Alert archive / Florida / Red Flag Warnings in 2008

Red Flag Warning 48, NWS Mobile, AL

May 4, 2008Walton County, Florida

NWS Mobile, AL issued this red flag warning at May 4, 2008, 2:17 PM CDT for Walton County, Florida. It took effect at May 5, 2008, 11:00 AM 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
May 4, 2008, 2:17 PM CDT (19:17 UTC)
In effect from
May 5, 2008, 11:00 AM CDT
Expired
May 5, 2008, 7:00 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 19:18 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, 7.3 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 2008-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 187 joules per kilogram.LCLLFCEL10008507005003002001001 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 2008-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
187 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
708 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
75 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 041917
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
217 PM CDT SUN MAY 4 2008

...RED FLAG WARNING CANCELED FOR THIS AFTERNOON FOR THE INTERIOR
PORTION OF THE NORTHWEST FLORIDA PANHANDLE...

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CDT MONDAY AND
FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING FOR THE NORTHWEST FLORIDA PANHANDLE...

.DRY HIGH PRESSURE WILL CONTINUE TO BUILD INTO THE REGION THROUGH
TUESDAY.  RELATIVE HUMIDITIES WILL DROP BRIEFLY BELOW CRITICAL LEVELS
OVER THE NORTHWEST FLORIDA PANHANDLE DURING THE REMAINDER OF THE
AFTERNOON BUT WILL NOT SATISFY DURATION REQUIREMENTS.  SEASONABLE
DAYTIME TEMPERATURES COMBINED WITH RELATIVELY LOW MOISTURE WILL
RESULT IN LONG DURATIONS OF LOW RELATIVE HUMIDITY BOTH MONDAY AND
TUESDAY.

FLZ001-003-005-051130-
/O.CAN.KMOB.FW.W.0047.000000T0000Z-080505T0000Z/
/O.UPG.KMOB.FW.A.0042.080505T1700Z-080506T0000Z/
/O.NEW.KMOB.FW.W.0048.080505T1600Z-080506T0000Z/
/O.NEW.KMOB.FW.A.0043.080506T1600Z-080507T0000Z/
INLAND ESCAMBIA-INLAND SANTA ROSA-INLAND OKALOOSA-
217 PM CDT SUN MAY 4 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CDT MONDAY...
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...
...RED FLAG WARNING IS CANCELLED FOR THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM TO 7 PM CDT MONDAY. A
FIRE WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE WEATHER WATCH
IS IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING. THE
RED FLAG WARNING HAS BEEN CANCELED FOR THIS AFTERNOON.

AFTERNOON RELATIVE HUMIDITIES WILL DROP BRIEFLY BELOW CRITICAL
LEVELS OVER THE NORTHWEST FLORIDA PANHANDLE DURING THE REMAINDER OF
THIS AFTERNOON BUT WILL NOT SATISFY DURATION REQUIREMENTS. RELATIVE
HUMIDITIES WILL DROP BELOW CRITICAL LEVELS AROUND NOON THEN RETURN
ABOVE CRITICAL LEVELS BY 6 PM BOTH MONDAY AND TUESDAY.

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.

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

$$

FLZ002-004-006-008-051130-
/O.UPG.KMOB.FW.A.0042.080505T1700Z-080506T0000Z/
/O.NEW.KMOB.FW.W.0048.080505T1600Z-080506T0000Z/
/O.NEW.KMOB.FW.A.0043.080506T1600Z-080507T0000Z/
COASTAL ESCAMBIA-COASTAL SANTA ROSA-COASTAL OKALOOSA-
COASTAL WALTON-
217 PM CDT SUN MAY 4 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CDT MONDAY...
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM TO 7 PM CDT MONDAY. A
FIRE WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE WEATHER WATCH
IS IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING.

RELATIVE HUMIDITIES WILL DROP BELOW CRITICAL LEVELS AROUND NOON THEN
RETURN ABOVE CRITICAL LEVELS BY 6 PM BOTH MONDAY AND TUESDAY.

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.

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

$$
2 follow-up statements
000 
WWUS84 KMOB 051019
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
519 AM CDT MON MAY 5 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT
THIS EVENING ACROSS THE WESTERN FLORIDA PANHANDLE FOR EXPECTED LONG
DURATIONS OF LOW RELATIVE HUMIDITY BELOW 35 PERCENT...

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
EVENING ACROSS THE WESTERN FLORIDA PANHANDLE FOR THE POTENTIAL OF 
LONG DURATIONS OF LOW RELATIVE HUMIDITY BELOW 35 PERCENT...

.DRY HIGH PRESSURE WILL CONTINUE TO BUILD ACROSS THE REGION THROUGH
TUESDAY. RELATIVE HUMIDITY VALUES WILL DROP BELOW CRITICAL LEVELS
OVER THE WESTERN FLORIDA PANHANDLE DURING THE LATE MORNING AND
AFTERNOON HOURS BOTH DAYS.

FLZ001>006-008-052200-
/O.CON.KMOB.FW.W.0048.080505T1600Z-080506T0000Z/
/O.CON.KMOB.FW.A.0043.080506T1600Z-080507T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
519 AM CDT MON MAY 5 2008

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
7 PM CDT THIS EVENING...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH TUESDAY EVENING...

A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
7 PM CDT THIS EVENING. A FIRE WEATHER WATCH REMAINS IN EFFECT
FROM TUESDAY MORNING THROUGH TUESDAY EVENING. 

RELATIVE HUMIDITIES WILL LIKELY DROP BELOW 35 PERCENT AROUND 11 AM
THEN RISE ABOVE 35 PERCENT BY 7 PM TODAY AND TUESDAY.

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.

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

$$
000 
WWUS84 KMOB 052048
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
348 PM CDT MON MAY 5 2008

...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING ACROSS 
THE WESTERN FLORIDA PANHANDLE FOR LONG DURATIONS OF LOW RELATIVE
HUMIDITY BELOW 35 PERCENT...

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING ACROSS THE WESTERN FLORIDA PANHANDLE FOR THE
POTENTIAL OF LONG DURATIONS OF LOW RELATIVE HUMIDITY BELOW
35 PERCENT...

.DRY HIGH PRESSURE WILL CONTINUE TO BUILD ACROSS THE REGION THROUGH
TUESDAY. AS A RESULT AFTERNOON RELATIVE HUMIDITIES WILL REMAIN BELOW
CRITICAL THRESHOLDS THROUGH AROUND 7 PM THIS EVENING AND FALL BELOW
CRITICAL THRESHOLDS ONCE AGAIN BEGINNING LATE TUESDAY MORNING...
CONTINUING THROUGH EARLY TUESDAY EVENING.

FLZ001>006-008-061300-
/O.CON.KMOB.FW.W.0048.000000T0000Z-080506T0000Z/
/O.CON.KMOB.FW.A.0043.080506T1600Z-080507T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
348 PM CDT MON MAY 5 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH TUESDAY EVENING...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING.
A FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY MORNING
THROUGH TUESDAY EVENING. 

RELATIVE HUMIDITIES WILL RISE ABOVE 35 PERCENT BY 7 PM TONIGHT.

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.

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
May 4, 3:58 AM CDTFire Weather WatchMOBWalton10 hr
May 4, 3:58 AM CDTRed Flag WarningMOB10 hr
May 4, 2:17 PM CDTFire Weather WatchMOBWalton38 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.