Today a warm front is going to cross through the region as a trough exits and more of a ridge moves eastward, with this warm front will come the threat for a isolated shower or storm , mostly over northwest areas but more importantly what will come with it is a potential heat wave at least some of the area (heat wave is defined as 3 or more consecutive days at or above 90 degrees) .The most likely areas to hit heat wave criteria will be SW NJ and SE PA
Today besides the isolated shower threat will feature variable clouds with highs in the mid 80s to low 90s for most along with increasing humidity , lows tonight will fall into the 60s for most with dry conditions expected
Tuesday as high pressure centers itself offshore and southwest winds increase, the heat will begin to peak with highs in the upper 80s to mid 90s and high humidity, can’t rule out a isolated thunderstorm especially for western sections and lows will only fall into the upper 60s to mid 70s
A similar forecast temperature wise is expected for Wednesday but unsettled weather will start to overtake the region by late Wednesday with a increasing chance of showers and storms
By Thursday a very slow moving cold front will interact with what’s expected to become tropical storm Arthur , abundant tropical moisture is expected and will bring widespread thunderstorms through Thursday and Friday, very heavy rains are becoming more likely with localized flooding possible, the main tropical system will likely steer east of the region but it’s associated moisture could bring in a lot of rainfall for Independence Day.