A strong storm system will clip the northern half of South Carolina Monday afternoon and evening, producing a line or two of thunderstorms that could cause wind damage. A separate storm system hugging the Atlantic Coast will deliver a wet first half to the day from the LowCountry to the Grand Strand.
A powerful area of low pressure and accompanying cold front is expected to sweep across the Ohio Valley and Northeast Monday. The tail end of the cold front is likely to trigger a broken line or two of showers and thunderstorms by early afternoon across the South Carolina Upstate region. The storms will then dot the landscape through parts of the Midlands and PeeDee regions by late afternoon or early evening.
The strongest cells associated with the front will be capable of producing damaging wind gusts up to 60 mph. This risk is likely to stay confined to an area near and north of a line from Clemson to Columbia to Florence, SC. Periods of heavy rain will be ongoing across the southeastern third of South Carolina Monday morning and midday, where a broad area of lower pressure is moving up along the Atlantic Coast from Florida. Severe weather is not anticipated with this activity, although some of the downpours may produce brief street flooding in low-lying areas.
Monday's front is forecast to clear the Palmetto State Monday night and be followed by a much cooler, drier air mass Tuesday and Wednesday. The dry spell will brief though, as the next storm system capable of producing rain and thunderstorms across South Carolina is on target to arrive Thursday.