SVRAPX The National Weather Service in Gaylord has issued a * Severe Thunderstorm Warning for. Northwestern Arenac County in northern Michigan. Northeastern Gladwin County in northern Michigan. Ogemaw County in northern Michigan. Southeastern Roscommon County in northern Michigan. * Until 915 PM EDT. * At 839 PM EDT, severe thunderstorms were located along a line extending from near St. Helen to Bowmanville, moving northeast at 50 mph. HAZARD. 60 mph wind gusts and penny size hail. SOURCE. Radar indicated. IMPACT. Expect damage to roofs, siding, and trees. * Severe thunderstorms will be near. West Branch, Clear Lake, and Skidway Lake around 845 PM EDT. Rose City and Selkirk around 850 PM EDT. Rifle River State Park around 855 PM EDT. Other locations impacted by these severe thunderstorms include Prescott and Foster Township.