Tag: British Columbia

Alberta

Long-Duration Snowstorm Brings Early Season Chill Across British Columbia…

A strengthening Colorado Low will bring a long-duration, widespread snowstorm to portions of British Columbia, Alberta, and Saskatchewan before lingering into Manitoba and Northern Ontario.

A weak low is expected to bring a snowstorm to the mountains of British Columbia and Alberta on Friday lasting through to Sunday. Strengthening into the weekend, on Saturday, a strong low is expected to form near the Wyoming/Colorado border before moving east towards Northwestern Ontario before phasing out and reorganizing into a low which will bring widespread rain to portions of Northeastern and Southern Ontario.

WESTERN PRAIRIES & SOUTHERN BRITISH COLUMBIA SNOWFALL TOTALS

Accumulations from the snowstorm will vary greatly throughout Southern Alberta/Saskatchewan with the heaviest accumulations throughout the mountains. Current guidance suggests snowfall totals will be highest between 30 and 60cm, locally higher towards 70cm+, in the extreme southwestern portion of Alberta throughout Waterton Lakes National Park towards Pincher Creek, where the extent of red is shaded in the forecast map. Isolated totals near 100cm may be possible. Along the United States border extending into the mountains, highlighted in pink, snowfall totals between 15 and 30cm are likely with pockets of snow towards 40cm possible throughout the mountains. The highest snowfall totals are due to the position of the low creating an ‘up-sloping’ event where the snow is driven up and into the mountains and foothills allowing for significant accumulations. Snowfall ratios in this region will likely peak around 10:1 (10 inches of snow for 1 inch of water).

Down the mountains into the foothills and into the Central-Northern Rocky Mountains, Purcell Mountains, and Northern Selkirks Mountains, snowfall totals will be limited to 10-20cm with local totals towards 20-30cm. This includes Banff and Cranbrook, as well as, this region is highlighted in purple on the forecast map. In Extreme Southern Alberta, outside of the foothills will likely see between 10-20cm of snow. This includes the City of Lethbridge extending towards the southeast, also seen in purple on the forecast map. The snowfall totals may significantly drop off outside of the mountains and foothill regions as temperatures on Saturday through to Monday across the lower Prairie regions will be within 2 degrees of 0, meaning, snow may change over to rain at the lower elevations. This would significantly limit accumulations. The temperature change would be most prevalent in Extreme Southeastern Alberta into Southern Saskatchewan. Snowfall totals in this region are expected to be between 5-15cm are likely, which can be seen in purple on the forecast map, and circled. If temperatures trend cooler for this region, 10-20cm wouldn’t be out of the question for Southern Alberta and Southwestern Saskatchewan, extending as far in to include Shaunavon. Snowfall ratios will peak around the 3:1 and 5:1 range.

A general 5-15cm, locally up to 25cm, can be extended throughout the Rocky Mountains from the Lake Lousie region northwest into British Columbia extending towards Fort Nelson, as well as the Southern Selkirks Mountains and portions of the Monashees and Cascade Mountains. This would include Jasper and Grande Cache. This is highlighted in dark blue on the map. Across Southern Alberta and Southwestern Saskatchewan, a widespread 5-10cm, locally 15-20cm can be expected, also highlighted in dark blue. This includes Calgary, Medicine Hat, Swift Current, Rockglen, and Penticton. Elsewhere in light blue, flurries are likely. Snowfall totals around 5cm with local totals to 10-15cm are likely around Kelowna and Vernon. Snowfall totals will range under 5cm with local pockets sticking up to 10cm for portions of Saskatchewan and Central Alberta. Generally, the snow will melt-on-contact for a majority of the event for these highlighted regions, including Red Deer, Regina, and Saskatoon.

Environment Canada has issued widespread special weather statements across Southern, Western and Central Alberta, as well as, portions of British Columbia. Winter storm watches have been issued ahead of the snowstorm for Pincher Creek, Waterton Lakes National Park, Canmore, Okotoks, Cardston, and Fort Macleod regions.

Weather alerts can be monitored on Environment Canada’s website: https://weather.gc.ca/warnings/index_e.html

Projected snowfall totals between Friday, September 27th to Monday, September 30th

MANITOBA & ONTARIO SNOWFALL TOTALS

As the snowstorm producing low-pressure system crosses east, bringing the precipitation with it, light to moderate showers are likely across Southern Manitoba, and most of Northern Ontario. Alongside these showers, a band of flurries to light snow will cross portions of Central/Northern Manitoba into Far Northern Ontario. Snowfall totals less than or near 5cm are likely due to the snow mainly being melt-on-contact. A few pockets across Southwestern Manitoba and into Far Northern Ontario may see local totals towards 10cm. The highest confidence for locally higher totals is circled in red.

Projected snowfall totals between Monday, September 30th to Wednesday, October 2nd

BLOWING SNOW & STRONG WINDS

As the snow falls across the Southern Prairies, increasing wind speeds will bring the threat for hazardous traveling conditions in fast accumulating snow and falling snow. Current guidance suggests wind speeds will range from 30-50km/h across Southern Alberta and Southern Saskatchewan later in the day on Saturday extending through to Sunday morning. During the afternoon and evening on Sunday, winds will likely increase to 40-70km/h before 40-60km/h wind gusts settle in across Saskatchewan, Manitoba, and Ontario as the system weakens and phases out beginning mid-day Monday.

