Station Name: GRAND PORTAGE RIVER AT GRAND PORTAGE MN
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 623 feet

Nearest Address:
1 Upper Rd
Grand Portage, MN 55605
Cook County

GPS Coordinates: 47.9634982, -89.6834233

Nearby Water Temperatures

yellow warning - snowfall - in effect

Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu March 12, 2026, 9:04 AM
Expires: Fri March 13, 2026, 1:04 AM

Snow and local blowing snow expected tonight into Friday morning. What: Total snowfall amounts of 15 to 20 cm. The highest amounts are expected toward the Ontario-Minnesota border with lesser amounts farther north. Reduced visibility in heavy snow and blowing snow. When: This evening through Friday morning. Additional information: Snow is expected to begin this evening and intensify overnight. Easterly winds gusting 50 to 70 km/h will result in blowing snow. Communities north of Highway 11 are expected to see lesser amounts as the most significant snowfall accumulations are expected along the international border. Conditions are expected to improve Friday morning as the system moves further east. Note that Blizzard warnings and winter storm warnings are in effect south of the international border where conditions are expected to be worse. ### Roads and walkways may be very difficult to navigate due to accumulating snow. Visibility may be reduced at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Prepare for quickly changing and deteriorating travel conditions. Allow extra time for travel.

yellow warning - snowfall - in effect

Service Notice – February 2026: The Environment and Climate Change Canada (ECCC) CAP Service undergoes changes from time to time as the business of alerting evolves. For 2026, changes are expected to include... 1) ECCC's initiative to introduce free-form polygons to represent the true threat area of a weather hazard is tentatively set for Spring 2026 deployment. Data changes will appear in CAP following this deployment and 2) other minor improvements and corrections. For more information on these changes: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/ | Notification de service – février 2026: Le service du PAC d’Environnement et Changement climatique Canada (ECCC) subit périodiquement des changements à mesure que le système d’alerte évolue. Pour 2026, il y aura des changements incluant... 1) l’initiative d’ECCC visant à introduire des polygones libres pour représenter la véritable zone de menace d’un danger météorologique devrait être déployée provisoirement au printemps 2026. Des changements de données apparaîtront dans le PAC à la suite de ce déploiement et 2) d’autres améliorations et corrections mineures. Pour plus d’informations sur ces changements: https://comm.collab.science.gc.ca/mailman3/hyperkitty/list/dd_info@comm.collab.science.gc.ca/

Effective: Thu March 12, 2026, 2:57 PM
Expires: Fri March 13, 2026, 6:57 AM

Snow and local blowing snow expected tonight into Friday morning. What: Total snowfall amounts of 15 to 20 cm. The highest amounts are expected toward the Ontario-Minnesota border with lesser amounts farther north. Reduced visibility in heavy snow and blowing snow. When: This evening through Friday morning. Additional information: Snow is expected to begin this evening and intensify overnight. Easterly winds gusting 50 to 70 km/h will result in blowing snow. Communities north of Highway 11 are expected to see lesser amounts as the most significant snowfall accumulations are expected along the international border. Conditions are expected to improve Friday morning as the system moves further east. Note that Blizzard warnings and winter storm warnings are in effect south of the international border where conditions are expected to be worse. ### Roads and walkways may be very difficult to navigate due to accumulating snow. Visibility may be reduced at times. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

Prepare for quickly changing and deteriorating travel conditions. Allow extra time for travel.

Winter Storm Warning issued March 12 at 3:21AM CDT until March 13 at 1:00PM CDT by NWS Duluth MN

Effective: Thu March 12, 2026, 3:21 AM
Expires: Thu March 12, 2026, 3:30 PM

* WHAT...Heavy snow expected. Total snow accumulations between 4 and 8 inches except between 6 and 12 inches for northern Iron County and the higher terrain of the North Shore. Winds gusting as high as 35 mph. * WHERE...In Minnesota, Koochiching, North Itasca, Carlton, St. Louis, and Northern Cook and Lake Counties. In Wisconsin, Ashland, Bayfield, Douglas, and Iron Counties. This includes the Tribal Lands of the northwestern area of the Lac du Flambeau Band, the Fond du Lac Band, the Red Cliff Band, the Bad River Reservation and the Bois Forte Band, Lake Vermilion, Nett Lake and, Deer Creek areas. Other locations including the Apostle Islands National Lakeshore, Madeline Island and Voyageurs National Park. The entire Boundary Waters is also included. * WHEN...From 1 PM this afternoon to 1 PM CDT Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...Snowfall rates will be intense, possibly exceeding 1" per hour Thursday afternoon and evening.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. In Minnesota, call 511 or visit www.511mn.org for Minnesota road information. In Wisconsin, call 511 or visit www.511wi.gov for Wisconsin road information.

Blizzard Warning issued March 12 at 3:21AM CDT until March 13 at 1:00PM CDT by NWS Duluth MN

Effective: Thu March 12, 2026, 3:21 AM
Expires: Thu March 12, 2026, 3:30 PM

* WHAT...Blizzard conditions expected. Total snow accumulations between 10 and 15 inches. Winds gusting as high as 45 mph. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...From 1 PM this afternoon to 1 PM CDT Friday. * IMPACTS...Visibilities will drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. The hazardous conditions will impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...Snowfall rates will be intense, possibly exceeding 2" per hour Thursday evening.

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. Call 511 or visit www.511mn.org for Minnesota road information.

Blizzard Warning issued March 12 at 12:20PM CDT until March 13 at 1:00PM CDT by NWS Duluth MN

Effective: Thu March 12, 2026, 12:20 PM
Expires: Fri March 13, 2026, 12:30 AM

* WHAT...Blizzard conditions expected. Total snow accumulations between 10 and 15 inches. Winds gusting as high as 45 mph. * WHERE...Southern Cook and Southern Lake Counties. This includes the Tribal Lands of the Grand Portage Reservation. * WHEN...Until 1 PM CDT Friday. * IMPACTS...Visibilities will drop below 1/4 mile due to falling and blowing snow. The strong winds and weight of snow on tree limbs may down power lines and could cause sporadic power outages. Whiteout conditions are expected and will make travel treacherous and potentially life-threatening. The hazardous conditions will impact the Thursday evening and Friday morning commutes. * ADDITIONAL DETAILS...Snowfall rates will be intense, possibly exceeding 2" per hour Thursday evening.

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. Call 511 or visit www.511mn.org for Minnesota road information.