Alert archive / Florida / Red Flag Warnings in 2008

Red Flag Warning 35, NWS Mobile, AL

April 13, 2008Walton County, Florida

NWS Mobile, AL issued this red flag warning at Apr 13, 2008, 4:10 AM CDT for Walton County, Florida. It took effect at Apr 13, 2008, 12:00 PM CDT. 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
Apr 13, 2008, 4:10 AM CDT (09:10 UTC)
In effect from
Apr 13, 2008, 12:00 PM CDT
Expired
Apr 13, 2008, 8:00 PM CDT
In force
8 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 09:10 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 00:00Z, 9.2 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 00:00Z on 2008-04-13Temperature 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, Tallahassee Rgnl, FL at 00:00Z on 2008-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -60 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
1092 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
-60 m²/s²
0-3 km storm-relative helicity
7 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 130910
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
410 AM CDT SUN APR 13 2008

...A RED FLAG WARNING IS IN EFFECT ACROSS THE WESTERN FLORIDA
PANHANDLE FROM LATE MORNING INTO THE EARLY EVENING TODAY FOR EXPECTED
LONG DURATIONS OF LOW RELATIVE HUMIDITY BELOW 35 PERCENT AND GUSTY
NORTHWEST WINDS FROM 15 TO 20 MPH...

...A FIRE WEATHER WATCH IS IN EFFECT ACROSS THE WESTERN FLORIDA
PANHANDLE MONDAY AND AGAIN ON TUESDAY FOR THE POTENTIAL OF LONG 
DURATIONS OF LOW RELATIVE HUMIDITY BELOW 35 PERCENT DURING THE
LATE MORNING AND AFTERNOON HOURS...

.A VERY DRY AIRMASS WILL LIKELY REMAIN IN PLACE OVER THE WESTERN
FLORIDA PANHANDLE THROUGH TUESDAY.

FLZ001>006-008-132200-
/O.UPG.KMOB.FW.A.0029.080413T1600Z-080413T2300Z/
/O.NEW.KMOB.FW.W.0035.080413T1700Z-080414T0100Z/
/O.NEW.KMOB.FW.A.0030.080414T1600Z-080415T0000Z/
/O.NEW.KMOB.FW.A.0031.080415T1700Z-080416T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
410 AM CDT SUN APR 13 2008

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING...
...FIRE WEATHER WATCH IN EFFECT FROM MONDAY MORNING THROUGH
MONDAY EVENING...
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 8 PM CDT THIS
EVENING. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED FOR MONDAY MORNING
THROUGH EARLY MONDAY EVENING. IN ADDITION...A FIRE WEATHER WATCH HAS
BEEN ISSUED FOR TUESDAY AFTERNOON THROUGH EARLY TUESDAY EVENING.

RELATIVE HUMIDITY VALUES WILL FALL TO AROUND 25 PERCENT FOR SEVERAL
HOURS FROM LATE MORNING TODAY INTO THE EARLY EVENING HOURS. GUSTY
NORTHWEST WINDS AT 10 TO 20 MPH CAN ALSO BE EXPECTED TODAY.

VERY SIMILAR CONDITIONS CAN BE EXPECTED ON MONDAY. BY TUESDAY...THE 
WINDS ARE FORECAST TO BE LIGHTER. HOWEVER...WARM TEMPERATURES IN THE
LATE MORNING AND AFTERNOON HOURS ON TUESDAY WILL LIKELY RESULT IN
LOW RELATIVE HUMIDITY VALUES LINGERING AROUND 25 PERCENT FOR SEVERAL
HOURS.

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

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

$$
1 follow-up statement
000 
WWUS84 KMOB 131959
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
259 PM CDT SUN APR 13 2008

...A RED FLAG WARNING IS IN EFFECT ACROSS THE WESTERN FLORIDA
PANHANDLE UNTIL 8 PM THIS EVENING DUE TO LONG DURATION RELATIVE
HUMIDITY VALUES BELOW 35 PERCENT AND GUSTY NORTHWEST WINDS OF 15 TO
20 MPH...

...A FIRE WEATHER WATCH IS IN EFFECT ACROSS THE WESTERN FLORIDA
PANHANDLE MONDAY AND AGAIN ON TUESDAY FOR THE POTENTIAL OF LONG
DURATIONS OF LOW RELATIVE HUMIDITY BELOW 35 PERCENT DURING THE
LATE MORNING AND AFTERNOON HOURS...

.A VERY DRY AIRMASS WILL LIKELY REMAIN IN PLACE OVER THE WESTERN
FLORIDA PANHANDLE THROUGH TUESDAY.

FLZ001>006-008-141200-
/O.CON.KMOB.FW.W.0035.000000T0000Z-080414T0100Z/
/O.CON.KMOB.FW.A.0030.080414T1600Z-080415T0000Z/
/O.CON.KMOB.FW.A.0031.080415T1700Z-080416T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
259 PM CDT SUN APR 13 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS
EVENING...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY MORNING
THROUGH MONDAY EVENING...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH TUESDAY EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING.
A FIRE WEATHER WATCH REMAINS IN EFFECT FROM MONDAY MORNING
THROUGH MONDAY EVENING. A FIRE WEATHER WATCH ALSO REMAINS IN EFFECT
FOR TUESDAY AFTERNOON AND EVENING.

RELATIVE HUMIDITY VALUES WILL FALL TO 30 TO 35 PERCENT ACROSS THE
AREA ON MONDAY AFTERNOON FOR SEVERAL HOURS. GUSTY NORTHWEST WINDS AT
10 TO OCCASIONALLY 20 MPH CAN ALSO BE EXPECTED MONDAY.

BY TUESDAY...THE WINDS ARE EXPECTED TO BE LIGHTER. HOWEVER...WARM
TEMPERATURES AND STILL LOW DEW POINTS WILL LIKELY RESULT IN LOW
RELATIVE HUMIDITY VALUES LINGERING BETWEEN 25 TO 20 PERCENT FOR
SEVERAL HOURS TUESDAY AFTERNOON AND EARLY EVENING. 

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

A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 13, 4:10 AM CDTFire Weather WatchMOBWalton26 hr
Apr 13, 4:10 AM CDTFire Weather WatchMOBWalton26 hr

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.