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.
After a reasonably quiet Friday, shower and thunderstorm chances return to the forecast for the weekend, bringing with it a decent shot at some much-needed rain but also the risk for a strong storm or two on Saturday.
May Day will be a partly cloudy affair across the Lowcountry as Atlantic high pressure continues to exert influence over our weather. We’ll start near 60° away from the locally warmer coastline, warming to the mid-80s in the afternoon. It’ll be a bit breezy especially as the seabreeze gets by in the early afternoon, but otherwise no major concerns are expected.
High pressure moving offshore will help send winds a little more southerly for the rest of the work week, and temperatures will respond with a subtle bump into the mid-80s each afternoon. Expect mostly sunny skies to prevail on Wednesday; lows in the upper 50s warm to about 85° in the afternoon, except a little cooler near the coast where the cooler Atlantic waters will modulate the high temperatures a bit.
Another seasonably warm and mostly sunny day is on tap for Tuesday as high pressure remains in control. We’ll start the day on the cool side of normal once again, with lows in the mid-to-upper 50s expected away from the coastline. Then, temperatures warm to the low 80s in the afternoon with plenty of sunshine throughout. Don’t forget the SPF!
We will still need to monitor tides in the late evening as water levels should peak between 7-7.2’ mean lower low water in Charleston Harbor a little before 10:30 PM. Some minor salt water flooding will be possible an hour or two around the time of high tide as a result, and another coastal flood advisory appears probable. This should do it for this high tide cycle, though, as astronomical influences wane and winds turn more unfavorable starting Wednesday.
High pressure will be the main weather feature for the next few days, with comfortable warmth and plenty of sunshine expected through Thursday before the next isolated storm chance arrives Friday.
A front slowly approaches the area during the day Saturday, and ahead of it we’ll see scattered showers and thunderstorms begin to develop during the afternoon as the inland-moving seabreeze combines with some mid-level energy aloft. Some brief heavy rain is possible but shouldn’t ultimately amount to a ton of rain in any one location. Temperatures will continue to run above normal for late April; expect lows in the mid-60s to warm to the mid-80s in the afternoon before storms kick in.
The front gets by on Sunday, and winds shift a little more northeasterly as a result. We’ll start in the mid-60s once again, but temperatures should peak a touch cooler than they did on Saturday, with highs in the low 80s under partly cloudy to mostly sunny skies. Quiet weather continues for a few more days, with temperatures warming back into the mid-to-upper 80s by the middle of next week.
A few more storms will be possible Thursday as the lingering stalled front hangs around a bit longer. This, combined with the seabreeze, keeps a slight chance for storms in the metro in play for a good bit of the day, though the rain chance should diminish as the seabreeze pushes further inland. Temperatures will still be on the warm side of normal, but cloud cover, storms, and onshore flow should keep highs suppressed to the low 80s.
The rest of the work week will be a bit on the unsettled side, especially Wednesday into Thursday, as a stalling front combines with some mid-level energy that’ll be working through the area. Wednesday starts generally quiet with lows in the mid-60s, but showers and thunderstorms should generally fill in starting in the early to mid-afternoon hours as temperatures peak in the mid-80s. Locally heavy rain will be possible, and a strong storm or two with hail and gusty winds can’t be ruled out, especially inland. Keep an eye out just in case, and be ready for evening commute slowdowns.
We’ve got another warm and generally quiet day of weather inbound for Tuesday. Temperatures will, in fact, run a little warmer than they did on Monday despite some additional cloud cover as high pressure aloft begins to break down. Expect generally mid-80s in the metro after a mild start in the mid-60s — temperatures that are climatologically much more in line with early June than they are late April.
A stray shower can’t be totally ruled out as the seabreeze pushes inland, but otherwise, most of us should have one more rain-free day across the area.