Alert archive / Georgia / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 80, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Mar 21, 2017, 8:40 PM EDT for 11 counties in Georgia. It was in force for 50 min. 13 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, 8:40 PM EDT (00:40 UTC)
- Expired
- Mar 21, 2017, 9:30 PM EDT
- In force
- 50 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Carroll County, GA, Clayton County, GA, Cobb County, GA, DeKalb County, GA, Douglas County, GA, Forsyth County, GA, Fulton County, GA, Gwinnett County, GA, Haralson County, GA, Paulding County, GA, Polk County, GA
The radar
The Atlanta radar (KFFC), 65 km from the middle of the area, began a volume at 00:41 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, 8:40 PM EDT | TSTM WND DMG | 1 Nnw Greyfield, GA | ON GROVE PARKWAY SE... A LARGE TREE GREATER THAN 4 FEET IN DIAMETER WAS UPROOTED AND FELL INTO THE STREET. |
| Mar 21, 8:55 PM EDT | TSTM WND DMG | 1 Nnw Johns Creek, GA | TREES REPORTED DOWN NEAR THE INTERSECTION OF FINDLEY CHASE DRIVE AND FINDLEY ROAD |
| Mar 21, 8:55 PM EDT | TSTM WND DMG | 1 S Chattawood, GA | TREE ON PARK BLUFF LANE |
| Mar 21, 8:57 PM EDT | TSTM WND DMG | 1 Nne Johns Creek, GA | TREES REPORTED DOWN AT THE INTERSECTION OF JOHNS CREEK PARKWAY AND MEDLOCK BRIDGE ROAD |
| Mar 21, 8:57 PM EDT | TSTM WND DMG | 1 Nw Bethesda, GA | TREE ON A HOUSE ON FERRITE LOOP IN LAWRENCEVILLE |
| Mar 21, 8:58 PM EDT | TSTM WND DMG | River Colony, GA | TREE ON A HOME ALONG RALEIGH WAY IN LAWRENCEVILLE AREA |
| Mar 21, 8:58 PM EDT | TSTM WND GST 83 | 1 E Stone Mountain, GA | MEASURED WIND GUST OF 83 MPH FROM WEATHER STATION ATOP STONE MOUNTAIN. |
| Mar 21, 8:59 PM EDT | TSTM WND DMG | 1 E The Wildings, GA | TREE ON HOUSE ON CARLYSLE INN CT |
| Mar 21, 8:59 PM EDT | TSTM WND DMG | 1 W Pine Lake, GA | SEVERAL TREES REPORTED DOWN ON CARS AND HOUSES ALONG VERONA DRIVE. TIME ESTIMATED FROM RADAR. |
| Mar 21, 9:00 PM EDT | TSTM WND DMG | Oak Grove, GA | LARGE TREE FELL ON HOME ON CORALWOOD DR |
| Mar 21, 9:05 PM EDT | TSTM WND DMG | 1 Ese North Dekalb, GA | LARGE TREE FELL ON HOME ON TANNER DR |
| Mar 21, 9:05 PM EDT | TSTM WND DMG | 1 Ese North Dekalb, GA | PUBLIC AND MEDIA REPORTING MULTIPLE LARGE OAK TREES BLOWN OVER... 2 OF WHICH FELL ON HOMES NEAR TANNER DR |
| Mar 21, 9:09 PM EDT | TSTM WND DMG | 2 Ene Habersham Hills, GA | NUMEROUS REPORTS OF TREES DOWN THROUGHOUT GWINNETT COUNTY ACROSS ROADS.. NOTABLY I85 AT MM 117 IN BUFORD. |
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, 0.7 hours before the alert went out and 64 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.
075
WUUS52 KFFC 220040
SVRFFC
GAC045-063-067-089-097-117-121-135-143-223-233-220130-
/O.NEW.KFFC.SV.W.0080.170322T0040Z-170322T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Peachtree City GA
840 PM EDT TUE MAR 21 2017
The National Weather Service in Peachtree City has issued a
* Severe Thunderstorm Warning for...
Paulding County in northwestern Georgia...
DeKalb County in north central Georgia...
Southwestern Forsyth County in north central Georgia...
Central Carroll County in northwestern Georgia...
Cobb County in north central Georgia...
Haralson County in northwestern Georgia...
Douglas County in north central Georgia...
Gwinnett County in north central Georgia...
Fulton County in north central Georgia...
Northwestern Clayton County in north central Georgia...
Southern Polk County in northwestern Georgia...
* Until 930 PM EDT
* At 838 PM EDT, severe thunderstorms were located extending from
near Milton to Sandy Plains to near Eubank Lake to near Piedmont,
moving southeast at 40 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated, plus multiple reports of downed trees
and powerlines due to the very strong winds.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Atlanta, Marietta, Douglasville, Lawrenceville, Carrollton,
Decatur, Dallas, Cumming, Buchanan, Sandy Springs, Roswell, Johns
Creek, Alpharetta, Smyrna, Dunwoody, East Point, Milton, Kennesaw,
Duluth and Acworth.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a DANGEROUS SITUATION. These storms have been producing
widespread wind damage across northwest and north central Georgia.
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 3398 8508 3408 8450 3407 8442 3411 8442
3412 8437 3415 8436 3423 8418 3393 8380
3388 8386 3364 8428 3356 8485 3354 8531
3396 8540
TIME...MOT...LOC 0038Z 334DEG 33KT 3414 8423 3401 8449 3392 8505 3390
8558
HAIL...0.75IN
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, 8:14 PM EDT | Severe Thunderstorm Warning | FFC | Bartow, Cherokee, Cobb, Dawson, Floyd, Forsyth and 3 more | 46 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, 8:44 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.