Ice-out Watch 2009 (false colour) - April 10

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Satellite image of ice break-up in Temagami, 2009

Posted Sat. Apr 11, 2009                                                                         Photo: NASA/NOAA

First signs of ice-out

Spring has been teasing us since the second week of March when the temperature occasionally slipped above freezing during the day.

Most days since hovered near zero, give or take a few degrees.

Open water, right now, is largely limited to the usual early gaps with moving water, like the Temagami, Ottawa (upstream and downstream of Timiskaming) and French rivers, the narrows on Lake Timiskaming and the mouths of rivers, like the Sturgeon on Lake Nipissing.

 

BACKGROUND:

   Historic break-up dates

 

False colour, like infrared, enhances the view of ice and snow.

       KEY

 
Black open water or thin, clear ice
Dull/ dark blue thin ice
Bright turquoise thick ice, or snow on unforested land  (e.g. clearcuts, farmland)

 

   

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