Alert archive / Florida / Red Flag Warnings in 2008

Red Flag Warning 16, NWS Mobile, AL

February 11, 2008Walton County, Florida

NWS Mobile, AL issued this red flag warning at Feb 11, 2008, 6:18 AM CST for Walton County, Florida. It took effect at Feb 11, 2008, 11:00 AM CST. 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
Feb 11, 2008, 6:18 AM CST (12:18 UTC)
In effect from
Feb 11, 2008, 11:00 AM CST
Expired
Feb 11, 2008, 5:00 PM CST
In force
6 hr
Issued by
NWS Mobile, AL

County Walton County, FL

The radar

The Eglin Afb radar (KEVX), 25 km from the middle of the area, began a volume at 12:20 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, 0.3 hours before the alert went out and 181 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 2008-02-11Temperature 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 2008-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.1939587897Sfc1 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
3418 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
-27 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.

000 
WWUS84 KMOB 111218
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
618 AM CST MON FEB 11 2008

...FIRE WEATHER WATCH IN EFFECT FROM 11 AM MONDAY MORNING THROUGH 5 
PM MONDAY AFTERNOON SANTA ROSA...OKALOOSA AND COASTAL WALTON 
COUNTIES OF THE WEST FLORIDA PANHANDLE...

.ANOTHER WEAK COLD FRONT WILL MOVE SOUTH OVER THE AREA DURING THE
MORNING MONDAY...REINFORCING NORTH WINDS AND DRY AIR MASS FOR MONDAY.
WIND BECOMES MORE EAST LIMITING THE FALL OF HUMIDITY TO LEVELS SEEN
SUNDAY. THE NEXT RAIN WINDOW WILL BE LATE TUESDAY INTO WEDNESDAY 
MORNING AS ANOTHER COLD FRONT MOVES SOUTHWARD OVER THE AREA.

FLZ003>006-008-112300-
/O.UPG.KMOB.FW.A.0014.080211T1700Z-080211T2200Z/
/O.NEW.KMOB.FW.W.0016.080211T1700Z-080211T2300Z/
INLAND SANTA ROSA-COASTAL SANTA ROSA-INLAND OKALOOSA-
COASTAL OKALOOSA-COASTAL WALTON-
618 AM CST MON FEB 11 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 5 PM CST
THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 5 PM CST
THIS AFTERNOON. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

RELATIVE HUMIDITY ACROSS THE WESTERN FLORIDA PANHANDLE WILL FALL TO 
AROUND 30 PERCENT BY THE AFTERNOON HOURS ON MONDAY. THERE IS A 
LIKELIHOOD THAT THE DURATION OF LOW RH BELOW 35 PERCENT COULD EXCEED 
4 HOURS.

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
000 
WWUS84 KMOB 111232 CCA
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
618 AM CST MON FEB 11 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 5 PM CST 
THIS AFTERNOON...

.ANOTHER WEAK COLD FRONT WILL MOVE SOUTH OVER THE AREA DURING THE
MORNING MONDAY...REINFORCING NORTH WINDS AND DRY AIR MASS FOR MONDAY.
WIND BECOMES MORE EAST LIMITING THE FALL OF HUMIDITY TO LEVELS SEEN
SUNDAY. THE NEXT RAIN WINDOW WILL BE LATE TUESDAY INTO WEDNESDAY 
MORNING AS ANOTHER COLD FRONT MOVES SOUTHWARD OVER THE AREA.

FLZ003>006-008-112300-
/O.UPG.KMOB.FW.A.0014.080211T1700Z-080211T2200Z/
/O.NEW.KMOB.FW.W.0016.080211T1700Z-080211T2300Z/
INLAND SANTA ROSA-COASTAL SANTA ROSA-INLAND OKALOOSA-
COASTAL OKALOOSA-COASTAL WALTON-
618 AM CST MON FEB 11 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 5 PM CST
THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 5 PM CST
THIS AFTERNOON. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

RELATIVE HUMIDITY ACROSS THE WESTERN FLORIDA PANHANDLE WILL FALL TO 
AROUND 30 PERCENT BY THE AFTERNOON HOURS ON MONDAY. THERE IS A 
LIKELIHOOD THAT THE DURATION OF LOW RH BELOW 35 PERCENT COULD EXCEED 
4 HOURS.

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.

$$

Nearby

Red Flag Warnings in Florida, 2008Every red flag warning in 2008

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.