Weather System Speeds
How fast do high and low pressure systems move?
The speed at which high and low pressure systems
move across the face of the Earth is highly variable
and is mostly determined by the speed of the wind
near the top of those systems (the Tropopause).
This is the level at which the jet stream can form.
If there is a jet stream and it is particularly strong,
it can drag weather systems at fairly high speeds,
up to no more than about 50 miles per hour perhaps.
David R. Cook
Climate Research Section
Environmental Science Division
Argonne National Laboratory
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Update: June 2012