[Weather] [2025.08.19 PM] NWS Boston EM Briefing: Erin's Impacts to Southeast Coastal New England Late This Week

[BOX Operations - NOAA Service Account]

Good afternoon,

Hurricane Erin is expected to pass well offshore later this week but some
fringe effects will be felt in coastal areas of southern New England:

High Surf and Rip Currents

   -

   High Surf Advisories are in effect into Friday.
   -

   Ocean beaches with south-facing exposures are most vulnerable and could
   see 10-15 foot breaking waves.
   -

   Water temps remain warm and some beachgoers may flock to the waters
   which could put more people at risk.
   -

   Keep in mind that many beaches no longer have lifeguards for the season.
   -

   Anyone going to view the surf should stay at a safe distance and off
   jetties or piers.


Significant Beach Erosion

   -

   Swell from Erin should result in dune and beach erosion on south facing
   shores late this week, especially on Martha’s Vineyard and Nantucket, which
   have had significant erosion over the past few winters from nor’easters.


Hazardous Marine Conditions on the Coastal Waters

   -

   Gale Watches are in effect for most nearshore and outer offshore waters
   Thursday and Friday.
   -

   Gale force NE winds could gust as high as 40 kt on the waters near Cape
   Cod and Nantucket Friday into Saturday with seas of 15-20 feet offshore.


Minor to Perhaps Moderate Coastal Flooding

   -

   Minor coastal flooding is possible in Nantucket Harbor, Edgartown
   Harbor, Vineyard Haven, and Oak Bluffs Thursday evening and especially
   Friday evening, when low-end moderate flooding is possible with a storm
   surge of 1 to 2 feet and waves up to 8 feet on Nantucket Sound.
   -

   Elsewhere, no significant coastal flooding is expected.


We'll update this briefing *by Wednesday afternoon*, or sooner if there are
substantial changes which would warrant otherwise.

Thank You!
Meteorologists: Andrew Loconto, Emily McMinn and Joe DelliCarpini

If you have any questions or would like more information, please don't
hesitate to contact us. You can reach us via:
email: box.operations at noaa.gov
phone: 508.622.3280
Slack/NWSChat 2.0 <https://nwschatws.slack.com/> (for approved partners)
social media: Website <http://www.weather.gov/boston> | Facebook
<http://www.facebook.com/NWSBoston> | Twitter
<http://www.twitter.com/NWSBoston>
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