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Home Return to list Frost Advisory 0010 Issued by the Duluth Forecast Office
Action: New Issued At: 2026-09-21 12:59:54 146 WWUS73 KDLH 211759 NPWDLH URGENT - WEATHER MESSAGE National Weather Service Duluth MN 1259 PM CDT Mon Sep 21 2026 MNZ010>012-018-019-025-026-034>038-WIZ001>004-006>009-220600- /O.NEW.KDLH.FR.Y.0010.260922T0500Z-260922T1300Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-North Cass-South Itasca-Crow Wing-Northern Aitkin-South Aitkin-Carlton and South St. Louis-Pine-Douglas- Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price- Including the cities of Aitkin, Hibbing, Grand Rapids, Washburn, Hill City, Hayward, Hinckley, Walker, Bayfield, Spooner, Pine City, Ely, Isabella, Phillips, Bigfork, Grantsburg, Ashland, Hurley, International Falls, Duluth, Brainerd, and Superior 1259 PM CDT Mon Sep 21 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM CDT TUESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In Minnesota, Crow Wing, Northern Aitkin, Pine, South Aitkin, Koochiching, North Cass, North Itasca, South Itasca, Carlton and South St. Louis, Central St. Louis, North St. Louis, and Northern Cook and Lake Counties. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. * WHEN...From midnight tonight to 8 AM CDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Advisory is for inland areas away from Lake Superior. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information on Northland weather, visit www.weather.gov/duluth BJH Action: Continued Issued At: 2026-09-21 23:00:34 461 WWUS73 KDLH 220400 NPWDLH URGENT - WEATHER MESSAGE National Weather Service Duluth MN 1100 PM CDT Mon Sep 21 2026 MNZ010>012-018-019-025-026-034>038-WIZ001>004-006>009-221300- /O.CON.KDLH.FR.Y.0010.260922T0500Z-260922T1300Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-North Cass-South Itasca-Crow Wing-Northern Aitkin-South Aitkin-Carlton and South St. Louis-Pine-Douglas- Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price- Including the cities of Ely, Hinckley, Grand Rapids, Washburn, Hibbing, Hill City, Spooner, Grantsburg, International Falls, Aitkin, Brainerd, Bigfork, Walker, Phillips, Ashland, Hurley, Hayward, Superior, Pine City, Duluth, Isabella, and Bayfield 1100 PM CDT Mon Sep 21 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT TUESDAY... * WHAT...Temperatures as low as 34 will result in frost formation. * WHERE...In Minnesota, Crow Wing, Northern Aitkin, Pine, South Aitkin, Koochiching, North Cass, North Itasca, South Itasca, Carlton and South St. Louis, Central St. Louis, North St. Louis, and Northern Cook and Lake Counties. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. * WHEN...Until 8 AM CDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Advisory is for inland areas away from Lake Superior. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information on Northland weather, visit www.weather.gov/duluth LE Action: Continued Issued At: 2026-09-22 03:16:41 548 WWUS73 KDLH 220816 NPWDLH URGENT - WEATHER MESSAGE National Weather Service Duluth MN 316 AM CDT Tue Sep 22 2026 MNZ010>012-018-019-025-026-034>038-WIZ001>004-006>009-221300- /O.CON.KDLH.FR.Y.0010.000000T0000Z-260922T1300Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-North Cass-South Itasca-Crow Wing-Northern Aitkin-South Aitkin-Carlton and South St. Louis-Pine-Douglas- Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price- Including the cities of Ely, Hinckley, Grand Rapids, Washburn, Hibbing, Hill City, Spooner, Grantsburg, International Falls, Aitkin, Brainerd, Bigfork, Walker, Phillips, Ashland, Hurley, Hayward, Superior, Pine City, Duluth, Isabella, and Bayfield 316 AM CDT Tue Sep 22 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...In Minnesota, Crow Wing, Northern Aitkin, Pine, South Aitkin, Koochiching, North Cass, North Itasca, South Itasca, Carlton and South St. Louis, Central St. Louis, North St. Louis, and Northern Cook and Lake Counties. In Wisconsin, Price, Ashland, Bayfield, Burnett, Douglas, Iron, Sawyer, and Washburn Counties. * WHEN...Until 8 AM CDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. * ADDITIONAL DETAILS...Advisory is for inland areas away from Lake Superior. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information on Northland weather, visit www.weather.gov/duluth LE Action: Expired Issued At: 2026-09-22 07:59:44 698 WWUS73 KDLH 221259 NPWDLH URGENT - WEATHER MESSAGE National Weather Service Duluth MN 759 AM CDT Tue Sep 22 2026 MNZ010>012-018-019-025-026-034>038-WIZ001>004-006>009-221400- /O.EXP.KDLH.FR.Y.0010.000000T0000Z-260922T1300Z/ Koochiching-North St. Louis-Northern Cook and Lake-North Itasca- Central St. Louis-North Cass-South Itasca-Crow Wing-Northern Aitkin-South Aitkin-Carlton and South St. Louis-Pine-Douglas- Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price- Including the cities of Isabella, Spooner, Phillips, Washburn, Hinckley, Aitkin, Superior, Bigfork, Hill City, Grand Rapids, Ely, Hayward, Ashland, Pine City, Hibbing, Bayfield, International Falls, Grantsburg, Duluth, Walker, Brainerd, and Hurley 759 AM CDT Tue Sep 22 2026 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... Temperatures have warmed and frost is no longer expected. $$ For more information on Northland weather, visit www.weather.gov/duluth BJH | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||