The current trends support expanding storms and significant rainfall across the region, according to CBS News Miami Chief Meteorologist Ivan Cabrera.

A flood advisory is now in effect for parts of Hamilton County, Ohio, and Boone, Kenton and Campbell counties in Kentucky along the Ohio River.

The National Weather Service forecasts a significant heat event starting Friday, with heat indexes potentially exceeding 100 degrees across much of New Jersey. Thunderstorms are likely to develop Friday afternoon and evening as the cold front approaches, with continued shower and storm chances through the weekend.

Central Pennsylvania is bracing for a significant heat wave that will peak Friday, with temperatures and heat index values expected to reach dangerous levels, potentially triggering a heat advisory and heat risk across the region.

Occasional rounds of showers and thunderstorms are expected from Tuesday night through Thursday which could bring some heavy rainfall to portions of the Weather First area.A complex of thunderstorms is expected to move northeast from the Central Plains into the region Tuesday night which may bring the chance of a shower or thunderstorm to portions

The National Weather Service said scattered thunderstorms could produce damaging winds and potentially severe hail.

The National Weather Service's Wilmington office confirmed a tornado in Northridge after a preliminary storm survey in the Springfield area today.

The National Weather Service issued a weather alert at 1:06 p.m. on Tuesday for strong thunderstorms until 1:45 p.m. for Tallapoosa, Chambers and Lee counties.