One context, two completely different impressions in Quebec

Same air, two realities

The word has been on almost everyone’s lips for several days: a trough dominates the atmospheric context in Quebec. This situation favors a flow of fresh air from the north. In addition, this situation creates instability, which means omnipresence of clouds and frequent showers. The entire province found itself under its influence and even part of the eastern United States. However, even if Northern Quebec is struggling with the same air, the consequences are different.

Abnormal situation

Southern Quebec finds itself with temperatures below seasonal normal, while for regions further north, it is the opposite. For example, the town of Kuujjuaq will be entitled to a maximum of 15°C on Sunday. In Montreal, the mercury would barely cross this threshold. This situation is therefore abnormal if we take into account the average for May 12. In addition, models indicate drier weather for northern areas.

The world upside down

The northern regions benefit from abnormally warm temperatures during this trough regime. Conversely, southern Quebec is experiencing negative anomalies. In fact, in certain areas south of the border, notably in New York, even more abnormally cold mercury is expected between now and May 15.

Higher risk

Note that the drier conditions prevailing in Northern Quebec are not without consequences. At this time of year, the ground dries out very quickly when precipitation is delayed. Therefore, the risk of fire increases.

With the collaboration of Patrick Duplessis, meteorologist.

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