Joe wrote:
The chicken or the egg? 
Which came first? The low pressure or the storm?
In simple terms, help a dummy understand if the low pressure causes the storm,
or is the low pressure a byproduct of the storm?
And why in the hell does the pressure rise and fall?
Why does one have to precede the other? Why can't they
co-evolve?
Pressure rises because air moves into a column. More
air in the column = more weight = higher pressure.
Scott