Alert archive / Alabama / Red Flag Warnings in 2015

Red Flag Warning 3, NWS Mobile, AL

February 7, 20157 counties in Alabama

NWS Mobile, AL issued this red flag warning at Feb 7, 2015, 10:12 AM CST for 7 counties in Alabama. It took effect at Feb 7, 2015, 12:00 PM CST. It was in force for 6 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 7, 2015, 10:12 AM CST (16:12 UTC)
In effect from: Feb 7, 2015, 12:00 PM CST
Expired: Feb 7, 2015, 6:00 PM CST
In force: 6 hr
Issued by: NWS Mobile, AL

Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Crenshaw County, AL, Monroe County, AL, Wilcox County, AL

The radar

The Mobile radar (KMOB), 151 km from the middle of the area, began a volume at 16:13 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, 4.2 hours before the alert went out and 166 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2683 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 34 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.

872 
WWUS84 KMOB 071612
RFWMOB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
1012 AM CST SAT FEB 7 2015

...RED FLAG WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING FOR
CHOCTAW...NORTHERN CLARKE...WILCOX...NORTHERN MONROE...NORTHERN
CONECUH...BUTLER AND CRENSHAW COUNTIES DUE TO RELATIVE HUMIDITY
VALUES DROPPING BELOW 24 PERCENT FOR 4 HOURS OR MORE...

.AFTERNOON HUMIDITY LEVELS ARE EXPECTED TO DROP BELOW 30 PERCENT
NORTH OF THE HIGHWAY 84 CORRIDOR THIS AFTERNOON WITH SOME LOCATIONS
DROPPING TO NEAR 20 PERCENT. A RED FLAG WARNING IS IN EFFECT UNTIL 6
PM WELL INLAND.

ALZ051-053>058-080000-
/O.NEW.KMOB.FW.W.0003.150207T1800Z-150208T0000Z/
CHOCTAW-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
1012 AM CST SAT FEB 7 2015

...RED FLAG WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING FOR 
CHOCTAW...NORTHERN CLARKE...WILCOX...NORTHERN MONROE...NORTHERN
CONECUH...BUTLER AND CRENSHAW COUNTIES DUE TO RELATIVE HUMIDITY
VALUES DROPPING BELOW 24 PERCENT FOR 4 HOURS OR MORE...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 6 PM CST THIS EVENING. 

* AFFECTED AREA...FIRE WEATHER ZONES 051...053...054...055... 
  056...057 AND 058. 

* RELATIVE HUMIDITY: DROPPING TO NEAR 20 PERCENT FOR 4 HOURS OR MORE.

* WINDS: SOUTH 4 TO 8 MPH.

* 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 CAN CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

Nearby

Red Flag Warnings in Alabama, 2015 Every red flag warning in 2015

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.