Alert archive / Alabama / Red Flag Warnings in 2013

Red Flag Warning 7, NWS Mobile, AL

March 25, 20135 counties in Mississippi; 10 counties in Alabama

NWS Mobile, AL issued this red flag warning at Mar 25, 2013, 6:32 AM CDT for 5 counties in Mississippi; 10 counties in Alabama. It took effect at Mar 25, 2013, 11:00 AM CDT. It was in force for 8 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: Mar 25, 2013, 6:32 AM CDT (11:32 UTC)
In effect from: Mar 25, 2013, 11:00 AM CDT
Expired: Mar 25, 2013, 7:00 PM CDT
In force: 8 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, George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 96 km from the middle of the area, began a volume at 11:33 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

Slidell Radar S, LA (KSIL), launched 00:00Z, 11.5 hours before the alert went out and 226 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: 2534 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: -132 m²/s²
0-3 km storm-relative helicity: -248 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.

608 
WWUS84 KMOB 251132
RFWMOB

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
632 AM CDT MON MAR 25 2013

...A RED FLAG WARNING IS NOW IN EFFECT FROM LATE THIS MORNING THROUGH
EARLY MONDAY EVENING FOR SOUTHWEST ALABAMA...SOUTHEAST MISSISSIPPI
AND THE WESTERN FLORIDA PANHANDLE DUE TO LONG DURATION OF VERY LOW
RELATIVE HUMIDITY COMBINED WITH 20 FOOT WIND VELOCITIES AROUND 15
KNOTS OR HIGHER WITH FREQUENT GUSTS ABOVE 20 KNOTS...

.A VERY DRY AIRMASS WILL MOVE ACROSS THE CENTRAL GULF COAST
REGION THROUGH MIDWEEK. THIS AFTERNOON RELATIVE HUMIDITY VALUES WILL
FALL INTO THE UPPER TEENS TO LOWER 20S ACROSS ALL INTERIOR AREAS AND
LOWER 20S CLOSER TO THE COAST. 20 FOOT WINDS...MOSTLY FROM THE
NORTHWEST...WILL ALSO AVERAGE AROUND 15 KNOTS WITH FREQUENT GUSTS
BETWEEN 20 TO 25 KNOTS THIS AFTERNOON. THESE CONDITIONS REQUIRE THAT
A RED FLAG WARNING BE ISSUED FOR THE ENTIRE FORECAST AREA TODAY.
 
ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-260000-
/O.UPG.KMOB.FW.A.0007.130325T1600Z-130326T0000Z/
/O.NEW.KMOB.FW.W.0007.130325T1600Z-130326T0000Z/
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-WAYNE-PERRY-
GREENE-STONE-GEORGE-
632 AM CDT MON MAR 25 2013

...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT
THIS EVENING DUE TO LONG DURATION OF VERY LOW RELATIVE HUMIDITY COMBINED
WITH 20 FOOT WIND VELOCITIES AROUND 15 KNOTS OR HIGHER WITH FREQUENT GUSTS 
ABOVE 20 KNOTS...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM 11 AM THIS MORNING TO 7 PM CDT
THIS EVENING. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

* AFFECTED AREA...FIRE WEATHER ZONES 051...052...053...054... 
  055...056...057...058...059...060...061...062...063 AND 064. 
  FIRE WEATHER ZONES 001...002...003...004...005 AND 006. FIRE 
  WEATHER ZONES 067...075...076...078 AND 079. 

* RELATIVE HUMIDITY: UPPER TEENS TO LOWER 20 PERCENT FROM LATE THIS
  MORNING THROUGH EARLY THIS EVENING.

* WINDS: 13 TO 17 KNOTS WITH FREQUENT GUSTS BETWEEN 20 AND 25 KNOTS
  ESPECIALLY THIS AFTERNOON. 

* DISPERSIONS: 75 TO 90 DURING THE DAY.

* ERC: ERC VALUES 25 TO 35.

* 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.

&&

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 24, 7:22 PM CDT	Wind Advisory	MOB	George, Greene, Perry, Stone, Wayne	3 hr
Mar 25, 4:04 AM CDT	Freeze Watch	MOB	George, Greene, Perry, Stone, Wayne	10 hr
Mar 25, 4:04 AM CDT	Wind Advisory	MOB	George, Greene, Perry, Stone, Wayne	14 hr
Mar 25, 1:45 PM CDT	Freeze Warning	MOB	George, Greene, Perry, Stone, Wayne	18 hr

Nearby

Red Flag Warnings in Alabama, 2013 Red Flag Warnings in Mississippi, 2013 Red Flag Warnings in Florida, 2013 Every 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; radar from the NEXRAD Level II archive.