Quebec is bracing for potential ice jams and localized floods as warmer temperatures are expected over the next two weeks. Experts warn that a spell of unseasonably warm weather can trigger flooding, especially after a winter marked by significant ice accumulation.
Experts Warn of Flood Risks in Quebec
Alain Rousseau, a professor at the Institut national de la recherche scientifique (INRS) in Quebec City, stated that flooding can occur at any time during winter if temperatures rise sufficiently. “If it’s warm enough for several days, ice jams can form, leading to floods,” Rousseau explained.
Ice Conditions and Flood Risks
Michel Baraër, from Montreal’s École de technologie supérieure, pointed out that colder-than-normal temperatures earlier in the season have resulted in strong ice cover on lakes and rivers. He explained, “The ice is really strong and takes more energy to break, resulting in large pieces that can jam.”
This jamming occurs particularly at bridges or bends in rivers, potentially creating ice dams that can cause significant damage. Currently, the provincial water levels tracking site reported no active floods across Quebec.
Upcoming Weather Forecast
- Expected temperatures: 10°C or higher for five to six days.
- Risk of melting thick ice leading to potential flooding.
Baraër indicated that this warm spell raises concerns about winter flooding, noting that such temperatures at daytime without overnight freezes could accelerate melting. “I will monitor the situation closely due to the flooding risk,” he added.
Spring Flooding Outlook
Both Rousseau and Baraër commented on the potential for traditional spring flooding linked to snowmelt, which depends on various factors that are less predictable. Nevertheless, they observed no immediate causes for alarm regarding snowfall water content.
“So far, there’s no specific worry about our snow accumulation,” Baraër reported. Rousseau concurred, stating that this year appears to be below the average for snow levels.
Interestingly, Baraër noted that winter flooding could actually mitigate spring flood risks. He explained that if flooding occurs intensely in March, the resultant water won’t contribute to spring flooding levels.
