The National Weather Service in Grand Forks has issued a * Severe Thunderstorm Warning for... Central Marshall County in northwestern Minnesota... Northwestern Red Lake County in northwestern Minnesota... Northwestern Polk County in northwestern Minnesota... Western Pennington County in northwestern Minnesota... * Until 300 PM CDT. * At 205 PM CDT, severe thunderstorms were located along a line extending from near Old Mill State Park to near Angus to near Mallory, moving east at 20 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Thief River Falls, Newfolden, Middle River, St. Hilaire, Euclid, Viking and Holt. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail and damaging winds and continuous cloud to ground lightning is occurring with these storms. Move indoors immediately. Lightning is one of nature`s leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.