As highlighted a few days ago the forecast for Saturday has held and a strong nor’easter with blizzard conditions is on our doorstep.

Watches & Warnings – NWS Boston

Key points:

  1. Low pressure develops south of Charleston, South Carolina Friday afternoon and rapidly strengthens as it tracks northeast towards Nantucket. Yes; it is undergoing bombogenesis.
  2. Snow overspreads the region early Saturday morning from south to north. Flakes begin flying at approximately:
    1. 11p along the south coast.
    2. 1a along the Massachusetts turnpike.
    3. 4a along the MA/NH border.
    4. 7a south of Concord, NH and along the Maine coast.
    5. 10a the rest of New England.
  3. Snow will fall heavy during the day Saturday. Snowfall rates 1-2″ per hour are expected. Localized 3-4″ per rates are possible. Across eastern areas thundersnow is possible later in the day.
  4. Wind and coastal flooding issues will be a problem. If you live on the coast and you’ve flooded in the past, you will again during this one. Near hurricane force winds are possible on the Cape and islands. Inland; occasional gusts will be quite strong 30-50 mph.
  5. The storm winds down from southwest to northeast Saturday night.
    1. 7p southwest CT.
    2. 10p the Boston area.
    3. 4a along the Maine coast.

Storm Evolution

Friday 7p to Sunday 7a – Precipitation & MSLP – Pivotal Weather

Wind Gusts

Maximum Wind Gust Potential – NWS Boston

Coastal Issues

Below is a loop of project wave heights. Doesn’t take much interpretation to know that’s a lot of water and energy being pushed up against the coast.

Friday 7p to Sunday 7a – Project Wave Heights – Tropical Tidbits

Snowfall

Saturday Snowfall

-Chris


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