Alert archive / Georgia / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 263, NWS Atlanta, GA

October 9, 2014Dawson County, Forsyth County, Hall County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Oct 9, 2014, 5:01 PM EDT for Dawson County, Forsyth County, Hall County, Georgia. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Oct 9, 2014, 5:01 PM EDT (21:01 UTC)
Expired: Oct 9, 2014, 5:45 PM EDT
In force: 44 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Dawson County, GA, Forsyth County, GA, Hall County, GA

The radar

The Atlanta radar (KFFC), 107 km from the middle of the area, began a volume at 21:03 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.

What was reported inside it

Time	Report	Where	Remark
Oct 9, 5:10 PM EDT	HAIL 0.75	Cumming, GA	EMERGENCY MANAGER REPORTS DIME SIZE HAIL NEAR THE INTERSECTION OF HIGHWAY 306 AND LELAND DRIVE NORTHEAST OF CUMMING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.0 hours before the alert went out and 103 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1417 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 879 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

788 
WUUS52 KFFC 092101
SVRFFC
GAC085-117-139-092145-
/O.NEW.KFFC.SV.W.0263.141009T2101Z-141009T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
501 PM EDT THU OCT 9 2014

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DAWSON COUNTY IN NORTH CENTRAL GEORGIA
  FORSYTH COUNTY IN NORTH CENTRAL GEORGIA
  WESTERN HALL COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 545 PM EDT

* AT 458 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED NEAR
  CUMMING...MOVING NORTHEAST AT 10 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  OAKWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6 OR TWEET US YOUR REPORT AT NWSATLANTA.

&&

LAT...LON 3422 8382 3416 8404 3417 8406 3415 8409
      3412 8421 3422 8426 3430 8426 3444 8393
TIME...MOT...LOC 2101Z 247DEG 10KT 3423 8415

$$

2 follow-up statements

741 
WWUS52 KFFC 092115
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
515 PM EDT THU OCT 9 2014

GAC085-117-139-092145-
/O.CON.KFFC.SV.W.0263.000000T0000Z-141009T2145Z/
DAWSON GA-FORSYTH GA-HALL GA-
515 PM EDT THU OCT 9 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR WESTERN HALL...NORTHERN FORSYTH AND SOUTHEASTERN DAWSON
COUNTIES...

AT 513 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR COAL MOUNTAIN..MOVING NORTHEAST AT 10 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SILVER
CITY...LAKE LANIER ISLANDS...LUMPKIN...AQUALAND PARK...OAKWOOD...
OSCARVILLE...CHESTATEE AND WAR HILL PARK

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6 OR TWEET US YOUR REPORT AT NWSATLANTA.

&&

LAT...LON 3416 8409 3418 8416 3424 8422 3432 8420
      3444 8393 3422 8382 3416 8404 3417 8406
TIME...MOT...LOC 2115Z 247DEG 10KT 3425 8411

$$

089 
WWUS52 KFFC 092143
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
543 PM EDT THU OCT 9 2014

GAC085-117-139-092153-
/O.EXP.KFFC.SV.W.0263.000000T0000Z-141009T2145Z/
DAWSON GA-FORSYTH GA-HALL GA-
543 PM EDT THU OCT 9 2014

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN HALL...NORTHERN
FORSYTH AND SOUTHEASTERN DAWSON COUNTIES WILL EXPIRE AT 545 PM EDT...

IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS
PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8
6 6 7 6 3 4 4 6 6 OR TWEET US YOUR REPORT AT NWSATLANTA.

LAT...LON 3416 8409 3418 8416 3424 8422 3432 8420
      3444 8393 3422 8382 3416 8404 3417 8406
TIME...MOT...LOC 2143Z 247DEG 10KT 3428 8402

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 8:14 PM EDT	Special Weather Statement	FFC	Bartow	31 min
Oct 9, 1:28 PM EDT	Special Weather Statement	FFC	Lumpkin	47 min
Oct 9, 1:37 PM EDT	Special Weather Statement	FFC	Clarke, Jackson	38 min
Oct 9, 2:12 PM EDT	Special Weather Statement	FFC	White	33 min
Oct 9, 2:34 PM EDT	Special Weather Statement	FFC	Cobb, Fulton	26 min
Oct 9, 2:36 PM EDT	Severe Thunderstorm Warning	FFC	Cobb, Douglas, Fulton, Paulding	39 min
Oct 9, 3:02 PM EDT	Special Weather Statement	FFC	White	28 min
Oct 9, 3:08 PM EDT	Special Weather Statement	FFC	Catoosa	52 min
Oct 9, 3:27 PM EDT	Special Weather Statement	FFC	Whitfield	33 min
Oct 9, 3:33 PM EDT	Special Weather Statement	FFC	Murray	42 min
Oct 9, 3:37 PM EDT	Special Weather Statement	FFC	Banks	38 min
Oct 9, 3:39 PM EDT	Special Weather Statement	FFC	Douglas, Fulton	51 min
Oct 9, 3:41 PM EDT	Special Weather Statement	FFC	White	64 min
Oct 9, 3:53 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Murray, Whitfield	52 min
Oct 9, 4:25 PM EDT	Special Weather Statement	FFC	Treutlen	50 min
Oct 9, 4:56 PM EDT	Special Weather Statement	FFC	Banks	49 min
Oct 9, 4:58 PM EDT	Special Weather Statement	FFC	Forsyth	47 min
Oct 9, 5:20 PM EDT	Severe Thunderstorm Warning	FFC	Banks, Jackson, Madison	40 min
Oct 9, 6:15 PM EDT	Special Weather Statement	FFC	Jackson	45 min
Oct 9, 6:32 PM EDT	Severe Thunderstorm Warning	FFC	Lumpkin, Towns, Union, White	58 min
Oct 9, 7:00 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Clarke, Jackson, Madison, Oconee, Oglethorpe	60 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2014 Every severe thunderstorm warning in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.