Intense rainfall resulted in flooding across Upstate New York on Sunday, as over 5 inches were recorded in some areas (graph displayed)
Upstate New York experienced a series of severe thunderstorms on Sunday, 12th July 2025, causing widespread flooding and flash flood warnings in multiple counties. The storm system, which moved into northern Oneida County, was particularly intense in Tioga and Broome counties, with Newark Valley in Tioga County being the most severely impacted location.
The heaviest rainfall was reported in Tioga and Broome counties, with Newark Valley receiving a staggering 5 inches of rain. Glen Aubrey in Broome County was the rainiest spot, recording a total of 5.1 inches of rain. Other areas affected by flash flooding and heavy rainfall warnings included Danby, Caroline, Berkshire, Richford, Slaterville Springs, Brooktondale, Speedville, Jenksville, and many more in Central New York.
Several roads were closed due to flooding in Southern Tier counties, including Broome and Tioga. The town of Lee in northern Oneida County received 3.25 inches of rain in just four hours, while the town of Nanticoke in Broome County saw 2.5 inches of rain in a mere 40 minutes on Sunday evening.
The weather service office in Binghamton, responsible for the forecast area that includes the Finger Lakes, Southern Tier, and Central New York, reported that the most intense rainfall occurred within their region. Water rose to first-floor windows in Newark Valley due to the heavy rain, forcing emergency response actions such as temporary shelters at Newark Valley High School and Owego Church of the Nazarene.
As if the flooding wasn't enough, much of Upstate New York is currently under a heat advisory, with temperatures expected to feel close to 100 degrees. A flash flood warning is currently active for Tompkins County, and another has been issued due to the storms. The heat advisory serves as a reminder for residents to stay hydrated and seek cool indoor environments during the peak heat hours.
[1] Source: Weather Service Office in Binghamton, local news reports.
Environmental scientists are closely monitoring the impact of the severe thunderstorms on Upstate New York's ecosystem, particularly in Tioga and Broome counties, which received significant amounts of rain. The weather service office in Binghamton, which covers the Finger Lakes, Southern Tier, and Central New York, has reported that the most intense rainfall occurred within their region, with Newark Valley being the most severely impacted location.
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