Eversource: Heat caused thousands to lose power in Danbury area June 30, 2021 FacebookTwitterEmail File photo — Eversource trucks staged at Branchville train station in Ridgefield, Conn.Macklin Reid / Hearst Connecticut Media The National Weather Service issued a severe thunderstorm watch for all of Connecticut on Wednesday afternoon, as wind and rain were expected to close out the third and final day of hot and humid weather. The storms was expected to bring isolated hail up to the size of a quarter, the agency said, while scattered gusts of wind up to 70 mph are likely. Frequent lightning was possible. Eversource, the state’s largest electrical supplier, reported more than 3,500 customers were without power as of 7:15 p.m., with more than 2,000 outages reported in Danbury alone.