Waves pound the shore at Peggy’s Cove, N.S. on Jan. 5, 2018. (Andrew Vaughan/The Canadian Press)

Insurers say Canadian weather getting hotter, wetter and weirder

Average number of days with heavy rain or snow across Canada has been outside norm since spring 2013

If it seems as if the weather’s getting weirder, you’re not wrong.

An index of extreme weather in Canada compiled by the insurance industry backs that up.

“Yes, we see definite trends that can’t be explained by normal variability,” said Caterina Lindman of the Canadian Institute of Actuaries.

The institute compiles what it calls the Actuaries Climate Index, a joint effort by insurance organizations across North America. It recently released its latest quarterly update — up to spring 2017.

The index begins with a 30-year average taken from 1961 to 1990 of everyday weather conditions such as temperature, precipitation, wind speed and sea level. Thresholds are set for each of those based on the top 10 per cent of readings.

For an average month, for example, about three days would be in that 10 per cent.

READ MORE: Canadian weather in 2017 saw ‘too much’ of everything

READ MORE: If 2017 weather was a downer, you ain’t seen nothing yet

Using data provided by the U.S. National Oceanic and Atmospheric Administration — one of the top American government science organizations — the index then counts how many days actually exceed that threshold. The index plots the results for every three-month period since 2016.

The method reveals a slow, gradual increase in extreme weather.

The overall Canadian index indicates that during the entire three decades between 1961 and 1990, extreme weather fell outside the range of normal variability only five times. In the last 10 years, however, that happened 12 times.

Temperatures have been climbing.

Across Canada, hot days have exceeded the normal number every quarter since the winter of 2015. The number of cold days hasn’t exceeded normal for nine years.

It’s getting wetter, too. Across Canada, the average number of days with heavy rain or snow has been outside the norm since spring 2013. In Ontario and Quebec, it’s been since winter 2008.

It’s harder to draw conclusions about wind for Canada as a whole. Likewise for sea level — unless you live in the Maritimes, where sea level has been higher than the normal range for the last 12 years.

The findings correspond with data from Environment Canada, which suggests average summer temperatures have climbed one degree since 1970 and precipitation has increased about five per cent.

Actuaries use the information in their calculation of risk as they insure lives and property, said Lindman. But they also do it to contribute to public debate.

“There’s a lot of political angst around the issue of global warming and we’re trying to be neutral sources,” she said. ”We’re just adding our voice.

“We’re in it for the long haul, so we are concerned for the sustainability of our planet.”

Bob Weber, The Canadian Press

Just Posted

WATCH: Second annual Our Best To You Craft Sale on now

Red Deerians can expect over 150 artisans, makers and designers

Red Deer RCMP look for James Holley on warrants

Holley is believed to be in possession of firearms

‘Battle of the Badges’ charity hockey game raises funds for Humboldt Broncos

Red Deer Emergency Services and RCMP will play hockey for a good cause

Buccaneers looking to loot a national championship

Footballers look to ride high octane offense to the finals

Tom Pyper’s life on the South Saskatchewan Pipeline

Red Deer man looks back on his time working on the Cantuar pump station

WATCH: Central Albertan receives award for aiding RCMP officer in arrest

Lonnie Amundson, rugby player, tackled a fleeing suspect to help ailing officer

Producer, DJ Avicii found dead at 28

Swedish-born artist Tim Bergling, was found in Muscat, Oman

Trudeau ends 3-country tour with global reputation, alliances intact

Prime Minister Justin Trudeau finds footing on the world stage after China and India controversies

Leafs’ Matthews has top-selling jersey, edging Crosby, McDavid: NHL

Austin Matthews jersey sales top Pittsburgh Penguins’ Sidney Crosby, Edmonton Oilers’ Connor McDavid

Victims grant may miss needy parents due to eligibility rules: report

Only 29 of 50 applicants between 2013 and 2017 received the grant across Canada, a federal report says

Three suspects charged with 38 crimes after Wetaskiwin carjacking

RCMP Rural Crime Reduction Project starts strong in Wetaskiwin

4-20: Pot activists continue their fight beyond legalization

Cannabis activists say there is still a lot to fight for beyond legalization

Comey memos: Trump talks of jailed journalists and ‘hookers’

A 15 page document written by former FBI Director James Comey about dealings with Trump is released to press

UPDATED: Prince Charles to be next Commonwealth leader

Prince Charles to succeed his mother Queen Elizabeth II as head of the 53-nation alliance

Most Read