BOSTON — As the remnants of Florence move into New England Tuesday, we’re on alert for the risk of flash flooding. The National Weather Service has issued a FLASH FLOOD WATCH with widespread rain amounts on the order of 1-3”, much of which could fall in one to two hours. Some neighborhoods could see as much as 4-6” before the rain tapers off late Tuesday afternoon and into the evening.
While our greatest concern will be for urban flooding and ponding of water on the roads, there is a low risk for small river and stream flooding. Recent rains have our rivers running higher than normal. With high rain rates and deep tropical moisture in play, we’re watching a few locations in particular for the risk of minor flooding.
One of those spots is the North Nashua River at Fitchburg. When minor flooding occurs, some businesses at the Depot & River St. merger are at risk. The probability of minor flooding is low, in fact model simulations indicate only a 14 percent chance to exceed minor flood stage. Nonetheless, with some uncertainty to how much rain will ultimately fall here, if you live in this area it’s a good idea to stay weather aware.
Another area that could experience flooding is along the Squanacook River in Townsend. The intersection of Turnpike and Barker Hill Rd. is a prone location, and residents here may need to watch for rising water.