Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 80, NWS Atlanta, GA

April 17, 2012Banks County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 17, 2012, 7:00 PM EDT for Banks County, Georgia. It was in force for 45 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: Apr 17, 2012, 7:00 PM EDT (23:00 UTC)
Expired: Apr 17, 2012, 7:45 PM EDT
In force: 45 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

County Banks County, GA

The radar

The Greer radar (KGSP), 132 km from the middle of the area, began a volume at 23:03 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
Apr 17, 7:11 PM EDT	TSTM WND GST 60	2 S Baldwin, GA	THE PUBLIC RELAYED A REPORT OF A 60 MPH GUST MEASURED TWO MILES SOUTH OF BALDWIN

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, 11.0 hours before the alert went out and 147 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: 371 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 618 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 43 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.

350 
WUUS52 KFFC 172300
SVRFFC
GAC011-172345-
/O.NEW.KFFC.SV.W.0080.120417T2300Z-120417T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
700 PM EDT TUE APR 17 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BANKS COUNTY IN NORTHEAST GEORGIA

* UNTIL 745 PM EDT

* AT 656 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 6 MILES
  SOUTHWEST OF HOLLINGSWORTH...MOVING NORTHEAST AT 25 MPH.

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

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3449 8347 3447 8340 3446 8339 3430 8357
      3436 8367 3439 8366 3441 8365 3442 8362
      3444 8361 3450 8353
TIME...MOT...LOC 2301Z 219DEG 23KT 3443 8358

$$

1 follow-up statement

601 
WWUS52 KFFC 172337
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
737 PM EDT TUE APR 17 2012

GAC011-172345-
/O.CON.KFFC.SV.W.0080.000000T0000Z-120417T2345Z/
BANKS GA-
737 PM EDT TUE APR 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR NORTHERN BANKS COUNTY...

THE SEVERE THUNDERSTORM THAT PROMPTED THE INITIAL WARNING HAS MOVED 
OUT OF THE COUNTY. HOWEVER...AT 734 PM EDT...NATIONAL WEATHER 
SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM APPROXIMATELY 
10 MILES SOUTHWEST OF HOLLINGSWORTH. THIS STORM WAS MOVING NORTHEAST 
AT 20 MPH AND IT MAY ALSO CONTAIN LARGE HAIL UP TO THE SIZE OF 
NICKELS. THEREFORE...THE WARNING WILL CONTINUE BUT WILL BE ALLOWED 
TO EXPIRE AT 745 PM.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PINEFIELD CROSSROADS.

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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3449 8347 3447 8340 3446 8339 3430 8357
      3436 8367 3439 8366 3441 8365 3442 8362
      3444 8361 3450 8353
TIME...MOT...LOC 2336Z 208DEG 17KT 3433 8359

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 3:05 PM EDT	Special Weather Statement	FFC	Paulding	25 min
Apr 17, 3:10 PM EDT	Special Weather Statement	FFC	Union	35 min
Apr 17, 3:26 PM EDT	Special Weather Statement	FFC	Bartow	34 min
Apr 17, 4:04 PM EDT	Special Weather Statement	FFC	Banks, Hall, Jackson	26 min
Apr 17, 4:13 PM EDT	Special Weather Statement	FFC	Bartow, Paulding	32 min
Apr 17, 4:26 PM EDT	Special Weather Statement	FFC	DeKalb	34 min
Apr 17, 4:27 PM EDT	Special Weather Statement	FFC	Banks	18 min
Apr 17, 4:37 PM EDT	Special Weather Statement	FFC	Carroll	38 min
Apr 17, 4:43 PM EDT	Special Weather Statement	FFC	Cherokee, Pickens	32 min
Apr 17, 5:12 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Dawson, Forsyth, Pickens	48 min
Apr 17, 5:19 PM EDT	Special Weather Statement	FFC	Towns, White	26 min
Apr 17, 5:22 PM EDT	Special Weather Statement	FFC	Coweta	23 min
Apr 17, 5:35 PM EDT	Special Weather Statement	FFC	Douglas	25 min
Apr 17, 5:44 PM EDT	Special Weather Statement	FFC	Barrow	31 min
Apr 17, 6:00 PM EDT	Severe Thunderstorm Warning	FFC	Dawson, Lumpkin	45 min
Apr 17, 6:02 PM EDT	Special Weather Statement	FFC	Douglas	28 min
Apr 17, 6:10 PM EDT	Special Weather Statement	FFC	Hall	35 min
Apr 17, 6:15 PM EDT	Special Weather Statement	FFC	DeKalb	30 min
Apr 17, 6:39 PM EDT	Special Weather Statement	FFC	DeKalb	36 min
Apr 17, 6:41 PM EDT	Special Weather Statement	FFC	Hall, Lumpkin, White	34 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2012 Every severe thunderstorm warning in 2012

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.