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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: Frosty start for some, but turning warmer

/ November 2, 2023 at 8:47 PM

We’ll get Friday off to a slightly frosty start in some parts away from the coast as lows dip into the 30s once again with a little bit more moisture to work with and a little less in the way of wind (though wind chills could still dip into the low 30s). A Frost Advisory is in effect for inland Berkeley and Dorchester for Friday morning where the risk for frost will be greatest, so ensure you’ve got sensitive plants covered just in case. From there, though, we’ll warm into the upper 60s in the afternoon (and 70° might not be totally out of the question, either) under mostly sunny skies.

The warming trend continues Saturday. We start the day in the mid-to-upper-40s — almost ten degrees warmer than Friday. Highs should get into the low 70s under mostly sunny skies — a very nice day to get outside, it looks like.

We turn even a little warmer for Sunday. Expect Sunday to start out around 50-51° or so, warming to the mid-70s in the afternoon. A few clouds will dot the skies from time to time, but it’ll be another day of brilliant sunshine.

We’ll be getting that sunshine in an hour earlier than Saturday, though, as Daylight Saving Time ends at 2am Sunday, sending us back into Eastern Standard Time (UTC-5). The sun will rise around 6:40am, but will set just shy of 5:30pm. Be sure to set clocks needing manual changes back an hour Saturday night. It’s a good time to change batteries in your weather radios and smoke detectors as well.

Thursday’s forecast: Coldest start since March; freeze warnings well inland

/ November 1, 2023 at 9:33 PM

Thursday gets off to the coldest start since March with lows expected in the mid-30s across much of the metro area. Further inland and in more sheltered locations, it’s quite possible that we’re going to see temperatures fall below freezing. A Freeze Warning is in effect for inland Berkeley and Dorchester for Thursday morning; be sure you’re protecting plants and pets. Add in winds around 5-10 MPH, and we’re talking wind chills in the 20s in many spots. Dress appropriately as you head out tomorrow morning!

From there, temperatures will head to the low 60s in the afternoon despite mostly sunny skies. It’ll ultimately be yet another sweater-worthy day across the area with a continued north to northeasterly breeze.

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Rest of the work week: Sweater weather arrives

/ October 31, 2023 at 7:41 PM

Legitimate sweater weather arrives Wednesday as the coldest air of the season thus far moves into the area. We start the day in the mid-40s but don’t expect temperatures to climb too much beyond the mid-50s despite lots of sunshine. In fact, we may at least tie a different kind of record high on Wednesday — the record low maximum temperature for November 1, which was also 55° last set in 2014.

Thursday looks to get off to the coldest start since early March, and a continued north to northeasterly breeze will drive the wind chill down to around or even below freezing. Dress accordingly in the morning! From there, highs will run a few degrees warmer than they did on Wednesday, but that’s not saying much as we’ll still see temperatures struggle to reach 60° despite unencumbered insolation. The record low maximum of 58° on Thursday is probably safe, but it’ll be close.

The airmass starts to moderate on Friday, though, as warmer air begins to work back into the area. We start Friday in the low 40s before warming to the upper 60s to around 70° in the afternoon under mostly sunny skies. The warming trend continues into the weekend, too, as we head back to the 70s each afternoon under partly cloudy to mostly sunny skies.

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Tuesday: Cold front arrives with increasing clouds and maybe a shower

/ October 30, 2023 at 10:19 PM

Changes are on the way on Halloween as a strong cold front moves across the area later in the day, bringing an uptick in cloud cover, maybe a shower or two, and a surge of the coldest air so far this season to start November. We start Tuesday in the upper 50s to around 60° with just a few clouds to start. From there, expect cloud cover to gradually thicken as the front gets closer. We should see it get through sometime mid-afternoon into the early evening; you’ll notice it when winds shift around more to the north.

Trick-or-treaters will want a light jacket as temperatures cool into the 50s throughout the evening. As mentioned, a shower or two will be possible, but the risk is quite low.

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The week ahead: Big shot of cool air for mid-week; very little, if any, rain in sight

/ October 29, 2023 at 9:23 PM

The week ahead will feature the strongest cold snap of the season thus far sandwiched between a warm start and a warm finish. It’s a classic “shorts then sweaters” week of fall weather in the Lowcountry as a strong front moves by late on Halloween.

