The rules
in the Northern Hemisphere are
1 Air
circulates in a clockwise direction around a high pressure system.
2 Air
circulates in a counterclockwise direction around a low pressure system.
3 The
closer the isobars are together the stronger the wind speed.
4 Due to
surface friction up to about 2000 feet AGL above Ground Level. Surface winds do
not exactly parallel the isobars, instead they move outward from the center of
the high toward low pressure.
5 Coriolis
force is at a right angle to wind direction and directly proportional to wind
speed.
The force
deflects air to the right in the Northern Hemisphere.