Why High and Dry?

[Mumster]

Any meteorologists? I'm trying to figure out why the highs are dry. And, why does the weather deteriorate when the barometer drops? The more I think about highs, lows and barometric pressure changes the more confused I get. :confused:

[pepperdawg]

The Snowgods are punishing us for all the blasphemous (sp?) :sandpit: which took place several month ago....


Serious - Haven't been on my board since last Sunday, am Jonsin' hardcore here....need :snowflakes: :snowflakes: :snowflakes: :snowflakes: (dust on crust doesnt count)....

[el-bagr]

geek answer: http://www.eece.ksu.edu/~gjohnson/wind2.pdf

easier answer: http://www.caosclub.org/freelessons/earth26.html

[Mumster]

Thanks. But, they still don't explain why it rains/snows when the barometer drops. How/where does "wet" fit into the equation?

[targheehucker]

the answer is in the geek answer that was given above. Basically high pressure air blows out from, clearing the area, and also providing air aloft with a sinking motion (not condusive to precip) Low pressure systems kinda suck air into them (which is why they are a precursor of a secs event I guess) Air aloft rises in the lows condensing the air and causeing precip. Also becasue air moves CCW in a low, mositure can be brought in off the atlantic ocean, also proving precip...

This resource gets Targheehucker's seal of approval (and also NOAA go figure):

http://www.msc.ec.gc.ca/education/teachers_guides/module8_high_and_lows_e.html