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October 2019 storms its way into Montreal record books

Saturday, November 2nd 2019, 1:35 pm - Record rain made for a soggy month in Montreal.

An active storm track and a helping of tropical moisture have pushed October 2019 into the record books for Montreal.

The soggy month is unofficially the wettest on record for the city, with a hefty 259.6 mm recorded at Environment Canada's observing site. That sinks the previous record-holder, September 1975, by more than 30 mm.


Early autumn is traditionally a damp part of the year for southern Quebec, with 4 of the top 10 wettest months on record falling in October. While there are a variety of factors at work here, much of the blame can be placed on the jet stream starting to change with the seasons and directing more potent storms, like Colorado lows, into the region.


Tropical moisture plays a role, too; in some cases, a significant role. One of the wettest days this past month, October 27, saw remnant moisture from Tropical Storm Olga swamp the area. The third-wettest month on record, August 2011, brought extensive flooding to Quebec courtesy of Hurricane Irene, which maintained tropical storm strength to the Maine-Quebec border and brought as much as 200 mm of rain to the Eastern Townships.

Thumbnail image courtesy: Alexander Lomayev

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