The National Weather Service issued a tornado warning for much of the state on Wednesday, including Southern Tier and Western New York counties, as severe weather hit the region.

Residents of New York and Pennsylvania states also prepared for an increased likelihood of thunderstorms, damaging winds and heavy rain.

The extreme conditions are due to a moist air mass south of a warm front mixing with strong atmospheric winds from the remnants of Tropical Storm Beryl, according to the weather service's Storm Prediction Center.

In the Southern Tier region of New York State, a tornado warning is in effect until 9 p.m. for Steuben, Broome, Chemung, Schuyler, Seneca, Tompkins, Chenango and Delaware counties.

Further west, tornado warnings have been issued for several counties, including Allegany, Livingston, Cattaraugus, Chautauqua and Genesee, the weather service said. The tornado warning for western New York State is also in effect until 9 p.m. Wednesday.

In Pennsylvania, the following counties are under tornado warnings: Bradford, Lackawanna, Luzerne, Susquehanna, Wayne and Wyoming.

Severe thunderstorm spotted near Dansville

Earlier Wednesday, the National Weather Service issued a tornado warning for southeast Monroe County, eastern Livingston County, northeast Allegany County and western Ontario County until 2:15 p.m.

At 1:36 p.m., a thunderstorm with the potential to produce a tornado was spotted 8 miles southwest of Dansville, Livingston County, moving northeast at 45 mph. The storm's radar indicated rotation.

The affected area included Honeoye Falls, Lima, Rushville, Dansville, Bristol, Bloomfield and Naples.

A tornado and severe thunderstorms also hit western New York State.

More: What is the difference between a severe weather warning and a severe weather alert?

What’s next for the Southern Tier forecast?

The National Weather Service issues a Tornado Warning when weather conditions suggest a tornado and severe thunderstorms are possible.

People should act quickly if a warning is issued or they suspect a tornado is approaching. Get to an indoor, lowest level stable shelter and avoid windows. If you are in a mobile home, vehicle, or outdoors, get to the nearest stable shelter and cover your head to block flying debris.

The weather service said heavy rains and localized sudden flooding were possible, especially along and north of the New York State Thruway corridor.

DATA: Search for tornadoes in New York since 1950

The severe weather warnings come after a heat warning was issued for much of the Southern Tier and all of northeast Pennsylvania on Wednesday.

Meteorologists predict that there will be some showers until Thursday before a high pressure area builds up again towards the end of the week.

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