September 6, 2026

One alert covers this region, and it is confined to Delaware. The National Weather Service office in Mount Holly has a coastal flood advisory in effect until 5:15 AM Eastern for Kent County, inland Sussex County, and the Delaware beaches.

A coastal flood advisory means minor tidal flooding around high tide. In practice that is water across the low sections of shore roads, standing water in bayside parking areas, and a slower drive than usual for anyone out early. It is the mildest of the three coastal flood products and it clears as the tide goes out.

If you keep a vehicle on a street that takes water at high tide, moving it is the whole response. Driving through standing salt water is the thing worth avoiding, both because the depth is hard to judge from a driver's seat and because a road under moving water may not be intact underneath it. The National Weather Service campaign on this point is called Turn Around, Don't Drown, and the name is the instruction.

Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia carry no active alerts this morning. For those five jurisdictions this is a clear Sunday.

The Atlantic basin has no active systems, and the National Hurricane Center's 8 PM Eastern outlook on September 5 expects no development over the next seven days.

No wildfires, grid emergencies, water system disruptions, or open federal disaster declarations are reported across the six jurisdictions this morning.

The national wildfire preparedness level stands at 4 of 5 in the National Interagency Fire Center report dated September 5 at 7:30 AM Mountain time, with the uncontained large fires concentrated in the Northern Rockies, the Northwest, and the Great Basin. None are in this region. Year to date the national totals are 53,030 fires and 8,307,707 acres.

No heat alerts, air quality alerts, or boil-water advisories are active across the region this morning. This is the first day in several without heat products somewhere in the six jurisdictions, which is a fair marker of the seasonal turn.

The Centers for Disease Control and Prevention's Health Alert Network archive could not be read this run, so this brief makes no claim about national health advisories in either direction.

September in this region is the month when two seasons overlap. The heat that produced advisories through much of the past week is loosening its grip, and the tropical season is at its statistical peak. Right now neither is doing anything, which makes this a week with unusual room in it.

The forward-looking item worth naming is the one that shows up in the Delaware advisory in miniature. Tidal flooding on a clear day with no storm anywhere is a reminder that the baseline has shifted: the same high tide reaches further than it used to. For households along the Delaware and Chesapeake bays and the tidal Potomac, the question that matters is not whether a hurricane is coming this week. It is whether you know where the water goes on your own street when nothing at all is happening.

The practical version takes an hour. Walk your block at high tide and note where the water stands. Find the storm drain nearest your property and clear the leaves off the grate. Check whether the sump pump runs and whether its discharge line is blocked. If your basement has flooded before, move what is stored on the floor onto shelving now rather than during a warning.

With the Atlantic empty for the next seven days, the mountain counties of Pennsylvania, Virginia, and West Virginia get the same clear window for different work. Late-season storms that reach the Appalachians arrive as rainfall on terrain that drains fast, and the flash flood exposure in those valleys is not correlated with how strong a storm was at the coast. A clear week is the time to learn which road out of your valley stays open when the creek comes up.