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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.

Showery Thursday leads into an unsettled start to the weekend before a freeze on Sunday

/ March 9, 2022 at 6:17 PM

More needed rain will steadily fill in overnight as a cold front gets through the area and promptly stalls out nearby. We’ll see showers continue for much of Thursday before they taper off as the front gets shoved a little further offshore. Temperatures will certainly run much cooler — lows in the upper 50s will give way to highs only in the mid-60s in the afternoon.

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A few strong to severe storms possible Wednesday afternoon

/ March 8, 2022 at 6:55 PM

A warm front lifts north of us tonight, putting us squarely in the warm sector of a storm system that will approach the area tomorrow before stalling out nearby Thursday. While we reside in that warm sector tomorrow, good turning of winds with height and decent instability will promote a risk for thunderstorms, a few of which could become severe. The main severe weather risk will be from damaging wind gusts, but if a supercell or two can get going, that will come along with an elevated risk for hail or even a tornado. Suffice to say, you’ll want to stay close to reliable and redundant sources of severe weather information tomorrow afternoon into the evening. NOAA Weather Radio is a great way to get alerts, and if it is enabled to do so, your phone can automatically alert you to tornado warnings, no app required.

Due to the risk of severe weather, the statewide tornado drill originally scheduled for Wednesday morning as part of South Carolina Severe Weather and Flood Safety Week has been moved to Friday at 9am.

We will have a lull in the severe weather threat on Thursday, but expect plenty of showers and even a few thunderstorms to linger as the front remains stalled out close by. Another risk of severe weather is possible late Friday into early Saturday morning as another front approaches the area. This front will bring cold high pressure for later Saturday into Sunday, with the risk of a freeze on Sunday morning.

Stay tuned to forecast updates tomorrow!

Tuesday: Mostly cloudy, a little cooler, with scattered showers developing

/ March 7, 2022 at 6:07 PM

Cloud cover and eventually shower chances return to the forecast tomorrow as a cold front edges closer to the area. The clouds will help keep the morning rather balmy — 64° is the forecast low, just a few degrees below the normal high for this point in the year. Highs will head into the mid-to-upper 70s, but won’t quite be able to reach 80° given the increase in cloud cover and the development of scattered showers in the afternoon. It won’t rain all afternoon, but be ready for that potential especially during the evening commute.

Rain chances continue to ramp up this week as the cold front stalls across the area, with more widespread rain expected to develop Wednesday into Thursday. Rain stays in the forecast through Saturday until a cold front shifts offshore, shutting off precipitation and ushering in some very cold air — perhaps reaching freezing — for Sunday away from the immediate coast.

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The week ahead: Turning unsettled with a big cooldown for next weekend

/ March 6, 2022 at 6:16 PM

A solid pollen rinse is in the offing this week as a cold front is forecast to stall over the area, keeping showers and thunderstorms in the area for much of the upcoming work week.

First, though, we have one more day of great weather teed up for Monday. It’ll be a good day to catch a meal outside at some point during the day with highs once again topping out in the low 80s under partly cloudy to mostly sunny skies.

A cold front will then approach the area on Tuesday. Shower and thunderstorm chances increase through the day on Tuesday, though it won’t rain all day. The front will stall out across the area on Wednesday, and waves of low pressure will ripple along it, keeping persistent cloud cover, shower, and even some thunderstorm chances in play. Our best rain chances right now look to be in the Thursday-Friday timeframe. Saturday should still feature some showers, but rain chances will be headed down as one final cold front pushes through the area, which will bring quite a cooldown to the area — think upper 50s for Sunday’s highs, which is quite a bit below normal for this point in the year. If you’ve not planted, think about delaying a bit longer — we could be talking frost and freeze issues heading into mid-March, because that’s what March does.

We do need the rain, that’s for sure — we are running way behind so far this year and are getting into quite a drought. The pollen rinse will certainly help, too!

Warming back up for the weekend

/ March 4, 2022 at 5:59 PM

After a brief interlude on Friday thanks to a cool wedge of high pressure building into the area, warmth and sunshine returns Saturday as the front lifts back northward as a warm front. Like the cold frontal passage last night, we’ll remain rain-free as the warm front lifts northward.

