Weather (Patterns once they cross the state line) (Atlanta: versus, moving)

[tonygeorgia]

Why does it seem like each time a storm is moving east from Alabama to Georgia that the storms die down once they get to the Ga state line? The storms can be in all red or orange on the weather map and once those storms get to Ga they turn green. Anybody know why? Thanks!

[MattCW]

Part of it is due to the Appalachian mountains. Most everyone in Georgia thinks of them as being "up north" but heading west to Birmingham on I-20, you cross some not-insignificant mountains. Another factor is the interaction between the Gulf of Mexico and the Atlantic ocean. It's easier for warm, moist air to reach Alabama than Georgia which leads to greater instability. A lot also depends on the track of the system itself, and these and some other factors determine how the low pressure driving this will go, and how far north it can drag the moisture.

[scpatl4now]

It also has to do with the stability of the air at upper levels in this region. Atlanta actually sits on top of a divide. Look at where Peachtree Creek originates and drains. You go a little ways east and everything drains towards the Atlantic

[Atlwarrior]

Originally Posted by tonygeorgia

Why does it seem like each time a storm is moving east from Alabama to Georgia that the storms die down once they get to the Ga state line? The storms can be in all red or orange on the weather map and once those storms get to Ga they turn green. Anybody know why? Thanks!

I definetely prefer good steady rain versus the Tornado's and high winds .