Alert archive / Georgia / Frost Advisories in 2018

Frost Advisory 2, NWS Atlanta, GA

October 21, 201863 counties in Georgia

NWS Atlanta, GA issued this frost advisory at Oct 21, 2018, 3:01 PM EDT for 63 counties in Georgia. It took effect at Oct 22, 2018, 2:00 AM EDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Oct 21, 2018, 3:01 PM EDT (19:01 UTC)
In effect from
Oct 22, 2018, 2:00 AM EDT
Expired
Oct 22, 2018, 8:00 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
All 63 counties

Baldwin County, GA, Banks County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clarke 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, Glascock County, GA, Gordon County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Hancock County, GA, Haralson County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Jones County, GA, Lamar County, GA, Lumpkin County, GA, Madison County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Murray County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Putnam County, GA, Rockdale County, GA, Spalding County, GA, Taliaferro County, GA, Troup County, GA, Upson County, GA, Walker County, GA, Walton County, GA, Warren County, GA, Washington County, GA, White County, GA, Whitfield County, GA, Wilkes County, GA

The radar

The Atlanta radar (KFFC), 66 km from the middle of the area, began a volume at 19:06 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, 7.0 hours before the alert went out and 62 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 2018-10-21Temperature 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 2018-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -132 square meters per square second.1939587897Sfc1 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
1659 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-132 m²/s²
0-3 km storm-relative helicity
26 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

113 
WWUS72 KFFC 211901
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
301 PM EDT Sun Oct 21 2018

GAZ008-009-220315-
/O.CON.KFFC.FZ.W.0012.181022T0400Z-181022T1200Z/
Union-Towns-
301 PM EDT Sun Oct 21 2018

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM
EDT MONDAY...

* Temperatures...Around 30.

* Locations...Far northeast Georgia including Towns and Union 
  counties.

* Timing...After midnight tonight through 8 AM Monday morning.

* Impacts...Freezing temperatures may damage sensitive vegetation.  
  Take steps to protect plants and pets from the cold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

GAZ001>007-011>016-019>025-027-030>039-041>062-066>076-220315-
/O.NEW.KFFC.FR.Y.0002.181022T0600Z-181022T1200Z/
Dade-Walker-Catoosa-Whitfield-Murray-Fannin-Gilmer-Chattooga-
Gordon-Pickens-Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Forsyth-
Hall-Banks-Jackson-Madison-Polk-Paulding-Cobb-North Fulton-
Gwinnett-Barrow-Clarke-Oconee-Oglethorpe-Wilkes-Haralson-Carroll-
Douglas-South Fulton-DeKalb-Rockdale-Walton-Newton-Morgan-Greene-
Taliaferro-Heard-Coweta-Fayette-Clayton-Spalding-Henry-Butts-
Jasper-Putnam-Hancock-Warren-Troup-Meriwether-Pike-Upson-Lamar-
Monroe-Jones-Baldwin-Washington-Glascock-Jefferson-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Gainesville, Marietta, Atlanta, Lawrenceville, 
Athens, Carrollton, Douglasville, East Point, Decatur, Conyers, 
Covington, Newnan, Peachtree City, Griffin, and Milledgeville
301 PM EDT Sun Oct 21 2018

...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM EDT MONDAY...

The National Weather Service in Peachtree City has issued a Frost
Advisory, which is in effect from 2 AM to 8 AM EDT Monday.

* Temperatures...lower to mid 30s

* Timing...After midnight tonight through 8 AM Monday morning.

* Locations...Much of north and central Georgia north of a
  LaGrange to Macon to Sandersville line.

* Impacts...Any sensitive vegetation could be susceptible to these
  temperatures for any duration.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed or damaged if left 
uncovered.

&&

$$
2 follow-up statements
341 
WWUS72 KFFC 212347
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
747 PM EDT Sun Oct 21 2018


GAZ008-009-221200-
/O.CON.KFFC.FZ.W.0012.181022T0400Z-181022T1200Z/
Union-Towns-
747 PM EDT Sun Oct 21 2018

...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM
EDT MONDAY...

* Temperatures...Around 30.

* Locations...Far northeast Georgia including Towns and Union 
  counties.

* Timing...After midnight tonight through 8 AM Monday morning.

