08/13/10 DISC: MN

[Jason Persoff]

Man were those some low LCLs...incredible views from the back of the storm, particularly. I haven't had a time to pull radar to check on those storms, but it's worthy to note that visually from Dean's photos, this tornado appeared to form rapidly during that particular tower's lifespan. I don't think I've ever seen a tornado hug the rear of a storm like that without some RFD kicking back some of the sunshine: this thing is clearly visible on Dean's photos.

Well done to all...2010 continues to impress .

 

[Chad Cowan]

The Hayfield tornado was rated an EF-1, luckily having missed most substantial structures. Like I said in the NOW thread, I had never seen a storm form and tornado as quickly as this one did. Within ten minutes it went from nothing on radar to a purple core on composite reflectivity, and less than fifteen minutes after that, the tornado was on the ground.

That thing had a pretty odd path. When it touched down it was a nice cone that got pretty big with multiple vorticies, then it appeared to weaken and began the occlusion process where it took a hard left turn and morphed into an elephant truck that tracked NNW. It was on the ground much longer than I figured it would be, once it began weakening. You can see my video at this link, there is a GR3 radar and VIL loop at the end: http://www.youtube.com/watch?v=sv-oCzhGMuo

Track and radar from La Crosse, WI NWS: