"Nyal Williams" wrote in message
...
Tim, please explain how to do this clicking and dragging
of rectangles and what software might be needed. I
just went to a blipmap and couldn't find anything that
would drag.

I'm sorry, I thought from the context it was clear I was talking about the
Java applet at:
http://www-frd.fsl.noaa.gov/mab/soundings/java/
that Herbert Kilian was referring to, not BLIPMAPS.

I guess the context wasn't that clear after all.

Tim Ward

At 17:24 29 November 2003, Tim Ward wrote:

'Herbert Kilian' wrote in message
. com...
Martin,
In trying to understand the basics of of what underlies
Dr. Jack's
forecast, I also look at the following site (Link
is on the good
Doctor's page at the bottom:
http://www-frd.fsl.noaa.gov/mab/soundings/java/
The advantage I see in this NOAA site is in the direct
depiction of
'virtual soundings' for every hour of the forecast
day. The site
predicts the air mass structure with temps, dew points
and winds for
an airport of your choice, in my case Aurora (ARR),
Illinois. The
little Java applet that loads with the page allows
you to 'hover' your
pointer on the graph at your local altitude and predicted
temperature.
Upon clicking, the program draws the dry and wet adiabates,
showing
cloud bases and temperature spread. I usually look
at the hours from
12PM to 6PM and get at very good idea of how the day
is shaping up and
when it's dying.
Being so close to Lake Michigan I appreciate of course
the mapping of
all the other parameters on Dr. Jack's site in determining
what area
to fly in.
Herb Kilian, J7

Also, clicking and dragging out a rectangle allows
you to 'zoom in' on that
area of interest. So, for example, if you don't expect
to get to 60,000
feet that day, you can get a rectangle that only goes
to, say, 18,000.

Tim Ward