Weather Alerts For Isle Royale Natl Park, MI

URGENT - WINTER WEATHER MESSAGE National Weather Service Marquette MI 934 AM EST Sat Jan 17 2026 Keweenaw-Northern Houghton- Including the cities of Houghton, Copper Harbor, and Hancock 934 AM EST Sat Jan 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS EVENING... * WHAT...Lake effect snow. Additional snow accumulations up to two inches. * WHERE...Keweenaw and Northern Houghton Counties. * WHEN...Until 7 PM EST this evening. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. &&