The long holiday weekend is underway, and while it will have the feel of summer with humidity up and warmer than average temperatures, we will have some wet weather at times in the form of showers and thunderstorms (including the possibility of some localized flooding downpours any day, and perhaps a more widespread risk Labor Day) that will send some dashing indoors over the next three days.
It will certainly not be a washout Saturday with intervals of sunshine. But as we head into the afternoon, a front with a couple of waves of low pressure strung out along its length from Maine to Lake Erie to southeast Iowa will have enough of a southward push and combine with some shortwave energy as seen on the 500 mb charts to generate at spotty showers and thunderstorms. We think beginning say 3 or 4 p.m. Saturday afternoon we can start to see isolated cells developing closer to the city itself and the threat to get wet and drenched by a shower or storm will then continue at least through the evening. It looks like the bulk of this first energy will push away to the east around midnight and although there can be a random shower or thunderstorm overnight, the activity then will generally be sparse of the timing of that short wave disturbance holds. For those planning to head to the beaches, we could have those showers and isolated storms showing up over Long Island Saturday afternoon. The farther south you go into central and southern New Jersey and to the Delaware and Maryland Beaches, the more likely it will stay dry through at least late in the afternoon with more in the way of sunshine.
This first front is slated to stay off to our north and west Saturday night and Sunday.