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Frost Advisory

Status

New Event Active alert

Start Time

Wed 09/23/2026 02:00 AM EDT

End Time

Wed 09/23/2026 09:00 AM EDT

Significance

Advisory

Impacts

Low impact

Locations Affected

Nestoria, MI ∙ Gwinn, MI ∙ Big Bay de Noc, MI ∙ White Pine, MI ∙ Fourteen Mile Point, MI ∙ Lake Michigamme, MI ∙ Cornell, MI ∙ Pictured Rocks National Lakeshore, MI ∙ Caspian, MI ∙ Loretto, MI

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Marquette MI 123 PM EDT Tue Sep 22 2026 ...FROST ADVISORY IN EFFECT FROM 2 AM EDT /1 AM CDT/ TO 9 AM EDT /8 AM CDT/ WEDNESDAY... * WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Portions of central Upper and western Upper Michigan. * WHEN...From 2 AM EDT /1 AM CDT/ to 9 AM EDT /8 AM CDT/ Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold.

Technical Header

MIZ002-004>007-009>011-013-014-084-085-231300- /O.NEW.KMQT.FR.Y.0005.260923T0600Z-260923T1300Z/ Ontonagon-Baraga-Marquette-Alger-Luce-Gogebic-Iron-Dickinson-Delta- Southern Schoolcraft-Southern Houghton-Northern Schoolcraft- Including the cities of Sidnaw, Ontonagon, Gwinn, Newberry, Grand Marais, Iron Mountain, Manistique, Ironwood, Munising, Iron River, Seney, L'Anse, Kenton, Gladstone, Escanaba, and Marquette 123 PM EDT Tue Sep 22 2026 /1223 PM CDT Tue Sep 22 2026/