Starting blower?

[packmule1911]

Today I started the Jeep without the usual tap of the gas pedal. The volt gauge showed 0, and the wheel felt odd to turn. Additionally, the extra blowing sounds from the original post where there. Once I gassed it up and headed up the hill, the blowing sounds finished, the volts came up to the normal 14 reading, and the vehicle was fine.

It's been running great actually, on the whole. I did change the sepentine belt recently, and it is appropriately tight.

So now I need to figure out if the alternator is bad, or the belt is slipping.