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Author: Jared Smith

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.

Memorial Day Weekend: Starting quiet and seasonable, but turning stormy

/ May 23, 2025 at 7:37 PM

Memorial Day Weekend will get off to a benign start, but a stalling front in our neck of the woods will turn things unsettled beginning Sunday.

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Friday & Memorial Day Weekend: Seasonable temperatures to start, but warming and storming resume Sunday

/ May 22, 2025 at 6:22 PM

Generally quiet weather featuring plenty of sunshine and seasonable temperatures will bring us into Memorial Day Weekend as high pressure builds in at the surface for a couple days. Friday will start in the low-to-mid-60s and warm to the mid-80s in the afternoon with low humidity. It’ll still be a bit breezy, but not to the extent as we saw on Thursday.

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Thursday: Front takes the edge off the heat

/ May 21, 2025 at 10:47 PM

A reprieve from the early-season stretch of 90° temperatures commences Thursday in the wake of a cold front. We’ll start the day noticeably cooler and drier than previous days, with lows bottoming out in the mid-60s as opposed to the low 70s. Highs will still run a little warmer than normal, but upper 80s will still represent cooler highs, especially on the heels of highs in the low 90s the past few days. Despite the warmer-than-normal temperatures, the lower dewpoints in the mid-50s will send relative humidity values down to around 30% or so during the day, so at least any sweat will have a chance to do its thing to cool you off.

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Rest of the work week: A few storms possible Wednesday, then drying out and turning a little cooler

/ May 20, 2025 at 9:45 PM

The unseasonable warmth of the past week and change will draw to a close on Wednesday as a cold front approaches the area. We’ll start Wednesday in the mid-70s, warming to the mid-90s in the afternoon. There’s a chance for a storm or two ahead of the front, but it’s conceivable that many of us may not see any rain at all with this frontal passage. If a storm or two can get going, it could turn strong to severe, but the chances are very low.

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Tuesday: Warm front retreats northward, keeping us toasty

/ May 19, 2025 at 10:23 PM

Expect less in the way of cloud cover on Tuesday as the front that helped focus some shower and thunderstorm activity across the area on Monday meanders north and high pressure builds in aloft with plenty of dry, sinking air to be found. We’ll stay on the toasty side of normal for mid-May, with lows in the low 70s warming to the low-to-mid-90s in the afternoon. Dewpoints aren’t terribly out of control, thankfully, so heat indices won’t be too much of a factor, only running about 2-3° or so above the air temperature. That said, it’s still quite warm for this point in the year — the normal high for May 20 is 84°.

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The week ahead: A reprieve from the heat is coming

/ May 18, 2025 at 11:09 PM

The week ahead starts with a continuation of the abnormally warm temperatures we’ve been feeling for the better part of the past week, though some relief is in sight as a cold front brings cooler and drier air to close out the week and head into Memorial Day Weekend.

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Weekend forecast: Remaining hot with low storm chances

/ May 16, 2025 at 7:36 PM

Hot weather continues as we head into the weekend with only a slight chance at some thunderstorm-induced relief.

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Friday & the weekend: Abnormally warm temperatures expected

/ May 15, 2025 at 11:52 PM

The main weather story for Friday and the weekend will be the unusual midsummer-like heat, especially Friday and Saturday. We may break a record high on Friday — the record high is 94° set in 1941 — as temperatures head into the mid-90s under partly cloudy to mostly sunny skies. Heat indices will peak around 100° or so — not into heat advisory territory but still on the high side for mid-May.

Partly cloudy skies continue into Saturday, though a stalling front could pop a stray storm or two especially further north. Otherwise, expect another quiet and very warm day, with highs in the mid-90s once again expected after a low-70s start. The front meanders around the area on Sunday, keeping partly cloudy skies in the forecast with a stray storm not out of the question. Temperatures should run a touch “cooler” — and by “cooler” I mean around 90° as opposed to 95°.

The 90s stick around well into next week before the next front approaches by mid-week with the next mentionable shower and thunderstorm chances.

Thursday: First 90s of the year expected

/ May 14, 2025 at 7:41 PM

Wednesday was the warmest day thus far of 2025, with a high of 89° recorded at the airport. This distinction will be short-lived as high pressure continues to build in on Thursday, sending us to what should be our first 90° readings of the year in the afternoon. Mostly sunny skies are expected to prevail, so be sure to apply sunscreen if you are headed outside for a little pre-summer preview.

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Rest of the work week: One more day of storms, then the heat builds in

/ May 13, 2025 at 10:56 PM

We have one more day of scattered storms in store as low pressure aloft opens up into a trough and interacts with the seabreeze in the afternoon. Once again, we get off to a very mild start with lows in the upper 60s expected. Temperatures will head to the mid-80s before scattered storms initiate along and ahead of the seabreeze. Some brief downpours will be possible, but not expecting a repeat of what we saw this past weekend, either.

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