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Weekend forecast: Unseasonably warm, with record warmth possible Sunday

/ October 27, 2023 at 7:43 PM

This will be an unseasonably warm final weekend of October across the Lowcountry as temperatures will bear more resemblance to mid-May. Expect highs in the mid-80s each afternoon with lows around 60° to start each day. Sunday’s forecast high of 85° would, if it came to pass, tie the record high for October 29 set in 1946. We’ll do this courtesy of stacked high pressure remaining in control for a few more days; dry air aloft will keep cloud cover at a minimum, and it’ll be a good weekend for sunshine overall.

No good weather deed goes unpunished, though: There will be a high risk of rip currents at the beaches in case you are wanting to wade into the water, and morning high tides will be high enough to cause some minor salt water flooding as well. Keep an ear out for Coastal Flood Advisories from the National Weather Service.

A strong front coming by around Halloween will flip the script on temperatures. We’ll go from 83° on Monday to 77° on Tuesday before highs only top out around 60° on Wednesday and Thursday. It’s probably safe at this point to go ahead with a Sweater Weather Watch for next week!

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Friday & the weekend: Warm with plenty of sun

/ October 26, 2023 at 7:40 PM

Warm weather continues for Friday and the weekend, feeling a lot more like September than late October. Temperatures will continue to run in the low 80s each afternoon after starts in the low 60s each day. Unsurprisingly, these temperatures run well above climatology. At this point in October, a normal day starts in the low 50s, and we will run well above that through the end of the month, it looks like. Our high temperatures will come in about 8-9° or so above normal each day; we should be in the mid-70s. While the record highs for Friday and Saturday seem out of reach (87° and 86°, respectively), Sunday’s forecast high of 83° comes within a couple degrees of the daily record high of 85° set in 1946.

Fall fans, do not fret, though: A strong cold front appears timed for Halloween. This front will knock temperatures back to near normal for Tuesday, followed by below-normal high temperatures as we start November (think mid-60s vs. mid-70s).

Thursday: Still warm and partly cloudy

/ October 25, 2023 at 9:56 PM

Rinse and repeat: More quiet and warm weather is on tap for Thursday (and beyond!) High pressure remains in control, and that’ll keep things rain-free and rather warm for late October. We start the day in the low 60s (for reference, the normal low for October 26 is 54°) and warm to around 80° in the afternoon. Much like Wednesday, we’ll see a few clouds amongst otherwise blue skies.

The only fly in the ointment will be the potential for some minor coastal flooding with the Thursday evening high tide. Water levels should peak between 7-7.2′ in the harbor, and this’ll cause some salt water to spill onto the typical trouble spots roughly an hour or two on either side of the 6:49 PM high tide. We’ll probably land a Coastal Flood Advisory during Thursday evening’s commute, so be ready to route around a little salt water especially around the Citadel and MUSC.

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Rest of the work week: Seasonably warm

/ October 24, 2023 at 9:16 PM

The rest of the work week will be seasonably warm as high pressure remains in firm control of our weather. We’ll start Wednesday noticeably warmer than Tuesday with lows in the upper 50s as opposed to the upper 40s. From there, temperatures will warm to near 80° under partly cloudy to mostly sunny skies. We start Thursday even warmer, with low 60s forecast — several degrees above normal for this point in the year. Temperatures top out around 80° with a mix of sun and clouds. As for Friday, copy and paste — pretty much the same story as Thursday. We keep warmth heading into the weekend and to start next week, though we should see a cooldown in time for Halloween.

High tides on Wednesday will get close to coastal flood criteria and could yet require a Coastal Flood Advisory or two if the departures tick up just a little more. We’ll flirt with minor coastal flood criteria at times of high tide into the weekend, so keep an ear out for possible Coastal Flood Advisories from the National Weather Service.

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Tuesday: Chilly start, but a warming trend begins

/ October 23, 2023 at 9:51 PM

We get off to a fairly chilly start on Tuesday as lows bottom out in the upper 40s thanks to clear skies and light winds. This will be the low-water mark (so to speak) for temperatures, though, as we head into the rest of the week. Highs on Tuesday top out in the mid-70s once again, perhaps a degree or two warmer than we saw on Monday. All in all, another nice October day.

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