Alert archive / Georgia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 72, NWS Atlanta, GA

April 3, 2012Hall County, Jackson County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 3, 2012, 4:03 PM EDT for Hall County, Jackson County, Georgia. It was in force for 42 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 3, 2012, 4:03 PM EDT (20:03 UTC)
Expired: Apr 3, 2012, 4:45 PM EDT
In force: 42 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Hall County, GA, Jackson County, GA

The radar

The Atlanta radar (KFFC), 133 km from the middle of the area, began a volume at 20:05 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 3, 4:20 PM EDT	HAIL 1	3 Wsw Gillsville, GA

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, 8.1 hours before the alert went out and 128 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: 857 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 920 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -29 m²/s²
0-3 km storm-relative helicity: 5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

302 
WUUS52 KFFC 032003
SVRFFC
GAC139-157-032045-
/O.NEW.KFFC.SV.W.0072.120403T2003Z-120403T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
403 PM EDT TUE APR 3 2012

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL HALL COUNTY IN NORTH CENTRAL GEORGIA
  JACKSON COUNTY IN NORTHEAST GEORGIA

* UNTIL 445 PM EDT

* AT 401 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 TALMO...
  MOVING SOUTHEAST AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  GILLSVILLE...PENDERGRASS...MAYSVILLE...JEFFERSON AND COMMERCE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

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 3434 8365 3432 8365 3425 8357 3426 8348
      3423 8344 3407 8350 3424 8386 3436 8382
TIME...MOT...LOC 2003Z 293DEG 16KT 3425 8372

$$

1 follow-up statement

968 
WWUS52 KFFC 032031
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
431 PM EDT TUE APR 3 2012

GAC139-032039-
/O.CAN.KFFC.SV.W.0072.000000T0000Z-120403T2045Z/
HALL GA-
431 PM EDT TUE APR 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL HALL COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE COUNTY 
AFTER PRODUCING HAIL UP TO 1 INCH IN DIAMETER.

IF YOU SAW 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 3425 8357 3425 8348 3424 8345 3423 8344
      3407 8350 3419 8375 3428 8363 3429 8362
TIME...MOT...LOC 2029Z 295DEG 12KT 3422 8364

$$

GAC157-032045-
/O.CON.KFFC.SV.W.0072.000000T0000Z-120403T2045Z/
JACKSON GA-
431 PM EDT TUE APR 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR JACKSON COUNTY...

AT 427 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR 
PENDERGRASS...MOVING EAST-SOUTHEAST AT 10 MPH. ANOTHER STRONGER 
SEVERE STORM WAS LOCATED BETWEEN BRASELTON AND ARCADE

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO APPLE 
VALLEY...JEFFERSON...PEACH STATE SPEEDWAY AND COMMERCE.

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 3425 8357 3425 8348 3424 8345 3423 8344
      3407 8350 3419 8375 3428 8363 3429 8362
TIME...MOT...LOC 2029Z 295DEG 12KT 3422 8364

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 12:44 PM EDT	Special Weather Statement	FFC	Fannin	31 min
Apr 3, 12:46 PM EDT	Special Weather Statement	FFC	Lumpkin	29 min
Apr 3, 1:13 PM EDT	Special Weather Statement	FFC	Cherokee	32 min
Apr 3, 1:15 PM EDT	Special Weather Statement	FFC	Lumpkin, Union	30 min
Apr 3, 1:38 PM EDT	Special Weather Statement	FFC	Cherokee, Dawson, Fannin, Gilmer, Lumpkin, Pickens and 2 more	37 min
Apr 3, 2:15 PM EDT	Special Weather Statement	FFC	Dawson, Lumpkin, Towns, Union	30 min
Apr 3, 2:43 PM EDT	Special Weather Statement	FFC	Dawson, Lumpkin, Towns, Union, White	32 min
Apr 3, 3:09 PM EDT	Special Weather Statement	FFC	Dawson, Forsyth, Hall, Lumpkin, Towns, White	36 min
Apr 3, 3:41 PM EDT	Special Weather Statement	FFC	Hall	34 min
Apr 3, 4:27 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, Jackson	16 min
Apr 3, 4:55 PM EDT	Severe Thunderstorm Warning	FFC	Banks	21 min
Apr 3, 6:19 PM EDT	Special Weather Statement	FFC	Barrow, Clarke	26 min
Apr 3, 6:41 PM EDT	Special Weather Statement	FFC	Barrow, Clarke, Oconee, Oglethorpe	34 min
Apr 3, 7:23 PM EDT	Special Weather Statement	FFC	Barrow, Clarke	37 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.