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.
Get ready for another big temperature swing for Wednesday. We’ll have some showers in the area during the morning as low pressure shifts offshore, pushing a stalled front near the coast further eastward. As that happens, cool high pressure will build in, keeping temperatures well below normal for mid-April in the mid-60s — legit late-season hoodie weather for your walk around the neighborhood or grocery runs. Expect temperatures to continue below normal through the end of the work week.
Four-panel view from the KCLX radar illustrating a supercell moving through southern Hampton County with a very strong tornado signature.
April 13, 2020 will join April 16, 2011 and March 15, 2008 as days that will live on in local weather infamy. Some people lost their lives today — at least five fatalities were reported in Hampton County from the supercell depicted above. Others in places like Walterboro, Summerville, and Moncks Corner suffered serious damage to their homes or lost them entirely. It was a thankfully rare day that we hope to not see again for a good long while.
Unfortunately, we’ll be needing to spend this Easter evening getting ready for a round of strong storms tomorrow morning. The severe weather threat for Monday is coming into focus, and there’s not been much change to the previous thinking: A line of strong to severe thunderstorms will push through the area during the morning hours. These thunderstorms will be moving into an atmosphere that is favorable for strong, damaging wind gusts (70 MPH possible, according to the National Weather Service), a few tornadoes (one or two of which could be fairly potent), and large hail.
What’s clear about Monday is that, at some point, there will be a squall line with strong thunderstorms coming through the area. These storms will be capable of producing wind damage and could spawn a tornado or two along the leading edge of the line.
The degree to which this threat will materialize is going to be highly dependent on timing, and that’s where it gets tricky — but I’ll do my best to demystify it.
A dry cold front will swing through tonight, bringing temperatures down well below normal for mid-April for Friday and Saturday, dipping into the low 40s by Saturday morning. High pressure will bring pleasant weather into the area to kick off Easter weekend, but that high pressure system will slide offshore Saturday evening, giving way to a potent storm system for Sunday and Monday.
No, you suddenly didn’t wake up in June (though we would all understand if you felt that way): Temperatures will approach record levels on Thursday ahead of an oncoming cold front. Westerly winds will usher in more drier air, thankfully, so the humidity won’t be terrible as we approach our record high of 90° for April 9.
There is a small possibility that the remnants of a thunderstorm complex coming in from the northwest could bring showers to the area early Thursday. The official NWS forecast remains dry, highlighting only about a 10% chance of rain in the Charleston metro. Further west toward I-95, chances are marginally higher. Trends will be watched, but odds point to dry conditions in the short-term models.
Of note: A statewide burn ban is in effect, and weather conditions particularly in Berkeley and Dorchester counties will become prone to wildfire Thursday afternoon. Please, please, please do not burn — let’s not give our first responders anything else to deal with.
We’ve got another warm day on tap Tuesday as temperatures top out in the mid-80s under partly cloudy skies. We’ll want to keep an eye on the skies in the afternoon and early evening hours for the potential for a few storms to work their way into the area; one or two of these could produce some strong winds and maybe some hail. Otherwise, we continue late-spring/early-summer-like weather.
Once again, we will need to watch for the potential for minor tidal flooding around times of high tide Tuesday (8:02am and 8:33pm). Keep an ear out for Coastal Flood Advisories if you have any essential travel tomorrow. (Otherwise, stay home.)
After a rather pleasant weekend, temperatures will begin to trend back above normal this week with chances of showers and perhaps a few thunderstorms each afternoon. Highs will be getting into the mid-80s by midweek, marking a return to that summer preview we were feeling toward the end of March. A cold front will move through the area sometime later this week, bringing a reduction in temperatures, but showers may yet stick around. It’s a fairly low confidence forecast looking toward next weekend with a fair bit of divergence in the models, so stay tuned for updates as things will undoubtedly need to be ironed out.
Did you like today? Excellent — there’s more on the way for Saturday as temperatures top out in the mid-70s once again under mostly sunny skies. High pressure will then slip into the Atlantic turning winds more onshore for Sunday, boosting humidity a little and providing for more partly cloudy skies, but comfortable temperatures in the mid-70s continue.
Only things to watch out for this weekend (besides coronavirus!):
Weather conditions will be conducive to wildfires through Saturday afternoon. Postpone any outdoor burning so that things don’t get out of hand in an already stressful situation.
Some minor tidal flooding may be possible with the Sunday morning high tide around 6:13am. As of this writing, the NWS forecast prediction is for tides to top out around 7′. This would cause some minor flooding in places such as Lockwood Blvd. and the intersection of Hagood and Fishburne streets near the Citadel and MUSC.
Otherwise, this weekend’s weather will be enjoyable even if the circumstances aren’t so hot. Try to get outside — it will be good for your soul.
We have a beautiful Friday coming up for outdoor social distancing activities: mid-70s with low humidity in the afternoon under sunny skies as high pressure has full control of the weather situation. It’s a great day to work from home in the backyard or perhaps have some outdoor home school lessons. (I promised The Dog that I’d throw him the ball this evening, so that’s how I’m going to take advantage.) Remember, beating COVID-19 isn’t just about six feet of personal space or avoiding crowds — it’s also about taking time to do things for your mental health as well. This weather should hopefully help in that regard.