Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 184, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 20, 2011, 8:15 AM EDT for 6 counties in 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 20, 2011, 8:15 AM EDT (12:15 UTC)
- Expired
- Apr 20, 2011, 9:00 AM EDT
- In force
- 45 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Fannin County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Pickens County, GA, Whitfield County, GA
The radar
The Northeast Alabama radar (KHTX), 122 km from the middle of the area, began a volume at 12:18 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 20, 8:22 AM EDT | TSTM WND DMG | Ellijay, GA | GILMER COUNTY 911 RELAYED A REPORT OF A TREE DOWN IN ELLIJAY. |
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 20, 7:55 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.3 hours before the alert went out and 138 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
- 1316 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
009
WUUS52 KFFC 201215
SVRFFC
GAC111-123-129-213-227-313-201300-
/O.NEW.KFFC.SV.W.0184.110420T1215Z-110420T1300Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
815 AM EDT WED APR 20 2011
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
FANNIN COUNTY IN NORTH CENTRAL GEORGIA
GILMER COUNTY IN NORTH CENTRAL GEORGIA
WESTERN PICKENS COUNTY IN NORTH CENTRAL GEORGIA
GORDON COUNTY IN NORTHWEST GEORGIA
MURRAY COUNTY IN NORTHWEST GEORGIA
EASTERN WHITFIELD COUNTY IN NORTHWEST GEORGIA
* UNTIL 900 AM EDT
* AT 813 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 11 MILES NORTHWEST OF ETON TO 7 MILES
NORTHWEST OF RESACA TO 11 MILES WEST OF PLAINVILLE...MOVING EAST AT
55 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CHATSWORTH...CALHOUN...ELLIJAY...EAST ELLIJAY...BLUE RIDGE...
TALKING ROCK AND MORGANTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT 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.
&&
LAT...LON 3499 8416 3458 8433 3438 8451 3438 8458
3441 8459 3439 8496 3440 8511 3444 8509
3446 8511 3447 8509 3454 8508 3455 8507
3459 8507 3470 8501 3474 8497 3499 8488
TIME...MOT...LOC 1216Z 273DEG 48KT 3493 8486 3465 8498
3445 8517
$$1 follow-up statement
157
WWUS52 KFFC 201237
SVSFFC
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
837 AM EDT WED APR 20 2011
GAC111-123-129-213-227-313-201300-
/O.CON.KFFC.SV.W.0184.000000T0000Z-110420T1300Z/
WHITFIELD GA-PICKENS GA-MURRAY GA-FANNIN GA-GILMER GA-GORDON GA-
837 AM EDT WED APR 20 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 AM EDT
FOR GORDON...GILMER...FANNIN...MURRAY...WESTERN PICKENS AND EASTERN
WHITFIELD COUNTIES...
AT 836 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM JONES MILL TO CARTERS TO
SONORAVILLE...MOVING EAST AT 55 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
COLWELL...RANGER...HIGDON...ROUNDTOP...FAIRMOUNT...ELLIJAY...
EPWORTH...EAST ELLIJAY...TALONA...CHERRY LOG...BLAINE...HINTON...BLUE
RIDGE...MINERAL BLUFF...TALKING ROCK...CARTECAY...TALMADGE...ROY...
MORGANTON...LOVING...PISGAH AND SEQUOYAH LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON EDT
WEDNESDAY FOR NORTHERN GEORGIA.
&&
LAT...LON 3499 8416 3458 8433 3438 8451 3438 8458
3441 8459 3439 8496 3440 8511 3444 8509
3446 8511 3447 8509 3454 8508 3455 8507
3459 8507 3470 8501 3474 8497 3499 8488
TIME...MOT...LOC 1238Z 273DEG 48KT 3491 8450 3463 8462
3443 8481
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 7:39 AM EDT | Severe Thunderstorm Warning | FFC | Catoosa, Chattooga, Dade, Floyd, Gordon, Murray and 2 more | 51 min |
| Apr 20, 8:18 AM EDT | Flash Flood Warning | FFC | Whitfield | 116 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning in 2011
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.