Active Weather Alerts
Special Marine Warning
Issued: 10:41 PM Jul. 4, 2026 – National Weather Service
The National Weather Service in Boston/Norton has issued a * Special Marine Warning for... Boston Harbor... Massachusetts Bay and Ipswich Bay... * Until 745 PM EDT. * At 641 PM EDT, a strong thunderstorm was located near Boston, moving southeast at 25 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Boston Harbor, Boston Buoy 44013, Boston Light, Broad Sound, Quincy Harbor, Scituate Harbor, and Minot Light. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. Report severe weather to the Coast Guard or the National Weather Service. && HAIL...0.00IN; WIND...>34KTS
Airport Weather Warning
Issued: 10:26 PM Jul. 4, 2026 – National Weather Service
The National Weather Service in Boston/Norton has issued an * Airport Weather Warning for Ground Operations at: Hanscom Field * Until 700 PM EDT. * The Following Weather Hazards Are Expected: Cloud to ground lightning within 10 miles of the airport. * At 622 PM EDT, A thunderstorm was reported over Lexington, moving southeast at 20 mph.
Heat Advisory
Issued: 6:25 PM Jul. 4, 2026 – National Weather Service
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... * WHAT...Heat index values up to 100. * WHERE...Portions of northern Connecticut, majority of Massachusetts, and Rhode Island. * WHEN...Until 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. &&
Local Radar