Not sure of a technical term for it but the rumble you're hearing is not uncommon with wind noise. It's in the lower frequencies.
You can roll off the lower frequencies with EQ. Try 100hz and see whether you need to go higher or lower but that should get you close. You could use some of the nifty noise reduction features in STP though. Depending on your content you'll have to see what does least damage to the sound.
Craig Seeman
[
thirdplanetvideo.com]