Alert archive / Alabama / Red Flag Warnings in 2008

Red Flag Warning 82, NWS Mobile, AL

November 20, 200810 counties in Alabama

NWS Mobile, AL issued this red flag warning at Nov 20, 2008, 2:37 PM CST for 10 counties in Alabama. It took effect at Nov 22, 2008, 10:00 AM CST. 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
Nov 20, 2008, 2:37 PM CST (20:37 UTC)
In effect from
Nov 22, 2008, 10:00 AM CST
Expired
Nov 22, 2008, 5:00 PM CST
In force
7 hr
Issued by
NWS Mobile, AL

Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL

The radar

The Mobile radar (KMOB), 138 km from the middle of the area, began a volume at 20:42 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 12:00Z, 8.6 hours before the alert went out and 182 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 12:00Z on 2008-11-20Temperature 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, Birmingham, AL at 12:00Z on 2008-11-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 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
1333 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
124 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 202037
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
237 PM CST THU NOV 20 2008

...RED FLAG WARNING IS NOW IN EFFECT FROM LATE FRIDAY MORNING
THROUGH FRIDAY AFTERNOON ACROSS THE WESTERN FLORIDA PANHANDLE
AND SOUTHWEST ALABAMA FOR LONG DURATIONS OF LOW RELATIVE HUMIDITY
BELOW CRITICAL LEVELS...

...RED FLAG WARNING IS NOW IN EFFECT FROM LATE SATURDAY MORNING
THROUGH SATURDAY AFTERNOON ACROSS THE WESTERN FLORIDA PANHANDLE
AND SOUTHWEST ALABAMA FOR LONG DURATIONS OF LOW RELATIVE HUMIDITY
BELOW CRITICAL LEVELS...

.ANOTHER DRY COLD FRONT WILL PASS THROUGH THE REGION LATE THIS
EVENING. A HIGH BEHIND THAT FRONT WILL POUR DRY AIR INTO THE
REGION...AND LOWERING RELATIVE HUMIDITY BELOW RED FLAG WARNING
CRITERIA FOR ALABAMA AND WESTERN FLORIDA. THIS WILL ELEVATE THE
RISK OF EXPLOSIVE FIRE GROWTH IN THE REGION.


ALZ051>060-FLZ001>006-211245-
/O.UPG.KMOB.FW.A.0071.081121T1800Z-081122T0000Z/
/O.NEW.KMOB.FW.W.0081.081121T1700Z-081122T0000Z/
/O.NEW.KMOB.FW.W.0082.081122T1600Z-081122T2300Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-INLAND ESCAMBIA-COASTAL ESCAMBIA-
INLAND SANTA ROSA-COASTAL SANTA ROSA-INLAND OKALOOSA-
COASTAL OKALOOSA-
237 PM CST THU NOV 20 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 6 PM CST FRIDAY...
...RED FLAG WARNING IN EFFECT FROM 10 AM TO 5 PM CST SATURDAY...

ANOTHER DRY COLD FRONT WILL PASS THROUGH THE REGION LATE THIS
EVENING. A HIGH BEHIND THAT FRONT WILL POUR DRY AIR INTO THE
REGION...AND LOWERING RELATIVE HUMIDITY BELOW RED FLAG WARNING
CRITERIA FOR ALABAMA AND WESTERN FLORIDA. THIS WILL ELEVATE THE
RISK OF EXPLOSIVE FIRE GROWTH IN THE REGION.

A RED FLAG WARNING MEANS THAT DANGEROUS FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR LIKELY WILL OCCUR. A COMBINATION OF LOW
RELATIVE HUMIDITY AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE
GROWTH POTENTIAL.

$$

ALZ061>064-211245-
/O.NEW.KMOB.FW.W.0081.081121T1700Z-081122T0000Z/
/O.NEW.KMOB.FW.W.0082.081122T1600Z-081122T2300Z/
UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-LOWER BALDWIN-
237 PM CST THU NOV 20 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 6 PM CST FRIDAY...
...RED FLAG WARNING IN EFFECT FROM 10 AM TO 5 PM CST SATURDAY...

ANOTHER DRY COLD FRONT WILL PASS THROUGH THE REGION LATE THIS
EVENING. A HIGH BEHIND THAT FRONT WILL POUR DRY AIR INTO THE
REGION...AND LOWERING RELATIVE HUMIDITY BELOW RED FLAG WARNING
CRITERIA FOR ALABAMA AND WESTERN FLORIDA. THIS WILL ELEVATE THE
RISK OF EXPLOSIVE FIRE GROWTH IN THE REGION.

A RED FLAG WARNING MEANS THAT DANGEROUS FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR LIKELY WILL OCCUR. A COMBINATION OF LOW
RELATIVE HUMIDITY AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE
GROWTH POTENTIAL.

$$
3 follow-up statements
000 
WWUS84 KMOB 211132
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
532 AM CST FRI NOV 21 2008

...RED FLAG WARNING IN EFFECT FROM 11 AM TO TO 6 PM CST TODAY FOR A
SUSTAINED PERIOD OF LOW SURFACE HUMIDITY ACROSS SOUTH AND SOUTHWEST
ALABAMA AND THE FLORIDA PANHANDLE...

