Alert archive / Florida / Red Flag Warnings in 2007

Red Flag Warning 52, NWS Mobile, AL

May 9, 2007Walton County, Florida

NWS Mobile, AL issued this red flag warning at May 9, 2007, 5:17 AM CDT for Walton County, Florida. It took effect at May 9, 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
May 9, 2007, 5:17 AM CDT (10:17 UTC)
In effect from
May 9, 2007, 12:00 PM CDT
Expired
May 9, 2007, 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 10:21 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 00:00Z, 10.3 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 00:00Z on 2007-05-09Temperature 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, Tallahassee Rgnl, FL at 00:00Z on 2007-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
2118 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
48 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 091017
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
517 AM CDT WED MAY 9 2007

...A RED FLAG WARNING IS IN EFFECT FOR THE FOLLOWING COUNTIES 
IN NORTHWEST FLORIDA DUE TO CRITICALLY LOW AFTERNOON RELATIVE 
HUMIDITIES...

.ESCAMBIA...SANTA ROSA...OKALOOSA AND COASTAL WALTON.

.DISCUSSION...DRY AIR ADVECTING SOUTHWARD OVER THE CENTRAL GULF COAST
REGION WILL CONTINUE THROUGH TONIGHT AS A BROAD AREA OF LOW PRESSURE
WEAKENS SLOWLY NEAR THE NORTHEAST FLORIDA GEORGIA COAST. AFTERNOON
RELATIVE HUMIDITIES ARE EXPECTED TO BE ABOVE CRITICAL THRESHOLDS
THURSDAY THROUGH MONDAY AS INCREASED LOW LEVEL MOISTURE ADVECTS 
EASTWARD.

FLZ001>006-008-091830-
/O.UPG.KMOB.FW.A.0042.070509T1700Z-070510T0000Z/
/O.NEW.KMOB.FW.W.0052.070509T1700Z-070510T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
517 AM CDT WED MAY 9 2007

...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. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

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.

$$
1 follow-up statement
000 
WWUS84 KMOB 091935
RFWMOB

RED FLAG WARNING
NATIONAL WEATHER SERVICE MOBILE AL
235 PM CDT WED MAY 9 2007

...A RED FLAG WARNING IS IN EFFECT UNTIL 7 PM FOR THE FOLLOWING 
COUNTIES IN NORTHWEST FLORIDA DUE TO CRITICALLY LOW RELATIVE 
HUMIDITIES...

.ESCAMBIA...SANTA ROSA...OKALOOSA AND COASTAL WALTON.

.DISCUSSION...DRY AIR ADVECTING SOUTHWARD OVER THE CENTRAL GULF COAST
REGION WILL CONTINUE THROUGH TONIGHT AS A BROAD AREA OF LOW PRESSURE
WEAKENS SLOWLY NEAR THE NORTHEAST FLORIDA GEORGIA COAST. AFTERNOON
RELATIVE HUMIDITIES ARE EXPECTED TO BE ABOVE CRITICAL THRESHOLDS
THURSDAY THROUGH MONDAY AS INCREASED LOW LEVEL MOISTURE ADVECTS 
EASTWARD.

FLZ001>006-008-100000-
/O.CON.KMOB.FW.W.0052.000000T0000Z-070510T0000Z/
INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-
COASTAL WALTON-
235 PM CDT WED MAY 9 2007

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...

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.

$$

Nearby

Red 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.