Alert archive / Alabama / Red Flag Warnings in 2007

Red Flag Warning 35, NWS Mobile, AL

April 6, 200710 counties in Alabama; Walton County, Florida

NWS Mobile, AL issued this red flag warning at Apr 6, 2007, 5:45 AM CDT for 10 counties in Alabama; Walton County, Florida. It took effect at Apr 6, 2007, 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
Apr 6, 2007, 5:45 AM CDT (10:45 UTC)
In effect from
Apr 6, 2007, 12:00 PM CDT
Expired
Apr 6, 2007, 7:00 PM CDT
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, Walton County, FL

The radar

The Mobile radar (KMOB), 138 km from the middle of the area, began a volume at 10:48 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, 10.8 hours before the alert went out and 189 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 2007-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 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 2007-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.193958Sfc1 km3 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
2605 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
-23 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 061045
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
545 AM CDT FRI APR 6 2007

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CDT TODAY FOR
THE WESTERN FLORIDA PANHANDLE AND SOUTHWEST ALABAMA DUE TO
EXPECTED LONG DURATIONS OF LOW RELATIVE HUMIDITY BELOW 25 PERCENT
AND NORTHERLY WINDS AT TIMES AROUND 15 MPH...

...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
FRIDAY EVENING FOR THE WESTERN FLORIDA PANHANDLE FOR A SUSTAINED
PERIOD OF LOW RELATIVE HUMIDITY...

.DISCUSSION...A VERY DRY AIRMASS WILL REMAIN IN PLACE ACROSS SOUTH
ALABAMA AND THE WESTERN FLORIDA PANHANDLE THROUGH SATURDAY. DAYTIME
RELATIVE HUMIDITY IS FORECAST TO FALL BELOW CRITICAL LEVELS FOR
SEVERAL HOURS TODAY ALONG WITH MODERATE NORTHERLY WINDS. SIMILAR
CONDITIONS ARE POSSIBLE ON SATURDAY. 

FLZ001>006-008-062000-
/O.UPG.KMOB.FW.A.0027.070406T1700Z-070407T0000Z/
/O.NEW.KMOB.FW.W.0035.070406T1700Z-070407T0000Z/
/O.NEW.KMOB.FW.A.0028.070407T1600Z-070408T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
545 AM CDT FRI APR 6 2007

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY 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. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE
WEATHER WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY
EVENING. 

LOWEST DAYTIME RELATIVE HUMIDITIES ARE FORECAST TO DROP TO AROUND 23
PERCENT FOR SEVERAL HOURS OVER THE NEXT COUPLE AFTERNOONS.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST. A COMBINATION OF NORTHERLY WINDS AROUND 15 MPH AND
LOW RELATIVE HUMIDITIES WILL CREATE AN INCREASED POTENTIAL FOR
THE SPREAD OF FIRES ON THURSDAY OVER THE FLORIDA PANHANDLE.

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

$$

ALZ051>064-062000-
/O.NEW.KMOB.FW.W.0035.070406T1700Z-070407T0000Z/
/O.NEW.KMOB.FW.A.0028.070407T1600Z-070408T0000Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-
545 AM CDT FRI APR 6 2007

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 7 PM CDT THIS
EVENING...
...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY 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. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED. THIS FIRE
WEATHER WATCH IS IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY
EVENING. 

LOWEST DAYTIME RELATIVE HUMIDITIES ARE FORECAST TO DROP TO AROUND 23
PERCENT FOR SEVERAL HOURS OVER THE NEXT COUPLE AFTERNOONS.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF GUSTY WINDS
AND VERY 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 061905
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
205 PM CDT FRI APR 6 2007

...RED FLAG WARNING CONTINUES THROUGH 7 PM CDT THIS EVENING FOR THE WESTERN
FLORIDA PANHANDLE AND SOUTHWEST ALABAMA DUE TO EXPECTED LONG
DURATIONS OF LOW RELATIVE HUMIDITY BELOW 25 PERCENT AND NORTHERLY
WINDS AT TIMES AROUND 15 MPH...

...A RED FLAG WARNING IS NOW IN EFFECT FOR SATURDAY FROM 11 AM THROUGH
7 PM CDT FOR THE WESTERN FLORIDA PANHANDLE AND SOUTHWEST ALABAMA DUE
TO EXPECTED LONG DURATIONS OF LOW RELATIVE HUMIDITY BELOW 25 PERCENT...

.DISCUSSION...A VERY DRY AIRMASS WILL REMAIN IN PLACE ACROSS
SOUTH ALABAMA AND THE WESTERN FLORIDA PANHANDLE THROUGH SATURDAY.
LOWEST DAYTIME RELATIVE HUMIDITIES ARE FORECAST TO BE WITHIN CRITICAL
FIRE GROWTH THRESHOLDS THROUGH THE REMAINDER OF THE DAY AND AGAIN FOR
SATURDAY.

ALZ051>064-FLZ001>006-008-070315-
/O.UPG.KMOB.FW.A.0028.070407T1600Z-070408T0000Z/
/O.NEW.KMOB.FW.W.0036.070407T1600Z-070408T0000Z/
/O.CON.KMOB.FW.W.0035.000000T0000Z-070407T0000Z/
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-
COASTAL WALTON-
205 PM CDT FRI APR 6 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM CDT SATURDAY...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH REMAINS IN EFFECT THROUGH 7 PM CDT TONIGHT. THE FIRE
WEATHER WATCH IN EFFECT SATURDAY HAS BEEN UPGRADED TO A RED FLAG
WARNING.

LOWEST DAYTIME RELATIVE HUMIDITIES ARE FORECAST TO DROP TO AROUND 25 PERCENT
OR LESS FOR SEVERAL HOURS OVER THE NEXT COUPLE AFTERNOONS.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST. A COMBINATION OF GUSTY WINDS THIS AFTERNOON AND VERY
LOW RELATIVE HUMIDITY BOTH THIS AFTERNOON AND SATURDAY WILL CREATE
CONDITIONS THAT INCREASE FIRE GROWTH POTENTIAL.


$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 3:59 AM CDTFreeze WatchMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more24 hr
Apr 6, 3:59 AM CDTFreeze WarningMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more24 hr
Apr 6, 5:45 AM CDTFire Weather WatchMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more8 hr
Apr 6, 2:05 PM CDTRed Flag WarningMOBButler, Choctaw, Clarke, Conecuh, Covington, Crenshaw and 4 more29 hr

Nearby

Red Flag Warnings in Alabama, 2007Red Flag Warnings in Florida, 2007Every red flag warning in 2007

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.