Good Morning,

We want to provide a heads up on the potential for hazardous weather Saturday night and Sunday. Low pressure is expected to track over southern New England or just offshore. Depending on the exact track, which will not be known for another day or two, the following impacts are possible:

Interior Light Icing:

Locations: Western and central Massachusetts, possibly portions of northern Connecticut.

Timing: Wintry mix late Saturday night into early Sunday morning, changing to rain by afternoon.

Impact: Slippery travel

Uncertainty: Type of wintry precipitation and timing of the exact changeover. There could be little or no snow, and simply light freezing rain changing to rain during the morning, or a wintry mix of snow and freezing rain changing to rain. In either case, amounts should be light, on the order of up to one inch of snow and a light coating (up to 1/10") of ice.

Strong Winds:

Locations: Cape Cod and the Islands

Timing: Late Friday afternoon and especially Friday night.

Sustained Wind: W 25 to 35 mph.

Wind Gusts: Up to 45 mph.

Impact: Minor damage such as downed tree limbs. Perhaps Isolated power outages.

Uncertainty: Winds may increase earlier in the afternoon, possibly as soon as 2 PM.

Marine Impacts:

Locations: Massachusetts and Rhode Island coastal waters

Timing: Friday afternoon and Friday night, before winds diminish Saturday morning

Wind Gusts: W 35 to 40 knots.

Seas: 4 to 7 feet on the inner bays and sounds; 10 to 15 ft offshore.

Impact: Hazardous conditions for mariners.

Uncertainty: Winds may increase to Gale force earlier in the afternoon, possibly as soon as

2 PM.

Minor Coastal Flooding:

Locations: Eastern Massachusetts coast and possibly the South Coast

Timing: Monday morning high tide (5:41 AM at Providence, 8:45 AM at Boston, and 9:46 AM on Nantucket)

Storm Surge: 1.0 to 1.5 feet

Inundation: Less than 1 foot above ground level

Impact: Some vulnerable shoreline roads may become temporarily impassable around high tide.

Uncertainty: High. Timing of highest surge may not coincide with high tide, which would lead to little or no impact. Wind direction, which may favor either coast, will not be confidently known for a day or two. Minor coastal flooding would be the worst case scenario.

Additional email briefings will be sent as needed.

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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Thanks,

Joe DelliCarpini and Andrew Loconto