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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 ...
A flash flood watch was issued for western portions of the state on July 9, where a moderate risk of excessive rainfall was in place by the Weather Prediction Center's outlook. [69] [93] On the same day, a portion of Massachusetts Route 57 was flooded in Tolland, and basements were inundated by floodwaters in northwestern parts of the state. [94]
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 warm phase of a notable climate pattern appears likely to hit the U.S. later this year, and according to some of the latest models, Pennsylvania could see above-average temperatures and ...
Greater than 2 inches of rain: number of closure days to be determined According to the Westchester Health Department, .71 inches of rainfall has been observed in the past 24 hours.
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).
As the record stretch of dry weather continues for much of the Northeast, building warmth and increasing winds are boosting the brush fire danger this week, AccuWeather meteorologists warn. While ...
The Johnstown flood of 1977 was a major flood which began on the night of July 19, 1977, when heavy rainfall caused widespread flash flooding in Cambria County, Pennsylvania, United States, including the city of Johnstown and the Conemaugh Valley. On July 19, a deluge of rain hit the Johnstown area during the night.