Alert archive / Georgia / Frost Advisories in 2021

Frost Advisory 6, NWS Atlanta, GA

November 5, 2021Fannin County, Towns County, Union County, Georgia

NWS Atlanta, GA issued this frost advisory at Nov 5, 2021, 2:34 PM EDT for Fannin County, Towns County, Union County, Georgia. It took effect at Nov 6, 2021, 5:00 AM EDT. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Nov 5, 2021, 2:34 PM EDT (18:34 UTC)
In effect from
Nov 6, 2021, 5:00 AM EDT
Expired
Nov 6, 2021, 9:00 AM EDT
In force
4 hr
Issued by
NWS Atlanta, GA

Counties Fannin County, GA, Towns County, GA, Union County, GA

The radar

The Knoxville radar (KMRX), 155 km from the middle of the area, began a volume at 18:36 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, 6.6 hours before the alert went out and 173 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 2021-11-05Temperature 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 2021-11-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
744 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
95 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

380 
WWUS72 KFFC 051834
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
234 PM EDT Fri Nov 5 2021

GAZ006-008-009-060245-
/O.UPG.KFFC.FZ.A.0004.211106T0900Z-211106T1300Z/
/O.NEW.KFFC.FR.Y.0006.211106T0900Z-211106T1300Z/
Fannin-Union-Towns-
234 PM EDT Fri Nov 5 2021

...FROST ADVISORY IN EFFECT FROM 5 AM TO 9 AM EDT SATURDAY...

* WHAT...Temperatures as low as 33 will result in frost 
  formation.

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

* WHEN...From 5 AM to 9 AM EDT Saturday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
2 follow-up statements
843 
WWUS72 KFFC 060814
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
414 AM EDT Sat Nov 6 2021

GAZ006-008-009-061830-
/O.NEW.KFFC.FZ.A.0005.211107T0900Z-211107T1300Z/
/O.CON.KFFC.FR.Y.0006.211106T0900Z-211106T1300Z/
Fannin-Union-Towns-
414 AM EDT Sat Nov 6 2021

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY
MORNING...

* WHAT...Temperatures as low as 33 will result in frost formation
  this morning. Subfreezing temperatures as low as 30 degrees are
  possible Sunday morning.

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

* WHEN...Frost Advisory from 5 AM to 9 AM EDT Saturday. Freeze
  Watch from 5 AM to 9 AM Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered this morning. Frost and freeze conditions could kill
  crops and other sensitive vegetation Sunday morning.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.

&&

$$
692 
WWUS72 KFFC 061021
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
621 AM EDT Sat Nov 6 2021

GAZ006-061830-
/O.NEW.KFFC.FG.Y.0014.211106T1021Z-211106T1400Z/
/O.CON.KFFC.FR.Y.0006.000000T0000Z-211106T1300Z/
/O.CON.KFFC.FZ.A.0005.211107T0900Z-211107T1300Z/
Fannin-
621 AM EDT Sat Nov 6 2021

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...
...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY MORNING...

* WHAT...For the Frost Advisory, temperatures as low as 33 will
  result in frost formation. For the Dense Fog Advisory,
  visibility of a quarter of a mile or less in dense fog. For the
  Freeze Watch, subfreezing temperatures as low as 30 possible.

* WHERE...Fannin County.

* WHEN...For the Frost Advisory, until 9 AM EDT this morning. 
  For the Dense Fog Advisory, until 10 AM EDT this morning. For 
  the Freeze Watch, from late tonight through Sunday morning.

* IMPACTS...Frost and freeze conditions could kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing. Hazardous driving conditions due to low visibility.

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.

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.

&&

$$

GAZ001>005-007-011-012-019-020-061400-
/O.NEW.KFFC.FG.Y.0014.211106T1021Z-211106T1400Z/
Dade-Walker-Catoosa-Whitfield-Murray-Gilmer-Chattooga-Gordon-
Floyd-Bartow-
Including the cities of Calhoun, Rome, and Cartersville
621 AM EDT Sat Nov 6 2021

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

* WHAT...Visibility a quarter of a mile or less in dense fog.

* WHERE...Dade, Walker, Catoosa, Whitfield, Murray, Gilmer, 
  Chattooga, Gordon, Floyd and Bartow Counties.

* WHEN...Until 10 AM EDT this morning.

* IMPACTS...Hazardous driving conditions due to low visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.

&&

$$

GAZ008-009-061830-
/O.CON.KFFC.FR.Y.0006.000000T0000Z-211106T1300Z/
/O.CON.KFFC.FZ.A.0005.211107T0900Z-211107T1300Z/
Union-Towns-
621 AM EDT Sat Nov 6 2021

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY MORNING...

* WHAT...Temperatures as low as 33 will result in frost 
  formation this morning. Subfreezing temperatures as low as 30 
  degrees are possible Sunday morning.

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

* WHEN...Frost Advisory from 5 AM to 9 AM EDT Saturday. Freeze 
  Watch from 5 AM to 9 AM Sunday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered this morning. Frost and freeze conditions could 
  kill crops and other sensitive vegetation Sunday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

A Freeze Watch means sub-freezing temperatures are possible.
These conditions could kill crops and other sensitive vegetation.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 5, 3:43 AM EDTFreeze WatchFFCFannin, Towns, Union11 hr

Nearby

Frost Advisories in Georgia, 2021Every frost advisory in 2021

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.