Blizzard conditions are possible.

Blowing snow and falling snow may make travel hazardous on Highway 1, 2, 3, and 4 across Southern Alberta and on Highway 1, 13, 18, 21, and 37 in Southern Saskatchewan.

British Columbia

How Two Storms Dancing in the Pacific Will Impact…

What is a dancing storm? Good question. The Fujiwara effect “dancing storms” refers to the interaction between two cyclonic vortices. When two low-pressure systems near each other, they begin to orbit one another around a mid-point separating the two systems. The effect gets its nickname from the interaction of two systems appearing to “dance” around one another. Read more here.

A pair of systems interacting in the Gulf of Alaska through the weekend. By Saturday afternoon, the systems merge into one stronger storm and stall in the Gulf. Heralding waves of precipitation & unsettled conditions along the coast.

WINDY DAY SATURDAY ALONG THE HAIDA GWAII ARCHIPELAGO

Southeasterly winds will pick-up along the channel separating the islands and the Mainland, Saturday. The most powerful wind & waves will remain off-shore. Still, gusty winds & rainfall along Vancouver Island and the Archipelago will lead to a lousy day. Wind gusts between 60-90km/h are likely.

WET ALONG THE COAST WITH SNOW IN THE MOUNTAINS

An unsettled couple of days across the Lower Mainland & Vancouver Island. 25-35mm of rainfall is expected across Vancouver & Victoria through Friday & Saturday. This will be a beneficial rainfall across the region, where its been an unusually-dry start to spring. Unfortunately, the rainfall isn’t expected to penetrate far enough into the interior to bring any relief to the dry conditions.

Projected Rainfall through the weekend.

A more prolonged and significant rainfall is expected along Western sections of Vancouver Island. 40-70mm of rainfall is expected by the end of the day Saturday. The mountain peaks along the coast will see heavy snow – mixing or light accumulation is possible along sections of Highway 19.

Heavy snow expected above 1500m.
Alberta

Major Snowstorm Slices Through British Columbia & the Prairies

A Major Pattern reversal is underway across Western Canada. Cold air will descend from Northern Canada beginning Friday, coinciding with an extended period of heavy snowfall.

Our forecasting team will be closely monitoring the progression a major winter storm beginning Thursday evening. The Winter Storm isn’t expected to bring heavy snowfall rates, but rather an extended period of light-moderate snow over the next 48 hours.

The heaviest snowfall totals are expected through the Rockies; across British Columbia and Alberta. Where in excess of 50cm of snow is expected to fall. Even major cities, such as Edmonton won’t escape the wintry weather. With 30 or more centimeters projected to fall, over the next couple days.

Projected Snowfall Totals through Saturday PM
**Click map to make it zoomable.
British Columbia

British Columbia Prepares for the Wildfire Season

As the sun sets a helicopter prepares to dump water on a blaze near Williams Lake, BC Wednesday, July 12, 2017. Jason Payne – Vancouver Sun

After a devastating forest fire season in 2017, tougher penalties in an effort to reduce wildfire risk, have been made law this year – ahead of the dry season. Read more about new failure to comply measures put into law.

It is common for summer temperatures to peak between 30-35 degrees Celsius during the summer months in the Southern Interior. Coupled with long stretches of dry, sunny weather, and low relative humidity. 

Fire Rating July 17th, 2018. Natural Resources Canada.

Hot and dry weather will be the story through the beginning of this week with the Southern Interior reaching the low 30s. In Kamloops, an air quality statement, together with a heat warning have been issued. A respite from the heat is expected mid-week with the arrival of upper-level trough. 

As early as Thursday & Friday, cooler temperatures will spread across the Interior. A chance of rain and cloudier conditions will be welcomed in some communities – but others who see lightning could see new fires.

Current forest fires burning in British Columbia. 

On Vancouver Island, sunny and pleasant conditions are expected to persistent for many days. Coupled with low-humidity, the Victoria vicinity will see rising fire ratings. 

Unfortunately, high-pressure will return to British Columbia next week. Temperatures will once again soar into the high 20s or 30s. The dry season may persist well into August this year.

British Columbia

British Columbia Coastal Snow: Including City of Vancouver



A trough of low pressure is determined to impede coastal regions of British Columbia, including the city of Vancouver and vicinity.

Snow will begin Friday morning and continue through the majority of the day across the aforementioned province. Snow will further linger in the form of flurries through early Saturday morning, bringing in light accumulations to what accumulated as a majority, through the day on Friday.

The city of Vancouver and vicinity will receive accumulating snow and lengthier commutes should be expected.

Regions along the immediate coast will receive the lower-end of the amounts listed in the “legend”, while regions further inland will receive amounts synonymous to the higher-end of the amounts depicted.

Gusty winds across the entire region will be of concern for localized blowing snow.

Be prepared for rapidly accumulating snow and deteriorating conditions across coastal regions and major Metropolitan regions.

 

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