UPDATE, 9:22 p.m.: Steuben County has declared a state of emergency due to widespread flash flooding.
Travel is prohibited in the towns of West Union, Woodhull, Troupsburg, Tuscarora, Greenwood, Canisteo, Hornellsville, and Jasper.
Residents must stay off the road until further notice to ensure that emergency vehicles and public works equipment can respond to the emergency, said Timothy D. Marshall, the Steuben County director of public safety.
Highway, police, and fire officials are out and working.
Please do not call 911 unless it is for a true emergency, Marshall said.
The state of emergency will remain in effect until further notice.
A flash flood warning, issued by the National Weather Service, is in effect until midnight for Steuben County.
At 9:33 p.m., Weather Service Doppler radar and automated rain gauges indicated that heavy rain had fallen across the warned area. Between 1.5 and 2.5 inches of rain have fallen, and flash flooding is already occurring in several parts of Steuben County, according to the Weather Service.
Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses is possible.
Some locations that will experience flash flooding include Hornell, Bath, Canisteo, Wayland, Addison, Woodhull, Howard, Jasper, Thurston, Troupsburg, Avoca, Cameron, Arkport, Cohocton, Greenwood, Hartsville, West Cameron, Haskinville, Kanona and South Dansville.
Tuscarora Creek near Addison was rapidly rising and is expected to reach major flood stage, the Weather Service said.
Widespread flood impacts are expected from Addison to the confluence with the Tioga River, the Weather Service said.
Original story, 8:41 p.m.:
Many county and town roads in Steuben County have been affected by flash flooding from rain during the past 24 hours, reports Timothy D. Marshall, the Steuben County director of public safety.
A flash flood warning is in effect until 11 p.m. for Steuben County, where rain is continuing tonight.
Southern areas of Steuben County have seen more than 3 inches of rain and emergency officials are asking people to avoid that part of the county. Flash flooding has been reported in the towns of West Union, Woodhull, Troupsburg, Tuscarora, Greenwood, Canisteo and Hornellsville.
The following roads have been affected: state routes 36, 417, and 248; and county routes 84, 117, 103, and 98.
Drivers should use caution while driving at night. Do not drive your car through water that covers the roadway, Marshall said.
A flash flood watch remains in effect through Thursday morning for Steuben and Livingston counties.
Widespread heavy rain of 1 to 3 inches with localized amounts of 4 inches is expected as the remnants of Tropical Storm Fred impact the Southern Tier to the Finger Lakes and into the North Country from Wednesday through Wednesday night, the National Weather Service said.
An additional inch of rain is possible through Thursday morning in Livingston County, according to the Weather Service forecast.
The Weather Service has issued the watch for Livingston, Ontario, Allegany, Cattaraugus and Wayne counties in Western New York. In central New York, the watch includes northern Cayuga, Oswego and Lewis counties.
A separate flash flood watch was issued for Steuben, Tompkins, Cortland, Madison, northern Oneida, Onondaga, Schuyler, Seneca, southern Cayuga, southern Oneida, and Yates counties through Thursday morning.
Runoff from heavy rain may cause rapid rises on creeks and streams, leading to flash flooding. The heavy rain may also result in flooding of poor drainage areas and low-lying areas.