Thursday, April 21, 2016

Battle of the seasons coast to coast in Canada

Spring cleaning is well underway in Montreal. 
The seasons continue a fierce battle over most of Canada, with summery weather on the west coast, a snowstorm in Newfoundland, and everything else in between. The current weather pattern is referred to by meteorologists as an omega block. Strong high pressure nearly stationary over the Great Lakes is holding the rainfall over Texas and the Gulf Coast, while keeping our region sunny and dry. The block will begin to erode slightly over the next 24 hours, as low pressure moves down the St. Lawrence Valley.

We start the morning rather chilly in Montreal at 0C (32F), but temperatures will warm rapidly to 21C (70F) under sunny skies and gusty southwest winds. Clouds will increase tonight, with showers arriving overnight, as low pressure approaches from Ontario. Friday will be windy and warm, with showers and perhaps a thunderstorm in the afternoon. After mild overnight lows near 10C (50F), the high temperature will be near 21C (70F) once again. A cold front arrives late in the day Friday, followed by clearing skies and much cooler weather for the weekend. Temperatures for the weekend will be near 12C (54F) for highs, with lows at or below freezing.

While it may feel like spring in southern Quebec, Newfoundland was blasted by a powerful snowstorm on Wednesday. (CBC Newfoundland)
Winter vs Spring
Winter and Spring continue an epic battle across Canada. On Wednesday, a powerful coastal storm brought widespread blizzard conditions to eastern Newfoundland. Over 40cm of snow fell in and around St John's, while winds gusted in excess of 100km/h. Schools, businesses and roads were closed, along with major delays to road and air travel. At the same time, interior portions of British Columbia were establishing record-high temperatures. Chilliwack, Lytton and Squamish all surpassed 30C (86F). Squamish reached 31.5C (89F) for the warmest temperature in the country, while Eureka in Nunavut was -30.5C (-23F).

Over 40cm of snow along with 100km/h winds made all forms of travel nearly impossible near St John's, Newfoundland on Wednesday. (CBC)
Texas Flooding
Major flooding continues to unfold across south Texas, after nearly 20 inches of rainfall this week. More rain is forecast over the next several days. Catastrophic damage has been reported, along with at least eight fatalities.

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