Right so this has been bugging me for ages and nobody in my real life is remotely interested in talking about it, so here goes.
I've been running spirit box sessions in my flat for about two years now and I swear the responses get noticeably stronger when there's a storm rolling in off the Forth. Not just audio quality either, I mean the actual coherence of whatever's coming through. Last November we had that brutal low pressure system sitting over Edinburgh for three days and I got some of the clearest responses I've ever recorded, full words not just fragments.
My working theory is that electromagnetic fluctuations from storm activity are basically amplifying whatever mechanism allows these things to happen. Infrasound maybe, or static charge buildup affecting perception. I've seen some ancient sites research suggesting similar ideas around atmospheric pressure and heightened experiences.
Anyone else actually tracking this properly rather than just going "oooh spooky storm"? Would be good to compare notes with people who are actually paying attention to conditions when they document activity rather than just after the fact.