Supercell Thunderstorm in Montreal - June 28th, 2010

[uragan97]

great storm

[VideographyOfStorms]

2. I know that you notice the rotation too, but you can really see it as you drag the video player along. Before I started watching this video I could tell that the storm was rotating by the storm structure the nice swirl appearance it had.

If you drag this video from 4:15 slowly to 4:35 there is great indication of rotation. I just had to dissect your video Travis. : )

[Rain1290]

Hi Nathan,

Looking back at the piece of this video that you make reference to, I believe you are correct. At the time, I was certain that there was at least some mild rotation with some of these multicell thunderstorms, but reviewing parts of the video, especially between 4:00 - 5:00, I also observe that the rotative signatures were much more distinct - these feelings were confirmed when I later discovered an F0 strength tornado 8 km SW of my residence.

Thank you for your input!

~Trav.~

[VideographyOfStorms]

@Rain1290 I agree between 4:00 - 5:00 that the the storm structrue shows evident rotation. When the storm was at a distance it caught my eye and so I started to review the video over and over again. Towards the end of the video the storms rotation went right over you didn't it? I enjoy observing other peoples storm videos and it really brings up good discussion which is awesome!

Congrats to you on the great storm capture once again!

Nathan

[Rain1290]

Hi Nathan,

The area of the storm where the most distinctive rotation was pronounced stayed to our SW - the line of storms principally moved in from the NW and headed SE. There was, however, one tornado occurrence eight kilometers SW of where I live towards the Southern tip of Saint-Anne-de-Bellevue, where trees were down and minor damage was dealt to some homes in the area. No injuries were reported, thankfully. :)

Thank you for your comment, Nathan!

~Trav.~

[VideographyOfStorms]

After reviewing this video more I do believe that you were filming some rotation. You could of time lapsed this video like it is and you will pick out that rotation easily. Amazing Storm Structure! You did a very good job! I really mean that!

[Rain1290]

Hi Nathan,

Indeed, there are clear indications of an active mesocyclone(s) within these storms. I recall noting several points of possible rotation at the time. It would be a wonderful idea to time lapse this video to truly appreciate the rotation signatures - perhaps YouTube's Video Editor possesses the function that I require.

In any case, Nathan, thank you again for your good observations, and I appreciate the good comments! I am pleased that you liked the video.

~Trav.~

[Rain1290]

Thank you!

Yes, the shelf cloud was very well defined in a nice elongated, curved dark band of cloud, and you could see that the large scud were exhibiting movement that suggests some rotative motion within the storm's updraft.

That was a great Summer evening for me, and the start of what appeared to be a unique storm season ahead.

Thank you again for your comment, Nathan!

~Trav.~

[Rain1290]

Hi Nathan,

I just made the necessary additions to the video information and its title once I re-examined the storm structure and its attributes (namely the parts that you took the time to analyse). In the end, this certainly qualifies as being a supercell thunderstorm.

I will see what I can do as far as making a time lapse. :)

~Trav.~

[Zam1Fear]

I was driving under this, according to my friends who don't know much about weather, there was rotation in some areas, and several funnel clouds according to the news.

[Rain1290]

@Zam1Fear

Both your friends and the news were correct when they reported sightings of funnel clouds. As stated in the video description, two tornadoes have been confirmed with this squall line, both of which had occurred in and around the island of Montreal. One tornado touchdown was confirmed in Saint-Anne-De-Bellevue, and the other was in Mascouche, some 30 km North of Montreal. A funnel cloud was spotted in Pointe Claire earlier that day, but no touchdown with that one.

~Trav.~

[bohrokthunder]

hey friend its been a long time so whats up?

[xtremeriepit]

je comprends les pluies d'hier soir

[hutlazzz]

beatifull