Mount Holly, NJ – Heavy rain targeted a narrow swath from Pennsylvania’s Lehigh Valley into northwest New Jersey overnight, leaving several towns with 2 to 3 inches of rainfall by Friday morning.
According to the National Weather Service in Mount Holly, a corridor of slow-moving storms late Thursday into early Friday produced widespread 1 to 2 inches with localized higher totals. Sussex and Warren counties in New Jersey were among the hardest hit, with 3.14 inches at Blue Mountain Lakes (Sussex County) and around 3 inches in the Hackettstown area. Nearby Stanhope measured 2.40 inches, while Newton reached 2.65 inches. Farther south in Hunterdon and Somerset counties, many gauges reported 1 to nearly 2 inches, including 2.20 inches near Holland Township and 1.89 inches near Peapack-Gladstone.
In Pennsylvania, Berks, Lehigh and Northampton counties saw similar pockets of soaking rain. CoCoRaHS observers logged 2.90 inches at Fountain Hill and 2.82 inches in Bethlehem, with several Reading-area sites between 2.5 and 2.9 inches. Easton reported 2.65 inches early Friday.
According to the Weather Service’s public information statement at 10:09 a.m., more than 800 spotter and automated reports were compiled from CoCoRaHS, CWOP, HADS and other networks. Forecasters noted the heavy band was relatively narrow, with lighter amounts toward southern New Jersey and coastal areas.
Minor urban and poor-drainage flooding was possible where the heaviest rain fell. Drivers should slow down for ponding, leave extra stopping distance and never attempt to cross a flooded roadway. Residents can clear storm drains where safe to do so and monitor updated forecasts.
According to the Weather Service, additional updates will be issued if new reports exceed the 1-inch threshold. A complete list of rainfall totals is available through NWS Mount Holly.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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