A derecho is a storm that extends at least 240mi
with winds >58mph (not 85 --heck, thats up in the record-high
range, of this recent one). Not that it matters much to the various
people in its path (that it came a ways and will keep going).
Okay, close : here's Wikipedia
[ QUOTE ]
According to the National Weather Service criterion, a derecho is classified as a band of storms that have winds of at least 50 knots (93 km/h; 58 mph) along the entire span of the storm front, maintained over a time span of at least six hours.
[/ QUOTE ]
In the land of big winds (U.S. Congress, et al.

), nevertheless
we got hammered and lost power for days,
just as it was getting extra-toasty! What could be worse?
Well, I heard that Congress was going to look into doing something
about it!
Anyway, to my casual observations, it seems as though OAKS were
more in the horizontal position than other big trees, such as tulip
poplars. And some of them sported rotted, carpenter-ant'd (?)
ground parts; some just upturned their big rootballs (!). YMMV.
Our area's big tulip trees shed a lot of limbs, but I didn't see any
go down.
*kN*
ps:
I'll try a photo : this was taken not too far distant from home,
where I have mid-wk bike rides. The horizontalness is slightly
<u>below</u> the house's roof line; but I don't think that this is
where fatalities occurred.