***I STRONGLY RECOMMEND USING EARPHONES/HEADPHONES (BASS AMPLIFIED) TO HEAR THE MORE NATURAL SOUND OF THE THUNDER***
A video compilation highlighting a pair of isolated non-severe thunderstorm clusters that affected the island of Montreal during the early-afternnon, and then during the mid-afternoon period. The first thunderstorms affected Lachute and Rigaud-Saint-Lazare, and near Huntingdon, while the second set of thunderstorms affected those areas, and eventually Western portions of the island of Montreal and Western Laval towards extreme North-central parts of the island of Montreal.
Although substantially cloudy during the morning period, thunderstorms began to develop in response to steep mid-level cooling rates and strong lift ahead of a shortwave trough series. Some lift ahead of a pair of cold fronts also helped with the overall lift that had been present. Despite limited moisture/humidity, the steep mid-level cooling and eventual brief solar heating prior to the second thunderstorm cluster, unseasonably high instability managed to materialize. Furthermore, strong deep-level shearing fields allowed for some sustained, organized and fast-moving deep convection.
The video highlights the thunderstorms forming in the distance before producing heavy rain over my area, at the Western end of the West Island. Occasional thunder was eventually heard with the second thunderstorm cluster, and some lightning was eventually observed over the West Island. Heavy rain eventually ensued. A “whale’s mouth” formation was observed (by 4:01 into the video), as represented by the roiling/turbulent feature of the updraft area.
Footage was taken from SW Pierrefonds, located in Montreal’s SW West Island. ***Note that radar imagery is missing for the second cluster of thunderstorms, as revealed when the radar is forwarded at the beginning of the video.
~Trav.~
Негізгі бет Thunderstorm in Montreal - October 7th, 2020
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