Charleston, SC Weather Alert: Evening thunderstorms and coastal flooding threat through tonight

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Charleston, SC Weather Alert: Evening thunderstorms and coastal flooding threat through tonight

Stormy weather is expected to hit Charleston, South Carolina, this evening, and it could cause serious flooding—especially in areas near Charleston Harbor. With an unusually high tide expected around 8:30 p.m. tonight, even moderate rainfall may lead to waterlogged roads. Combine this with gusty winds, lightning, and heavy rain, and travel could become quite dangerous for everyone.

What’s Causing the Storm?

The National Weather Service in Charleston reports that a weak cold front is moving through the region this afternoon. This front is responsible for the unsettled weather. Storms are likely to continue into the night, and because tides are already running higher than usual, the chances of coastal flooding are even greater—especially during the evening and morning high tides.

Key Weather Risks Tonight

Here’s what residents and travelers in the Charleston area should watch out for:

Heavy rainfall that can quickly flood streets

Strong, gusty winds that can cause damage or knock down trees

Frequent lightning, making outdoor activity unsafe

Power outages, especially if winds damage power lines

Areas Most Likely to Flood

Some parts of Charleston are known to flood easily, especially during high tides. People are being advised to avoid these flood-prone locations:

Downtown Charleston, especially the Battery and Lockwood Drive

Summerville, Mount Pleasant, and North Charleston may also face localized street flooding due to heavy rain

Even if you’re not near the coast, sudden downpours can still flood roads and make driving risky.

What You Should Do

To stay safe during this weather, here are a few smart precautions to take:

Secure outdoor items like furniture, bins, and anything else that can be blown around

Avoid non-essential travel during peak rain or tide hours

Keep your phone charged and follow weather updates from reliable sources

Stay indoors during thunderstorms and lightning

Use caution if driving through standing water—turn around, don’t risk it

More Rain Likely This Week

This stormy weather pattern isn’t going away immediately. Forecasters say above-normal tides will continue into the week, increasing the chance of flooding during both morning and evening high tides. Severe weather warnings will likely remain in effect, and more advisories may be issued as the situation develops.

Charleston is facing a dangerous weather mix tonight, with heavy rain, strong winds, and a very high tide all expected around the same time. That means flooding could hit both coastal and inland areas. If you live in or around Charleston, it’s important to stay updated, avoid risky travel, and follow all safety advice. A little preparation now can go a long way in keeping you safe through the storms.

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