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🟡 Moderate
Gale Warning
Boston Harbor
Gale Warning issued December 18 at 12:27AM EST until December 20 at 7:00AM EST by NWS Boston/Norton MA
Alert Description
* WHAT...Southwest winds 20 to 30 kt with gusts up to 40 kt and waves around 2 feet expected. * WHERE...Boston Harbor. * WHEN...From 5 AM Friday to 7 AM EST Saturday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.
Safety Instructions
Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions.
Time Information
Effective
Dec 19, 2025, 10:00 AM
Expires
Dec 18, 2025, 9:00 PM
Issued
Dec 18, 2025, 5:27 AM
Alert Details
Severity
Moderate
Urgency
Expected
Certainty
Likely
Category
Met
Issued By
NWS Boston/Norton MA
National Weather Service