Alert archive / Alabama / Red Flag Warnings in 2011
Red Flag Warning 10, NWS Birmingham, AL
NWS Birmingham, AL issued this red flag warning at Aug 28, 2011, 11:20 AM CDT for 23 counties in Alabama. It took effect at Aug 28, 2011, 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
- Aug 28, 2011, 11:20 AM CDT (16:20 UTC)
- In effect from
- Aug 28, 2011, 12:00 PM CDT
- Expired
- Aug 28, 2011, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Birmingham, AL
All 23 counties
Autauga County, AL, Barbour County, AL, Bibb County, AL, Bullock County, AL, Chambers County, AL, Chilton County, AL, Coosa County, AL, Dallas County, AL, Elmore County, AL, Greene County, AL, Hale County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Montgomery County, AL, Perry County, AL, Pickens County, AL, Pike County, AL, Russell County, AL, Sumter County, AL, Tallapoosa County, AL, Tuscaloosa County, AL
The radar
The Birmingham radar (KBMX), 69 km from the middle of the area, began a volume at 16:26 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, 4.3 hours before the alert went out and 70 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1654 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
246 WWUS84 KBMX 281620 RFWBMX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BIRMINGHAM AL 1120 AM CDT SUN AUG 28 2011 ...DRY AND BREEZY CONDITIONS EXPECTED AGAIN THIS AFTERNOON... .DRY CONDITIONS WILL PERSIST TODAY WITH RH VALUES DROPPING BELOW 30 PERCENT FOR SEVERAL HOURS THIS AFTERNOON ACROSS THE SOUTHEAST COUNTIES. THE GREATEST CONCERN WILL BE FOR AREAS GENERALLY ALONG AND SOUTH OF A SELMA TO LAFAYETTE LINE. NORTHWEST WINDS WILL ALSO BE AROUND 10 MPH DURING THE AFTERNOON. OUTDOOR BURNING IS HIGHLY DISCOURAGED. ALZ037-038-040>050-290000- /O.NEW.KBMX.FW.W.0010.110828T1700Z-110829T0000Z/ TALLAPOOSA-CHAMBERS-DALLAS-AUTAUGA-LOWNDES-ELMORE-MONTGOMERY- MACON-BULLOCK-LEE-RUSSELL-PIKE-BARBOUR- 1120 AM CDT SUN AUG 28 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR SOUTHEAST CENTRAL ALABAMA... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. * WINDS...NORTHWEST AROUND 10 MPH. * RELATIVE HUMIDITY...AS LOW AS 26 PERCENT. * IMPACTS...THE COMBINATION OF A DRY AIRMASS AND WINDY CONDITIONS WILL RESULT IN CRITICAL FIRE WEATHER CONDITIONS. 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 STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. FOR ADDITIONAL INFORMATION ON THE FIRE CONDITIONS...PLEASE CONTACT THE ALABAMA FORESTRY COMMISSION AT WWW.FORESTRY.ALABAMA.GOV. && $$
1 follow-up statement
396 WWUS84 KBMX 282000 RFWBMX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE BIRMINGHAM AL 300 PM CDT SUN AUG 28 2011 ...DRY AND BREEZY CONDITIONS EXPECTED AGAIN THIS AFTERNOON... .DRY CONDITIONS WILL PERSIST TODAY WITH RH VALUES DROPPING BELOW 30 PERCENT FOR SEVERAL HOURS THIS AFTERNOON ACROSS THE SOUTH. NORTHWEST WINDS OF AROUND 10 MPH WILL PERSIST THROUGH THE REMAINDER OF THE AFTERNOON AS WELL. OUTDOOR BURNING IS HIGHLY DISCOURAGED. ALZ022-023-030>036-039-290000- /O.EXA.KBMX.FW.W.0010.000000T0000Z-110829T0000Z/ PICKENS-TUSCALOOSA-SUMTER-GREENE-HALE-PERRY-BIBB-CHILTON-COOSA- MARENGO- 300 PM CDT SUN AUG 28 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR SOUTH CENTRAL ALABAMA... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. * WINDS...NORTH 10 TO 15 MPH WITH GUSTS UP TO 20 MPH. * RELATIVE HUMIDITY...AS LOW AS 28 PERCENT. * IMPACTS...THE COMBINATION OF A DRY AIRMASS AND WINDY CONDITIONS WILL RESULT IN CRITICAL FIRE WEATHER CONDITIONS. OUTDOOR BURNING IS NOT RECOMMENDED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. FOR ADDITIONAL INFORMATION ON THE FIRE CONDITIONS...PLEASE CONTACT THE ALABAMA FORESTRY COMMISSION AT WWW.FORESTRY.ALABAMA.GOV. && $$ ALZ037-038-040>050-290000- /O.CON.KBMX.FW.W.0010.000000T0000Z-110829T0000Z/ TALLAPOOSA-CHAMBERS-DALLAS-AUTAUGA-LOWNDES-ELMORE-MONTGOMERY- MACON-BULLOCK-LEE-RUSSELL-PIKE-BARBOUR- 300 PM CDT SUN AUG 28 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR SOUTH CENTRAL ALABAMA... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING. * WINDS...NORTHWEST AROUND 10 MPH. * RELATIVE HUMIDITY...AS LOW AS 26 PERCENT. * IMPACTS...THE COMBINATION OF A DRY AIRMASS AND WINDY CONDITIONS WILL RESULT IN CRITICAL FIRE WEATHER CONDITIONS. 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 STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. FOR ADDITIONAL INFORMATION ON THE FIRE CONDITIONS...PLEASE CONTACT THE ALABAMA FORESTRY COMMISSION AT WWW.FORESTRY.ALABAMA.GOV. && $$
Nearby
Red Flag Warnings in Alabama, 2011Every red flag warning in 2011
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.