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Increased Rain Chances Beginning this Week

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National Weather Service
Two systems to bring increased shower chances this week

The Palmetto State will be concluding the weekend with above average temperatures and dry conditions. However, cooler air will welcome in the new workweek along with shower chances likely increasing later in the week.

High pressure is expected to build southward through the Mid-Atlantic Monday while a cold front front continues eastward through the western Gulf States. Shower chances will remain minimal throughout Monday but will begin to increase rapidly into the overnight hours. A cold front, associated with a weakening low pressure system, will slowly drop south across northern portions of South Carolina overnight into Tuesday and arrive to southern areas by Tuesday night. Shower chances will lessen across the north more quickly compared to the south where a wave of low pressure will pass, keeping rain chances elevated.

There will likely be a very brief break in shower activity Wednesday morning as a weak high pressure system digs into the region from the north. However, by the afternoon and especially into the overnight rain chances will steadily increase once again as a stronger low pressure system and associated cold front moves eastward from the central Mississippi Valley.

Weather models continue to disagree with the intensity of this cold front but hint that there could be enough atmospheric instability to trigger up a few thunderstorms, some of which could be strong. Heavy rainfall, at this time, is expected to be the main threat but as the event draws closer additional thunderstorm hazards could be added.

Once the secondary low pressure and cold front push through Thursday the region is expected to return to drier and cooler conditions to start off the weekend.