Charleston Weather Blog
Forecast explanations, atmospheric science, and other cool weather-related stuff for Charleston, SC
Latest on flood alerts: Flood Watch continues for Charleston County until 6PM. A River Flood Warning is in effect along the Santee River through Wednesday evening, with a 11.1’ crest expected Tuesday morning before falling below the 10’ flood stage.
As expected, the area of rotation has largely unwound with no indications of anything more concerning. Attention largely remains on the very heavy rain spreading north across Hwy 17 near Ravenel. This has eyes on the CHS metro in the 9-11am timeframe.
Strong storm near Adams Run may produce gusty winds approaching 50 MPH. There’s an area of rotation with it as well, but no imminent tornado threat; keeping an eye on it, though.
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.
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