Active Weather Alerts
Marine Weather Statement
Issued: 9:12 PM Jul. 21, 2026 – National Weather Service
...STRONG THUNDERSTORMS APPROACHING THE WATERS... The areas affected include... Boston Harbor... Cape Cod Bay... Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary... Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM... Massachusetts Bay and Ipswich Bay... Ocean Waters from Provincetown to Nantucket from 20 to 60 NM... Ocean Waters from the Merrimack River to Plymouth from 40 to 60 NM... At 511 PM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line extending from near Quincy to near Barnstable, moving northeast at 45 knots. Locations impacted include... Eastern Point Ma, The Coastal Waters East Of Cape Ann, Boston Light, Mass Bay Buoy 44029, Stellwagen Bank, Broad Sound, The Coastal Waters East Of Boston Harbor, Cape Cod Bay, Minot Light, Barnstable Harbor, Ocean Bluff-Brant Rock, Green Harbor, Manomet Point, Boston Harbor, The East End Of Cape Cod Canal, Boston Buoy 44013, Ipswich Bay, Race Point, Thatcher Island, and Plymouth Light. PRECAUTIONARY/PREPAREDNESS ACTIONS... Expect gusty winds to around 30 knots...briefly rough seas and lightning strikes. Consider heading for safe harbor until these storms pass. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible and keep away from ungrounded metal objects. &&
Special Weather Statement
Issued: 9:11 PM Jul. 21, 2026 – National Weather Service
...SHOWERS AND A FEW EMBEDDED THUNDERSTORMS WITH TORRENTIAL RAINFALL WILL RESULT IN POOR DRAINAGE STREET FLOODING DURING THE EVENING COMMUTE ACROSS EASTERN MASSACHUSETTS INCLUDING THE BOSTON METROPOLITAN AREA... At 508 PM EDT, Doppler radar indicated a cluster of showers and embedded thunderstorms with torrential rainfall. A quick 1 to 2 inches of rain may fall across this region with 90 minutes. This will result in areas of poor drainage street flooding during the evening commute. Motorists are urged to drive with extra caution and allow extra time to reach their destinations. HAZARD...Poor drainage street flooding during the evening commute across eastern Massachusetts including the Boston metropolitan area. SOURCE...Radar indicated showers and a few embedded thunderstorms with torrential rainfall. IMPACT...Water on roads that flood easily. Locations impacted include... Boston, Cambridge, Brockton, Quincy, Lynn, Newton, Somerville, Framingham, Waltham, Malden, Brookline, Medford, Weymouth, Revere, Peabody, Arlington, Everett, Salem, Billerica, and Beverly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Do not drive through flooded roads or underpasses. &&
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