Chris
,----------------------. High Performance Mixers and
/ What's all this \ Amplifiers for RF Communications
/ extinct stuff, anyhow? /
\ _______,--------------' Chris Trask / N7ZWY
_ |/ Principal Engineer
oo\ Sonoran Radio Research
(__)\ _ P.O. Box 25240
\ \ .' `. Tempe, Arizona 85285-5240
\ \ / \
\ '" \ IEEE Senior Member #40274515
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'-| )__| :. \ Email: christrask@xxxxxxxxxxxxx
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Graphics by Loek Frederiks
----- Original Message -----
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Saturday, July 07, 2012 2:34 PM
Subject: Re: [OM] Fast and furious...
> I'm probably a poor judge of cloud altitude but I'd guess less than
> 5,000 and maybe as low as 2,000. This is what it looked like when I got
> out there with the camera but it's not much like what it looked like a
> couple of minutes before. The dark, diagonal edge at lower left is the
> roof of my house. 24mm, f/5.6, 1/320 at ISO 400
> <http://www.chucknorcutt.com/temp/Clouds%20before%20the%20storm.jpg>
>
> I had a hard time believing it could change that fast. There were cloud
> layers lined up diagonally as you see on the left. But the layers
> looked like someone had cut up a blue/gray blanket into thin strips, cut
> one edge with giant pinking shears (but with curved edge triangles) and
> then laid the strips one over the other so only the wavy edges were
> visible. All the cottony puffiness you see in my photo was either not
> there or not prominent when I first saw it.
>
> The first lightning bolt struck about 1/4 mile away just seconds before
> I made this shot.
>
Those are cumulonimbus, seldom seen at altitudes below 5,000'. They are
associated with severe wind squalls, hail, heavy precipitation, tornadoes,
and thunderstorms according to my reference guide. We see them fairly often
out here in advance of and immediately before strong storm activity. Not
something you want to fly into.
We've had two large severe thunderstorm watch areas stretching from
eastern Ohio to western Connecticut most of the day, and there's now a third
one covering most of Pennsylvania. Areas of strong storms are presently in
east central Pennsylvania and most of New Jersey. Nothing overly serious
for now, but the forecast has been for the strongest storms activity to take
place tomorrow.
Most everyone is a bit jittery after what happened last weekend. Some
people are still without power.
Chris
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