Tuesday, 29 November 2011 15:43

Watch out southwest Sask and southern Alberta, here comes Old Man Winter and he's grumpy

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Weather warnings from Environment Canada for southern Alberta and southwest Sask.:

Blowing snow reducing visibility to less than 1 km by Wednesday morning.

An intense low pressure system off the northern tip of Vancouver Island is expected to move across the Rockies after midnight. As the system redevelops in Southern Alberta many forecast regions will experience a brief risk of freezing rain. The precipitation will then quickly transition to snow as upslope flow develops about the low.

Snowfall accumulations of 10 cm or more should be expected by Wednesday for the City of Calgary, Kananaskis, Okotoks, Airdrie, Cardston, Lethbridge, and Cypress Hills forecast regions.

As the low moves eastwards strong northerly winds will develop behind it generating widespread blowing snow in the City of Calgary, Airdrie Drumheller, Brooks, Okotoks, Lethbridge, Cardston, Medicine Hat and Cypress Hills regions.

Winter storm warning for
Shaunavon - Maple Creek - Val Marie - Cypress Hills issued

Rain or freezing rain beginning late this evening changing to snow overnight. Snow and blowing snow on Wednesday.

This is a warning that dangerous winter weather conditions are imminent or occurring in these regions. Monitor weather conditions...Listen for updated statements.

A strong disturbance just moving onto the BC coast will quickly move into Alberta tonight spreading rain or freezing rain into Extreme Southwestern Saskatchewan late this evening. Temperatures are expected to be within a degree or two of the freezing mark, depending on location..Thus locally slippery road surfaces due to freezing rain can be expected overnight. The temperature is expected to gradually fall with the rain or freezing rain changing to snow overnight and continuing on Wednesday. The snow will be heavy at times..Especially over the higher elevation of the Cypress Hills..With total amounts near 10 cm expected by Wednesday evening. In addition..Northerly winds will strengthen throughout Wednesday afternoon into the evening..Resulting in poor visibility in blowing snow. Conditions should improve Wednesday night as the storm moves into the northern plains states.

Snow with a risk of freezing rain is also forecast in much of Southern Saskatchewan tonight and Wednesday..Generally south of the Yellowhead Highway..However the worst conditions are expected in the Cypress Hills area.

This winter storm can produce poor travelling conditions. Persons in or near these areas should be on the lookout for adverse weather conditions and listen for updated warnings.

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