Weather: Drastic Changes This Weekend (11/18 AM)

Amanda's Forecast Discussion

Good morning! Happy Friday!

High pressure ridging takes over for Friday and Saturday bringing mostly sunny skies and a dose of warm mid November temps. Friday afternoon, low 60s in the St. Lawrence Valley and southern Vermont into southern New Hampshire; mid to upper 50s elsewhere. Light south wind. Tonight, temperatures slide to the mid and upper 30s, before rebounding to widespread low 60s Saturday afternoon.

Saturday, although there will be loads of sunshine, thin, high clouds will stream in from west to east late afternoon into the evening. A very strong cold front approaching from the Great Lakes region provides those drastic changes we've been advertising for a few days. Starting first, with rain across northern New York Saturday night.

That rain will quickly change to snow in the Adirondacks down to around 1500' by Sunday morning. As post frontal showers spread into Vermont and eventually New Hampshire, snow begins falling in the Green Mountains, down to around 1000'. Showers throughout the day Sunday in the Champlain Valley and lower valleys of Vermont and southern New Hampshire, will likely be rain or a rain/snow mix. Sunday night, it becomes cold enough even to the valley floors for some of that snow to stick. But that won't amount to much piling up on the ground, because the main low is lifting off to the northeast by this point, taking the best moisture with it.

Monday and Tuesday, snow showers will become entirely terrain drive and confined to those upslope spots, the St. Lawrence Valley, Adirondacks, Green Mountains and Northeast Kingdom.

So what are we looking at for snowfall totals through Monday? The Champlain Valley and lower spots in and around Vermont...a dusting to 1-2". Above 1000' including lower spots in the NEK...2-4". Adirondacks, Green Mountains and St. Lawrence Valley...4-8". Summits could see a foot or more of new snow!

Other important weather issues to consider besides the snow, include (1) a gusty northwest or west wind that may lead to isolated power outages, especially in the mountains where we have those higher snow totals and (2) dropping temperatures Sunday, all the way to the upper 20s. Monday and Tuesday, the high reaches just into the mid 30s.

Brief ridging returns us to quiet, dry weather Wednesday...then Thanksgiving may bring another round of rain and/or snow that could complicate holiday travel.

Have a great weekend!

-Skytracker Meteorologist Amanda Lindquist


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