.NEW.KMLB.FW.W.0004.110113T1700Z-110113T2100Z/
NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA-OKEECHOBEE-SOUTHERN LAKE-
222 AM EST THU JAN 13 2011

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 4 PM EST THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 4 PM EST THIS
AFTERNOON. 

A DRY AIRMASS WILL REMAIN IN PLACE ACROSS THE INTERIOR COUNTIES
TODAY WITH 4 TO 5 HOURS OF LOW RH VALUES EXPECTED THIS AFTERNOON.

NORTHERLY WINDS AROUND 10 TO 15 MPH WILL BECOME NORTHEAST BY THE
AFTERNOON AND DROP BELOW 10 MPH AS HIGH PRESSURE MOVES CLOSER TO
THE REGION. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL LIKELY OCCUR
WITHIN THE NEXT 24 HOURS.

&&

$$

FLZ041-132100-
/O.NEW.KMLB.FW.W.0004.110113T1700Z-110113T2100Z/
INLAND VOLUSIA-
222 AM EST THU JAN 13 2011

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 4 PM EST THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 4 PM EST THIS
AFTERNOON. 

A DRY AIRMASS WILL REMAIN IN PLACE ACROSS THE INTERIOR TODAY WITH
4 HOURS OF LOW RH VALUES EXPECTED THIS AFTERNOON.

NORTHERLY WINDS AROUND 10 TO 15 MPH WILL BECOME NORTHEAST BY THE
AFTERNOON AND DROP BELOW 10 MPH AS HIGH PRESSURE MOVES CLOSER TO
THE REGION. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING IS ISSUED WHEN VERY FAVORABLE CONDITIONS FOR
THE SPREAD OF WILDFIRE ARE OCCURRING NOW...OR WILL LIKELY OCCUR
WITHIN THE NEXT 24 HOURS.

&&

$$

MOSES
1 follow-up statement
339 
WWUS82 KMLB 132120
RFWMLB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MELBOURNE FL
420 PM EST THU JAN 13 2011

FLZ041-044>046-053-058-144-132230-
/O.EXP.KMLB.FW.W.0004.000000T0000Z-110113T2100Z/
INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA-OKEECHOBEE-
SOUTHERN LAKE-
420 PM EST THU JAN 13 2011

...RED FLAG WARNING HAS EXPIRED...

RELATIVE HUMIDITY VALUES HAVE RISEN ABOVE CRITICAL LEVELS OVER
MOST AREAS IN THE WARNING AREA. THEREFORE THE RED FLAG WARNING HAS
BEEN ALLOWED TO EXPIRE. HOWEVER...A FEW LOCATIONS OVER LAKE COUNTY
MAY CONTINUE TO SEE RELATIVE HUMIDITY VALUES JUST BELOW 35 PERCENT
THROUGH 5 PM.

$$

WEITLICH

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 13, 3:25 PM ESTFreeze WarningMLBLake, Volusia18 hr

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.