Alert archive / Georgia / Frost Advisories in 2020

Frost Advisory 2, NWS Atlanta, GA

May 9, 202025 counties in Georgia

NWS Atlanta, GA issued this frost advisory at May 9, 2020, 3:37 AM EDT for 25 counties in Georgia. It took effect at May 10, 2020, 2:00 AM EDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
May 9, 2020, 3:37 AM EDT (07:37 UTC)
In effect from
May 10, 2020, 2:00 AM EDT
Expired
May 10, 2020, 8:00 AM EDT
In force
6 hr
Issued by
NWS Atlanta, GA
All 25 counties

Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Cobb County, GA, Dade County, GA, Dawson County, GA, Douglas County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Haralson County, GA, Heard County, GA, Lumpkin County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA

The radar

The Atlanta radar (KFFC), 114 km from the middle of the area, began a volume at 07:39 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 00:00Z, 7.6 hours before the alert went out and 114 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 00:00Z on 2020-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2020-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 356 square meters per square second.1939587897117Sfc1 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
7 J/kg
Mixed-layer CIN
-254 J/kg
Mixed-layer LCL
973 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
356 m²/s²
0-3 km storm-relative helicity
383 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

928 
WWUS72 KFFC 090737
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
337 AM EDT Sat May 9 2020

GAZ006>009-092000-
/O.NEW.KFFC.FR.Y.0002.200510T0600Z-200510T1400Z/
/O.CON.KFFC.FZ.W.0001.000000T0000Z-200509T1300Z/
Fannin-Gilmer-Union-Towns-
337 AM EDT Sat May 9 2020

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT SUNDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low
  as 32. For the Frost Advisory, temperatures as low as 35 will 
  result in frost formation.

* WHERE...Fannin, Gilmer, Union and Towns Counties.

* WHEN...For the Freeze Warning, until 9 AM EDT this morning. 
  For the Frost Advisory, from 2 AM to 10 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

GAZ001>005-011>016-019>021-030>032-041>043-052-092000-
/O.NEW.KFFC.FR.Y.0002.200510T0600Z-200510T1400Z/
Dade-Walker-Catoosa-Whitfield-Murray-Chattooga-Gordon-Pickens-
Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Polk-Paulding-Cobb-
Haralson-Carroll-Douglas-Heard-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Marietta, Carrollton, and Douglasville
337 AM EDT Sat May 9 2020

...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT SUNDAY...

* WHAT...Temperatures as low as 37 will result in frost 
  formation.

* WHERE...Portions of north central, northeast, northwest and 
  west central Georgia.

* WHEN...From 2 AM to 10 AM EDT Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
5 follow-up statements
438 
WWUS72 KFFC 091307
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
907 AM EDT Sat May 9 2020

GAZ006>009-100000-
/O.EXP.KFFC.FZ.W.0001.000000T0000Z-200509T1300Z/
/O.CON.KFFC.FR.Y.0002.200510T0600Z-200510T1400Z/
Fannin-Gilmer-Union-Towns-
907 AM EDT Sat May 9 2020

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
SUNDAY...

...FREEZE WARNING HAS EXPIRED...

* WHAT...Temperatures as low as 35 will result in frost 
  formation.

* WHERE...Fannin, Gilmer, Union and Towns Counties.

* WHEN...Freeze Warning expired at 9 AM EDT this morning. For the
  Frost Advisory, from 2 AM to 10 AM EDT Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

GAZ001>005-011>016-019>021-030>032-041>043-052-100000-
/O.CON.KFFC.FR.Y.0002.200510T0600Z-200510T1400Z/
Dade-Walker-Catoosa-Whitfield-Murray-Chattooga-Gordon-Pickens-
Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Polk-Paulding-Cobb-
Haralson-Carroll-Douglas-Heard-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Marietta, Carrollton, and Douglasville
907 AM EDT Sat May 9 2020

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
SUNDAY...

* WHAT...Temperatures as low as 36 will result in frost 
  formation.

* WHERE...Portions of north central, northeast, northwest and 
  west central Georgia.

* WHEN...From 2 AM to 10 AM EDT Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
692 
WWUS72 KFFC 091849 
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
249 PM EDT Sat May 9 2020

GAZ006-008-009-101200-
/O.NEW.KFFC.FZ.W.0002.200510T0800Z-200510T1200Z/
/O.EXT.KFFC.FR.Y.0002.200510T0600Z-200510T0800Z/
Fannin-Union-Towns-
249 PM EDT Sat May 9 2020

...FROST ADVISORY NOW IN EFFECT FROM 2 AM TO 4 AM EDT SUNDAY...
...FREEZE WARNING IN EFFECT FROM 4 AM TO 8 AM EDT SUNDAY...

* WHAT...For the Freeze Warning, temperatures as low as 30 to 32
  degrees can be expected for some areas. For the Frost Advisory,
  areas of frost can be expected.

* WHERE...Fannin, Union and Towns Counties.

