Alert archive / Georgia / Frost Advisories in 2015

Frost Advisory 1, NWS Atlanta, GA

April 4, 201519 counties in Georgia

NWS Atlanta, GA issued this frost advisory at Apr 4, 2015, 2:31 PM EDT for 19 counties in Georgia. It took effect at Apr 5, 2015, 4:00 AM EDT. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Apr 4, 2015, 2:31 PM EDT (18:31 UTC)
In effect from
Apr 5, 2015, 4:00 AM EDT
Expired
Apr 5, 2015, 9:00 AM EDT
In force
5 hr
Issued by
NWS Atlanta, GA

Counties Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee 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, Polk 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 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, 6.5 hours before the alert went out and 137 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 2015-04-04Temperature 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 2015-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -105 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
757 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
-105 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

312 
WWUS72 KFFC 041831
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
231 PM EDT SAT APR 4 2015

GAZ001>009-011>016-019>021-030-050245-
/O.NEW.KFFC.FR.Y.0001.150405T0800Z-150405T1300Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-POLK-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE
231 PM EDT SAT APR 4 2015

...FROST ADVISORY IN EFFECT FROM 4 AM TO 9 AM EDT SUNDAY...

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

* LOCATIONS...EXTREME NORTH GEORGIA NORTH OF A LINE FROM CEDARTOWN
  TO CLEVELAND.

* TEMPERATURES...FALLING INTO THE MID 30S LATE TONIGHT.

* TIMING...LATE TONIGHT AND EARLY SUNDAY MORNING.

* IMPACTS...FROST COULD DAMAGE NEW AND TENDER VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
2 follow-up statements
116 
WWUS72 KFFC 050203
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1003 PM EDT SAT APR 4 2015


GAZ001>009-011>016-019>021-030-051015-
/O.CON.KFFC.FR.Y.0001.150405T0800Z-150405T1300Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-POLK-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE
1003 PM EDT SAT APR 4 2015

...FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 9 AM EDT
SUNDAY...

* LOCATIONS...EXTREME NORTH GEORGIA NORTH OF A LINE FROM 
  CEDARTOWN TO CLEVELAND.

* TEMPERATURES...FALLING INTO THE MID 30S LATE TONIGHT.

* TIMING...LATE TONIGHT AND EARLY SUNDAY MORNING.

* IMPACTS...FROST COULD DAMAGE NEW AND TENDER VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
425 
WWUS72 KFFC 050804
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
404 AM EDT SUN APR 5 2015

GAZ001>009-011>016-019>021-030-051300-
/O.CON.KFFC.FR.Y.0001.000000T0000Z-150405T1300Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-
CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-
CHEROKEE-POLK-
INCLUDING THE CITIES OF...CALHOUN...DAHLONEGA...CLEVELAND...
ROME...CARTERSVILLE
404 AM EDT SUN APR 5 2015

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...

* LOCATIONS...EXTREME NORTH GEORGIA NORTH OF A LINE FROM 
  CEDARTOWN TO CLEVELAND.

* TEMPERATURES...FALLING INTO THE MID 30S THIS MORNING. 

* TIMING...EARLY THIS MORNING.

* IMPACTS...FROST COULD DAMAGE NEW AND TENDER VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 9:34 PM EDTSevere Thunderstorm WarningFFCDade41 min
Apr 3, 9:47 PM EDTSpecial Weather StatementFFCCatoosa28 min
Apr 3, 10:13 PM EDTTornado WarningFFCChattooga, Dade, Walker36 min
Apr 3, 10:38 PM EDTSevere Thunderstorm WarningFFCChattooga, Walker22 min
Apr 3, 10:43 PM EDTSpecial Weather StatementFFCGordon32 min
Apr 3, 10:52 PM EDTSevere Thunderstorm WarningFFCFloyd38 min
Apr 3, 11:04 PM EDTSpecial Weather StatementFFCGordon26 min
Apr 3, 11:25 PM EDTSpecial Weather StatementFFCBartow35 min
Apr 3, 11:58 PM EDTSpecial Weather StatementFFCCobb32 min
Apr 4, 12:26 AM EDTSpecial Weather StatementFFCCobb34 min
Apr 4, 12:42 AM EDTSpecial Weather StatementFFCCarroll33 min
Apr 4, 1:13 AM EDTSpecial Weather StatementFFCCarroll32 min

Nearby

Frost Advisories in Georgia, 2015Every frost advisory in 2015

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.