Tuesday, December 25, 2012

SWS from Env. Can.

Potential winter storm boxing day into Thursday.

A low pressure system is currently intensifying over Texas and is forecast to track northeastward to pass south of the Great Lakes region late Wednesday into Thursday. Such a storm track would place
Southern Ontario on the cold side of the storm, with the potential for significant snowfall accumulations.

Present indications suggest that the snow will start over the southwest Wednesday morning, and then spread eastward to reach Eastern Ontario late in the evening. In addition, gusty northeast winds would result in local blowing snow reducing visibilities. Conditions should improve from west to east on Thursday.

Current indications suggest that areas from Windsor to Niagara and Hamilton, as well as along the St Lawrence Valley, will see the highest total snow amounts with 10 to 15 cm likely. Snowfall Warnings may be required if the warning criteria of 15 cm in 12 Hours is exceeded.

Further north from Sarnia to Toronto to Ottawa snowfall amounts will probably be in the 5 to locally 10 cm range.   (YFNWG:  I think it will be 10-15 range)
The exact track of the low will determine the snowfall amounts in each location. If the low tracks further to the south, snowfall amounts will be less, and the if the low track further to the north,
snowfall amounts will be higher.
The track of the storm will become more certain as the event draws closer.

The public is advised to monitor future forecasts and warnings as warnings may be required or extended.

Please monitor the latest forecasts and warnings from Environment Canada at www.weatheroffice.gc.ca


No comments:

Post a Comment