Frost, freeze possible tonight: Michigan areas where you should cover your flowers, plants

The first day of fall is rushing in on a brisk north wind. It’s also carrying frost and freeze warnings for parts of Michigan’s Upper and Lower peninsulas. If you’re in these targeted areas and you have any vegetables, tender herbs or blooming flowers left outdoors that you want to save, you might want to cover them individually or at least drape them with an old sheet or tarp for protection.

Most of the Upper Peninsula and the northern top third of the Lower Peninsula are covered by a patchwork of frost advisories and freeze warnings issued this afternoon by the National Weather Service.

Here are the areas it might get cold enough to damage plants:

  • The National Weather Service in Grand Rapids has issued a Frost Advisory for the counties of Lake, Osceola and overnight tonight, with temperatures expected as low as 33 degrees. This advisory includes the cities of Baldwin, Clare and Reed City.
  • In the Grand Rapids area and other parts of West Michigan, patchy frost is possible. “With dewpoints just above freezing, little to no wind, and clear skies, this is a good recipe for frost,” NWS meteorologists said in the forecast notes.
  • Frost or an outright freeze also might be seen in the Gaylord area, according to the NWS team there: “A chilly night is also expected tonight into Friday morning around inland areas. Temperatures are expected to drop into the low to mid 30s by daybreak Friday.”
  • A Freeze Warning has been issued for the counties of Kalkaska, Crawford, Oscoda, Missaukee, Roscommon and Ogemaw. This includes the cities of Kalkaska, Grayling, Houghton Lake, Lake City and West Branch.
  • A Frost Advisory has been issued for the counties of Cheboygan, Presque Isle, Antrim, Otsego, Montmorency, Alpena, Alcona, Wexford, Iosco, Gladwin and Arenac. This includes the cities of Cadillac, Tawas City, Gladwin, Gaylord and Rogers City.

Frost Advisories and Freeze Warnings have been issued for parts of Michigan for Thursday night and Friday morning. Image provided by the National Weather Service.

  • In the Upper Peninsula, it will be colder. The National Weather Service has issued a Freeze Warning for the counties of Baraga, Marquette, Alger, Iron, Dickinson, Menominee, Delta, Schoolcraft and Houghton. This includes the cities of Marquette, Munising, Grand Marais, Iron Mountain, Escanaba, Gladstone and Manistique. From the NWS warning: “Sub-freezing temperatures in the upper 20s to around 30 expected inland from the lakes. Locally colder across Iron County and typically colder spots with overnight lows in the lower to middle 20s expected.”
  • There is also Frost Advisories for parts of the Upper Peninsula, including the area of ​​the Keweenaw Peninsula, where overnight temps could hit the lower 30s. The counties covered by the NWS advisories: Keweenaw, Ontonagon, northern Houghton, Luce and Gogebic, as well as western Chippewa and western Mackinac counties. This includes the cities of Copper Harbor, Newberry, Hancock, Houghton and Ironwood.


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