A Tornado Watch in effect until 11 p.m. for all of WNY, and a Severe Thunderstorm Warning has also been issued.br The National Weather Service has issued a Severe Thunderstorm Warning for northwestern Cattaraugus County, southwestern Erie County and Chautauqua County until 3:30 p.m. Thursday.br There is also a Tornado Watch in effect until 11 p.m. Thursday for 16 counties, including all eight across Western New York.br Officials say severe thunderstorms were located along a line extending from near Findley Lake to Cranesville, Pennsylvania, and moving east at 40 mph.br Areas that could be impacted by the storm are: Jamestown, Dunkirk, Fredonia, Westfield, Lakewood, Gowanda, Silver Creek, Falconer, Ashford and Mayville.br Wind gusts up to 60 mph are possible, as well as quarter-sized hail. br Winds could cause tree limbs and power lines to come down.