RICHMOND, VIRGINIA — Flash flooding is possible across parts of the coastal Mid Atlantic today, Saturday, September 5, with Max Velocity Weather outlining a Slight Risk, carrying a 15 percent chance of scattered flash flooding, stretching from Richmond and Norfolk through Raleigh, Greenville, and Wilmington, as a southward-pushing cold front interacts with an advancing upper-level wave and a moist airmass this afternoon.
Cold Front and Upper Level Wave Combine Over the Coastal Plains
According to the outlook, updated early Saturday morning at 4:37 a.m. ET, a southward-pushing cold front will interact with an advancing upper-level wave across the Mid Atlantic and Carolina coastal plains this afternoon. This combination, paired with a high atmospheric moisture content, will support heavy rainfall rates of up to 2 inches per hour within the strongest storms, a rate capable of quickly overwhelming drainage systems, even over relatively short durations…