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Tropical cyclones normally threaten the states during the summer and fall, with their main impact being rainfall. [3] Although Hurricane Agnes was barely a hurricane at landfall in Florida, its major impact was over the Mid-Atlantic region, where Agnes combined with a non-tropical low to produce widespread rains of 6 inches (150 mm) to 12 inches (300 mm) with local amounts up to 19 inches (480 ...
The worst flooding in the state took place in the Susquehanna River valley and its tributaries. Over 200,000 residents in northeastern Pennsylvania had to be evacuated due to the rising floodwaters. Damage in Susquehanna County alone totaled over $100 million (equivalent to more than $145 million in 2023).
Average annual precipitation in Pennsylvania has increased 5 to 10 percent in the last century, and precipitation from extremely heavy storms has increased 70 percent in the Northeast since 1958. Wildfire smoke pollution, Delaware River, 2023. During the next century, annual precipitation and the frequency of heavy downpours are likely to keep ...
• ‘The worst event in our office’s history’: ... West Virginia and Pennsylvania through Monday. ... More than 2 feet of rain fell in the state’s mountainous region from Wednesday morning ...
The Johnstown Flood was the worst flood to hit the U.S. in the 19th century, and to date, the worst to strike Pennsylvania. [ 27 ] 1,600 homes were destroyed, $17 million in property damage levied (approx. $550 million in 2022), and 4 square miles (10 km 2 ) of downtown Johnstown were completely destroyed.
The flooding was the worst in Rhode Island history, as the Pawtuxet River crested over 69 feet—12 feet above flood stage, shattering the previous record by several feet. The rainstorm, which occurred during the cool, dry season, added 8.79" to an already rainy March. At 16.34" of rain, it was the wettest month on record for Rhode Island. [11]
If it develops, the climate pattern will influence summer and fall weather in the Keystone State. El Niño is likely on its way. Here’s what it could mean for Pennsylvania’s weather
In Pennsylvania, heavy rainfall was reported, with much of the state experiencing more than 7 inches (180 mm) of precipitation. Furthermore, a large swath of rainfall exceeding 10 inches (250 mm) was reported in the central part of the state. Overall, the rains peaked at 19 inches (480 mm) in the western portions of Schuylkill County. [21]