Elev 636 ft, 46.87 °N, 89.32 °W

Ontonagon, MI Severe Weather Alertstar_ratehome

icon17 °F Ontonagon Station|Report|Change

Active Weather Alerts

Storm Warning
Issued: 2:45 PM Feb. 6, 2025 – National Weather Service
...STORM WARNING REMAINS IN EFFECT UNTIL 4 AM EST /3 AM CST/
FRIDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 1 PM EST
/NOON CST/ FRIDAY...

* WHAT...For the Storm Warning, west winds 30 to 40 kt with
gusts up to 50 kt and waves 11 to 16 ft occurring. For the
Heavy Freezing Spray Warning, heavy freezing spray at a rate
of 2 cm per hour or greater expected, and may rapidly
accumulate on vessels.

* WHERE...Saxon Harbor WI to Black River MI, Black River to
Ontonagon MI, Ontonagon to Upper Entrance of Portage Canal MI
and 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 Storm Warning, until 4 AM EST /3 AM CST/
Friday. For the Heavy Freezing Spray Warning, until 1 PM EST
/noon CST/ Friday.

* 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. Storm force winds and hazardous waves will capsize
or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should prepare for dangerous accumulation of ice on
their vessel. If possible, remain in port, avoid the warning area
or conduct mitigation.

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

Heavy Freezing Spray Warning
Issued: 2:45 PM Feb. 6, 2025 – National Weather Service
...STORM WARNING REMAINS IN EFFECT UNTIL 4 AM EST /3 AM CST/
FRIDAY...
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 1 PM EST
/NOON CST/ FRIDAY...

* WHAT...For the Storm Warning, west winds 30 to 40 kt with
gusts up to 50 kt and waves 11 to 16 ft occurring. For the
Heavy Freezing Spray Warning, heavy freezing spray at a rate
of 2 cm per hour or greater expected, and may rapidly
accumulate on vessels.

* WHERE...Saxon Harbor WI to Black River MI, Black River to
Ontonagon MI, Ontonagon to Upper Entrance of Portage Canal MI
and 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 Storm Warning, until 4 AM EST /3 AM CST/
Friday. For the Heavy Freezing Spray Warning, until 1 PM EST
/noon CST/ Friday.

* 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. Storm force winds and hazardous waves will capsize
or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should prepare for dangerous accumulation of ice on
their vessel. If possible, remain in port, avoid the warning area
or conduct mitigation.

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

Blizzard Warning
Issued: 8:40 AM Feb. 6, 2025 – National Weather Service
...BLIZZARD WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 1
AM EST FRIDAY...

* WHAT...Blizzard conditions expected. Total snow accumulations up
to 5 inches. Winds gusting as high as 55 mph.

* WHERE...Keweenaw, Northern Houghton, and Ontonagon Counties.

* WHEN...From 11 AM this morning to 1 AM EST Friday.

* IMPACTS...Whiteout conditions are expected and will make travel
treacherous and potentially life-threatening. Plan on slippery
road conditions. The hazardous conditions will impact the Thursday
evening commute. Strong winds could cause damage to trees and lead
to power outages.

* ADDITIONAL DETAILS...1 to 4 inches of snowfall expected before
blizzard conditions begin today.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Travel should be restricted to emergencies only. If you must travel,
have a winter survival kit with you. If you get stranded, stay with
your vehicle.

&&

Local Radar
Local Radar ImageLocal Severe Image