Tuesday’s forecast: Warm, a bit muggy, afternoon storms

/ September 11, 2023 at 9:50 PM

Tuesday’s forecast will once again feature a seasonably warm and humid airmass that’ll give rise to some showers and thunderstorms in the afternoon, generally along and ahead of the seabreeze. We start the day in the low-to-mid-70s. Some fog may be around as we start the day, so be ready for possible visibility reductions particularly as you get further inland. Highs top out around 90° in the afternoon before a few storms fire, which will cool things off for some of us. A couple strong storms are possible, but don’t expect a widespread severe weather issue.

Rest of the work week: Stormy Wednesday ahead of a cold front

A cold front approaches the area on Wednesday and brings with it a fairly decent chance of showers and thunderstorms across the area. A decent mix of instability and shear could bring a slightly better chance of severe thunderstorms to the area in the afternoon and evening hours, so that’ll be worth watching. Otherwise, expect highs to top out in the upper 80s for one more day before the front gets through early Thursday.

Some lingering moisture will keep some storm chances around for Thursday, but we’ll begin to feel the effects of the front with the high temperature topping out in the mid-80s and the dewpoints running about 6-8° cooler. The real push of dry air takes place on Friday. After starting the day in the mid-60s, temperatures will warm to the low 80s in the afternoon with dewpoints falling into the mid-50s, making for a really comfortably warm day under mostly sunny skies. We keep this going heading into the weekend, too, with mid-80s highs, plenty of sunshine, and comfortable air through Sunday.

Tropics: Swell from Lee arrives, area in the Atlantic is up to 70%

The tropics remain busy, with Hurricane Lee and newly-upgraded Hurricane Margot both in the Atlantic. Swell from Lee is arriving along the Southeast coast, with a high risk for rip currents at area beaches tomorrow. Lee could become an issue for the northeastern US later this week into the weekend as the storm becomes larger (but also weaker, maximum winds-wise), but there’s still a lot of uncertainty. What is certain is that we will not see any direct impacts from Lee.

There are two areas the Hurricane Center is watching in the Atlantic for possible development. The first, a wave south of the Cabo Verde Islands, has a 70% (or high) chance to develop over the next week as it moves into the central Atlantic. The second, southwest of the Cabo Verde Islands, only has about a 10% chance to develop. All in all, it could be worse out there — and, thankfully, there are no imminent threats to the Lowcountry.

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