Alert archive / Georgia / Freeze Warnings in 2017

Freeze Warning 7, NWS Atlanta, GA

November 10, 20175 counties in Georgia

NWS Atlanta, GA issued this freeze warning at Nov 10, 2017, 1:35 PM EST for 5 counties in Georgia. It took effect at Nov 11, 2017, 12:00 AM EST. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Nov 10, 2017, 1:35 PM EST (18:35 UTC)
In effect from
Nov 11, 2017, 12:00 AM EST
Expired
Nov 11, 2017, 6:30 AM EST
In force
7 hr
Issued by
NWS Atlanta, GA

Counties Fannin County, GA, Lumpkin County, GA, Towns County, GA, Union County, GA, White County, GA

The radar

The Greer radar (KGSP), 159 km from the middle of the area, began a volume at 18:33 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 163 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 2017-11-10Temperature 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 2017-11-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 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
1402 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

512 
WWUS72 KFFC 101835
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
135 PM EST Fri Nov 10 2017


GAZ006-008-009-015-016-111400-
/O.NEW.KFFC.FZ.W.0007.171111T0500Z-171111T1400Z/
Fannin-Union-Towns-Lumpkin-White-
Including the cities of Dahlonega and Cleveland
135 PM EST Fri Nov 10 2017

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EST
SATURDAY...

The National Weather Service in Peachtree City has issued a
Freeze Warning, which is in effect from midnight tonight to 9 AM
EST Saturday.

* Locations...Far northeast Georgia mountains, mainly along and
  north of a line from Blue Ridge to Dahlonega to Cleveland.

* Temperatures...low temperatures in the lower 30s.

* Timing...12 to 9 AM.

* Impacts...Impacts from freezing temperatures include damage to
  sensitive vegetation. Take steps to protect plants from the cold. 
  Also take steps to protect pets from the cold temperatures.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$
1 follow-up statement
582 
WWUS72 KFFC 111130
NPWFFC

URGENT - WEATHER MESSAGE
National Weather Service Peachtree City GA
630 AM EST Sat Nov 11 2017


GAZ006-008-009-015-016-111230-
/O.CAN.KFFC.FZ.W.0007.000000T0000Z-171111T1400Z/
Fannin-Union-Towns-Lumpkin-White-
Including the cities of Dahlonega and Cleveland
630 AM EST Sat Nov 11 2017

...FREEZE WARNING IS CANCELLED...

The National Weather Service in Peachtree City has cancelled the
Freeze Warning.

Temperatures are no longer expected to drop below freezing early
this morning.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 10, 1:16 AM ESTDense Fog AdvisoryFFCBaldwin, Bibb, Bleckley, Clarke, Crisp, Dodge and 30 more9 hr

Nearby

Freeze Warnings in Georgia, 2017Every freeze warning in 2017

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.