Alert archive / Georgia / Wind Advisories in 2011

Wind Advisory 19, NWS Atlanta, GA

September 5, 201113 counties in Georgia

NWS Atlanta, GA issued this wind advisory at Sep 5, 2011, 9:24 PM EDT for 13 counties in Georgia. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Sep 5, 2011, 9:24 PM EDT (01:24 UTC)
Expired
Sep 6, 2011, 9:19 AM EDT
In force
12 hr
Issued by
NWS Atlanta, GA

Counties Bartow County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Dade County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Pickens County, GA, Walker County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 114 km from the middle of the area, began a volume at 01:27 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, 1.4 hours before the alert went out and 142 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 2011-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1175 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 2011-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 462 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
1175 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
554 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
462 m²/s²
0-3 km storm-relative helicity
542 m²/s²
Significant tornado parameter
3.6
Supercell composite
19.8

Open this sounding in Storm Lab

The text

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

183 
WWUS72 KFFC 060124
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
924 PM EDT MON SEP 5 2011

GAZ001>007-011>013-019>021-061200-
/O.NEW.KFFC.WI.Y.0019.110906T0124Z-110906T1200Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-CHATTOOGA-
GORDON-PICKENS-FLOYD-BARTOW-CHEROKEE-
INCLUDING THE CITIES OF...CALHOUN...ROME...CARTERSVILLE
924 PM EDT MON SEP 5 2011

...WIND ADVISORY IN EFFECT UNTIL 8 AM EDT TUESDAY...

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 8 AM EDT TUESDAY. 

* WINDS...NORTHEAST 20 MPH WITH GUSTS UP TO 30 MPH.

* TIMING...WINDS ARE ONGOING AND SHOULD PERSIST THROUGH EARLY TUESDAY.

* IMPACTS...ABUNDANT RAINFALL ALONG WITH THE WINDS FROM THE REMNANTS
  OF LEE WILL ALLOW FOR NUMEROUS TREES TO FALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WIND SPEEDS OF AT LEAST
20 MPH...OR GUSTS TO 35 MPH OR STRONGER ARE
EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...
ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$
2 follow-up statements
779 
WWUS72 KFFC 060819
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
419 AM EDT TUE SEP 6 2011

GAZ001>007-011>013-019>021-061500-
/O.EXT.KFFC.WI.Y.0019.000000T0000Z-110906T1500Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-CHATTOOGA-
GORDON-PICKENS-FLOYD-BARTOW-CHEROKEE-
INCLUDING THE CITIES OF...CALHOUN...ROME...CARTERSVILLE
419 AM EDT TUE SEP 6 2011

...WIND ADVISORY NOW IN EFFECT UNTIL 11 AM EDT THIS MORNING...

* WINDS...NORTH 15 TO 20 MPH WITH GUSTS UP TO 30 MPH.

* TIMING...WINDS ARE ONGOING AND SHOULD PERSIST THROUGH THIS
  MORNING.

* IMPACTS...ABUNDANT RAINFALL ALONG WITH THE WINDS FROM THE 
  REMNANTS OF LEE WILL ALLOW FOR NUMEROUS TREES TO FALL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT SUSTAINED WIND SPEEDS OF AT LEAST
20 MPH...OR GUSTS TO 35 MPH OR STRONGER ARE EXPECTED. WINDS THIS
STRONG CAN MAKE DRIVING DIFFICULT... ESPECIALLY FOR HIGH PROFILE
VEHICLES. USE EXTRA CAUTION.

&&

$$
144 
WWUS72 KFFC 061319
NPWFFC

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
919 AM EDT TUE SEP 6 2011

...WIND ADVISORY HAS BEEN CANCELLED FOR NORTHWEST GEORGIA...

GAZ001>007-011>013-019>021-061430-
/O.CAN.KFFC.WI.Y.0019.000000T0000Z-110906T1500Z/
DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-CHATTOOGA-
GORDON-PICKENS-FLOYD-BARTOW-CHEROKEE-
INCLUDING THE CITIES OF...CALHOUN...ROME...CARTERSVILLE
919 AM EDT TUE SEP 6 2011

...WIND ADVISORY IS CANCELLED...

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

WIND SPEEDS WILL REMAIN IN THE 5 TO 15 MPH RANGE WITH A FEW GUSTS
TO NEAR 20 MPH LATER TODAY. THEREFORE THE WIND ADVISORY HAS BEEN CANCELLED.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 5, 8:44 PM EDTAreal Flood WarningFFCCatoosa, Dade, Walker12 hr
Sep 5, 9:12 PM EDTSpecial Weather StatementFFCHall48 min
Sep 5, 9:44 PM EDTRiver Flood WarningFFCCatoosa58 hr
Sep 6, 5:02 AM EDTRiver Flood WarningFFCWhitfield63 hr
Sep 6, 4:40 PM EDTRiver Flood WarningFFCMurray, Whitfield16 hr

Nearby

Wind Advisories in Georgia, 2011Every wind 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.