Alert archive / Georgia / Special Weather Statements in 2011

Special Weather Statement, NWS Atlanta, GA

September 21, 2011Jones County, Georgia

NWS Atlanta, GA issued this special weather statement at Sep 21, 2011, 9:21 AM EDT for Jones County, Georgia. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 21, 2011, 9:21 AM EDT (13:21 UTC)
Expired
Sep 21, 2011, 10:15 AM EDT
In force
54 min
Issued by
NWS Atlanta, GA

County Jones County, GA

The radar

The Robins AFB radar (KJGX), 39 km from the middle of the area, began a volume at 13:22 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, 1.4 hours before the alert went out and 96 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 2011-09-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 452 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 12:00Z on 2011-09-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
452 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
503 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

511 
WWUS82 KFFC 211321
SPSFFC

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
921 AM EDT WED SEP 21 2011

GAZ072-211415-
921 AM EDT WED SEP 21 2011

...SIGNIFICANT WEATHER ADVISORY FOR HEAVY RAIN IN JONES COUNTY UNTIL
1015 AM EDT...

AT 913 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A  
THUNDERSTORM WITH HEAVY RAIN 7 MILES SOUTH OF JARRELL PLANTATION... 
MOVING NORTHEAST AT 20 MPH. SINCE  500 AM EDT TWO TO FOUR INCHES OF 
RAIN HAS OCCURRED WITH AN ISOLATED SIX INCHES OVER CEDAR CREEK IN 
THE CEDAR CREEK WILDLIFE MANAGEMENT AREA IN NORTH CENTRAL JONES 
COUNTY.

RUNOFF FROM THESE STORMS WILL CAUSE MINOR FLOODING OF SMALL CREEKS 
AND STREAMS...AND ROADS ACROSS JONES COUNTY...INCLUDING AREAS AROUND 
JARRELL PLANTATION...POSTELL...WAYSIDE...CLINTON...BRADLEY...ROUND 
OAK...GRAY...JAMES...GREENBERRY CROSSROADS...HADDOCK...BLOUNTSVILLE 
AND ETHRIDGE. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE 
BANKS OF CREEKS AND STREAMS ARE SUBJECT TO MINOR FLOODING.

&&

LAT...LON 3289 8360 3289 8365 3290 8367 3298 8372
      3300 8372 3305 8374 3317 8355 3318 8343
      3295 8337 3287 8355 3288 8357 3287 8358
TIME...MOT...LOC 1317Z 240DEG 16KT 3296 8367

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 20, 8:35 PM EDTSpecial Weather StatementFFCHarris, Heard, Troup40 min
Sep 20, 9:22 PM EDTSpecial Weather StatementFFCHarris, Troup38 min
Sep 20, 9:31 PM EDTSpecial Weather StatementFFCGlascock, Hancock44 min
Sep 20, 9:52 PM EDTSpecial Weather StatementFFCHarris, Troup23 min
Sep 20, 10:09 PM EDTSpecial Weather StatementFFCHarris66 min
Sep 20, 11:47 PM EDTSpecial Weather StatementFFCHarris, Muscogee, Talbot58 min
Sep 21, 12:49 AM EDTSpecial Weather StatementFFCHarris, Muscogee, Talbot56 min
Sep 21, 4:28 AM EDTSpecial Weather StatementFFCMeriwether62 min
Sep 21, 6:23 AM EDTSpecial Weather StatementFFCJones, Putnam52 min
Sep 21, 7:13 AM EDTSpecial Weather StatementFFCPutnam62 min
Sep 21, 8:26 AM EDTSpecial Weather StatementFFCJones, Putnam49 min
Sep 21, 3:05 PM EDTSpecial Weather StatementFFCMontgomery, Toombs40 min
Sep 21, 4:36 PM EDTSpecial Weather StatementFFCTreutlen39 min
Sep 21, 5:57 PM EDTSpecial Weather StatementFFCLaurens33 min
Sep 21, 6:26 PM EDTSpecial Weather StatementFFCDodge, Laurens49 min
Sep 21, 7:27 PM EDTSpecial Weather StatementFFCWashington48 min

Nearby

Special Weather Statements in Georgia, 2011Every special weather statement 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.