'He's in our hearts': Family and friends still seek answers one year after Nathan Wise’s disappearance
It’s been a year since Nathan Wise went missing and his family is no closer to finding out what happened to him.
Communities in southwestern B.C. are bracing for more heavy rain forecast to hit the region on Tuesday, as a third atmospheric river moves in.
But what exactly is an atmospheric river?
Here’s a look at some commonly used extreme weather terms.
According to the U.S. National Oceanic and Atmospheric Administration (NOAA), atmospheric rivers are “relatively long, narrow regions in the atmosphere – like rivers in the sky – that transport most of the water vapours outside of the tropics.”
The NOAA said these vapour columns move with weather systems, and can carry water vapour equivalent to the average flow at the mouth of the Mississippi River.
When they make landfall, the vapour is released as rain or sometimes snow.
Though not always the case, the NOAA said atmospheric rivers can “disrupt travel, induce mudslides and cause catastrophic damage to life and property.”
What’s more, a 2018 study led by researchers with NASA’s Jet Propulsion Laboratory suggests that due to climate change, atmospheric rivers may become slightly less frequent, but will last longer, and become more intense.
According to Brittanica.com, thermal inversion -- also known as temperature inversion – occurs when warm air overlays cool air in the lowest atmospheric region, called the troposphere.
In a normal situation without inversion, warm air is closest to the earth’s surface, with cooler air on top.
The NOAA said temperature inversion occurs because air near the ground cools more quickly than air “aloft.”
“This is most likely when the sky is clear and the wind is light/calm,” the NOAA website reads. “Cooling will occur the most readily in low places (such as valleys sheltered from the wind.)”
The problem, the NOAA said, is that because warm air rises, cooler air under the inversion can’t escape, meaning pollution and smoke becomes trapped.
According to the American Meteorological Society (AMS), a heat dome is an “exceptionally hot air mass” which develops when high pressure in the air prevents warm air below from rising.
“Thus trapping the air as if it were in a dome,” the AMS said.
According to the NOAA, heat domes occur when high-pressure atmospheric conditions combine with “influences from La Nina, creating vast areas of sweltering heat that gets trapped under the high-pressure dome.”
As heat domes are pushed over land, they can cause heat waves.
A bomb cyclone, also known as bombogenesis, is a rapidly intensifying storm.
Meteorologists use millibars – units of air pressure in the metric system – to measure atmospheric pressure.
According to the NOAA, bombogenesis occurs when a “midlatitude cyclone” rapidly intensifies, dropping at least 24 millibars in the span of 24 hours.
The agency said this happens when a cold air mass collides with a warm air mass, “such as air over warm ocean waters.”
It’s been a year since Nathan Wise went missing and his family is no closer to finding out what happened to him.
Dozens of Ontarians are expressing frustration in the province’s health-care system after their family doctors either dropped them as patients or threatened to after they sought urgent care elsewhere.
An Ottawa pizzeria is being recognized as one of the top 20 deep-dish pizzas in the world.
Amazon's paid subscription service provides free delivery for online shopping across Canada except for remote locations, the company said in an email. While customers in Iqaluit qualify for the offer, all other communities in Nunavut are excluded.
The fire burning near Fort McMurray grew from 25 hectares to 5,500 hectares over the weekend.
Russia’s President Vladimir Putin began a Cabinet shakeup on Sunday, proposing the replacement of Sergei Shoigu as defence minister as he begins his fifth term in office.
Police are searching for a male suspect after a man was “slashed in neck” on Sunday morning in downtown Toronto and died.
There were some scary moments for several people on a northern Ontario highway caught on video Thursday after a chain reaction following a truck fire.
Health Canada announced various product recalls this week, including electric adapters, armchairs, cannabis edibles and vehicle components.
English, history, entertainment, math and geography: high school trivia teams could be quizzed on any of it when they compete at the Reach for the Top Nationals in Ottawa in June.
An Ottawa pizzeria is being recognized as one of the top 20 deep-dish pizzas in the world.
A family of fifth generation farmers from Ituna, Sask. are trying to find answers after discovering several strange objects lying on their land.
A Listowel, Ont. man, drafted by the Hamilton Tigercats last week, is also getting looks from the NFL, despite only playing 27 games of football in his life.
The threat of zebra mussels has prompted the federal government to temporarily ban watercraft from a Manitoba lake popular with tourists.
A small Ajax dessert shop that recently received a glowing review from celebrity food critic Keith Lee is being forced to move after a zoning complaint was made following the social media influencer’s visit last month.
The Canada Science and Technology Museum is inviting visitors to explore their poop. A new exhibition opens at the Ottawa museum on Friday called, 'Oh Crap! Rethinking human waste.'
The Regina Police Service says it is the first in Saskatchewan and possibly Canada to implement new technology in its detention facility that will offer real-time monitoring of detainees’ vital health metrics.
Just as she had feared, a restaurant owner from eastern Quebec who visited Montreal had her SUV stolen, but says it was all thanks to the kindness of strangers on the internet — not the police — that she got it back.