Memorial day weekend is coming to a close, the weekend as a whole wasnt too bad , definitely cold for the time of year and not very good beach weather but sunny skies for the 2nd half of the weekend with rising temperatures into the 60s and 70s , and a switch in the pattern is coming that will bring th first real stretch of summer heat this year so far between Wednesday and Sunday
We see in response to a strong trough coming onshore in the west, a large ridge is building over the east , first we will have to deal with a warm front coming north and thus showers / storms for Tuesday afternoon through Wednesday morning , once this warm front comes north of the region a prolonged southwest flow will become established
We see the warm front about to enter the area, which will bring a period of widespread showers and steady rain starting later this morning for western areas, spreading east through the day and impacting the area through most of the day , the heaviest rain with this looks to be in north and wets portions of the area, with lesser amounts the farther southeast you go , there will also be a chance for some embedded thunderstorms later tonight and earlier tomorrow morning as the warm and more unstable air mass begins to move in
Highs on Tuesday will be stuck in the mid to upper 60s for the most part, besides some lower to mid 70s possible around the Philadelphia metro and especially southwest towards Washington DC, lows tonight will fall into the 50s area wide, lower 50s NE PA upper 50s along the coast
For the most part tomorrow will clear out but with the warm front just north of the area and the warm humid air mass coming in there will be the chance for isolated afternoon thunderstorms, again best chance over northwestern areas like NW NJ/NE PA , and if these storms develop there is the chance some could be strong to even severe with heavy rain, gusty winds and frequent lightning , temperatures will range from lows in the lower 50s NE PA to upper 50s along the coast, and highs in the lower to mid 70s NE PA , upper 70s to mid 80s for the rest of the area with rising humidity
The good news is after this final disturbance comes through, sunny and tranquil weather is expected Thursday through Sunday with hot/humid conditions and a heat wave setting up for many , we will see a flow out of the west and southwest which will transport this hit humid air in, with highs each day ranging from the upper 80s to lower 90s for most of the area, even lower to mid 90s in the usual hot spots like the Philadelphia metro and parts of interior northeastern NJ with lower to mid 80s over higher elevations of NE PA , mid to upper 80s along the NJ coast and lower to mid 80s for the southern shore of Long Island , het indices will likely be in the mid to upper 90s for most of the area , not necessarily dangerous heat but very good beach weather, now if only this could have happened over the memorial day weekend!! Lows each night will be in the mid 50s to low 60s NE PA , mid 60s to around 70 along the coast each night.
We may begin to see a very slow-moving frontal system begin to impact the area later on Sunday which could last through much of next week with the chance for showers and thunderstorms each day as the front hits the large ridge over the western Atlantic/eastern US and is forced to crawl/stall out near by, the warm humid conditions will likely remain in place although not as warm as this week, still highs in the mid 70s to mid 80s with high levels of humidity until the front crosses through around midweek, when a cooler and drier air mass will briefly move in.