The chance of precipitation during the day remains at 30%. The likelihood of rain increases significantly tonight, with showers and thunderstorms probable before 2 a.m., followed by a chance of showers continuing overnight. The National Weather Service puts the chance of precipitation at 70% for the evening hours.

Summer is a busy time for lightning strikes, which kill about 20 people and injure many others across the United States each year, officials said.

The National Weather Service issued a weather alert at 8:08 p.m. EDT on Saturday for strong thunderstorms until 8:45 p.m. EDT for Alpena, Oscoda and Alcona counties.

Tampa residents will experience a mix of sun and thunderstorms with potentially dangerous heat indices reaching up to 106°F. The NWS advises precautions against heat-related illnesses.

By June 29, showers and thunderstorms are expected to form in parts of the Ohio Valley and the Mid-Atlantic, according to the National Weather Service.

A report was issued from the NWS Blacksburg VA on Saturday at 7:32 p.m. for strong thunderstorms until 8 p.m. for Wilkes and Yadkin counties.

Strong thunderstorms rumbled over eastern Montana this afternoon, but they'll exit the state before sunset. Montana and Wyoming will have isolated thunderstorms again on Sunday with more summer heat.