Alert archive / Georgia / Frost Advisories in 2012

Frost Advisory 7, NWS Atlanta, GA

November 17, 201236 counties in Georgia

NWS Atlanta, GA issued this frost advisory at Nov 17, 2012, 1:41 PM EST for 36 counties in Georgia. It took effect at Nov 18, 2012, 1:00 AM EST. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued
Nov 17, 2012, 1:41 PM EST (18:41 UTC)
In effect from
Nov 18, 2012, 1:00 AM EST
Expired
Nov 18, 2012, 9:00 AM EST
In force
8 hr
Issued by
NWS Atlanta, GA
All 36 counties

Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Haralson County, GA, Heard County, GA, Henry County, GA, Lumpkin County, GA, Meriwether County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Spalding County, GA, Towns County, GA, Troup County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA

The radar

The Atlanta radar (KFFC), 82 km from the middle of the area, began a volume at 18:43 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.7 hours before the alert went out and 82 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2012-11-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2012-11-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -47 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1281 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
-47 m²/s²
0-3 km storm-relative helicity
17 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.

159 
WWUS72 KFFC 171841
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
141 PM EST SAT NOV 17 2012

...AREAS OF FROST CAN BE EXPECTED EARLY SUNDAY MORNING FOR NORTH
AND PARTS OF WEST CENTRAL GEORGIA...

.MOSTLY CLEAR SKIES AND CALM WINDS WILL ALLOW TEMPERATURES TO
DROP INTO THE MID TO UPPER 30S ACROSS MUCH OF NORTH AND PARTS OF
CENTRAL GEORGIA EARLY SUNDAY MORNING.

GAZ001>009-011>016-019>022-030>033-041>045-052>057-066>068-181400-
/O.NEW.KFFC.FR.Y.0007.121118T0600Z-121118T1400Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-POLK-PAULDING-COBB-NORTH FULTON-HARALSON-CARROLL-
DOUGLAS-SOUTH FULTON-DEKALB-HEARD-COWETA-FAYETTE-CLAYTON-SPALDING-
HENRY-TROUP-MERIWETHER-PIKE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...MARIETTA...ATLANTA...CARROLLTON...
DOUGLASVILLE...EAST POINT...DECATUR...NEWNAN...PEACHTREE CITY...
GRIFFIN
141 PM EST SAT NOV 17 2012

...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM EST SUNDAY FOR NORTH
AND PARTS OF WEST CENTRAL GEORGIA...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 9 AM EST SUNDAY.

* LOCATIONS...NORTH AND PORTIONS OF WEST CENTRAL GEORGIA.

* TEMPERATURES...IN THE MID AND UPPER 30S.

* TIMING...1 AM TO 9 AM SUNDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
2 follow-up statements
724 
WWUS72 KFFC 180836
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
336 AM EST SUN NOV 18 2012

...AREAS OF FROST CAN BE EXPECTED EARLY THIS MORNING FOR NORTH
AND PARTS OF WEST CENTRAL GEORGIA...

.MOSTLY CLEAR SKIES AND CALM WINDS WILL ALLOW TEMPERATURES TO
DROP INTO THE MID TO UPPER 30S ACROSS MUCH OF NORTH AND PARTS OF
CENTRAL GEORGIA EARLY THIS MORNING.

GAZ001>009-011>016-019>022-030>033-041>045-052>057-066>068-181400-
/O.CON.KFFC.FR.Y.0007.000000T0000Z-121118T1400Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-POLK-PAULDING-COBB-NORTH FULTON-HARALSON-CARROLL-
DOUGLAS-SOUTH FULTON-DEKALB-HEARD-COWETA-FAYETTE-CLAYTON-SPALDING-
HENRY-TROUP-MERIWETHER-PIKE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...MARIETTA...ATLANTA...CARROLLTON...
DOUGLASVILLE...EAST POINT...DECATUR...NEWNAN...PEACHTREE CITY...
GRIFFIN
336 AM EST SUN NOV 18 2012

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS MORNING...

* LOCATIONS...NORTH AND PORTIONS OF WEST CENTRAL GEORGIA.

* TEMPERATURES...IN THE MID AND UPPER 30S.

* TIMING...1 AM TO 9 AM THIS MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
755 
WWUS72 KFFC 181356
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
856 AM EST SUN NOV 18 2012

GAZ001>009-011>016-019>022-030>033-041>045-052>057-066>068-181500-
/O.EXP.KFFC.FR.Y.0007.000000T0000Z-121118T1400Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-FORSYTH-POLK-PAULDING-COBB-NORTH FULTON-HARALSON-CARROLL-
DOUGLAS-SOUTH FULTON-DEKALB-HEARD-COWETA-FAYETTE-CLAYTON-SPALDING-
HENRY-TROUP-MERIWETHER-PIKE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...MARIETTA...ATLANTA...CARROLLTON...
DOUGLASVILLE...EAST POINT...DECATUR...NEWNAN...PEACHTREE CITY...
GRIFFIN
856 AM EST SUN NOV 18 2012

...FROST ADVISORY WILL EXPIRE AT 9 AM EST THIS MORNING...

TEMPERATURES ACROSS THE ADVISORY AREA HAVE RISEN INTO THE UPPER
30S AND 40S AND THEREFORE FROST IS NO LONGER EXPECTED.

$$

Nearby

Frost Advisories in Georgia, 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.