Ice Storm in Otsego, Michigan

Flat ice accretion reached 0.25 inches between 2100 and 2300 with the bulk of this occurring between 2200 and 2300; an additional 0.10 of flat ice accretion was reported by midday, bringing the storm total flat ice accretion to 0.35, ending 1400 on the 11th. The NWS Gaylord, MI forecast office measured nearly 0.40 of flat ice by 1300 with radial ice accumulation on tree limbs up to 0.20.

A storm tracking out of the southwestern US along a stationary boundary stretched across Michigan resulted in record high temperatures on the 9th, followed by cooler temperatures on the 10th. Moderate to heavy rain and a few rumbles of thunder moved into northern Lower Michigan during the late evening on the 10th, with primarily snow and sleet across the eastern UP until later, when the warm nose aloft tracked far enough northward to bring some freezing rain to the eastern UP as well. Cold surface temperatures resulted in additional freezing rain and sleet during the morning of the 11th with a second round of precipitation moving largely across northeast Lower Michigan, and a little snow in the afternoon with gusty winds resulting in blowing snow and icy roads.