What to expect from severe weather Sunday in SC

First Alert Weather Day Sunday

Sunday will stay cool with highs only in the low 60s and a steady westerly breeze. This cold front is moving very slowly, so it will take a while to get here. Highs both days will be in the 70s. Storms will target central Virginia after 9 p.m. and last through midnight. A "backdoor front" - designated by the dashed purple line on this morning's satellite view (left panel of the graphic) - is forcing cooler air and overcast skies southward.

An added factor is southeasterly surface wind flow expected to develop ahead of the storms, creating a "veering profile" as winds in higher levels of the atmosphere blow from the south and southwest. A few showers possible Sunday evening to Monday morning but increasing valley rain is likely by Monday afternoon. Meanwhile the forecast surface map at 8 pm (right panel) shows the cold front with its associated low pressure centers barging eastward across the Appalachian mountains.




The central USA experienced a severe storms outbreak on Friday. However an isolated tornado can not be ruled out. The sun will shine bright once again tomorrow and temperatures will warm up a little bit more to near 70°. "The threat of heavier rains of up to 3-5", with possible flooding, should occur east of Acadiana, into Eastern Louisiana.

Monday looks like a cool and sunny April day. Highs rise back to the low and mid 80s for the remainder of the work week. Upper 60s and lower 70s return Friday through the weekend. There isn't a whole lot of moisture available, so we'll be mainly dry. Nighttime temperatures will be in the middle 50s amid blustery south winds sustained at 25 to 30 miles per hour, gusting up to 45 miles per hour and potentially higher in a few storms. There is a 90% chance for showers and storms today.

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