Alert archive / Georgia / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 78, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 17, 2012, 5:12 PM EDT for 4 counties in Georgia. It was in force for 48 min. 3 reports 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, 5:12 PM EDT (21:12 UTC)
- Expired
- Apr 17, 2012, 6:00 PM EDT
- In force
- 48 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Cherokee County, GA, Dawson County, GA, Forsyth County, GA, Pickens County, GA
The radar
The Atlanta radar (KFFC), 100 km from the middle of the area, began a volume at 21:12 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, 5:20 PM EDT | HAIL 1 | 4 E Canton, GA | TRAINED STORM SPOTTER RELAYED A REPORT OF ONE INCH HAIL 4 MILES EAST OF CANTON. |
| Apr 17, 5:27 PM EDT | HAIL 0.75 | 7 Ene Canton, GA | CHEROKEE COUNTY EMA RELAYED A REPORT FROM A STORM SPOTTER ABOUT PENNY SIZE HAIL 7 MILES ENE OF CANTON. |
| Apr 17, 6:00 PM EDT | HAIL 1 | 4 Ssw Dawsonville, GA | A COUNTY OFFICIAL REPORTED QUARTER SIZED HAIL AT SEVERAL LOCATIONS ACROSS THE SOUTHERN PORTION OF THE COUNTY. |
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, 9.2 hours before the alert went out and 98 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
125
WUUS52 KFFC 172112
SVRFFC
GAC057-085-117-227-172200-
/O.NEW.KFFC.SV.W.0078.120417T2112Z-120417T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
512 PM EDT TUE APR 17 2012
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
SOUTH CENTRAL DAWSON COUNTY IN NORTH CENTRAL GEORGIA
NORTHWESTERN FORSYTH COUNTY IN NORTH CENTRAL GEORGIA
SOUTHEASTERN PICKENS COUNTY IN NORTH CENTRAL GEORGIA
* UNTIL 600 PM EDT
* AT 508 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
BUFFINGTON...MOVING NORTHEAST AT 20 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FREE
HOME AND BALL GROUND.
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 3448 8426 3430 8407 3417 8426 3419 8426
3419 8433 3417 8435 3417 8436 3413 8436
3412 8440 3422 8452
TIME...MOT...LOC 2112Z 225DEG 18KT 3422 8436
$$2 follow-up statements
995 WWUS52 KFFC 172133 SVSFFC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PEACHTREE CITY GA 533 PM EDT TUE APR 17 2012 GAC057-085-117-227-172200- /O.CON.KFFC.SV.W.0078.000000T0000Z-120417T2200Z/ PICKENS GA-CHEROKEE GA-DAWSON GA-FORSYTH GA- 533 PM EDT TUE APR 17 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR NORTHWESTERN FORSYTH...SOUTH CENTRAL DAWSON...NORTHEASTERN CHEROKEE AND SOUTHEASTERN PICKENS COUNTIES... AT 528 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR LATHEMTOWN...MOVING NORTHEAST AT 20 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO REAVIS MOUNTAIN...HIGHTOWER...HOLLIS LATHEM RESERVOIR...MATT AND SILVER CITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A STORM SPOTTER REPORTED QUARTER SIZED HAIL AS THIS STORM MOVED THROUGH EASTERN CHEROKEE COUNTY. IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY. IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX. && LAT...LON 3430 8407 3420 8430 3434 8440 3448 8426 TIME...MOT...LOC 2133Z 225DEG 18KT 3429 8427 $$
156 WWUS52 KFFC 172140 SVSFFC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PEACHTREE CITY GA 540 PM EDT TUE APR 17 2012 GAC057-227-172150- /O.CAN.KFFC.SV.W.0078.000000T0000Z-120417T2200Z/ PICKENS GA-CHEROKEE GA- 540 PM EDT TUE APR 17 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHEROKEE AND SOUTHEASTERN PICKENS COUNTIES IS CANCELLED... THE STORM HAS MOVED OUT OF CHEROKEE AND PICKENS COUNTIES. 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 3448 8426 3430 8407 3422 8425 3447 8427 TIME...MOT...LOC 2140Z 225DEG 18KT 3431 8424 $$ GAC085-117-172200- /O.CON.KFFC.SV.W.0078.000000T0000Z-120417T2200Z/ DAWSON GA-FORSYTH GA- 540 PM EDT TUE APR 17 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR NORTHWESTERN FORSYTH AND SOUTH CENTRAL DAWSON COUNTIES... AT 537 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR HIGHTOWER...MOVING NORTHEAST AT 20 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HOLLIS LATHEM RESERVOIR...MATT AND SILVER CITY. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU SEE WIND DAMAGE...HAIL OR FLOODING...WAIT UNTIL THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX. && LAT...LON 3448 8426 3430 8407 3422 8425 3447 8427 TIME...MOT...LOC 2140Z 225DEG 18KT 3431 8424 $$
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, 5:19 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 |
| Apr 17, 7:00 PM EDT | Severe Thunderstorm Warning | FFC | Banks | 45 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2012Every 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.