Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 81, NWS Atlanta, GA

April 26, 20125 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 26, 2012, 9:34 AM EDT for 5 counties in Georgia. It was in force for 41 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 26, 2012, 9:34 AM EDT (13:34 UTC)
Expired: Apr 26, 2012, 10:15 AM EDT
In force: 41 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Fannin County, GA, Lumpkin County, GA, Towns County, GA, Union County, GA, White County, GA

The radar

The Greer radar (KGSP), 158 km from the middle of the area, began a volume at 13:35 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 26, 9:37 AM EDT	HAIL 1	Hiawassee, GA	THE PUBLIC REPORTED QUARTER SIZED HAIL IN HIAWASSEE WITH DURATION UNKNOWN.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 26, 8:10 AM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 1.6 hours before the alert went out and 281 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: 824 J/kg
Mixed-layer CIN: -212 J/kg
Mixed-layer LCL: 986 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 317 m²/s²
0-3 km storm-relative helicity: 344 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.1

Open this sounding in Storm Lab

The text

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

896 
WUUS52 KFFC 261334
SVRFFC
GAC111-187-281-291-311-261415-
/O.NEW.KFFC.SV.W.0081.120426T1334Z-120426T1415Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
934 AM EDT THU APR 26 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FANNIN COUNTY IN NORTH CENTRAL GEORGIA
  NORTHERN LUMPKIN COUNTY IN NORTH CENTRAL GEORGIA
  UNION COUNTY IN NORTH CENTRAL GEORGIA
  TOWNS COUNTY IN NORTHEAST GEORGIA
  NORTHERN WHITE COUNTY IN NORTHEAST GEORGIA

* UNTIL 1015 AM EDT

* AT 930 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZED
  HAIL...AND DAMAGING WINDS UP TO 60 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM 10 MILES NORTHEAST OF HIAWASSEE TO 16
  MILES NORTHEAST OF MCCAYSVILLE-COPPERHILL TO 23 MILES NORTHWEST OF
  MCCAYSVILLE-COPPERHILL...MOVING SOUTHEAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO YOUNG
  HARRIS...BLUE RIDGE...MORGANTON...UNICOI STATE PARK...HELEN...
  SUCHES AND BLAIRSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 PM EDT
THURSDAY AFTERNOON FOR NORTHERN GEORGIA.

&&

LAT...LON 3495 8354 3488 8365 3482 8365 3480 8367
      3477 8363 3473 8362 3466 8365 3462 8420
      3463 8419 3467 8425 3473 8426 3480 8431
      3484 8438 3485 8449 3499 8461 3500 8355
TIME...MOT...LOC 1334Z 301DEG 44KT 3503 8358 3509 8408
          3518 8463

$$

1 follow-up statement

158 
WWUS52 KFFC 261350
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
950 AM EDT THU APR 26 2012

GAC111-187-281-291-311-261415-
/O.CON.KFFC.SV.W.0081.000000T0000Z-120426T1415Z/
WHITE GA-UNION GA-TOWNS GA-LUMPKIN GA-FANNIN GA-
950 AM EDT THU APR 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 AM EDT
FOR FANNIN...NORTHERN LUMPKIN...TOWNS...UNION AND NORTHERN WHITE
COUNTIES...

AT 948 AM EDT...THE PUBLIC REPORTED QUARTER SIZED HAIL WITH A LINE 
OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZED 
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED 
ALONG A LINE EXTENDING FROM 9 MILES EAST OF TATE CITY TO ALEXANDERS 
MILL TO 9 MILES NORTHWEST OF MCCAYSVILLE-COPPERHILL...MOVING 
SOUTHEAST AT 50 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PLUM
ORCHARD GAP SHELTER...TITUS...JONES MILL...HIAWASSEE...COLWELL...
GUMLOG...HIGDON...EPWORTH...YOUNG HARRIS...MACEDONIA...IVY LOG...BLUE
RIDGE...NOTTELY DAM...MINERAL BLUFF...LOVING...MORGANTON...HEMP...
HURST...BRASSTOWN BALD...LOW GAP SHELTER...WHITLEY GAP SHELTER...
SMITHGALL WOODS CONSERVATION AREA...CAMP COLEMAN LAKE...UNICOI STATE
PARK...ANNA RUBY FALLS...ROBERTSTOWN...HELEN...SAUTEE...BLOOD
MOUNTAIN SHELTER...TURNERS CORNER...BLUE MOUNTAIN SHELTER...MOUNTAIN
SCENE...WOODS HOLE SHELTER...GOOCH MOUNTAIN SHELTER...HAWK MOUNTAIN
SHELTER...VOGEL STATE PARK...SUCHES...JONES CREEK...GADDISTOWN...
OWLTOWN...BLAIRSVILLE...TRACK ROCK...STOVER CREEK SHELTER...MARGRET
AND DIAL.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 PM EDT
THURSDAY AFTERNOON FOR NORTHERN GEORGIA.

&&

LAT...LON 3495 8354 3488 8365 3482 8365 3480 8367
      3477 8363 3473 8362 3466 8365 3462 8420
      3463 8419 3467 8425 3473 8426 3480 8431
      3484 8438 3485 8449 3499 8461 3500 8355
TIME...MOT...LOC 1350Z 301DEG 44KT 3493 8338 3499 8388
          3508 8442

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 9:16 AM EDT	Special Weather Statement	FFC	Fannin, Towns, Union	59 min
Apr 26, 10:14 AM EDT	Special Weather Statement	FFC	Towns	31 min
Apr 26, 6:28 PM EDT	Special Weather Statement	FFC	Towns, Union	47 min
Apr 26, 6:44 PM EDT	Severe Thunderstorm Warning	FFC	Towns, Union	46 min
Apr 26, 7:12 PM EDT	Special Weather Statement	FFC	Fannin, Murray	33 min
Apr 26, 7:29 PM EDT	Severe Thunderstorm Warning	FFC	Fannin	21 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.