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 Joplin arial photos (hi rez)

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LL

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Location : KCMO
Registration date : 2007-12-29

PostSubject: Joplin arial photos (hi rez)   Tue May 24, 2011 5:34 pm

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Hermit

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Age : 64
Location : Ascension Parish
Registration date : 2008-04-22

PostSubject: Re: Joplin arial photos (hi rez)   Tue May 24, 2011 6:35 pm

Hard to believe a single tornado could do all that.
And they say it was F4, the second most powerful category.
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LL

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Location : KCMO
Registration date : 2007-12-29

PostSubject: Re: Joplin arial photos (hi rez)   Tue May 24, 2011 7:06 pm

Hermit wrote:
Hard to believe a single tornado could do all that.
And they say it was [E]F4, the second most powerful category.

Yep. Compare that---a windspeed of appx 180 mph---with the strongest tornado yet measured---318 mph---while keeping in mind that aerodynamic drag is a cube function. Not linear, not a 4X (square) increase for every doubling of velocity, but a 9X increase. Scary stuff, wind.

Much of the reason for the heavy damage in tornadoes like Joplin's that produce only moderately heavy wind (in tornado terms) is the "Cuisinart Effect" of developed areas. 160-200 mph is enough to create a substantial debris cloud, and then those objects crash into others, creating yet more debris, and so on, until the air at ground level is almost viscous with wood shards, glass, and brick.

An old-school (pre-EF era) F5 tornado (261+ mph) leaves virtually nothing behind. It sweeps the ground clean, and will strip the asphalt from roads. All you see when those hit a populated area is level dirt, limbless tree trunks, and holes in the ground where buildings stood.
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Carlos
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Age : 60
Location : Chestnut, IL
Registration date : 2007-12-10

PostSubject: Re: Joplin arial photos (hi rez)   Tue May 24, 2011 8:54 pm

It's exciting to be near one. Especially if you have a great view. Scary beyond belief to go though one. I have been scared pretty good to have one within a few hundred yards while I was looking at it laying in a ditch.

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MisterE
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Location : Mexico City
Registration date : 2009-08-24

PostSubject: Re: Joplin arial photos (hi rez)   Tue May 24, 2011 11:11 pm

Carlos wrote:
It's exciting to be near one. Especially if you have a great view. Scary beyond belief to go though one. I have been scared pretty good to have one within a few hundred yards while I was looking at it laying in a ditch.

Shocked Shocked

Wow. I found some videos of F4 and F5īs on youtube after LL posted this. Couldnīt imagine being in something like that....scary as hell.
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Hermit

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Age : 64
Location : Ascension Parish
Registration date : 2008-04-22

PostSubject: Re: Joplin arial photos (hi rez)   Wed May 25, 2011 12:06 am

There was one in OK today that stayed on the ground for fifty miles. Shocked
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