Flash freeze and Clipper

Today's high temperature of  ~ +5C will occur early this evening, approximately 8:00 PM, .   By 10 PM, the temperature is predicted to have dropped to -2C, -5 by midnight, -10 by morning.  This is accompanied by high winds.   Bare surfaces may dry up before the freeze but any accumulation of puddles will freeze up and snow banks will become rock solid.

Tuesday will see an Alberta clipper coming through, dropping approximately 5cm of snow (map courtesy of Weatherbell)

Rapid Great Lake freeze...

With the much below normal temperatures coming the next two weeks, we will see a rapid expansion of the ice cover, currently at 8.8%, especially over Lake Superior, Georgian Bay and Lake Erie.

Current Great Lake Ice cover

Mean Temperature Anomoly Day 1 thru 16

Flash freeze update 2

As of 11 AM, it's -3C, a drop of 9C since 8AM.

Flash freeze update

Cool down will come sooner than I expected. It looks like it's already started in Ottawa.   It has dropped two degrees in the last hour.  Kingston has dropped 7 degrees in the last 3 hours.

Flash freeze...

Most everything is covered in ice this morning even though it's several degrees above zero... But the cold is coming.  The cold front has reached Peterborough which has dropped at least 5 degrees in the last two hours.  I'm guessing our temps will start dropping by noon.