Alert archive / Georgia / Freeze Watches in 2012

Freeze Watch 2, NWS Atlanta, GA

March 9, 201216 counties in Georgia

NWS Atlanta, GA issued this freeze watch at Mar 9, 2012, 3:46 AM EST for 16 counties in Georgia. It took effect at Mar 10, 2012, 2:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Mar 9, 2012, 3:46 AM EST (08:46 UTC)
In effect from
Mar 10, 2012, 2:00 AM EST
Expired
Mar 9, 2012, 2:28 PM EST
In force
Issued by
NWS Atlanta, GA

Counties Catoosa County, GA, Chattooga County, GA, Dade County, GA, Dawson County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Lumpkin County, GA, Murray County, GA, Pickens County, GA, Towns County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 136 km from the middle of the area, began a volume at 08:49 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, 8.8 hours before the alert went out and 145 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 2012-03-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 2012-03-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.19395878Sfc1 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
5 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1708 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
193 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.

592 
WWUS72 KFFC 090846
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
346 AM EST FRI MAR 9 2012

GAZ001>009-011>016-019-091700-
/O.NEW.KFFC.FZ.A.0002.120310T0700Z-120310T1300Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...ROME
346 AM EST FRI MAR 9 2012

...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY
MORNING...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
FREEZE WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING.

* LOCATIONS...THE NORTH GEORGIA MOUNTAINS.

* TEMPERATURES...IN THE LOWER 30S.

* TIMING...AFTER MIDNIGHT SATURDAY MORNING THROUGH SUNRISE.

* IMPACTS...FREEZING TEMPERATURES MAY THREATEN OR KILL TENDER
  SPRING GROWTH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS CONDITIONS ARE FAVORABLE FOR A FREEZE EVENT
IN AND CLOSE TO THE WATCH AREA. THOSE WITH AGRICULTURAL INTERESTS
IN THE WATCH AREA SHOULD MAKE PREPARATIONS TO PROTECT SENSITIVE
VEGETATION AND YOUNG TREES.

&&

$$
2 follow-up statements
807 
WWUS72 KFFC 091522
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1022 AM EST FRI MAR 9 2012

GAZ001>009-011>016-019-092330-
/O.CON.KFFC.FZ.A.0002.120310T0700Z-120310T1300Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...ROME
1022 AM EST FRI MAR 9 2012

...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SATURDAY MORNING...

* LOCATIONS...THE NORTH GEORGIA MOUNTAINS.

* TEMPERATURES...IN THE LOWER 30S.

* TIMING...AFTER MIDNIGHT SATURDAY MORNING THROUGH SUNRISE.

* IMPACTS...FREEZING TEMPERATURES MAY THREATEN OR KILL TENDER 
  SPRING GROWTH. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WATCH MEANS CONDITIONS ARE FAVORABLE FOR A FREEZE EVENT
IN AND CLOSE TO THE WATCH AREA. THOSE WITH AGRICULTURAL INTERESTS
IN THE WATCH AREA SHOULD MAKE PREPARATIONS TO PROTECT SENSITIVE
VEGETATION AND YOUNG TREES.

&&

$$
388 
WWUS72 KFFC 091928
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
228 PM EST FRI MAR 9 2012

GAZ001>009-011>016-019-100330-
/O.UPG.KFFC.FZ.A.0002.120310T0700Z-120310T1300Z/
/O.NEW.KFFC.FZ.W.0003.120310T0700Z-120310T1300Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...ROME
228 PM EST FRI MAR 9 2012

...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM EST SATURDAY...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
FREEZE WARNING...WHICH IS IN EFFECT FROM 2 AM TO 8 AM EST
SATURDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT.

* LOCATIONS...THE NORTH GEORGIA MOUNTAINS.

* TEMPERATURES...IN THE LOW 30S.

* TIMING...AFTER MIDNIGHT THROUGH SUNRISE SATURDAY MORNING.

* IMPACTS...FREEZING TEMPERATURES MAY THREATEN OR KILL TENDER 
  SPRING GROWTH. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS FREEZING TEMPERATURES ARE FORECAST TO
THREATEN OUTDOOR PLANTS. THOSE WITH AGRICULTURAL
INTERESTS IN THE WARNED AREA ARE ADVISED TO HARVEST OR PROTECT
TENDER VEGETATION.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 8, 7:53 PM ESTSpecial Weather StatementFFCCatoosa, Dade, Walker37 min
Mar 8, 8:29 PM ESTSpecial Weather StatementFFCCatoosa, Dade, Walker, Whitfield46 min
Mar 9, 2:28 PM ESTFreeze WarningFFCCatoosa, Chattooga, Dade, Dawson, Fannin, Floyd and 10 more18 hr

Nearby

Freeze Watches in Georgia, 2012Every freeze watch 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.