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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.

Friday & the weekend: Comfortable and quiet while trending warmer

/ October 16, 2025 at 5:33 PM

High pressure remains the main weather player in our neck of the woods, keeping things generally quiet and seasonable for Friday and the weekend. You may need a light hoodie or somesuch Friday morning as lows bottom out to the low 50s in the metro and perhaps into the 40s further inland and in more rural locations. Highs Friday peak in the low 70s with plenty of sunshine expected.

High pressure starts to move a bit more overhead Saturday and then starts to slip offshore on Sunday. This will lead to gradually warming temperatures through the weekend; mid-70s Saturday while we should touch 80° on Sunday. Generally speaking, mostly sunny skies will prevail, though there could be an uptick in cloud cover later Sunday as a front approaches. A stray shower will be possible overnight Sunday into early Monday morning, but otherwise, we look to stay dry well into next week.

Thursday: Another gorgeous day

/ October 15, 2025 at 7:00 PM

Mother Nature’s apology for the nor’easter continues Thursday with another day of comfortable temperatures and plenty of sunshine expected. A weak, dry front moves by early in the day, and so we should see temperatures start and peak a little cooler than we did on Wednesday. Expect lows in the mid-to-upper 50s warming to the mid-70s under mostly sunny skies. Winds will swing around to the northeast and pick up a little bit, and this could drive some minor coastal flooding with the early evening high tide cycle. A Coastal Flood Advisory is possible, but impacts beyond the most vulnerable locations downtown will be minimal.

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Rest of the work week: Pleasant fall weather continues

/ October 14, 2025 at 9:36 PM

Pleasant weather continues for the rest of the work week as high pressure remains in control. A dry front will move through overnight Wednesday into early Thursday, bringing along a reinforcing shot of cooler and drier air that will make for a crisp start on Friday.

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The week ahead: Much more sun and pleasant temperatures

/ October 12, 2025 at 10:07 PM

The nor’easter that has made for several soggy days across the metro will finally be pulling away on Monday, yielding a beautiful week of weather across the area with plenty of sun and comfortable temperatures.

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Weekend forecast: Breezy with showers Saturday, some slow improvement Sunday

/ October 10, 2025 at 11:58 PM

The nor’easter that drove the highest tide of the year on Friday will continue to affect our weather Saturday and to a lesser degree on Sunday. Showers will continue overnight through much of the day on Saturday, and gusts will continue to head into the 25-30 MPH range especially near the coast and on bridges and overpasses. Temperatures remain on the cool side as well, with lows in the low 60s warming to just about 70° at best in the afternoon.

We will also be contending with the risk for moderate coastal flooding once again with the midday high tide. A Coastal Flood Advisory is in effect from 10 AM-2 PM as a result. While this tide will certainly be less severe than we saw on Friday, it’ll still be high enough to close plenty of roads downtown right smack in the middle of the day. Be ready to reroute around road closures as a result.

We’ll see the nor’easter gradually pull away Sunday, though some showers look to persist. Temperatures will still be cooler than normal, with lows in the low 60s warming to the low-to-mid-70s in the afternoon with a little bit more sun breaking through. Winds will be backing off, and this will help mitigate a more serious coastal flooding threat during the day, though we should still see minor to moderate flooding with the early afternoon high tide that could close a few roads.

This will lead into a quieter and sunnier week ahead with high pressure in control. Humidity will be low and temperatures will be comfortably warm, with highs in the upper 70s to around 80° each afternoon.

Friday & the weekend: Wind and rain with major coastal flooding Friday & Saturday

/ October 9, 2025 at 8:32 PM

A non-tropical storm system spinning up offshore will bring wind and rain to the area along with major coastal flooding with the midday high tides Friday and Saturday. We’ll start to see some improvements Sunday, thankfully.

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Thursday: Turning much cooler; first round of several rounds of major coastal flooding mid-morning

/ October 8, 2025 at 8:49 PM

A cold front will pass through overnight, bringing with it a chance for showers and maybe even some thunder as it moves by. Behind that front will be a significant airmass change as high pressure builds southwestward into the area. We’ll wake up to lows in the mid-60s, with temperatures climbing just to the mid-70s under mostly cloudy skies. It’s going to be quite breezy, with northeasterly winds gusting 30-35 MPH at times, especially near the coast.

The strong northeasterly winds will drive water levels in the harbor quite high on top of already high astronomical tides, especially during the day on Thursday (and for the next several days). High tide will peak around 10:06 AM around 8-8.2′ MLLW, which is comfortably in the major flooding threshold. A Coastal Flood Watch is in effect and will likely be upgraded to a warning if trends continue overnight. Be ready for numerous road closures in downtown Charleston as well as salt water impingement onto roads on James and Johns Islands as well as Daniel Island. Moderate coastal flooding is expected with the evening high tide as well, with water levels peaking around 7.5-7.7 MLLW between 9 PM and midnight. This should be high enough for another round of road closures downtown, so be mindful if your travels take you there Thursday night.

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Rest of the work week: One more warm day, then cooling sharply as coastal flood threat escalates

/ October 7, 2025 at 11:43 PM

Occasionally unsettled and breezy conditions will continue for the next few days as a front moves through, high pressure builds in, and low pressure spins up offshore.

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Tuesday: Another warm day; seasonable warmth continues

/ October 6, 2025 at 8:21 PM

We stay warm on Tuesday with another day of high pressure at the surface and aloft driving temperatures above normal across the area. We’ll start the day near 70°, warming to the mid-80s in the afternoon under partly cloudy to mostly sunny skies. A few showers appear possible near the coast during the morning and early afternoon hours, but otherwise, many of us should get a rain-free day in.

We will need to continue to monitor the risk for coastal flooding around times of high tide, especially during the morning, with minor to moderate coastal flooding likely between 6-11 AM. (High tide peaks around 8:23 AM.) When we get into moderate flood stage, we start to run into more widespread road closures downtown, and given the timing, commute impacts appear likely. Allow extra time to reach your destination if downtown is where you’re headed in the morning. Another round of minor coastal flooding will be possible generally between 7-11 PM, which may yet close a few vulnerable roads but should not get as high as the morning high tide.

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The week ahead: Warm start, but another shot of fall for the weekend

/ October 5, 2025 at 11:50 PM

Warm temperatures will continue for the first half of the week before a cold front knocks temperatures down below normal starting Thursday. Shower chances will be with us for much of the week, though, and we’ll be dealing with coastal flooding as well.

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