Good Wednesday morning to you, South Jersey, and Happy Hump Day! So stop me if you've hear this one: Mostly sunny, hot, and humid with highs in the mid 90s on the mainland and upper 80s on the coast. Sound familiar, right? That's has been the forecast in South Jersey, just about word for word, for the last two days. Unfortunately, for those of you who aren't a fan of this kind of weather, you're going to hear it again. High pressure situated to the west will continue to stand still over the Ohio River Valley and Midwest regions. Thankfully, though, a change begins to occur. This core of high pressure will begin to decay and drift to the south over the next day or so, and that will be the catalyst to a pattern change in our weather. However, we have to get there first, which means another day of mid 90s heat on the mainland (Though dew points will be in the upper 60s today...similar to yesterday...so it isn't as oppressively hot) and upper 80s "relief" on the beach. Water temperatures will be in the low 70s today, giving beach goers a great chance to cool off. To anyone who can't make it there, please be sure to do all you can to stay cool and hydrated today. We'll cool off just a bit tonight with mostly clear skies and a calm south wind at 5 to 10mph. Lows will drop into the low 70s...not bad, but still about five degrees above our average of 67 for this time of year.
As that area of high pressure decays through the end of the week, that will allow for a few things to happen. First, a cold front currently located in Ontario and Quebec, Canada, will begin a slow descent into the Northeast and Mid-Atlantic. As it does, the pre-frontal air mass will also begin to arrive in our backyard. Usually, the air ahead of a cold front is warmer (with a southerly flow at the surface and aloft) and more unstable, and this time around is no exception. A VERY isolated thunderstorm is possible later in the day on Thursday and Friday, but otherwise we should remain mostly sunny with muggy conditions returning as well. Highs for both days will reach the mid 90s on the mainland and upper 80s on the beaches. The best chance for thunderstorms (and a few stronger ones at that) arrives on Saturday and possibly into Saturday night as well. That cold front I mentioned earlier will finally arrive and pass through the area. I do think we'll squeeze one more 90 degree day on the mainland before we keep a close eye on the threat for stronger storms. There is still time to iron out the timing details, and be sure to know that Dan, Sydney, and I will have you covered. Behind this cold front, cooler and more comfortable air is expected to filter downward. A few leftover showers and storms are possible on Sunday, but the start of the next work week looks partly sunny and pleasant from here. Highs for all three days will be in the mid to upper 80s west of the GSP and low 80s on the boardwalks.
Stay cool out there, and have a great day!
- Meteorologist Adam Rutt