Charleston Weather Blog
Forecast explanations, atmospheric science, and other cool weather-related stuff for Charleston, SC
Another round of heavy rain is moving into Charleston County and will move through the metro over the next couple hours. The risk for flash flooding remains elevated, and the Flood Watch was extended until this evening as a result.
A Flood Watch continues for Charleston County overnight, where the greatest risk for heavy downpours capable of causing flash flooding will exist. The risk for flooding is lower in Berkeley and Dorchester, so the watch has been canceled there.
After a dreary weekend, a more standard summertime pattern returns to the Lowcountry as high pressure ridges into the area aloft, finally breaking down the high pressure wedge and stalled front that’s kept us unsettled (but at least on the cool side).
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A Flood Watch continues across the SC Lowcountry, including the CHS Tri-County area, until early tomorrow morning. A Coastal Flood Advisory is out for Charleston County, with minor tidal flooding expected between 8-11PM. Finally, minor river flooding is expected through Thursday along the Santee.
A scattering of showers with a few downpours continues this afternoon. Some signs there might be a bit of a lull this evening, but more downpours will be possible overnight into tomorrow. A Flood Watch remains in effect until Monday morning.
There’s a bit of a dry slot in the I-26 corridor right now, with rain coming ashore on either side of it, but don’t expect that lull to last terribly long with more heavy downpours queuing up over the Atlantic. Rare August washout in the Lowcountry, unfortunately.
A Flood Watch is in effect through Monday morning as another 1-2” of rain should fall across the area, with locally heavier amounts. A few could see rainfall amounts approaching 5”, which heightens the risk for flash flooding. Stay alert for Flood Advisories or Flash Flood Warnings today.
Heaviest rain is lifting westward away from downtown, spreading the risk for a quick 1-2” of rain further inland toward North Charleston, Ladson, and eventually Summerville and Goose Creek.
Flooding being reported by Charleston EMD at Calhoun at Smith, Calhoun at Ogier, and Coming and Morris so far. Rain continues to fall and additional roads could take on water, potentially leading to closures. Avoid all flooded roads and never, ever go around barricades.
Very heavy rain continues to move ashore at Sullivan’s and IOP, moving westward into Mt. Pleasant and downtown Charleston. Radar estimates over 1” of rain in an hour in parts of Mt. Pleasant already. Flood advisory continues downtown until 1:45am.
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