Relationship between implied volatilities of different timeframes

Indeed... Looks like vol spikes when oil jumps (which, I guess, makes sense, since these jumps often occur when there's actual geopolitical uncertainty). And, obviously, shorter expiry vol is always going to move more than longer expiry. So it kinda makes sense...

 

The BBG terminal is expensive, which makes it impractical for a variety of contexts.

 

But what makes me curious is why only IV30 is jumping and not IV15 ?

 

I dunno... For this, I think you may wanna look in detail at exactly what's been happening. Like what trades have gone through during those few days.