Philadelphia is bracing for a round of wet, and potentially dangerous, weather on Monday with heavy downpours and strong winds.

Severe storms threaten the Philadelphia region on Monday, with the potential for heavy rain, damaging winds, and tornadoes. The NBC10 First Alert Weather Team breaks it all down: Storm Overview Heavy snow across the Rocky Mountains on Saturday is part of what will turn into a powerful winter storm later this weekend.

A mild, mostly quiet weekend gives way to the possibility of severe storms Monday in the Philadelphia area.

A Tornado Watch for the Philadelphia region has expired, but the threat of damaging winds continues Monday evening.

The Northeast has seen wild temperature swings — from record 80s one day to snow showers the next. Scientists say weather patterns like cold fronts and climate factors help explain it.