Southern Maryland Storm and Outage History

This area doesn't get outages by accident. Here's the history that keeps repeating.

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June 2012: the derecho

On the evening of June 29, 2012, a fast-moving line of thunderstorms called a derecho tore from the Midwest to the Atlantic, hitting Southern Maryland late at night with hurricane-force wind gusts. Trees came down across Charles, St. Mary's, and Calvert counties by the thousands. Hundreds of thousands of customers lost power across the region, and many in the hardest-hit areas waited days for restoration — in late-June heat, with no air conditioning. It's still the outage everyone around here measures the rest against.

2003: Hurricane Isabel

Hurricane Isabel came ashore in September 2003 and pushed a massive storm surge up the Chesapeake and the Potomac. Waterfront communities in Southern Maryland flooded; wind damage stretched far inland. Power was out for days across the region, and the storm rewrote what people thought a hurricane could do this far up the Bay.

2002: the La Plata tornado

On April 28, 2002, a violent tornado cut through downtown La Plata — one of the most destructive tornadoes in Maryland history. It leveled parts of the town center and knocked out power across the area. Tornadoes are rare here, which is exactly why this one matters: the outages it caused came with no warning at all.

The ordinary storms (the real pattern)

Here's what the history books miss: most outages in Charles County don't come from famous storms. They come from ordinary summer thunderstorms dropping a tree across a feeder line on Route 301, or an ice storm in February snapping branches onto wires in Nanjemoy. SMECO's crews are good, but in a county with this many trees and this many miles of line, restoration takes time — and the most rural areas wait longest.

What the pattern tells you

Outages here aren't a question of if. They're a question of when, how long, and what season. A standby generator doesn't care which storm it is — derecho, hurricane remnant, ice storm, or a random Tuesday thunderstorm. Get a storm-ready assessment before the next one.

Frequently Asked Questions

How long do outages usually last in Charles County?

Most are hours, not days — a tree on a line gets cleared and power returns the same day. But major storms are different: the 2012 derecho left some areas dark for several days. A generator covers both the routine outage and the rare long one.

Are outages worse in rural parts of the county?

Generally, yes — restoration prioritizes the lines serving the most customers, so remote areas like Nanjemoy or Charlotte Hall can wait longer after a widespread event. If you're rural, backup power matters more, not less.

Does SMECO offer any outage alerts?

Yes — SMECO has outage reporting and text alerts for its members. They're useful for knowing what's happening, but they don't shorten the wait. A generator means the wait doesn't matter.

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