Author Topic: Severe Storms Prince Edward Island, Canada (Read 10884 times)

supadave_555 · « **on:** 10 August 2007, 08:12:56 AM »

New to the forum. I don't do a lot of storm gazing partially because the area I live in doesn't get very much in the way of exciting weather. My sister however in PEI sent me some awesome storm pics from the wild storm they had Saturday the 4th of August. The storm dropped heavy rain, hail, strong lightning and a small tornado up near Tignish. Also caused widespread power outages throughout the city of Charlottetown.

Dave

Jimmy Deguara · « **Reply #1 on:** 10 August 2007, 08:28:55 AM »

Hi Dave,

Quite spectacular indeed. Where abouts is this region located? Perhaps a map can help - do I assume in the Atlantic? The shelf cloud here is quite picturesque and the favourite here obviously. Gustnadoes may have occurred along the shelf cloud due to wind shear induced vorticity.

Welcome to the forum by the way.

Regards,

Jimmy Deguara

Mike · « **Reply #2 on:** 10 August 2007, 08:36:49 AM »

Hi, Dave also and can i just say 'wow' to that shelf cloud! Where do your storm systems originate from - not knowing what region you were mentioning

Mike

supadave_555 · « **Reply #3 on:** 10 August 2007, 10:16:09 AM »

The storms originated along a sharp cold front that had cut through the maritime provinces of Canada. The Pictures were taken from the province Prince Edward Island (PEI), around it's capital, Charlottetown. The shelf cloud was my favorite of the pics as well, I really love pictures of incoming storms and their characteristics. PEI isn't really known for big storms. I wish I was there to see the storms. Would this storm be characterized as a supercell or what class of thunderstorms would you guys know it is?

Circled on the map below is PEI, where these storms came from.

Mike · « **Reply #4 on:** 10 August 2007, 10:20:16 AM »

That's about as far NE as you can get by the looks of it

I'd also be interested to find out the storm type of the particular photo in question.

Mike

supadave_555 · « **Reply #5 on:** 10 August 2007, 10:26:26 AM »

Could it be from a squall line where the storms did get sparked off from a cold front and it does have the beautiful shelf cloud.
Supercells usually form by themselves or can they also be sparked off from a sharp front?

Jimmy Deguara · « **Reply #6 on:** 10 August 2007, 04:07:35 PM »

Dave,

My take on the structure from the "inside the wale mouth" picture was that it was a squall line. A supercell usually is more circular by nature and most likely delivers very large hailstones. Obviously supercells can occur ahead of squall lines and then get overtaken or embedded into the advancing squall line.

Here is an Australian example on radar that depicts this well:

http://www.australiasevereweather.com/storm_news/1998/docs/9803-02.htm

Regards,

Jimmy Deguara

supadave_555 · « **Reply #7 on:** 10 August 2007, 08:59:04 PM »

Thanks Jimmy, that radar image and animation helped a lot how it showed the formation of a supercell then the advancing squall line behind it. I am trying to understand doppler echoes more, I know that a hook echo shows rotation in a storm, that would be the main updraft, correct? What does the bow echo indicate? Is that the presence of strong gust front from squall lines?

Thanks

supadave_555 · « **Reply #8 on:** 10 August 2007, 09:48:26 PM »

Hey guys, here's a site my sister sent me from various people photographing the storms!

http://www.peiinfo.com/forums/viewtopic.php?p=186116&sid=1a0cfa0384da65c679fd1ee8db836dfe

Also, this is from 2004, but you guys would probably want to see it, it was a waterspout (obviously) that formed right next to PEI's famed Confederation Bridge.

Jimmy Deguara · « **Reply #9 on:** 11 August 2007, 01:44:30 AM »

Dave,

That is a decent waterspout - quite tall actually. I have yet to see a waterspout despite predicting conditions when they occurred and even their location. Geat to see!

Regards,

Jimmy Deguara

Michael Bath · « **Reply #10 on:** 11 August 2007, 02:43:11 AM »

Yes - terrific waterspout image. Obviously not living near the coast is a big disadvantage in having the chance to see something like this. I've only seen quite distant waterspouts or funnels - certainly nothing like this one.

regards, Michael

Mike · « **Reply #11 on:** 11 August 2007, 03:45:05 AM »

Dave, you can go to this site if you like to find out more about radar interpretation/education http://www.theweatherprediction.com/ and you'll find the radar edu to click on.

The site is most educational.

Mike

Mike in Canada · « **Reply #12 on:** 11 August 2007, 11:47:44 PM »

I think I remember seeing that pic of the waterspout by the Confederation Bridge before a couple of years ago. PEI's a nice province - I've been there a couple of times in fact.

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