Jump to content

2017 December 8-9 Heavy Snow

NorthGeorgiaWX

164 views

All data from the Atlanta NWS office

Heavy Snowfall

December 8 - 9, 2017

 

Event Summary
Snow Accumulation Map
Recorded Snowfall Totals
Event Photos
 
Event Summary
A major early-season heavy snowfall affected north Georgia from Friday, December 8th into the morning of Saturday, December 9th. Many locations recorded up to a foot of snowfall, which is exceptionally rare for Georgia, especially in early December! This heavy snowfall also led to numerous power outages. At the height of the storm over 200,000 customers in north Georgia were in the dark. There was a sharp northwest to southeast gradient of accumulating snow through metro Atlanta. Areas southeast of Atlanta did not receive much accumulating snow, while areas north and west of the city received very significant totals.
 

Snow Accumulation Map:

Snowfall%20Totals%20Map%20-%2072%20hrs.p

Above: The heaviest snow accumulations occurred in a ribbon stretching from Carroll County into the northwestern Atlanta suburbs and into the north Georgia mountains. Up to a foot of snow accumulated in these areas!

 

Satellite Image December 9th:

Aqua_TrueColor_20171209a_day.jpg

Above: A visible satellite image of north Georgia on the afternoon of Saturday, December 9th shows much of the snow that fell on Friday and early Saturday remained on the ground.
 
Snowfall Reports Table
 
For snowfall reports from a specific county, click on the county name of interest below. Counties are sorted alphabetically.
(*Note that only counties from which reports were received are listed below.*)
 
Brookstone_sub_Acworth%20(Chris%20Dolce) Jasper%20(Dean%20Davis).jpg

Over 10" of snow accumulated in the Brookstone Subdivision in Acworth. (courtesy of Chris Dolce)

Acworth, GA

About 13" of snow was recorded in Jasper. (courtesy of Dean Davis)

Jasper, GA 

Hiram_12_in%20(Brandie%20Freeman).jpg Roswell_Cobb_Line%20(%40d_mez7).jpg

Trees drooped and broke under the weight of a foot of heavy, wet snow in Hiram. (courtesy of Brandie Freeman) 

Hiram, GA

About 8" of snow fell at this location along the Cobb/Fulton County border in Roswell. (courtesy @d_mez7)

Roswell, GA

Carroll_County_Courthouse%20(Carroll%20C Midtown%20(Jeremy%20Mills).jpg

The Carroll County Courthouse is covered in several inches of snow. (courtesy of Carroll County Gov't)

Carrollton, GA

Snow falling in Midtown Atlanta on December 8, 2017. (courtesy of Jeremy Mills)

Atlanta, GA

Inman_Park%20(AtlantaBeltline).jpg Fayette_County%20(Supeshooter).jpg

Several inches of snow accumulated along the Atlanta BeltLine in Inman Park. (courtesy of Atlanta BeltLine)

Atlanta, GA

This aerial view of a Fayette County neighborhood shows a blanket of snow on the morning of December 9th. (courtesy @supeshooter)

Fayette County, GA

UnionCounty2_SaturdayAM.png Powder_Springs%20(Cobb%20EMC).jpg

The Union County Historical Courthouse on the morning of December 9th.

Blairsville, GA

The heavy snow caused extensive damage to power infrastructure. (Courtesy of Cobb EMC)

Powder Springs, GA

Georgia_Tech%20(Zonglin%20Jack%20Li).jpg Berry_College.jpg

This aerial view of Georgia Tech and Midtown Atlanta shows the abundant snow cover. (Courtesy of Zonglin Jack Li)

Atlanta, GA

Berry College was picturesque in the snow. (Courtesy of Berry College)

Rome, GA

 

5501.thumb.jpg.801b9303de1c880ae86b1cc590c1eaae.jpg



0 Comments


Recommended Comments

There are no comments to display.

