Coastal storm inundates New England over weekend, creating risk of renewed flooding – AccuWeather.com/ar/
AccuWeather meteorologists say a storm moving northeast across southeastern states will bring the next round of rain to areas of New England still reeling from the effects of Hurricane Lee. This storm is on track to move up the coast through Tuesday, potentially spreading anywhere between 1-2 inches of rain to parts of Connecticut, Rhode Island, eastern Massachusetts, southeastern Vermont, and southeastern Maine.
Locations across the coast and eastern Maine will be sensitive to any additional precipitation after observing up to nearly 6 inches from Friday night into Monday. The latest indicators show it will only take more than an inch of rain over the course of a few hours in some locations in central and eastern Maine to produce localized flash flooding.
In addition to coastal rain, areas across the Mid-Atlantic and Northeast are likely to see a slight drop in temperatures through Monday.
Parts of New England will be sensitive to additional rainfall
Forecasters say recent rain across nearby parts of southern New England over the previous week could heighten concerns about rising water levels and transportation delays.
“Not only is eastern Maine vulnerable to flooding early this week, but areas in Connecticut, Rhode Island and eastern Massachusetts will also be at risk for localized flooding,” AccuWeather Meteorologist Alex Da Silva explained.
Between September 8th and 13th, locations such as Hartford, Connecticut, and Pawtucket, Rhode Island, a few miles northeast of Providence, recorded approximately 150-165% of their normal monthly precipitation. To put that into perspective, rainfall at both locations totaled more than 6 inches during that time period, while typical September rainfall amounts are around 3 to 4 inches.
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Some locations in central and eastern Massachusetts saw higher amounts of rain last week, including Leominster, a city about 20 miles north of Worcester, which saw 11 inches of rain fall in less than eight hours. Heavy rains led to evacuations and school closures across the region, including those residing near Barrett Park Pond Dam, where wall damage was reported during the flooding event.
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Although much of southern New England was on track to recover from last week’s periods of heavy rain, additional precipitation early this week could exceed the localized flood threshold in low-lying, poorly drained areas and small streams and rivers. .
Impacts on the rest of the Northeast
As the coastal feature rises north along the East Coast early this week, it will join moisture from a weak area of low pressure moving across the northeastern interior. Rain and areas of persistent rain will continue to spread across the Mid-Atlantic region into Monday morning, posing a risk for early morning commuting.
As AccuWeather accurately predicted, Monday morning traffic slowed back and forth on the I-95 corridor between Boston and Philadelphia as rain fell across the region.
AccuWeather Senior Meteorologist Dan Pedinowski warned travelers that some heavy pockets of rain could fall, which could reduce visibility and cause some standing water on streets and sidewalks.
Wet conditions will continue to gradually shift northeast throughout Monday as the center of the storm moves along the New England coast. Some locations across Delaware, Maryland and far eastern Pennsylvania were beginning to dry out by mid-morning.
“Although the rain may continue into the evening in cities like Boston, south around Philadelphia, conditions will improve as the rain moves out of the area,” Pedinowski said.
High pressure is expected to move behind this northeastern coastal storm and bring calm, dry, and mostly sunny conditions back to the area.
Temperatures are expected to rebound by a few degrees as the week continues as this pattern heralds a warmer air mass. Temperatures in many locations, such as Washington, D.C., and Pittsburgh, will likely rise a few degrees above normal mid-September values through at least Thursday, with mainly dry weather expected.
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