Alert archive / Alabama / Red Flag Warnings in 2008

Red Flag Warning 46, NWS Mobile, AL

April 30, 20088 counties in Alabama; Walton County, Florida

NWS Mobile, AL issued this red flag warning at Apr 30, 2008, 6:08 AM CDT for 8 counties in Alabama; Walton County, Florida. It took effect at Apr 30, 2008, 10:00 AM CDT. It was in force for 9 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 30, 2008, 6:08 AM CDT (11:08 UTC)
In effect from
Apr 30, 2008, 10:00 AM CDT
Expired
Apr 30, 2008, 7:00 PM CDT
In force
9 hr
Issued by
NWS Mobile, AL

Counties Butler County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Wilcox County, AL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 138 km from the middle of the area, began a volume at 11:09 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

Birmingham, AL (KBMX), launched 00:00Z, 11.1 hours before the alert went out and 192 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, Birmingham, AL at 00:00Z on 2008-04-30Temperature 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, Birmingham, AL at 00:00Z on 2008-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 square meters per square second.19395878Sfc1 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
2635 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
63 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 301109
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
608 AM CDT WED APR 30 2008

...A RED FLAG WARNING REMAINS IN EFFECT THIS AFTERNOON THROUGH THIS
EVENING FOR AN EXTENDED PERIOD OF LOW RELATIVE HUMIDITY OVER THE
WESTERN FLORIDA PANHANDLE AND SOUTHWEST ALABAMA...

.HIGH PRESSURE OVER THE EASTERN STATES WILL CONTINUE TO MOVE
EAST...WITH INCREASING ONSHORE FLOW THROUGH THE DAY. A VERY DRY
AIRMASS IS PRESENT OVER THE AREA...THOUGH...WITH AFTERNOON RH LEVELS
EXPECTED TO DROP TO AROUND 25 PERCENT CLOSER TO THE COAST...AND INTO
THE 20 TO 25 PERCENT RANGE INLAND. 

FLZ001>006-008-301900-
/O.UPG.KMOB.FW.A.0040.080430T1700Z-080501T0000Z/
/O.NEW.KMOB.FW.W.0046.080430T1500Z-080501T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
608 AM CDT WED APR 30 2008

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT
THIS EVENING...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 10 AM THIS MORNING TO 7 PM CDT
THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

A DRY AIRMASS WILL CONTINUE OVER THE AREA THROUGH TODAY...WITH
DAYTIME RELATIVE HUMIDITY LEVELS DROPPING TO AROUND 25 PERCENT
RANGE THIS AFTERNOON.

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.

$$

ALZ056>060-301900-
/O.UPG.KMOB.FW.A.0040.080430T1700Z-080501T0000Z/
/O.NEW.KMOB.FW.W.0046.080430T1800Z-080430T2300Z/
CONECUH-BUTLER-CRENSHAW-ESCAMBIA-COVINGTON-
608 AM CDT WED APR 30 2008

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 6 PM CDT THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 1 PM TO 6 PM CDT THIS
AFTERNOON. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

A DRY AIRMASS WILL CONTINUE OVER THE AREA THROUGH TODAY...WITH
DAYTIME RELATIVE HUMIDITY LEVELS DROPPING INTO THE 20 TO 25 PERCENT
RANGE THIS AFTERNOON.

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.

$$

ALZ053>055-062-301900-
/O.NEW.KMOB.FW.W.0046.080430T1800Z-080430T2300Z/
CLARKE-WILCOX-MONROE-UPPER BALDWIN-
608 AM CDT WED APR 30 2008

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 6 PM CDT THIS
AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 1 PM TO 6 PM CDT THIS
AFTERNOON. 

A DRY AIRMASS WILL CONTINUE OVER THE AREA THROUGH TODAY...WITH
DAYTIME RELATIVE HUMIDITY LEVELS DROPPING INTO THE 20 TO 25 PERCENT
RANGE THIS AFTERNOON.

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 Alabama, 2008Red 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.