Bethlehem Live Weather Camera

A cold front colliding with a surge of tropical moisture is expected to produce widespread showers and storms, triggering a flood watch for the Lehigh Valley and much of eastern Pennsylvania.

Moisture from Tropical Depression Chantal will bring the chance for scattered showers and downpours to the region, kicking off a stretch of unsettled weather with daily chances for storms throughout the week.

After Monday brought rounds of thunderstorms and heavy rain, more severe weather is expected to target the region on Tuesday, forecasters say.

The heat this week was one of the hottest stretches of weather ever recorded in parts of the Mid-Atlantic and Northeast.

After days of sweltering heat, the Lehigh Valley can finally expect a break as a cold front brings modest relief and cooler temperatures, forecasters say.

On Tuesday afternoon, Lehigh Valley International Airport recorded temperatures that tied the record heat set in Allentown over a century ago on June 24.

No climate site in the region reached 100 degrees on Monday, but the suffocating heat and humidity was still record-setting across the Mid-Atlantic region.

PJM Interconnection, the regional grid operator headquartered in Valley Forge, issued a maximum generation alert and load management alert for Monday.

Allentown hasn't had a 100-degree day since July 2011. The forecast high on Tuesday is now 100 degrees.

With temperatures in the low 90s and heat indices spikes toward 100, showers and thunderstorms are expected in the area by early evening.

Severe storms, dangerous heat and rising humidity are in the forecast for the Lehigh Valley. Here's what to expect this week and into next.

As the summer solstice arrives this week, the long-range outlook depicts a pattern shift that will go from seasonal to sizzler in a hurry, forecasters warn.