A major atmospheric river brought severe rains completes to parts of Vancouver Island and the Lower Mainland this weekend break, causing roadway washouts and substantial flooding.
We’ll damage down the numbers right here, supply context, and unwind one of the most substantial rains occasion considering that November 2021.
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Storm amounts to from Friday to Sunday early morning
Effingham forestry terminal on Vancouver Island tape-recorded over 300 mm of rains considering that Friday, emphasizing the severe optimums from this effective climatic river. Several areas saw a month’s well worth of rainfall in simply 2 days.
Here are a few of the remarkable total amounts:
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Coquitlam (Burke Mountain): 266 mm
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Sheringham: 195 mm
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West Vancouver: 189 mm
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Port Melon (Howe Sound): 187 mm
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Vancouver Harbour: 173 mm
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Squamish: 153 mm
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White Rock: 116 mm
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Vancouver International Airport (YVR): 119 mm
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North Cowichan: 101 mm
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Port Alberni: 94 mm
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Victoria (University): 66 mm
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Comox: 42 mm
Daily amounts to:Oct 19
That notes the wettest day considering thatSept 18, 2004 (91.6 mm), and the second-wettest October day on document (afterOct 16, 2003, with 85 mm).
November 2021 contrast
For more context, allow’s contrast this occasion to the record-breaking rainfall of November 2021.
Most terminals on the South Coast tape-recorded greater rains throughout the November 2021 occasion, besides Burke Mountain and Vancouver Harbour, which saw even more rainfall this time around. Severe flooding took place in locations consisting of Coquitlam, West Vancouver, Surrey, and North Vancouver, with southwestern Vancouver Island additionally greatly influenced.
November 2021. (NASA)
This climatic river might have had a much more substantial influence on local locations withinMetro Vancouver Vancouver International Airport (YVR) is most likely to tape rains quantities a little more than throughout the 2021 occasion. However, with a lot less snowmelt this time around, as the occasion took place later on in the period, the flooding dangers were rather reduced.
A Category 4 climatic river is unusual for this component of the coastline, yet it still fades in contrast to the Category 5 occasion in November 2021. It pressed well right into the Interior and up the Sea- to-Sky passage.
Category 4 and 5 climatic rivers describe the highest degree of dampness transportation, frequently causing severe rains and flooding.
That occasion additionally saw a lot less of a rain-shadow impact on southerly Vancouver Island and the Fraser Valley.
With data from Tyler Hamilton, a meteorologist at The Weather Network.
