Alert archive / Alabama / Red Flag Warnings in 2013

Red Flag Warning 2, NWS Mobile, AL

February 2, 2013Butler County, Covington County, Crenshaw County, Alabama

NWS Mobile, AL issued this red flag warning at Feb 2, 2013, 5:15 AM CST for Butler County, Covington County, Crenshaw County, Alabama. It took effect at Feb 2, 2013, 12:00 PM CST. It was in force for 5 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
Feb 2, 2013, 5:15 AM CST (11:15 UTC)
In effect from
Feb 2, 2013, 12:00 PM CST
Expired
Feb 2, 2013, 5:00 PM CST
In force
5 hr
Issued by
NWS Mobile, AL

Counties Butler County, AL, Covington County, AL, Crenshaw County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 11.3 hours before the alert went out and 180 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 2013-02-02Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2013-02-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939587897117Sfc1 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
2639 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
42 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.

951 
WWUS84 KMOB 021115
RFWMOB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
515 AM CST SAT FEB 2 2013

...A RED FLAG WARNING IS NOW IN EFFECT THIS AFTERNOON FOR PORTIONS
OF SOUTH CENTRAL ALABAMA DUE TO A LONG DURATION OF CRITICALLY LOW
RELATIVE HUMIDITY...

.DRY AIR WILL REMAIN OVER SOUTH CENTRAL ALABAMA TODAY WHILE
TEMPERATURES WARM INTO THE 60S. THIS WILL BRING AROUND A 4 HOUR
DURATION OF HUMIDITY LESS THAN 25 PERCENT ACROSS COVINGTON...CRENSHAW...
AND BUTLER COUNTIES.

ALZ057-058-060-022300-
/O.UPG.KMOB.FW.A.0001.130202T1700Z-130202T2300Z/
/O.NEW.KMOB.FW.W.0002.130202T1800Z-130202T2300Z/
BUTLER-CRENSHAW-COVINGTON-
515 AM CST SAT FEB 2 2013

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 5 PM CST THIS
AFTERNOON FOR PORTIONS OF SOUTH CENTRAL ALABAMA DUE TO A LONG
DURATION OF CRITICALLY LOW RELATIVE HUMIDITY...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO 5 PM CST THIS
AFTERNOON. 

* RELATIVE HUMIDITY: MINIMUM 20 PERCENT WITH A 4 HOUR DURATION LESS
  THAN 25 PERCENT.

* WINDS: SOUTHWEST 5 TO 10 MPH.

* DISPERSIONS: 50 TO 60.

* IMPACTS: ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY. OUTDOOR
  BURNING IS NOT RECOMMENDED.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF LOW
RELATIVE HUMIDITY...AND DRY FUELS WILL CREATE RAPID FIRE GROWTH
POTENTIAL.

&&

$$

Nearby

Red Flag Warnings in Alabama, 2013Every red flag warning in 2013

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.