Alert archive / Georgia / Frost Advisories in 2011

Frost Advisory 1, NWS Atlanta, GA

March 1, 201129 counties in Georgia

NWS Atlanta, GA issued this frost advisory at Mar 1, 2011, 3:58 PM EST for 29 counties in Georgia. It took effect at Mar 2, 2011, 4:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Mar 1, 2011, 3:58 PM EST (20:58 UTC)
In effect from
Mar 2, 2011, 4:00 AM EST
Expired
Mar 2, 2011, 3:51 AM EST
In force
Issued by
NWS Atlanta, GA
All 29 counties

Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Haralson County, GA, Heard County, GA, Lumpkin County, GA, Meriwether County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Spalding County, GA, Towns County, GA, Troup County, GA, Union County, GA, Walker County, GA, White County, GA, Whitfield County, GA

The radar

The Atlanta radar (KFFC), 89 km from the middle of the area, began a volume at 20:56 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, 9.0 hours before the alert went out and 90 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 2011-03-01Temperature 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 2011-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1358 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
30 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.

958 
WWUS72 KFFC 012058
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
358 PM EST TUE MAR 1 2011

...PATCHY FROST EXPECTED ACROSS PARTS OF NORTH AND WEST CENTRAL
GEORGIA LATE TONIGHT AND EARLY WEDNESDAY...

CANADIAN HIGH PRESSURE WAS SPREADING ACROSS THE EASTERN U.S. IN
THE WAKE OF THE STRONG STORM SYSTEM THAT MOVED THROUGH THE AREA
MONDAY. TEMPERATURES WILL DROP INTO THE MID 30S IN RURAL
AREAS...MOUNTAIN VALLEYS...AND SHELTERED...PROTECTED AREAS TONIGHT.
GIVEN THAT TEMPERATURES HAVE BEEN UNSEASONABLY WARM FOR THE LAST
TWO TO THREE WEEKS AND MANY AREAS HAVE NOT EVEN SEEN A FREEZE OR
FROST SINCE MID-FEBRUARY...MANY PLANTS...TREES...AND SHRUBS HAVE
STARTED TO BUD PREMATURELY AND WILL BE SUSCEPTIBLE TO FROST.
FREEZING TEMPERATURES ARE NOT EXPECTED TONIGHT.

GAZ001>009-011>016-019-020-030-031-041>043-052>054-056-066>068-
021400-
/O.NEW.KFFC.FR.Y.0001.110302T0900Z-110302T1400Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-POLK-
PAULDING-HARALSON-CARROLL-DOUGLAS-HEARD-COWETA-FAYETTE-SPALDING-
TROUP-MERIWETHER-PIKE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...CARROLLTON...DOUGLASVILLE...NEWNAN...
PEACHTREE CITY...GRIFFIN
358 PM EST TUE MAR 1 2011

...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM EST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 9 AM EST WEDNESDAY. 

* TIMING:  FROM 4 AM TO 9 AM EST WEDNESDAY MORNING.

* TEMPERATURE: FROM 34 TO 36 DEGREES FAHRENHEIT.

* IMPACTS: PREMATURELY BUDDING PLANTS...SHRUBS...AND TREES WILL BE
  SUSCEPTIBLE TO THESE COLD TEMPERATURES AND MAY SUFFER FROST
  DAMAGE AND COULD BE KILLED IF LEFT UNPROTECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED. INDOOR PLANTS SHOULD BE
BROUGHT INDOORS TONIGHT.

&&

$$

19
1 follow-up statement
819 
WWUS72 KFFC 020851
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
351 AM EST WED MAR 2 2011


GAZ001>009-011>016-019-020-030-031-041>043-052>054-056-066>068-
021000-
/O.CAN.KFFC.FR.Y.0001.110302T0900Z-110302T1400Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-POLK-
PAULDING-HARALSON-CARROLL-DOUGLAS-HEARD-COWETA-FAYETTE-SPALDING-
TROUP-MERIWETHER-PIKE-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE...CARROLLTON...DOUGLASVILLE...NEWNAN...
PEACHTREE CITY...GRIFFIN
351 AM EST WED MAR 2 2011

...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS CANCELLED THE
FROST ADVISORY. 

GENERALLY ONLY PATCHY FROST IS EXPECTED THIS MORNING.


$$

Nearby

Frost Advisories in Georgia, 2011Every frost advisory in 2011

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.