Guest
Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



  • Posts

    • Severe Thunderstorm Warning issued August 31 at 7:54PM EDT until July 31 at 9:00PM EDT by NWS View the full article
    • Flood Advisory issued August 17 at 9:57AM EDT by NWS View the full article
    • MD 1767 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR CENTRAL AND NORTHERN ILLINOIS AND WESTERN INDIANA Mesoscale Discussion 1767 NWS Storm Prediction Center Norman OK 0800 AM CDT Sat Aug 17 2019 Areas affected...central and northern Illinois and western Indiana Concerning...Severe potential...Watch unlikely Valid 171300Z - 171500Z Probability of Watch Issuance...20 percent SUMMARY...Thunderstorms will continue to move out of Missouri and into central Illinois this morning. Additional thunderstorms will be possible across northern Illinois as well. Hail and gusty winds may be possible with the strongest cores. The area will be monitored for potential watch, but current indications are that the threat should remain sufficiently isolated to not warrant one. DISCUSSION...Long-lived cluster of thunderstorms continues to move east from northern Missouri into central Iowa. Most-unstable CAPE along and ahead of this cluster is around 1000-1500 J/kg; however, deep-layer shear is generally less than 25 knots. Thus, although a severe hail or strong thunderstorm wind gust will be possible with the strongest cores, the threat should remain sufficiently isolated/episodic that a watch is not currently anticipated for this activity. To the north, across northern Illinois, additional thunderstorms may develop within a belt of stronger midlevel flow, likely in response to ageostrophic forcing from the mesoscale convective system to the southwest. The result will be thunderstorms developing in an objectively analyzed environment of most-unstable CAPE around 1000-1500 J/kg and deep-layer shear of 40-50 knots. Although this would normally suggest a threat for organized severe thunderstorms, considerable uncertainty remains regarding convective coverage and longevity. As such, area will continue to be monitored for potential watch, but expectations are that the threat will remain too isolated in nature to warrant watch issuance. ..Marsh/Edwards.. 08/17/2019 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...IWX...IND...LOT...ILX...LSX...DVN... LAT...LON 39948994 41609062 42338945 41488669 39198715 38529025 39948994 Read more View the full article
    • Saturday, August 17 2019 Preference: Blend of the 00Z GFS/ECMWF, and GEFS/ECENS means Confidence: Average The large scale flow across the CONUS will remain broadly cyclonic through the weekend, although gradual height rises are expected by later Sunday and early next week across the central and southern U.S. Shortwaves rotating through the flow will be the primary sensible weather makers, and it is discrepancy among these features that lead to the preferred blend. The most notable differences involve the 00Z NAM which continues to be a relatively strong outlier with several of these vort lobes impacting the Plains/Midwest that are shedding around a complex of upper lows in Canada. In fact, the NAM gradually becomes out of tolerance with the global model consensus across much of central/southern Canada by the end of the period. The 00Z UKMET also is problematic with energy it has lifting up across the upper Midwest through early Sunday as it is sharper and stronger with a surface wave lifting up along a cold front crossing this region. The UKMET also is out of tolerance across Canada versus the model consensus, which is strongly supported at this point by the 00Z GFS and 00Z ECMWF overall. Across the Southeast and Mid-Atlantic coastal plain, a persistent and quasi-stationary frontal zone is expected to be the focus for multiple waves of low pressure. One wave of low pressure will eject northeast off the Mid-Atlantic coast and out to sea on Saturday. Meanwhile, a second wave of low pressure situated already down across northern FL will lift northeast very close to the Southeast and southern-Mid-Atlantic coastline through Sunday before then exiting offshore and out to sea on Monday. The 00Z NAM, 00Z CMC and especially the 00Z UKMET intensify this low center as it lifts northeast up the coast, with the 00Z GFS and 00Z ECMWF showing more modest development. A large number of Canadian ensemble members and a fair number of the GEFS members favor at least a modest low center, with the vast majority of the ECENS members more ill-defined. The 00Z NAM-conest, 00Z ARW/ARW2 solutions show a bit more development comparable to the NAM, but the 00Z NMMB is a weak outlier. There is strong support toward a GFS/ECMWF blend out of the latest GEFS/ECENS means across the CONUS, and thus a blend of all of these will be preferred at this point. However, a slightly stronger version of the GFS/ECMWF solutions is suggested along the Southeast and Mid-Atlantic coasts with the low center lifting northeast across these areas on Sunday.  
    • MD 1766 CONCERNING SEVERE THUNDERSTORM WATCH 589... FOR EASTERN KANSAS AND MISSOURI Mesoscale Discussion 1766 NWS Storm Prediction Center Norman OK 0440 AM CDT Sat Aug 17 2019 Areas affected...eastern Kansas and Missouri Concerning...Severe Thunderstorm Watch 589... Valid 170940Z - 171145Z The severe weather threat for Severe Thunderstorm Watch 589 continues. SUMMARY...Thunderstorm intensity continues to decrease across most of the area, and this trend should continue. The lone exception is a storm moving southeast toward southwest Missouri. Gusty winds and hail will be the main threat with this storm. A new watch is currently not anticipated. DISCUSSION...Widespread thunderstorm activity and effects from what appears to be a large heat burst across south-central Kansas appear to have stabilized much of the airmass across Kansas. The effect of this is an general decrease of thunderstorm intensity. Farther east, across far eastern Kansas and western Missouri, a more favorable thermodynamic environment for thunderstorms remains in place, where most-unstable CAPE values around 2000 J/kg exist. However, the kinematic environment is more hostile to thunderstorm organization with deep-layer shear generally less than 25 knots. The most intense thunderstorm across the central United States is moving across west-cental Missouri, within the aforementioned environment. Given the current thunderstorm organization and favorable thermodynamic environment ahead of the storm, continued gusty winds and hail will be possible with this storm in the short term. However, with time, thunderstorm organization will lessen and therefore the thunderstorm should weaken. In fact, recent radar imagery suggests this may already be underway with indications of a turn to the east occurring. To the northeast, across northeast Missouri, a couple of thunderstorms have briefly intensified within the last hour. The thermodynamic environment here is weaker than farther southwest, but the deep-layer shear is better. Current suggestion is that although a brief severe hail or wind threat may develop with any sustained/intense updraft, the overall threat should remain limited and a new watch will not be needed. ..Marsh.. 08/17/2019 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LSX...SGF...EAX...OAX...TOP...ICT... LAT...LON 38209787 38949791 38979735 40359734 40359688 40529686 40519644 40279647 40249506 40159506 40139462 40049460 40029422 40129418 40119377 40269374 40239332 40069337 40009228 39259233 38689264 38689307 38519307 38529354 38239352 38199406 38049405 38069593 38199596 38159635 38089637 38119718 38179718 38209787 Read more View the full article
×
×
  • Create New...