Concord, N.H. –Flash flooding is possible across central and southern New Hampshire Friday as slow-moving thunderstorms threaten to drop up to 3 inches of rain in just a few hours.
According to the National Weather Service in Gray, Maine, a Flood Watch remains in effect from noon through 8 p.m. Friday for 11 counties, including Grafton, Merrimack, Hillsborough, Cheshire, and Rockingham. Rainfall rates may reach 2 inches per hour, raising the risk of street flooding and overflowing streams, especially in low-lying and urban areas.
Cities such as Manchester, Nashua, Concord, Dover, and Keene could see travel disruptions by late afternoon, particularly near poorly drained intersections and smaller rivers. The combination of saturated soils and high stream levels from recent rainfall increases the risk of flash flooding.
Residents are urged to avoid driving through flooded roadways, keep phones charged, and be ready to move to higher ground if water rises quickly. This system is developing along a stationary front that’s fueling clusters of thunderstorms capable of repeating over the same areas.
Stay weather-aware throughout the evening. Additional Flood Warnings could be issued if rainfall intensifies or becomes more widespread.