* Impacts...Freezing temperatures may damage sensitive 
  vegetation. Take steps to protect plants and pets from the 
  cold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

GAZ001>007-011>016-019>025-027-030>039-041>062-066>076-221200-
/O.CON.KFFC.FR.Y.0002.181022T0600Z-181022T1200Z/
Dade-Walker-Catoosa-Whitfield-Murray-Fannin-Gilmer-Chattooga-
Gordon-Pickens-Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Forsyth-
Hall-Banks-Jackson-Madison-Polk-Paulding-Cobb-North Fulton-
Gwinnett-Barrow-Clarke-Oconee-Oglethorpe-Wilkes-Haralson-Carroll-
Douglas-South Fulton-DeKalb-Rockdale-Walton-Newton-Morgan-Greene-
Taliaferro-Heard-Coweta-Fayette-Clayton-Spalding-Henry-Butts-
Jasper-Putnam-Hancock-Warren-Troup-Meriwether-Pike-Upson-Lamar-
Monroe-Jones-Baldwin-Washington-Glascock-Jefferson-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Gainesville, Marietta, Atlanta, Lawrenceville, 
Athens, Carrollton, Douglasville, East Point, Decatur, Conyers, 
Covington, Newnan, Peachtree City, Griffin, and Milledgeville
747 PM EDT Sun Oct 21 2018

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
MONDAY...

* Temperatures...lower to mid 30s

* Timing...After midnight tonight through 8 AM Monday morning.

* Locations...Much of north and central Georgia north of a 
  LaGrange to Macon to Sandersville line.

* Impacts...Any sensitive vegetation could be susceptible to 
  these temperatures for any duration.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed or damaged if left
uncovered.

&&

$$
661 
WWUS72 KFFC 220758
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
358 AM EDT Mon Oct 22 2018


GAZ008-009-221200-
/O.CON.KFFC.FZ.W.0012.000000T0000Z-181022T1200Z/
Union-Towns-
358 AM EDT Mon Oct 22 2018

...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

* Temperatures...Around 30.

* Locations...Far northeast Georgia including Towns and Union 
  counties.

* Timing...From now through 8 AM this morning.

* Impacts...Freezing temperatures may damage sensitive 
  vegetation. Take steps to protect plants and pets from the 
  cold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Freeze Warning means sub-freezing temperatures are imminent or
highly likely. These conditions will kill crops and other
sensitive vegetation.

&&

$$

GAZ001>007-011>016-019>025-027-030>039-041>062-066>076-221200-
/O.CON.KFFC.FR.Y.0002.000000T0000Z-181022T1200Z/
Dade-Walker-Catoosa-Whitfield-Murray-Fannin-Gilmer-Chattooga-
Gordon-Pickens-Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Forsyth-
Hall-Banks-Jackson-Madison-Polk-Paulding-Cobb-North Fulton-
Gwinnett-Barrow-Clarke-Oconee-Oglethorpe-Wilkes-Haralson-Carroll-
Douglas-South Fulton-DeKalb-Rockdale-Walton-Newton-Morgan-Greene-
Taliaferro-Heard-Coweta-Fayette-Clayton-Spalding-Henry-Butts-
Jasper-Putnam-Hancock-Warren-Troup-Meriwether-Pike-Upson-Lamar-
Monroe-Jones-Baldwin-Washington-Glascock-Jefferson-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Gainesville, Marietta, Atlanta, Lawrenceville, 
Athens, Carrollton, Douglasville, East Point, Decatur, Conyers, 
Covington, Newnan, Peachtree City, Griffin, and Milledgeville
358 AM EDT Mon Oct 22 2018

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING...

* Temperatures...lower to mid 30s

* Timing...From now through 8 AM this morning.

* Locations...Much of north and central Georgia north of a 
  LaGrange to Macon to Sandersville line.

* Impacts...Any sensitive vegetation could be susceptible to 
  these temperatures for any duration.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Frost Advisory means that widespread frost is expected.
Sensitive outdoor plants may be killed or damaged if left
uncovered.

&&

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 21, 3:40 AM EDTFreeze WarningFFCTowns, Union28 hr

Nearby

Frost Advisories in Georgia, 2018Every frost advisory in 2018

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.