Friday, February 25, 2011

Weather Discussion - Friday February 25th 2011

Today's post will be short and sweet as I have alot going on today.
First off.... the storm system that moved into Southern Ontario today was not much of a snow maker for many areas. Snowfall was pretty much confined to areas along the north shores of Lake Erie with 5-10cm reported there. Upwards of 15 or so has been reported around Niagara Falls. Futher north of that line totals dropped off very quickly.
We were always on the nortern fringes of this storm, but as it approached it was a bit further south than orginally expected, thus the lower snowfall amounts.

There is another weak system that will cross the regions later in the day Saturday that will give a coating to a few cm for the region.

Temperatures will be below seasonal values for Friday night and Saturdy, but that will be short lived as milder air begins to creep in Sunday.

Normal Highs currently range from +2 in the SW to -1 north of the GTA

The big story will be the milder air and heavy rain moving in for Sunday and Monday. Rain,may start as wet snow, but quickly change over to straight rain as the milder temperatures move in. 20-30mm can be expected from this system and temperatures may reach double digits across the region along with gusty southerly winds. It will turn colder behind the storm with a brief changeover to snow, but the majority of the precipitation is on the warmer side of the storm.
GFS Model Forecast for Monday.

Long Range Models continue to see wild temperature swings into the first part of March. Still along  way off,but there is a very large storm system for March 5th that will be snow according to the current model guidance. That will likely change, but it's worth keeping an eye on.


The warmest temperature across Southern Ontario yesterday was:

Toronto City Centre Airport  +3°C @4pm

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