Henry Margusity

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Winter Hits This Week with Snow and Very Cold Weather

January 21, 2013; 10:33 AM

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1. The first issue is the Norlun Trough setup across coastal New England tonight. This always a tough forecast because where the trough sets up, there can be very heavy snowfall of up to a foot. As of this morning, it looks like the trough should set up between Boston and Portland with coastal New Hampshire that place for the heaviest snows.

2. Light snows coming through Pennsylvania to New England today can cause icy roads due to the roads being a little warm from yesterday and the drop in temperature that is coming. While some areas will get a coating to an inch, roads can get icy in places.

3. Cold is king this week for areas from the Midwest to the Northeast. While we may some let up in the cold, this is just the start of a prolong cold spell that will run through much of February.

4. Friday's storm map is below. Given the cold weather, this will be a high ratio snow event with ratios of 20:1. I went for a general 3-6 inches north of the storm track, but some places in that area could get up to 8 inches. I did throw out the 6z GFS run this morning and stayed with the ECMWF and 00Z run of the GFS for snow amounts.

The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com

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About This Blog

Henry Margusity
AccuWeather.com severe weather expert, Henry Margusity, offers the Meteorological Madness blog including detailed analysis of severe weather across the US.