Detailed Look at Monday's Snow/Ice

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By Quincy Vagell on January 27, 2013, 9:45pm Last modified: January 28, 2013, 1:43pm

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As warm air lifts over a colder surface on Monday, a mixed bag of snow, sleet, freezing rain and rain is expected to impact Connecticut.

Monday morning: Light snow develops between 9 a.m. and noon.
Monday afternoon: Change to sleet and freezing rain inland, quickly to rain at shore.
Monday evening/night: Freezing drizzle continues inland with drizzle near the shoreline. 
Temperatures rise above freezing in most areas by daybreak Tuesday and precip also ends.

Northern Conn, especially hills: 1-3" of snow/sleet before a glaze of ice.
Inland southern Conn.: Up to 1" of snow sleet and then several hours of ice with a glaze.
Immediate shoreline: A coating of snow/sleet/ice possible before a change to plain rain.

The morning commute looks okay, but it's the afternoon/evening commute that will likely be icy for much of the state. Also, with precipitation expected to move in by late morning, this could cause travel issues in western Connecticut if schools/businesses opt to schedule early dismissals. The heaviest precipitation is expected between about noon and 5 p.m.

Below are some clickable images with approximate forecasts of what to expect:

Precip breaks out Monday morning ahead of a warm front. Timing looks to be between about 9 a.m. and noon with precipitation starting as snow. Temperatures at 850mb quickly warm across the area, but strong cold air damming will keep temperatures from about 900mb down to the surface near or below freezing for most inland areas through most of the event. The end result is a quick burst of snow, then a period of sleet, followed by freezing rain. The hills should see more sleet than freezing rain, but much of southern Connecticut may see an extended period of icing. Potential exists for 0.1" of a glaze and perhaps up to 0.2" if precipitation were to fall mainly in the form of freezing rain. The immediate shoreline should change to plain rain, but will need to monitor obs very closely and see how strong the cold air is.

A note that the 1-3" totals from above account for snow AND sleet. The highest snowfall totals should be under 2", but when you add in a burst of sleet, combined totals could possibly reach as high as 3".

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Quincy Vagell

Town: Marlborough, CT  

Reporting for WXedge since January 2012.

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