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 5 PM CST SATURDAY FOR A
SUSTAINED PERIOD OF LOW SURFACE HUMIDITY ACROSS SOUTH AND SOUTHWEST
ALABAMA AND THE FLORIDA PANHANDLE...

.A VERY DRY AIR MASS IS FLOWING INTO THE AREA THIS MORNING. LOWEST
AFTERNOON HUMIDITY AROUND 20 PERCENT BOTH AFTERNOONS WITH A MODERATE
WIND THIS MORNING BECOMING LIGHT BY LATE AFTERNOON.

ALZ051>064-FLZ001>006-212000-
/O.CON.KMOB.FW.W.0081.081121T1700Z-081122T0000Z/
/O.CON.KMOB.FW.W.0082.081122T1600Z-081122T2300Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
532 AM CST FRI NOV 21 2008

...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
6 PM CST THIS AFTERNOON...
...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 5 PM CST
SATURDAY...

A SUSTAINED PERIOD OF LOW RELATIVE HUMIDITY IS FORECAST FROM LATE
MORNING TO LATE AFTERNOON...BOTH TODAY AND AGAIN SATURDAY. MODERATE
NORTHERLY WINDS THIS MORNING WILL DIMINISH A LITTLE THIS
AFTERNOON...BECOMING LIGHT NORTHERLY TONIGHT AND TURNING EASTERLY BY
SATURDAY AFTERNOON. 

A RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
6 PM CST THIS AFTERNOON. A RED FLAG WARNING REMAINS IN EFFECT
FROM 10 AM TO 5 PM CST SATURDAY. 

A RED FLAG WARNING MEANS THAT DANGEROUS FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR LIKELY WILL OCCUR. A COMBINATION OF
LOW RELATIVE HUMIDITY AND DRY VEGATION WILL CREATE RAPID FIRE GROWTH
POTENTIAL.

$$
000 
WWUS84 KMOB 211928
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
128 PM CST FRI NOV 21 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS AFTERNOON FOR A
SUSTAINED PERIOD OF LOW SURFACE HUMIDITY AND GUSTY WINDS ACROSS SOUTH AND
SOUTHWEST ALABAMA AND THE FLORIDA PANHANDLE...

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 5 PM CST SATURDAY FOR
A SUSTAINED PERIOD OF LOW SURFACE HUMIDITY ACROSS SOUTH AND
SOUTHWEST ALABAMA AND THE FLORIDA PANHANDLE...

.A VERY DRY AIR MASS WILL CONTINUE TO FLOW INTO THE AREA THROUGH SATURDAY.
LOWEST AFTERNOON HUMIDITY WILL DROP TO AROUND 20 PERCENT BOTH
DAYS.

ALZ051>064-FLZ001>006-221130-
/O.CON.KMOB.FW.W.0081.000000T0000Z-081122T0000Z/
/O.CON.KMOB.FW.W.0082.081122T1600Z-081122T2300Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
128 PM CST FRI NOV 21 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...
...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 5 PM CST
SATURDAY...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON. A RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO
5 PM CST SATURDAY. 

A RED FLAG WARNING MEANS THAT DANGEROUS FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR LIKELY WILL OCCUR. A COMBINATION OF LOW
RELATIVE HUMIDITY AND DRY VEGETATION WILL CREATE RAPID FIRE GROWTH
POTENTIAL.

$$
000 
WWUS84 KMOB 221146
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
546 AM CST SAT NOV 22 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 5 PM CST THIS AFTERNOON
FOR A SUSTAINED PERIOD OF LOW SURFACE HUMIDITY OVER SOUTHWEST AND
SOUTH ALABAMA AND THE WEST FLORIDA PANHANDLE...


.A VERY DRY AIR MASS WILL CONTINUE OVER THE AREA TODAY. LOWEST
AFTERNOON HUMIDITY WILL DROP TO AROUND 20 PERCENT OVER THE INTERIOR
AND BETWEEN 25 AND 30 PERCENT NEAR THE COAST. SURFACE HUMIDITY WILL
BEGIN TO RECOVER THIS EVENING AS WINDS SLOWLY BECOME MORE SOUTHEAST.

ALZ051>064-FLZ001>006-222000-
/O.CON.KMOB.FW.W.0082.081122T1600Z-081122T2300Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
546 AM CST SAT NOV 22 2008

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
5 PM CST THIS AFTERNOON...

A RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
5 PM CST THIS AFTERNOON. 

A RED FLAG WARNING MEANS THAT DANGEROUS FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR LIKELY WILL OCCUR. A COMBINATION OF
LOW RELATIVE HUMIDITY AND DRY VEGETATION WILL CREATE RAPID FIRE
GROWTH POTENTIAL.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 20, 4:07 AM CSTFire Weather WatchMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more11 hr
Nov 20, 4:18 AM CSTFreeze WatchMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more11 hr
Nov 20, 2:37 PM CSTRed Flag WarningMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more27 hr
Nov 20, 3:16 PM CSTHard Freeze WatchMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more22 hr
Nov 20, 3:55 PM CSTSmall Craft AdvisoryMOB44 hr

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.