With the wedge airmass out of here, temperatures jump back to the mid-to-upper 70s by Saturday afternoon, and we’ll warm even further toward the low 80s on Sunday. The record high for March 6 is 85°, and we might get within spitting distance depending on how much heating can develop.

Warm weather will continue into Monday with near-record highs possible again. Beyond that, things take a turn for the unsettled for much of the next work week with temperatures running a little cooler (but still above normal).

For now, though, enjoy your weekend!

Much cooler Friday as high pressure wedges southward

/ March 3, 2022 at 10:07 PM

We set a record high today at downtown Charleston: 80° broke the record of 79° set in 1976. We’ll get a brief interlude in the warmth Friday as high pressure wedges southward across the area, turning winds more northeasterly and kicking up the cloud cover to keep temperatures running about 15-20° cooler than we saw today. Moisture is scant, though, so no rain is expected — we’ll just be chilled out briefly before the wedge front lifts northward on Saturday, returning us to the 70s and 80s for the weekend. We remain rain-free through Tuesday before the pattern turns more unsettled as we get deeper into the next work week.

Rest of the work week: Meteorological spring in full swing

/ March 1, 2022 at 6:44 PM

After topping out around 70° today, temperatures will aim ever warmer for Wednesday and Thursday before a dry cold front knocks temperatures down a bit for Friday. Mostly sunny skies will be the rule throughout, and with winds more out of the west, the risk for coastal flooding will decrease, too. Weather looks to get even warmer as we get into the weekend, too, with rain chances maybe returning to the forecast next Tuesday.

We’re getting close to the last freeze dates of the season (the median last freeze at North Charleston is March 8), but we can still have bouts of freezing temperatures well into early April, so be cautious if you begin planting. To that end, though, the National Weather Service has restarted the frost and freeze program as of today, which means Frost Advisories and Freeze Warnings will once again be issued by the NWS office when conditions become questionable for vegetation. If those end up being needed at any point, I’ll pass them on.

Enjoy the rest of a rather nice week!

Temperatures warming nicely for Tuesday as cloud cover decreases

/ February 28, 2022 at 5:59 PM

Tuesday looks to be a rather nice day across the area as early cloud cover moves away in the afternoon, yielding temperatures in the upper 60s to around 70° as more sunshine begins to filter in. High pressure will be building in and taking residence over the area for several days, which will keep fair and increasingly warm weather in the forecast as we kick off meteorological spring, which runs from March 1 to May 31.

The only weather-ish concern will be the risk for some minor coastal flooding with the ~7am high tide Tuesday. Water levels could peak around 7.0-7.2′, putting some salt water on vulnerable roadways particularly on the western side of the peninsula near the Joe and MUSC. Any flooding should be relatively short-lived, and with winds shifting offshore after tomorrow, the risk for coastal flooding will end just as quickly as it arrived.

The week ahead: Return to warmth as March arrives

/ February 27, 2022 at 11:42 PM

February gives way to March this week with very little fanfare in the weather department. We start the week with temperatures running a touch below normal, but a gradual warmup is in the cards as we get through the work week before we approach 80° by the weekend. High pressure will keep things rain-free for the next few days, though it may be a little more cloudy than we might like Monday into Tuesday.

The only main weather concern this week will be the risk for minor coastal flooding with the Monday and Tuesday morning high tides thanks to persistent northeast flow and the upcoming new moon. The 6:03am high tide Monday morning could clip 7’. Tuesday morning’s will run a little higher around 7.2-7.4’, which could close a few vulnerable roads near the edges of the Charleston peninsula. Beyond then, winds begin to go around to the north and then the west, which will cut down the coastal flooding risk for the rest of the week.

Rest of today: On and off showers, best chances later this afternoon

/ at 11:31 AM

Keep rain gear handy for the rest of today as we get into the afternoon and evening hours. Light showers are already beginning to break out across the area, though the bulk of the rain remains — for now — to our north and west. Expect this to continue to fill in as the day goes on, with the best chance of showers later this afternoon into this evening. Temperatures will top out around 60° given cloud cover and showers in the area.