Yeah it did, thanks.. That's kind of what I figured. I'd also assume that the lower the MB's the less air pressure - in that an 800mb pressure level is probably closer to the surface than say a 200mb which would signify less air pressure than the 850 or say the 1012 at the surface.

So my questions then are at approximately what height are the main mb indicators - 200, 300, 500, 700 and 850 and what does each specifiy. I thought the 200 was often used for upper wind speeds/flow, but that's the only one that I'm clued in on. I think some of the others might signify moisture at a certain level or whatever, but I'm not nearly as clear as I need to be in order to interpret stuff at the level I want to interpret it.

Thanks for any add'l info.

Steve