Alert archive / Florida / Red Flag Warnings in 2008

Red Flag Warning 55, NWS Mobile, AL

June 20, 2008Walton County, Florida

NWS Mobile, AL issued this red flag warning at Jun 20, 2008, 3:59 AM CDT for Walton County, Florida. It took effect at Jun 20, 2008, 12:00 PM CDT. 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
Jun 20, 2008, 3:59 AM CDT (08:59 UTC)
In effect from
Jun 20, 2008, 12:00 PM CDT
Expired
Jun 20, 2008, 7:00 PM CDT
In force
7 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 09:00 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

Eglin AFB/Valpar, FL (KVPS), launched 00:00Z, 9.0 hours before the alert went out and 35 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, Eglin AFB/Valpar, FL at 00:00Z on 2008-06-20Temperature 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, Eglin AFB/Valpar, FL at 00:00Z on 2008-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 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
2049 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS84 KMOB 200859
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
359 AM CDT FRI JUN 20 2008

..RED FLAG WARNING IN EFFECT FOR THE INLAND AREAS OF 
ESCAMBIA...SANTA ROSA...OKALOOSA AND WALTON COUNTIES IN THE 
WESTERN FLORIDA PANHANDLE THIS AFTERNOON FOR EXPECTED LONG DURATIONS
OF LOW RELATIVE HUMIDITY BELOW 35 PERCENT...

.DISCUSSION...A DRY AIRMASS WILL REMAIN IN PLACE ACROSS THE AREA 
TODAY...WITH THE SOUTHERLY SEABREEZE BRINGING AN INCREASE IN
MOISTURE LATE IN THE DAY OFF THE GULF. HOWEVER...WE STILL EXPECT LONG
DURATIONS OF LOW RELATIVE HUMIDITY FOR THE INLAND AREAS AS THE
SEABREEZE WILL NOT BRING THE INCREASE IN MOISTURE UNTIL LATE IN THE
DAY. INCREASING SOUTHERLY FLOW OFF THE GULF WILL BRING AN INCREASE IN
RELATIVE HUMIDITY SATURDAY THROUGH MONDAY.

FLZ006-201000-
/O.CAN.KMOB.FW.A.0048.080620T1700Z-080621T0000Z/
COASTAL OKALOOSA-
359 AM CDT FRI JUN 20 2008

...FIRE WEATHER WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS CANCELED THE FIRE
WEATHER WATCH. 

HUMIDITY LEVELS WILL DROP TO AROUND 32 PERCENT FOR A SHORT PERIOD OF
TIME IN THE EARLY AFTERNOON HOURS...BUT LONG DURATIONS OF LOW
RELATIVE HUMIDITY BELOW 35 PERCENT FOR 4 OR MORE HOURS TODAY IS NOT
EXPECTED AS THE SEABREEZE WILL BRING INCREASING MOISTURE LEVELS IN
THE MID TO LATE AFTERNOON HOURS.

$$

FLZ003-005-008-210000-
/O.UPG.KMOB.FW.A.0048.080620T1700Z-080621T0000Z/
/O.NEW.KMOB.FW.W.0055.080620T1700Z-080621T0000Z/
INLAND SANTA ROSA-INLAND OKALOOSA-COASTAL WALTON-
359 AM CDT FRI JUN 20 2008

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING. 

RELATIVE HUMIDITY VALUES FALL TO BETWEEN 25 AND 30 PERCENT IN THE EARLY
AFTERNOON HOURS...AND WILL REMAIN BELOW 35 PERCENT THROUGH 5 PM BEFORE
INCREASING IN THE EARLY EVENING HOURS.

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.


$$

FLZ001-210000-
/O.NEW.KMOB.FW.W.0055.080620T1700Z-080621T0000Z/
INLAND ESCAMBIA-
359 AM CDT FRI JUN 20 2008

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING. 

RELATIVE HUMIDITY VALUES FALL TO BETWEEN 25 AND 30 PERCENT IN THE
EARLY AFTERNOON HOURS...AND WILL REMAIN BELOW 35 PERCENT THROUGH 5
PM BEFORE INCREASING IN THE EARLY EVENING HOURS.

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, 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.