Alert archive / Georgia / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 348, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Dec 20, 2017, 12:44 PM EST for 5 counties in Georgia. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Dec 20, 2017, 12:44 PM EST (17:44 UTC)
- Expired
- Dec 20, 2017, 1:15 PM EST
- In force
- 31 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Coweta County, GA, Fayette County, GA, Meriwether County, GA, Pike County, GA, Spalding County, GA
The radar
The Atlanta radar (KFFC), 16 km from the middle of the area, began a volume at 17:48 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.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.7 hours before the alert went out and 18 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
- 11 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 572 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 276 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
210 WUUS52 KFFC 201744 SVRFFC GAC077-113-199-231-255-201815- /O.NEW.KFFC.SV.W.0348.171220T1744Z-171220T1815Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Peachtree City GA 1244 PM EST WED DEC 20 2017 The National Weather Service in Peachtree City has issued a * Severe Thunderstorm Warning for... Southwestern Spalding County in west central Georgia... Northeastern Meriwether County in west central Georgia... South central Fayette County in north central Georgia... Northwestern Pike County in west central Georgia... Southeastern Coweta County in west central Georgia... * Until 115 PM EST * At 1243 PM EST, a severe thunderstorm was located over Digbey, or 13 miles northwest of Zebulon, moving southeast at 50 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Senoia, Brooks, Haralson, Alvaton and Digbey. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. 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 3320 8467 3333 8457 3326 8441 3310 8452 TIME...MOT...LOC 1743Z 293DEG 42KT 3323 8453 TORNADO...POSSIBLE 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 |
|---|---|---|---|---|
| Dec 19, 7:34 PM EST | Dense Fog Advisory | FFC | Baldwin, Bartow, Bibb, Bleckley, Butts, Carroll and 76 more | 11 hr |
| Dec 20, 11:52 AM EST | Special Weather Statement | FFC | Heard, Troup | 23 min |
| Dec 20, 12:11 PM EST | Special Weather Statement | FFC | Greene | 34 min |
| Dec 20, 12:15 PM EST | Special Weather Statement | FFC | Coweta, Meriwether, Troup | 30 min |
| Dec 20, 12:33 PM EST | Special Weather Statement | FFC | Harris | 27 min |
| Dec 20, 12:47 PM EST | Special Weather Statement | FFC | Greene, Taliaferro, Warren | 43 min |
| Dec 20, 12:50 PM EST | Severe Thunderstorm Warning | FFC | Harris, Meriwether, Troup | 25 min |
| Dec 20, 1:09 PM EST | Severe Thunderstorm Warning | FFC | Lamar, Meriwether, Pike, Upson | 36 min |
| Dec 20, 1:24 PM EST | Special Weather Statement | FFC | Glascock, Warren | 51 min |
| Dec 20, 1:27 PM EST | Severe Thunderstorm Warning | FFC | Chattahoochee, Harris, Marion, Muscogee, Talbot | 48 min |
| Dec 20, 1:45 PM EST | Special Weather Statement | FFC | Butts, Jasper, Jones, Lamar, Monroe, Putnam | 45 min |
| Dec 20, 2:10 PM EST | Special Weather Statement | FFC | Crawford, Talbot, Taylor | 50 min |
| Dec 20, 2:30 PM EST | Special Weather Statement | FFC | Baldwin, Hancock, Jones | 30 min |
| Dec 20, 2:55 PM EST | Special Weather Statement | FFC | Peach, Twiggs | 35 min |
| Dec 20, 3:01 PM EST | Special Weather Statement | FFC | Glascock, Washington | 29 min |
| Dec 20, 3:22 PM EST | Special Weather Statement | FFC | Johnson | 38 min |
| Dec 20, 3:43 PM EST | Special Weather Statement | FFC | Jefferson, Washington | 32 min |
| Dec 20, 4:01 PM EST | Special Weather Statement | FFC | Johnson, Laurens | 29 min |
| Dec 20, 4:36 PM EST | Special Weather Statement | FFC | Emanuel, Treutlen | 24 min |
| Dec 20, 5:52 PM EST | Special Weather Statement | FFC | Cobb, Douglas, Fulton, Heard | 23 min |
| Dec 20, 6:20 PM EST | Special Weather Statement | FFC | Clayton, Coweta, Fayette, Troup | 25 min |
| Dec 20, 6:50 PM EST | Special Weather Statement | FFC | Clayton, DeKalb, Fayette, Henry, Meriwether, Newton and 3 more | 25 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.