* WHEN...For the Freeze Warning, from 4 AM to 8 AM EDT Sunday. 
  For the Frost Advisory, from 2 AM to 4 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

GAZ001>005-007-011>016-019>021-030>032-041>043-052-101200-
/O.EXT.KFFC.FR.Y.0002.200510T0600Z-200510T1200Z/
Dade-Walker-Catoosa-Whitfield-Murray-Gilmer-Chattooga-Gordon-
Pickens-Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Polk-Paulding-
Cobb-Haralson-Carroll-Douglas-Heard-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Marietta, Carrollton, and Douglasville
249 PM EDT Sat May 9 2020

...FROST ADVISORY NOW IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY...

* WHAT...Temperatures as low as 35 degrees will result in frost 
  formation for some areas.

* WHERE...Portions of north and west Georgia.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
659 
WWUS72 KFFC 092228
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
628 PM EDT Sat May 9 2020

GAZ006-008-009-100630-
/O.CAN.KFFC.FR.Y.0002.200510T0600Z-200510T0800Z/
/O.EXT.KFFC.FZ.W.0002.200510T0600Z-200510T1200Z/
Fannin-Union-Towns-
628 PM EDT Sat May 9 2020

...FREEZE WARNING NOW IN EFFECT FROM 2 AM TO 8 AM EDT SUNDAY...

* WHAT...Sub-freezing temperatures as low as 30 degrees expected.

* WHERE...Fannin, Union and Towns Counties.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions damage crops, fruit
  trees, berries and other sensitive vegetation and possibly 
  damage unprotected outdoor plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

GAZ001>005-007-011>016-019>021-030>032-041>043-052-100630-
/O.CON.KFFC.FR.Y.0002.200510T0600Z-200510T1200Z/
Dade-Walker-Catoosa-Whitfield-Murray-Gilmer-Chattooga-Gordon-
Pickens-Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Polk-Paulding-
Cobb-Haralson-Carroll-Douglas-Heard-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Marietta, Carrollton, and Douglasville
628 PM EDT Sat May 9 2020

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

* WHAT...Temperatures as low as 35 degrees will result in frost 
  formation.

* WHERE...Much of north and west Georgia generally north of a
  LaGrange to Canton to Cleveland line.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost could damage sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
516 
WWUS72 KFFC 092229
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
629 PM EDT Sat May 9 2020

GAZ006-008-009-100630-
/O.CON.KFFC.FZ.W.0002.200510T0600Z-200510T1200Z/
Fannin-Union-Towns-
629 PM EDT Sat May 9 2020

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM EDT
SUNDAY...

* WHAT...Sub-freezing temperatures as low as 30 degrees expected.

* WHERE...Fannin, Union and Towns Counties.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions damage crops, fruit 
  trees, berries and other sensitive vegetation and possibly 
  damage unprotected outdoor plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

GAZ001>005-007-011>016-019>021-030>032-041>043-052-100630-
/O.CON.KFFC.FR.Y.0002.200510T0600Z-200510T1200Z/
Dade-Walker-Catoosa-Whitfield-Murray-Gilmer-Chattooga-Gordon-
Pickens-Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Polk-Paulding-
Cobb-Haralson-Carroll-Douglas-Heard-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Marietta, Carrollton, and Douglasville
629 PM EDT Sat May 9 2020

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

* WHAT...Temperatures as low as 35 degrees will result in frost 
  formation.

* WHERE...Much of north and west Georgia generally north of a 
  LaGrange to Canton to Cleveland line.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost could damage sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
649 
WWUS72 KFFC 100811
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
411 AM EDT Sun May 10 2020

GAZ006-008-009-101200-
/O.CON.KFFC.FZ.W.0002.000000T0000Z-200510T1200Z/
Fannin-Union-Towns-
411 AM EDT Sun May 10 2020

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

* WHAT...Sub-freezing temperatures as low as 30 degrees expected.

* WHERE...Fannin, Union and Towns Counties.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost and freeze conditions damage crops, fruit 
  trees, berries and other sensitive vegetation and possibly 
  damage unprotected outdoor plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

GAZ001>005-007-011>016-019>021-030>032-041>043-052-101200-
/O.CON.KFFC.FR.Y.0002.000000T0000Z-200510T1200Z/
Dade-Walker-Catoosa-Whitfield-Murray-Gilmer-Chattooga-Gordon-
Pickens-Dawson-Lumpkin-White-Floyd-Bartow-Cherokee-Polk-Paulding-
Cobb-Haralson-Carroll-Douglas-Heard-
Including the cities of Calhoun, Dahlonega, Cleveland, Rome, 
Cartersville, Marietta, Carrollton, and Douglasville
411 AM EDT Sun May 10 2020

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

* WHAT...Temperatures as low as 35 degrees will result in frost 
  formation.

* WHERE...Much of north and west Georgia generally north of a 
  LaGrange to Canton to Cleveland line.

* WHEN...From 2 AM to 8 AM EDT Sunday.

* IMPACTS...Frost could damage sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 2:49 PM EDTFreeze WarningFFCFannin, Towns, Union17 hr

Nearby

Frost Advisories in Georgia, 2020Every frost advisory in 2020

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.