Alert archive / Georgia / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 79, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Mar 21, 2017, 8:14 PM EDT for 9 counties in Georgia. It was in force for 46 min. 14 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
- Mar 21, 2017, 8:14 PM EDT (00:14 UTC)
- Expired
- Mar 21, 2017, 9:00 PM EDT
- In force
- 46 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Bartow County, GA, Cherokee County, GA, Cobb County, GA, Dawson County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Paulding County, GA, Polk County, GA
The radar
The Atlanta radar (KFFC), 96 km from the middle of the area, began a volume at 00:16 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 |
|---|---|---|---|
| Mar 21, 8:15 PM EDT | TSTM WND DMG | Ball Ground, GA | TREE DOWN NEAR THE INTERSECTION OF CANTON HWY AND MINERAL SPRINGS ROAD CAUSING A 2 CAR ACCIDENT |
| Mar 21, 8:15 PM EDT | TSTM WND DMG | Habersham, GA | TREES DOWNED...SNAPPED ALONG SEMINOLA ROAD NEAR CARTERSVILLE |
| Mar 21, 8:16 PM EDT | TSTM WND DMG | 2 Se Gober, GA | SEVERAL TREES DOWN BLOCKING THE ROAD |
| Mar 21, 8:20 PM EDT | TSTM WND DMG | 1 Wsw Buffington, GA | *** 1 INJ *** TREE AND POWERLINES DOWN IN ROADWAY CAUSING A CAR ACCIDENT |
| Mar 21, 8:20 PM EDT | TSTM WND DMG | Univeter, GA | TREE AND POWERLINES DOWN... POSSIBLE ROOF DAMAGE TO NEARBY BUILDING |
| Mar 21, 8:23 PM EDT | TSTM WND DMG | Canton, GA | SEVERAL TREES DOWNED ALONG MAGNOLIA SPRINGS TRACE IN CANTON. |
| Mar 21, 8:24 PM EDT | TSTM WND DMG | 1 Ese Belaire, GA | 2 TRACTOR TRAILERS WERE OVERTURNED ON I75 NEAR EXIT 288 DUE TO STRONG WINDS. CLOSEST NEARBY OBSERVING PLATFORM REPORTED 56 MPH GUST. |
| Mar 21, 8:25 PM EDT | TSTM WND DMG | Waleska, GA | MULTIPLE REPORTS OF TREES AND POWER LINES DOWN IN THE WALESKA AREA...SEVERAL BRUSH FIRES CAUSED BY DOWNED POWER LINES |
| Mar 21, 8:30 PM EDT | TSTM WND DMG | 1 Sw Avery, GA | TREES REPORTED DOWN AT THE INTERSECTION OF HICKORY FLAT HIGHWAY AND N STRINGER ROAD |
| Mar 21, 8:30 PM EDT | TSTM WND DMG | 3 Ssw Matt, GA | TREES DOWN IN FORSYTH COUNTY...POSSIBLE TREE ON HOUSE ON PLEASANT GROVE ROAD. |
| Mar 21, 8:30 PM EDT | TSTM WND DMG | Glenell, GA | MULTIPLE TREES DOWN ON POWERLINES AND A HOUSE |
| Mar 21, 8:30 PM EDT | TSTM WND GST 61 | 2 S Cumming, GA | GDOT RWIS SITE REPORTED 61 MPH WIND GUST WITH THE LINE |
| Mar 21, 8:35 PM EDT | TSTM WND DMG | 3 Ese Kennesaw, GA | POWER LINES DOWN ON COBB PL BLVD NEAR BARRETT PKWY. ALL SOUTHBOUND LANES BLOCKED THRU WED MORNING. |
| Mar 21, 8:40 PM EDT | TSTM WND DMG | Kingridge Estates, GA | ROAD SIGN REPORTED ON TOP OF A CAR AT INTERSECTION OF US-92 AND I-575. |
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 |
|---|---|---|---|
| Mar 21, 3:33 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.2 hours before the alert went out and 97 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
- 377 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 2348 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
The text
As transmitted.
723
WUUS52 KFFC 220014
SVRFFC
GAC015-057-067-085-115-117-121-223-233-220100-
/O.NEW.KFFC.SV.W.0079.170322T0014Z-170322T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
814 PM EDT TUE MAR 21 2017
The National Weather Service in Peachtree City has issued a
* Severe Thunderstorm Warning for...
