When the crosswinds get so bad that the oil light goes on, due to the oil sump not being submerged anymore, from your extreme right lean angle trying to keep the bike stable, that might be a little extreme...
I've had that happen a couple of times now. I would guess I had 40+ MPH winds coming across the road, and I was wondering if my helmet would stay attached...
I actually had to lean my body over and into the wind a couple of times to right the bike enough for the oil sump to catch!
Gotta say, passing barriers (hills) and suddenly having to re-right the bike was a little unnerving, then having to lean hard again once I passed the hill...
Of course, any winds that can lift the bike off of the road are too extreme! But, as long as the bike can stay attached to the road, and you can keep it moving in the right direction...