Yeah this is something I've been tracking for a couple of years now actually. Got a little notebook where I log dates and weather conditions alongside any activity in the house, and the correlation with storms is honestly hard to ignore. Three separate occasions last winter where stuff moved or we heard the usual banging upstairs, all during heavy electrical storms over Lincolnshire.
My working theory is something to do with the electromagnetic environment changing - either it gives whatever's causing it more energy to work with, or it just lowers some kind of threshold. I'm no scientist but the pattern keeps showing up.
Anyone else actually logging this properly rather than just going off memory? Would be good to compare notes with someone who's got hard data rather than just a feeling. Memory plays tricks, especially with this stuff.