Alert archive / Alabama / Frost Advisories in 2012
Frost Advisory 6, NWS Birmingham, AL
NWS Birmingham, AL issued this frost advisory at Nov 16, 2012, 3:08 PM CST for 21 counties in Alabama. It took effect at Nov 17, 2012, 3:00 AM CST. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Nov 16, 2012, 3:08 PM CST (21:08 UTC)
- In effect from
- Nov 17, 2012, 3:00 AM CST
- Expired
- Nov 17, 2012, 7:00 AM CST
- In force
- 4 hr
- Issued by
- NWS Birmingham, AL
All 21 counties
Bibb County, AL, Blount County, AL, Calhoun County, AL, Chambers 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, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL
The radar
The Birmingham radar (KBMX), 47 km from the middle of the area, began a volume at 21:09 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, 9.1 hours before the alert went out and 46 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
- 1183 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- -43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
129 WWUS74 KBMX 162108 NPWBMX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE BIRMINGHAM AL 308 PM CST FRI NOV 16 2012 ...COLD TEMPERATURES ACROSS CENTRAL ALABAMA... ALZ011>015-017>029-034-037-038-171300- /O.NEW.KBMX.FR.Y.0006.121117T0900Z-121117T1300Z/ MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN- CHEROKEE-CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR- TALLADEGA-CLAY-RANDOLPH-BIBB-TALLAPOOSA-CHAMBERS- INCLUDING THE CITIES OF...HAMILTON...SULLIGENT...VERNON... FAYETTE...DOUBLE SPRINGS...JASPER...ONEONTA...GADSDEN... ANNISTON...CENTRE...HEFLIN...CARROLLTON...TUSCALOOSA... BIRMINGHAM...HOOVER...COLUMBIANA...PELHAM...ALABASTER... PELL CITY...MOODY...TALLADEGA...SYLACAUGA...ASHLAND...ROANOKE... CENTREVILLE...ALEXANDER CITY...DADEVILLE...VALLEY...LANETT... LAFAYETTE 308 PM CST FRI NOV 16 2012 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 7 AM CST SATURDAY... THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 7 AM CST SATURDAY. * TEMPERATURES...WILL FALL INTO THE MID 30S. * IMPACTS...OF FROST INCLUDE THE POSSIBILITY OF SENSITIVE OUTDOOR PLANTS BEING KILLED IF LEFT UNCOVERED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
The office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 15, 10:05 PM CST | Frost Advisory | BMX | Bibb, Chilton, Clay, Greene, Hale, Jefferson and 8 more | 9 hr |
| Nov 15, 10:05 PM CST | Freeze Warning | BMX | Blount, Calhoun, Cherokee, Cleburne, Etowah, Fayette and 5 more | 9 hr |
Nearby
Frost Advisories in Alabama, 2012Every frost advisory in 2012
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.