Alert archive / Alabama / Red Flag Warnings in 2007
Red Flag Warning 7, NWS Birmingham, AL
NWS Birmingham, AL issued this red flag warning at May 13, 2007, 1:21 PM CDT for 18 counties in Alabama. It was in force for 4 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 13, 2007, 1:21 PM CDT (18:21 UTC)
- Expired
- May 13, 2007, 5:00 PM CDT
- In force
- 4 hr
- Issued by
- NWS Birmingham, AL
Counties Blount County, AL, Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Etowah County, AL, Fayette County, AL, Jefferson County, AL, Lamar County, AL, Marion County, AL, Pickens County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL
The radar
The Birmingham radar (KBMX), 57 km from the middle of the area, began a volume at 18:22 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, 6.4 hours before the alert went out and 56 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
- 279 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1387 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS84 KBMX 131821 RFWBMX RED FLAG WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 121 PM CDT SUN MAY 13 2007 ...|DRY AND BREEZY CONDITIONS EXPECTED THIS AFTERNOON... ALZ011>015-017>029-132200- /O.NEW.KBMX.FW.W.0007.070513T1821Z-070513T2200Z/ MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN- CHEROKEE-CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR- TALLADEGA-CLAY-RANDOLPH- 121 PM CDT SUN MAY 13 2007 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON. RELATIVE HUMIDITIES THIS AFTERNOON WILL DROP INTO THE 25 TO 30 PERCENT RANGE...KBDI VALUES ARE NOW GENERALLY ABOVE 500...WHILE 20 FOOT WINDS WILL BE AROUND 10 MPH WITH A FEW GUST. 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. $$
1 follow-up statement
000 WWUS84 KBMX 131822 CCA RFWBMX RED FLAG WARNING...CORRECTED NATIONAL WEATHER SERVICE BIRMINGHAM AL 121 PM CDT SUN MAY 13 2007 ...DRY AND BREEZY CONDITIONS EXPECTED THIS AFTERNOON... ALZ011>015-017>029-132200- /O.NEW.KBMX.FW.W.0007.070513T1821Z-070513T2200Z/ MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN- CHEROKEE-CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR- TALLADEGA-CLAY-RANDOLPH- 121 PM CDT SUN MAY 13 2007 ...RED FLAG WARNING IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON. RELATIVE HUMIDITIES THIS AFTERNOON WILL DROP INTO THE 25 TO 30 PERCENT RANGE...KBDI VALUES ARE NOW GENERALLY ABOVE 500...WHILE 20 FOOT WINDS WILL BE AROUND 10 MPH WITH A FEW GUST. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. $$
Nearby
Red Flag Warnings in Alabama, 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.