Snowfall Map, Summary: Dec 29-30
By Quincy Vagell on December 30, 2012, 5:08pm Last modified: January 1, 2013, 3:44pm
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Final snowfall totals from December 29-30, 2012. Click here for full-size image
Low pressure rapidly developed south of New England and produced an area of heavy snow across Connecticut. Precipitation briefly started as a mix or rain along the I-95 corridor before all areas eventually changed back to snow.
The heaviest snowfall was across inland areas of the eastern half of Connecticut. Those areas picked up anywhere from 8 to 12 inches, with a few reports up to 12.4 inches. Coastal sections saw slightly less snowfall as warmer surface temperatures and a period of mixed precipitation or rain kept totals down. Extreme western Connecticut missed out on most of the heavy snow, so there were some reports below 4 inches there.
Here is a sample of the highest snowfall totals: (location / total in inches / source)
Killingworth 12.4 WXedge
Gales Ferry 12.4 WXedge
Higganum 12.3 WXedge
Franklin 12.0 WXedge
East Hampton 12.0 WXedge
Clinton 12.0 WXedge
North Stonington 12.0 National Weather Service
Scotland 12.0 WXedge
Pomfret 11.5 National Weather Service
Brooklyn 11.5 National Weather Service
Voluntown 11.3 WXedge
East Haddam 11.3 WXedge
Madison 11.2 WXedge
Dayville 11.2 National Weather Service
Wethersfield 11.0 WXedge
Wallingford 11.0 WXedge
Tolland 11.0 National Weather Service
Moosup 11.0 National Weather Service
Middletown 11.0 WXedge
Madison 11.0 WXedge
Coventry 11.0 National Weather Service
Oakdale 11.0 National Weather Service
Lisbon 11.0 National Weather Service
In all, 86 reports from viewers like you were sent in to WXedge.com!
Scattered snow showers reached portions of western Connecticut by late morning on the 29th. This snow was associated with weakening low pressure over Pennsylvania.
The main storm began to develop east of Virginia during the afternoon.
Steady precipitation overspread the state from southwest to northeast between about 1 and 3 p.m. Most areas saw snow, but some ice pellets and graupel were reported near and southeast of I-95. Coastal New London County even switched to rain for a time.
Colder air moved in and a heavy band of snow set up over central and eastern Conn.
Snowfall rates between 1 and 3 inches per hour hammered portions of New Haven, Middlesex and New London Counties. This area of heavy snow eventually moved northeast and also impacted Tolland and Windham Counties. This band was a bit more intense than som predictions, resulting in higher snowfall amounts than forecast.
Extreme western Connecticut was too far west to be affected by this heavy snow.
The heaviest snow fell between about 4 p.m. and 9 p.m. before the shield of precipitation began to break apart. After midnight, the only leftover precipitation was occasional snow showers. By then, the bulk of the accumulation was over.
The map is compiled of reports from NWS offices in Albany, N.Y., Taunton, Mass. and Upton, N.Y., as well as totals sent in directly to WXedge.com and Storm Team 8 meteorologists and reports shared via social media.
I personally recorded a total of 7.3 inches in New Haven around 11:30 p.m. on the 29th. When I got home to Naugatuck, 6.8 inches was on the ground, but it's possible that some compaction has taken place since the snow had ended at least an hour earlier.
***If you have a total that differs substantially from the map, let us know.***
As a final note, the totals represented in the map are averaged and approximate.
The next slide has a few more graphics from the event.