Jared Smith founded @chswx on Twitter in 2008 as an experiment in disseminating weather data through social media. In the ensuing decade-and-a-half, @chswx has provided live coverage of tropical cyclones, tornadoes, severe weather, and even a couple bouts of winter weather to the good people of Charleston, SC.
The week ahead will be unsettled at times as a ridge of high pressure to the west retreats, allowing mid-level impulses and another cold front to drive into the area to keep showers and storms in the forecast.
Confidence is increasing in showers and thunderstorms affecting the area Sunday afternoon and especially as we get into the evening hours. We’ll start Sunday on a warm note, generally in the mid-60s, before warming quickly well into the 80s by midday. Scattered showers and storms should begin to kick off as the seabreeze develops and moves inland early in the afternoon, and coverage should increase as a front approaches the area from the northeast as we head into the late afternoon and evening. Severe weather isn’t anticipated, but lightning makes every thunderstorm dangerous, so be sure to move indoors if thunderstorms threaten. Winds around a ridge of high pressure to our west will also bring storms toward the coast, as well, so be alert if the beach is in your plans. Overall, it’s not a day to cancel outdoor plans, but have a solid indoor plan B in case storms come by.
We will turn warmer this Mother’s Day weekend as high pressure continues to slip offshore and some ridging builds in aloft. Saturday looks to be the pick day of the weekend, with the day starting in the mid-60s and highs topping out in the mid-80s in the afternoon. A stray shower or thunderstorm is possible Saturday afternoon, but many of us should stay dry.
Afternoon thunderstorm chances tick up for Sunday as a front approaches the area. Highs top out in the mid-to-upper 80s after another start in the mid-60s. Depending on when storms can get going, a few 90° readings wouldn’t be out of the question, particularly further inland. No organized severe weather is expected, but a storm with a few strong wind gusts can’t be totally discounted especially where boundaries interact. Storm motions could bring activity toward the coast, too, so be alert to changing weather if your Mother’s Day plans include the beaches.
We’re turning warmer to close out the work week and head into the weekend as high pressure shifts offshore and winds go more southerly. Friday tops out around 84° with a low in the mid-60s, while Saturday heads to the upper 80s and Sunday tops out near 90° as ridging builds in aloft.
We look to stay rain-free Friday, but a storm or two will be possible Saturday afternoon with slightly better storm chances Sunday afternoon into the evening hours. Some spots may see some brief downpours and some gusty winds, but it’s not looking terribly favorable for organized severe weather. That being said, storm motions will be coastward, and so if you head to the beaches or are otherwise out and about, keep an eye to the sky and be ready to head indoors if weather conditions take a turn. Remember, when thunder roars, go indoors!
Not much to write home about weather-wise on Thursday. We’ll see a mix of clouds and sun throughout the day and continued comfortable temperatures; lows start in the low 60s with highs topping out in the low 80s in the afternoon, with an easterly breeze and the expected broken cloud cover to be a contributor to those temperatures. All in all, no hazards are expected and it should be a fine day.
As expected, Monday didn’t last long in the “warmest day of 2023” category. We got to 94° this afternoon, the first 90° reading of the year. We missed the record high by one degree and a late-90s boy band by four. After that, the first really good round of summer thunderstorms rolled through the area, producing some impressive wind gusts particularly around the harbor, including a 75 MPH gust at the tide gauge near Waterfront Park! All in all, it’s been an eventful day of weather. Thankfully, we turn quieter and a little cooler for the second half of the work week as a cold front moves by and high pressure builds in from the north.
Monday was the warmest day of 2023 so far with a high of 89°, but that distinction will be short-lived as the first 90°+ temperatures of the season look likely on Tuesday ahead of a cold front. Mix in some humidity, and it’ll feel a little more like the mid-90s in the peak of afternoon heating, it looks like.
We’ll get a good summer preview to start and finish the upcoming week, with a lull in the middle with slightly cooler high pressure building in behind a front for mid-week.
This weekend, while not completely clear of rain chances, doesn’t look half bad. Guidance trends toward a drier weekend have continued today, and it looks like we get just a few showers on Saturday and then partly cloudy skies on Sunday. High pressure moving offshore will pump in warmer and more moist air, leading to the shower potential Saturday. Highs top out only in the upper 70s, though, due to a decent amount of cloud cover throughout the day. We’ll see that cloud cover begin to break heading into the evening, though, and it should be a fairly nice end of the day.
Partly cloudy skies will be the rule Sunday. We’ll start the day in the low-to-mid-60s — much warmer than we’ve felt recently — and highs will top out in the low 80s in the afternoon. Dewpoints will be higher than they have been, but it’ll still be fairly comfortable at peak heating with relative humidity values below 50%. Overall, not the best weekend we’ve had, but not the worst, either. Even still, though, it looks likely that we will continue the streak of weekends with measurable rainfall dating back to early February.
Allow me to revise the list of life’s inevitabilities as of 2023: Death, taxes, and shower chances over the weekend. A slow-moving front will be the latest culprit, keeping isolated to scattered showers on our mind each day this weekend. (It’s worth noting, though, that a total washout is not expected!)