Good afternoon everyone,

Attached is our updated briefing package outlining concerns through Monday morning.

What / Where / When ...
  • Lingering winter weather
    • A mix of freezing drizzle and/or sleet will linger into the early evening hours, as late as 7 pm across the E MA coastline
    • Additional ice accretion of a trace forecast through that time
    • Winter weather advisories over RI and Southeast MA through 7 pm
  • Flash Freeze, Slick Conditions
    • Flash freeze ongoing along and southeast of the Boston to Providence corridor
    • Rapid freezing of wet surfaces, standing water
    • By evening, Boston to Providence will be in the teens, S&E in the 20s, Cape & Islands above freezing
    • At midnight, Boston to Providence will be in the single digits, S&E in the teens, Cape & Islands in the low 20s
  • Bitterly Cold Wind Chills
    • Bitterly cold wind chills of -15 to -30°F tonight into Monday morning.
    • Bitter cold will continue through Tuesday morning with wind chills around -10 to -15°F
    • Wind Chill headlines through Monday 
  • Potential Downed Limbs, Isolated Power Outages
    • Gusty winds may result in downed limbs and/or isolated power outages across areas N&W of the Hartford to Boston corridor where observed heavier amounts snow and ice remain on trees.
  • Moderate to Heavy Freezing Spray
    • Gale Warnings on all waters through Monday morning (may need to be extended as late as Tuesday morning).
    • Moderate to locally heavy freezing spray later tonight through Monday night
  • Minor Coastal Flooding
    • East-coastal MA Monday morning
    • Isolated pockets of minor flooding along the coast for typically prone locations, especially Boston Harbor south to Cape Cod Bay, as well as northern Nantucket
    • Mainly due to lingering swell and high astronomical tides
Confidence ...
  • High confidence overall, but can't rule out colder temperatures surging in a bit faster by an hour than presently forecast resulting in a quicker freeze across Southern New England. 
  • It's the expectation that as the storm presently passing over SE New England sweeps out to sea that cold air will surge quickly S&E over above-freezing areas of SE New England. Definitely a flash freeze is to be expected no matter what into this evening with all locations below freezing, Nantucket at the latest by 9 pm. 
If you have any questions, comments and/or concerns, please don't hesitate to reach out to us. 

Respectfully,

Benjamin Sipprell
Meteorologist
NWS Boston / Norton

If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat, or at the following:

National Weather Service Boston/Norton, MA
46 Commerce Way
Norton, MA 02766
508.622.3280
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