Blog

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.

Friday & the weekend: Much better this weekend after a Friday front

/ May 29, 2025 at 9:24 PM

A respite from the rain is coming just in time for the weekend (and it’ll be a beaut), but we’ve got one more day with storms — and the risk for a few severe storms, at that — coming up with a cold front on Friday.

Read more »

Thursday: Afternoon storms return

/ May 28, 2025 at 8:32 PM

After a balmy start in the low 70s that could feature some patches of fog, temperatures will warm to near 90° in the afternoon before scattered to numerous showers and thunderstorms kick off courtesy of the seabreeze as well as some energy aloft. Heavy rain will be possible with these thunderstorms, and a few stronger storms with strong winds will be possible as well, with some of the high-res models pointing to clusters of storms developing and moving from southwest to northeast across the Lowcountry late in the day. Stay alert for rapidly changing conditions, particularly during the evening commute.

Read more »

Rest of the work week: Active pattern continues

/ May 27, 2025 at 8:10 PM

The active pattern that’s kept things on the stormy side the past few days will continue until a front sweeps through the area late Friday, clearing things up a bit for the weekend. For now, though, we’re still going to be dodging scattered to numerous showers and thunderstorms each afternoon.

Read more »

Rest of the work week: Staying stormy

/ May 26, 2025 at 9:46 PM

The weather will remain unsettled for the rest of this last work week of May with plenty of warm and humid air for various surface boundaries and mid-level impulses to stir things up, especially in the afternoons and evenings.

Read more »

Memorial Day: Storms continue, especially late afternoon into the evening

/ May 25, 2025 at 11:58 PM

While we probably won’t get off to as stormy of a start as we did on Sunday, expect another round of showers and storms to kick off by afternoon on Memorial Day. We’ll start the day in the mid-to-upper 60s, warming to the mid-to-upper 80s in the afternoon before thunderstorms once again kick off with a stalled front in the vicinity. The risk for severe weather remains on the low side, but heavy rain and lightning will still be enough to disrupt outdoor plans at times. Storm motions will be toward the coast as well, so be especially alert for thunderstorms at the beaches. Remember, all thunderstorms are dangerous due to the lightning they produce. If you see lightning or hear thunder, you’re close enough to be struck, and should move inside.

We’ll also want to pay close attention to the flooding threat not only from training thunderstorms but also the evening high tide, which should peak between 7.1-7.3’ MLLW around 8:16 PM. If thunderstorms are in the area around that time (as some models seem to suggest), this could indicate a greater flooding threat for vulnerable locations in downtown Charleston. This will certainly be something to watch as the day progresses. Stay alert for possible flood advisories from the National Weather Service.

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.

Read more »

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.

Read more »

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.

Read more »

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.

Read more »

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°.

Read more »