Northern Paulding County in northwestern Georgia...
Cherokee County in north central Georgia...
Western Forsyth County in north central Georgia...
Northern Cobb County in north central Georgia...
Southern Floyd County in northwestern Georgia...
South central Dawson County in north central Georgia...
Northeastern Fulton County in north central Georgia...
Polk County in northwestern Georgia...
Bartow County in northwestern Georgia...
* Until 900 PM EDT
* At 812 PM EDT, severe thunderstorms were located extending from
near Hightower to near Canton to near Taylorsville to near Forney,
moving southeast at 50 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated, plus multiple reports of very strong
winds knocking down trees and powerlines across northwest
Georgia.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Marietta, Rome, Canton, Cartersville, Dallas, Cedartown, Cumming,
Sandy Springs, Roswell, Alpharetta, Milton, Kennesaw, Woodstock,
Acworth, Holly Springs, Rockmart, Euharlee, Emerson, Ball Ground
and Aragon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a DANGEROUS SITUATION. These storms are producing widespread
wind damage across portions of north Georgia in the last hour. 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 or tweet us your report at NWSATLANTA.
&&
LAT...LON 3429 8538 3422 8524 3438 8456 3438 8444
3435 8414 3417 8406 3394 8448 3391 8495
3392 8539 3428 8546
TIME...MOT...LOC 0012Z 314DEG 42KT 3434 8418 3424 8455 3414 8503 3414
8546
HAIL...0.88IN
WIND...60MPH
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 21, 8:00 PM EDT | Special Weather Statement | FFC | Walton | 30 min |
| Mar 21, 8:02 PM EDT | Severe Thunderstorm Warning | FFC | Banks, Jackson, Madison | 31 min |
| Mar 21, 8:07 PM EDT | Severe Thunderstorm Warning | FFC | Dawson, Fannin, Gilmer, Hall, Lumpkin, Pickens and 3 more | 38 min |
| Mar 21, 8:08 PM EDT | Severe Thunderstorm Warning | FFC | Morgan, Oconee, Walton | 52 min |
| Mar 21, 8:19 PM EDT | Flash Flood Warning | FFC | Clarke, Greene, Oconee, Oglethorpe, Taliaferro, Wilkes | 6 hr |
| Mar 21, 8:30 PM EDT | Special Weather Statement | FFC | Oglethorpe | 45 min |
| Mar 21, 8:40 PM EDT | Severe Thunderstorm Warning | FFC | Carroll, Clayton, Cobb, DeKalb, Douglas, Forsyth and 5 more | 50 min |
| Mar 21, 8:44 PM EDT | Severe Thunderstorm Warning | FFC | Banks, Barrow, Forsyth, Gwinnett, Hall, Jackson and 2 more | 46 min |
| Mar 21, 8:49 PM EDT | Severe Thunderstorm Warning | FFC | Greene, Oconee, Oglethorpe | 41 min |
| Mar 21, 9:20 PM EDT | Special Weather Statement | FFC | Butts, Clayton, Coweta, Fayette, Heard, Henry and 8 more | 40 min |
| Mar 21, 9:22 PM EDT | Severe Thunderstorm Warning | FFC | Barrow, Clarke, Greene, Jackson, Madison, Morgan and 5 more | 38 min |
| Mar 21, 9:45 PM EDT | Severe Thunderstorm Warning | FFC | Glascock, Greene, Hancock, Morgan, Oglethorpe, Putnam and 4 more | 45 min |
| Mar 21, 9:53 PM EDT | Special Weather Statement | FFC | Baldwin, Butts, Harris, Jasper, Jones, Lamar and 7 more | 52 min |
| Mar 21, 10:24 PM EDT | Special Weather Statement | FFC | Baldwin, Glascock, Hancock, Jefferson, Jones, Washington | 36 min |
| Mar 21, 10:55 PM EDT | Special Weather Statement | FFC | Emanuel, Johnson, Wilkinson | 50 min |
| Mar 21, 11:51 PM EDT | Special Weather Statement | FFC | Montgomery, Toombs | 39 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2017Every severe thunderstorm warning in 2017
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.