The affected areas were. . Lake Erie from Dunkirk to Buffalo . The Upper Niagara River and Buffalo Harbor. The thunderstorm has weakened and no longer poses a significant threat to boaters.

At 1237 PM EDT, Doppler radar was tracking a strong thunderstorm over Farrell, or over Hermitage, moving northeast at 20 mph. HAZARD. Wind gusts up to 40 mph and pea size hail. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include. Hermitage, Sharon, Sharpsville, Farrell, Mercer, West Middlesex, Clark, Wheatland, and Fredonia. This includes the following highways. Interstate 79 in Pennsylvania between mile markers 116 and 119. Interstate 80 in Pennsylvania between mile markers 0 and 20. Interstate 376 in Pennsylvania between mile markers 0 and 3.

At 1225 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms near Guys Mills, or near Meadville, moving east at 40 mph. HAZARD. Wind gusts up to 50 mph and penny size hail. Some rotation has been observed with these storms. SOURCE. Radar indicated. IMPACT. Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include. Meadville, Corry, Titusville, Union City, Riceville, Adamsville, Lincolnville, Canadohta Lake, Guys Mills, Atlantic, Cochranton, Saegertown, Jamestown, Hydetown, Blooming Valley, Townville, Spartansburg, Elgin, Woodcock, and Geneva.