Friday, July 24, 2009

The NH Tornado, 1 year after

Exactly a year ago on this date, NH experienced a rare tornado; not only rare for here (NH gets only one or two tornadoes a year), but rare, period: Last year's tornado stayed on the ground for 80 minutes and covered 50 linear miles (80km), passing over areas with significant elevation changes--- NH ain't Kansas, Toto.

I wrote about it in three posts here:

Part One:
http://fredlanga.blogspot.com/2008/07/tornado-corridor-impressions.html

Part Two:
http://fredlanga.blogspot.com/2008/07/tornado-corridor-impressions-pt2.html

Part Three:
http://fredlanga.blogspot.com/2008/08/tornado-corridor-impressions-pt3.html

Now, a year on, researchers say that a single cloud break in Massachusetts enabled enough highly-localized heating to trigger the unusual storm, which was embedded in a frontal passage. But researchers are still at a loss to explain why this tornado wasn't disrupted as it passed over the high hills of NH's lakes region; and why it persisted so long.

If this sort of thing interests you, here are a bunch of good resources:

Collection of videos and images:

This was shot within a couple miles of where I live:
http://www.youtube.com/watch?v=rrIbNiWPQNg
(see also the "related" videos)

A different collection:
http://www.mahalo.com/new-hampshire-tornado

The local news outlet retrospective:
http://tinyurl.com/m9w2wo

As a coda, about a week ago, a strong thunderstorm rolled through, producing a microburst that uprooted trees and did some housing damage within about half a mile (0.8km) of last year's tornado track here in Northwood. The folks who live there must be wondering what they did wrong....

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