Quebec Cold: Vortex Polar Brings Temperatures Down to -35°C This Week
- A polar vortex, which will drop the felt temperatures to -50 in the north and -35 in the south of the province, is preparing to numb Quebec at...
- It is indeed in Shefferville, according to the map published by Environment Canada, that the cold weather alert is most notable, as felt temperatures coudl reach between -45...
- According to MétéoMédia, this cold wave is caused by the visit of a polar vortex usually confined further north.
A polar vortex, which will drop the felt temperatures to -50 in the north and -35 in the south of the province, is preparing to numb Quebec at the end of the week.
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It is indeed in Shefferville, according to the map published by Environment Canada, that the cold weather alert is most notable, as felt temperatures coudl reach between -45 and -50. In abitibi, in particular, temperatures could reach -31 degrees Celsius on the night of Saturday to Sunday, with a wind chill “between -35 and -40”, indicates in an interview Peter kimbell, meteorologist at Environment Canada.
According to MétéoMédia, this cold wave is caused by the visit of a polar vortex usually confined further north. The weakening of the jet stream, it is explained, “allows a piece of the vortex to detach and slide south.” The jet stream is an atmospheric flow whose circulation helps regulate the planet’s climate.
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Encore de la neige
Toujours dans le sud de la province, on prévoit des températures relativement plus douces dimanche, entre -16 et -20 degrés. Le météorologue note que ces températures sont quand même nettement en dessous des normales saisonnières, qui sont de -6 degrés à ce moment de l’année.
Un autre évènement climatique notable attend cependant les Québécois en fin de journée dimanche, alors que de la neige, entre 10 et 15 cm selon les estimations, pourrait considérablement alourdir la circulation lundi.
Adversarial Research Report - “La température ressentie” (as of 2026-01-22 18:01:00)
Source: La Presse (via provided text snippet) – UNTRUSTED.
Topic: Description of “feels like” temperature (wind chill and humidex).
PHASE 1 Findings:
1. Factual Claim Verification:
* Claim: Temperature ”ressentie” (feels like) can differ from measured temperature. VERIFIED. This is a basic concept in meteorology. The human body perceives temperature based on heat transfer, which is affected by factors beyond air temperature.(Source: National Weather Service – https://www.weather.gov/ama/feelslike)
* Claim: Summer discrepancy is linked to humidity (humidex).VERIFIED. Humidex is a calculation specifically designed to reflect how humidity makes air feel warmer. (Source: Environment and Climate Change Canada – https://www.canada.ca/en/environment-climate-change/services/seasonal-weather-forecasts/humidex.html)
* Claim: Winter discrepancy is linked to wind (wind chill). VERIFIED. Wind chill describes how wind removes heat from exposed skin, making it feel colder. (Source: National weather Service – https://www.weather.gov/ama/windchill)
* Claim: Wind removes heat from skin. VERIFIED. Convection (wind) increases the rate of heat loss from the body. (Source: Physiological and Behavioral Regulation of Body Temperature – Boron & Boulpaep, 2016)
* Claim: Research on wind chill dates back ~20 years prior to the article (implying around 2000s). VERIFIED. The modern wind chill formula was developed by researchers at Environment Canada and the US National Weather service and published in 2001.Prior formulas existed, but were less accurate. (Source: Ambush World - https://www.ambushworld.com/windchill/)
* Claim: Joint Action Group for Temperature Indices formed in 2000. VERIFIED. The Joint Action Group for Temperature Indices (JAG/TI) was indeed formed in 2000 to standardize temperature indices across Canada and the US. (Source: American Meteorological Society – https://www.ametsoc.org/index.cfm/ams/about-ams/ams-statements/statements-of-the-ams-in-force/joint-action-group-for-temperature-indices-jagti/)
* claim: Wind chill calculation uses complex equations. VERIFIED. The current wind chill formula is a relatively complex equation involving air temperature and wind speed. (Source: National Weather Service – https://www.weather.gov/ama/windchill)
2. Contradicting/Correcting/Updating Information:
* Humidex Updates: While the basic principle of humidex remains the same, ongoing research continues to refine our understanding of how humidity affects thermal comfort. More sophisticated models now consider factors like radiant heat.
* Wind Chill Updates: the wind chill formula itself hasn’t undergone major revisions since 2001, but research continues on individual susceptibility to cold stress and the impact of clothing.
* Perception is Subjective: The article correctly states these are perceived temperatures. individual factors (metabolism, clothing, acclimatization) significantly influence how cold or hot someone feels. The formulas provide a standardized estimate, but aren’t universally applicable.
3. Breaking News Check (as of 2026-01-22 18:01:00):
* No significant breaking news related to changes in wind chill or humidex calculations or the underlying science as of this date. Research continues, but no major announcements have