Wasn't there last weekend but I've done the Lemp twice now and that basement is something else. First visit I put it down to poor ventilation or whatever, second time I had a full K2 spike right in the corner near the old wine cellar bit and the temperature dropped noticeably on my digital therm - like 4 degrees in maybe 30 seconds. No explanation for it.
Cold spots are one of those things that skeptics always wave away but when you're standing in one and your breath starts showing and it wasn't doing that two feet to your left, you know somethings off.
Anyone who felt it last weekend - did it seem localised or more spread across the room? That detail matters a lot when you're trying to rule out drafts and natural causes. Really curious what readings people got if they had kit with them.