Alberta Foothills Weather

August 13 – Drayton Valley / Alder Flats Supercell

This turned out to be one of the most enjoyable storm tours so far this year.
We headed out mid-afternoon to troll the hills around and north of Rocky Mountain house. 26C and muggy, but heavily capped here, something was going to go to to the north along the edge of the 700mb ridge, somewhere between Edson and Rocky.
The first cells went up near Edson, then another west of Drayton Valley, and by 5:30 we were parked near Alder Flats with our lounge chair out, soaking up some nice sun while watching a supercell’s full life cycle.
It took a while to get going, and it had to eat it’s neighbor to really get going, but once it did, wow what a sight. In the final, explosive hour of it’s life it tried to spin something up numerous times before it hit the highway #22 wall and evaporated.
We got over an hour of video that I am now crunching up, will post that soon.

Carvel RADAR loop (337kb)
Visible satellite loop (5.2mb)

Supercell storm south of Drayton Valley,AB - 6:30pm Aug.13, 2011Supercell storm north of Alder Flats,AB - 7:12pm Aug.13, 2011
Supercellular Saturday afternoon show near Alder Flats,AB - 5:30pm Aug.13, 2011Funnel north of Alder Flats,AB - 6:44pm Aug.13, 2011The last of the spinny bits, hwy #22 north of Alder Flats,AB - 7:42pm Aug.13, 2011

2 Responses to “August 13 – Drayton Valley / Alder Flats Supercell”

  1. 1
    Brandon Says:

    Awesome. I should have joined the lawn chair party with you guys instead of messing with the first storm! I always had my eye on the development to its south and immediately blasted south when it got mature enough to kill its neighbor. I am looking forward to this video. After our conversation yesterday and seeing these photos, we were in close proximity to each other, but had totally different views. I will have a post up soon…

  2. 2
    Dann Cianca Says:

    Beautiful isolated supe…. so envious.

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