Saturday, January 15, 2011

Snowshowers & Flurries possible Tonight, then some Snow/Ice and Rain for Monday Night into Tuesday. Cold weather continues for the rest of next week !

Saturday AM:
10:00 AM
Jan 15, 2011
Discussion

A fast moving clipper system now over the lower G/L's will move east to NY State tonight, and then off the New England coast on Sunday. A cold front associated with this system will move through the area tonight. A few snow showers and flurries are possible this evening as this front moves through, which could bring a fresh coating of snow to a few areas, but overall little or no snow accumulation can be expected from these flurries and light snow showers tonight.

High pressure will build back in for Sunday and Monday with more cold/dry weather. Highs will be in the mid 30's on Sunday and lower 30's on Monday and lows in the upper teens and low 20's. Clouds will increase during Monday as this High exits off the New England coast and a storm system approaches our region from the west. Just enough cold air will be in place during Monday night that a period of snow is likely across much of the Delaware Valley.

A Coating to 1" of snow/sleet accumulation is possible, before milder air moves in aloft and the surface, this will allow for all precipitation to change over to some sleet/freezing rain, later Monday night and early Tuesday morning. Expect some problems for the morning commute on Tuesday with a more prolonged period of Ice likely, for PHL and points north and west into the mid and late morning hours, so be aware of these problems for Tuesday morning across much of the Delaware Valley.

For the Lehigh Valley, The Pocono's, and NW NJ, more snow and ice accumulation can be expected there. 1"-3" for ABE/Lehigh Valley region and 3"-5" for the Pocono's and NW NJ, before some some minor/moderate icing and changeover to rain occurs.

A second coastal storm will develop off the SE coast and move NE on Tuesday. This will produce a period of moderate rain during later Tuesday morning into the afternoon hours, which could produce some localized flooding, as temps moderate to the upper 30's and low 40's. With .50" to 1.00" of rainfall expected, along with snow melt, I can see some urban/street flooding occurring during Tuesday. Things will begin to wind down during Tuesday night with some light rain, that could change to flurries before ending Wednesday morning. Colder air returns for Wednesday night through next weekend with Highs in the low to mid 30's and lows in the teens. A clipper system and re-enforcing shot of cold air could bring some light snow or flurries later in the week during Thursday night into Friday.

Take Care,
Ruggie

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