Station Name: 9099090 - Grand Marais, MN
Station Type: Fixed
Data Source: National Data Buoy Center

Elevation Above Sea Level: 617 feet

Nearest Address:
391 MN-61
Grand Marais, MN 55604
Cook County

GPS Coordinates: 47.749, -90.341

Nearby Water Temperatures

Flood Watch issued April 27 at 12:38AM CDT until April 28 at 3:00AM CDT by NWS Duluth MN

Effective: Mon April 27, 2026, 12:38 AM
Expires: Tue April 28, 2026, 12:45 AM

* WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...In Minnesota, Cook and Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation.This also includes the Boundary Waters eastern and central area. * WHEN...From 10 AM CDT this morning through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Around 1 to 2 inches of rain is expected to fall. Eastern Cook County also has several inches of lingering snowpack. While rainfall rates are not expected to be heavy, prolonged moderate rainfall on top of saturated soils and should lead to runoff. Area rivers and streams are already running at elevated levels and could rise to minor flooding levels with runoff due to the additional rainfall. - Flood safety information can be found at www.weather.gov/safety/flood.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Flood Watch issued April 27 at 11:44AM CDT until April 28 at 3:00AM CDT by NWS Duluth MN

Effective: Mon April 27, 2026, 11:44 AM
Expires: Tue April 28, 2026, 3:00 AM

* WHAT...Flooding caused by rain and snowmelt continues to be possible. * WHERE...In Minnesota, Cook and Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation.This also includes the Boundary Waters eastern and central area. * WHEN...Through late tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Be mindful of cold, fast-moving water near rivers and streams. * ADDITIONAL DETAILS... - An additional three quarters to one and one half inch of rain is expected to fall this afternoon into tonight. Eastern Cook County also has several inches of lingering snowpack. While rainfall rates are not expected to be heavy, prolonged moderate rainfall on top of saturated soils will lead to runoff. Area rivers and streams are already running at elevated levels and could rise to minor flooding levels with runoff due to the additional rainfall. - Flood safety information can be found at www.weather.gov/safety/flood.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Flood Advisory issued April 27 at 6:00PM CDT until April 28 at 6:00PM CDT by NWS Duluth MN

Effective: Mon April 27, 2026, 6:00 PM
Expires: Tue April 28, 2026, 6:00 PM

* WHAT...Flooding caused by rain and snowmelt is expected. * WHERE...In Minnesota, Cook, Lake and St. Louis Counties. * WHEN...Until 600 PM CDT Tuesday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. River or stream flows are elevated. Flooding is occurring on area rivers that are popular for waterfall viewing. * ADDITIONAL DETAILS... - At 557 PM CDT Monday, rain and snowmelt is occurring, and will cause minor flooding. Rapid river rises will cause minor flooding in the advisory area. Between 1 and 1.5 inches of rain have fallen. - Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Grand Marais, Gunflint Lake, Two Harbors, Silver Bay, Grand Portage, Clear Lake, Lutsen, Tofte, Beaver Bay, Wolf Lake, Dumbbell Lake, George Manitou State Park, Forest Center, Sugar Loaf Cove, Temperance River State Park, Taconite Harbor, Isabella, Little Marais, Finland and Little Saganaga Lake. - Flood safety information can be found at www.weather.gov/safety/flood.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Campers and hikers should avoid flooded trail crossings. If camping at a site along or near the banks of rivers or streams, move away from those locations and seek higher ground. Trails in hilly terrain can quickly become unstable during or shortly after heavy rainfall.