Graham P Davis wrote in message
...
N_Cook wrote:

I have been monitoring the jet stream since someone post this link


http://virga.sfsu.edu/gif/jetstream_norhem_00.gif

Is it just my browser/monitor or is it not possible to distinguish 50
knot
from 150 knot winds, from that grey-scale banding?

Apart from the 150kt winds being surrounded by the grey shading of
60-150kt
winds, no. 50 and 150 are both white. [As viewed in Gwenview]

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Graham P Davis, Bracknell, Berks., UK. E-mail: newsman, not newsboy.
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And looking more closely eg
about lat 35N, long 70W on the current chart at that url
then the white patch does not appear to have an "isobar" around it which
presumably suggests it is 0 to 50 rather than 150 knots.
60 to 70 knot areas have less than 60 if there is no boundary on that side
and a boundary for the 80 knot side.
So the white patch at 45N, 160W has a boundary so 150 knot there

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