MA Weather Forecast: Thunderstorms, 100-Degree Heat Advisory

As thunderstorms roll across Massachusetts Wednesday, the National Weather Service has issued a Heat Advisory for Thursday, when 100-degree heat index values will elevate the risk for heat-related illness.

Wednedesday has seen downpours all over the state with heavier ones rolling through from the east throughout the early afternoon.

According to Weather.com, heavy rain will pound the Worcester area and parts of Essex County around noon; Essex County might get the heaviest sustained rainfall. The Boston area will be getting soaked close to 1 p.m., with the rain tapering off just after 3. Plymouth County and the Cape should see lighter rain around the same time. See Weather.com's radar here for exactly when the heaviest rain is expected in your area.

Thursday's Heat Advisory will be in effect from noon until 7 p.m.

The National Weather Service says outdoor workers should schedule frequent breaks in shade or inside cool areas. The high temperatures and high humidity combine for a high possibility of heat illness, and the NWS reminds people to drink plenty of fluids and call 911 if they suffer heat stroke.

While Wednesday's temperatures sit in the 70s, Thursday could be the start of yet another heat wave for much of the state, and more storms are on deck this weekend.