A severe thunderstorm warning has been issued for the Boston area until 3:30 p.m. as a line of heavy storms moves toward the coast, bringing the risk of heavy downpours, damaging winds up to 70 miles per hour,

During the day, because of the tropical air mass in place, showers and thunderstorms can form at just about any time. Fox 32 Meteorologist Mike Caplan has the forecast. A Flood Watch is in effect through the evening for most of the viewing area.