The National Weather Service issued a weather alert at 6:17 p.m. on Wednesday for strong thunderstorms until 6:30 p.m. for Venango, Forest and Clarion counties. Expect nickel-sized hail (0.88 inches) and wind gusts of up to 55 mph. “At 6:16 p.m., Doppler radar tracked a strong thunderstorm near Clarion, moving…