ฝัง
- เผยแพร่เมื่อ 21 ต.ค. 2024
- Severe (Microburst) Thunderstorm in Montreal - August 29th. 2018
A powerful severe microburst thunderstorm that affected the SW West Island of Montreal (and Vaudreuil to Rigaud previously) during the early- to mid-afternoon period.
The microburst thunderstorm was associated with a series of shortwave troughs, and some convergence ahead of a sharp cold front. Ahead of these features were very strong deep shearing fields, allowing thunderstorms to move from the WSW to ENE rapidly. At the same time, instability was very high (SBCAPE/MUCAPE of 2750-3000 J/kg) due to strong solar heating by late-morning and a surface dewpoint temperature of 23 C. Dry mid-level air and 500 mb SW winds of about 50 knots meant an increased likelihood for locally damaging straight-line winds. A tornado risk, or at least briefly-rotating thunderstorms, also existed before thunderstorms merged into a small bowing segment.
***Notice the small bowing segment (like an archer’s bow) on radar imagery as the line of severe thunderstorms entered the SW West Island, suggesting a higher potential for strong straight-line winds (this is near-similar to the bow that was associated with the wet microburst of August 22nd, 2017 - please see my footage of that event). Indeed, at YUL, and near Sainte-Anne-de-Bellevue, a top gust of 93 km/h was reported, making this likely a wet microburst. Widespread power failures then ensued, especially on the West Island and West of there. Rainfall rates were extreme, sweeping the ground like a broom as the wind pushed it at a sharp angle along the gust front. The lightning also eventually became frequent, but the entire event lasted for no more than 17-21 minutes (which is natural, given fast forward motion exhibited by the line).
The sound of the rain was fearsome. I have also supplied some footage of the branches that snapped from trees, as well as some downed traffic lights, and some signs.
Footage was taken in SW Pierrefonds, located in Montreal’s West Island. Radar imagery is courtesy of NOAA.
-------------------------------SOCIAL-------------------------------
Facebook: / travis.moore.5074
Twitter: / rain1290
LinkedIn: / travis-moore-751a5634
Direct TH-cam messaging: / @stormchaserfilmography
#severethunderstorm #supercell #tornado #weather #weatherextremes #thunderstorm
~Trav.~
I think I was in the Westside New York during the storm. It was wild.
Yes, the line of thunderstorms extended right through to Western New York at the time. Did you experience the thunderstorm in or around Rochester, by any chance?
Wow that rain was heavy!
Hi Sky Of The Universe!
Indeed, this rainfall was quite spectacular! The straight-line winds and lightning accompanying it really created a significant situation!
Wow 🤩 Amazing video
Thank you so much for your comment! I am more than thrilled that you enjoyed the video!
I used to life in Montreal but I am still in canada
Ah, I see - that is interesting to know! Do you still visit the island of Montreal every now and then?
Al principio del video se notaba que la tormenta iva ser muy fuerte
PD.exelente video amigo sigue asi y cuidate 👍❤
Thank you so much, Gonzalo! This thunderstorm was one of my personal favorites! :)
@@StormChaserFilmography ami tambien me gusto porque ese tipo de tormentas me gustan mucho.saludos
PD. Yo te mandaria unos videos que yo grave de tormentas para que los veas o los subas a tu canal de yutube.
@@GONZALO271 I would love to see your footage sometime!
@@StormChaserFilmography y como te mandaria los videos para que los veas
@@GONZALO271 Have you tried uploading the videos to your TH-cam channel? :)
NverrAgain
It really was quite a burst of rain from this one! Many thanks for the comment!