Isle Royale National Park
Gale Warning issued January 19 at 3:28AM EST until January 19 at 7:00AM EST by NWS Marquette MI
* WHAT...For the Gale Warning, north winds 25 to 30 kt with gusts up to 35 kt and waves 7 to 10 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. * WHERE...Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park. * WHEN...For the Gale Warning, until 7 AM EST this morning. For the Heavy Freezing Spray Warning, until 7 PM EST Tuesday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.
Heavy Freezing Spray Warning issued January 19 at 3:28AM EST until January 20 at 10:00PM EST by NWS Marquette MI
* WHAT...For the Gale Warning, north winds 20 to 30 kt with gusts up to 40 kt and waves 7 to 12 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. * WHERE...Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border. * WHEN...For the Gale Warning, until 1 PM EST this afternoon. For the Heavy Freezing Spray Warning, until 10 PM EST Tuesday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.
Heavy Freezing Spray Warning issued January 19 at 3:28AM EST until January 20 at 7:00PM EST by NWS Marquette MI
* WHAT...For the Gale Warning, north winds 25 to 30 kt with gusts up to 35 kt and waves 7 to 10 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. * WHERE...Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park. * WHEN...For the Gale Warning, until 7 AM EST this morning. For the Heavy Freezing Spray Warning, until 7 PM EST Tuesday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.
Gale Warning issued January 19 at 3:28AM EST until January 19 at 1:00PM EST by NWS Marquette MI
* WHAT...For the Gale Warning, north winds 20 to 30 kt with gusts up to 40 kt and waves 7 to 12 ft occurring. For the Heavy Freezing Spray Warning, heavy freezing spray at a rate of 2 cm per hour or greater occurring, and may rapidly accumulate on vessels. * WHERE...Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border. * WHEN...For the Gale Warning, until 1 PM EST this afternoon. For the Heavy Freezing Spray Warning, until 10 PM EST Tuesday. * IMPACTS...Operating a vessel in heavy freezing spray is hazardous. Freezing spray may render mechanical and electronic components inoperative. Rapid ice accretion on decks and superstructures may result in a catastrophic loss of stability. Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.
Winter Storm Warning issued January 19 at 2:12AM EST until January 19 at 10:00AM EST by NWS Marquette MI
* WHAT...Moderate to heavy snowfall rates and blowing snow. Additional snow accumulations between 1 and 4 inches. Winds gusting as high as 40 mph. * WHERE...Keweenaw and Northern Houghton Counties. * WHEN...Until 10 AM EST this morning. * IMPACTS...Plan on slippery road conditions and very difficult to near impossible travel conditions at times. Widespread blowing snow will significantly reduce visibility. The hazardous conditions will impact the Monday morning commute. * ADDITIONAL DETAILS...Windchills will fall into the -15F to -25F range this morning.
Cold Weather Advisory issued January 19 at 1:44AM EST until January 20 at 9:00AM EST by NWS Marquette MI
* WHAT...Very cold wind chills as low as 30 below expected. * WHERE...Keweenaw and Northern Houghton Counties. * WHEN...Until 9 AM EST Tuesday. * IMPACTS...The dangerously cold wind chills as low as 30 below zero could cause frostbite on exposed skin in as little as 30 minutes.
New Food Storage Guidelines to Reduce Human - Wildlife Interactions
In response to wolves accessing human food and garbage in and around Rock Harbor and campgrounds located on the east end of the island, new food storage guidelines to ensure the safety of visitors and wildlife are in effect.
Malone Bay Campground Shelters Closed Nights of July 29 - August 1, 2025
On these dates, the Malone Bay shelters are reserved for Agaaming Aki tribal summer youth camp. Isle Royale is within the traditional homelands of the Grand Portage Band of Lake Superior Chippewa. The 2 group sites at Malone Bay will remain open.
Duncan Bay Narrows Campground Closed Nights of August 1 - August 5, 2025
On these dates, Duncan Bay Narrows campground will be closed for shelter and privy maintenance.
USCG Navigational Buoys Not in Water Until Mid-June
Boaters: Due to USCG season start-up delays, navigational buoys are not in Lake Superior waters around Isle Royale. Use caution around navigational channels. Buoys are estimated to be put in place by mid-June.
2025 RANGER III Parking Area Construction Notice: Carpool When Possible
Houghton city will be doing construction work that affects the upper, non-gated lot for most of the 2025 summer season. Parking may become limited in the NPS available lots. To help with available parking, when possible, please carpool.
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