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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: i-node who wrote (613053)	5/26/2011 1:06:00 AM
From: TimF	Respond to of 1577056

tornados are not at all unusual. Even powerful tornadoes F3s and up happen all the time, but F5s are a bit unusual. Maybe 1 in 1000 tornadoes or less. But the happen, and not only at rare intervals. If it was 10 a month for months on end, that would be meanginful. 2 a month for one month, means nothing. There could be some confusion about F5. Our government now uses the Enhanced Fujita Scale and EF5 is any tornado over 200mph. But 200mph under the old Fujita scale would be a strong F3 (near but not over the line to F4), and an F5 would need to be estimated at over 261 mph. We may have had (right now I only have Ted's word for it, I didn't look it up) two recent EF5 tornadoes, but those EF5 tornadoes where not necessarily F5 tornadoes under the old scale. If that's what he's talking about then I agree with you, two a month wouldn't even be rare, let alone rare enough to be meaningful.