Freeze-up Watch 2017 (false colour) - Dec 16

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Satellite image of freeze-up in Temagami, 2017

Image courtesy of NASA/NOAA                                                 Posted Dec 16, 2017

A great image today caught by using false colour to highlight the open water on Lake Temagami, our benchmark for calling freeze-up. The arrow indicates a common late, freeze-up site, just west of Alexander Island (background in photo below, Dec. 15 by Ron Miller). No other open water is visible on the mid-day image from space.

The other open lakes are typical late holdouts: Wanapitei, Timiskaming and Kipawa lakes, and Ottawa River.

Compare to December 18 last year.


Aerial view of last open water, Lake Temagami


Black open water or thin, clear ice
Dull/ dark blue thin ice with little or no snow cover
Bright turquoise thick ice, snow-covered ice or snow on unforested land  (e.g. clearcuts, farmland)

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