Sometimes I think the Rachio is smarter than me (thank goodness). My system was supposed to water today. Yesterday early on, it said it was going to. Then last night, before bed, it said it wouldn’t. Even though the moisture was going to be BELOW zero (okay, the calculations would show that, but Rachio bottoms out at zero). I couldn’t figure out what was going on; no real rain was expected (like 0.01"). Woke up at 4 AM (my system starts at 5 AM), and checked again. Same thing. Finally I hit upon the message that a Wind Skip would occur. Ahah! Sure enough, checking Weather Underground showed winds approaching 15 mph. It showed about 12 at the moment, but I was only reading 4-6 (we’re protected a lot by trees). So, I manually ran a fixed program I have that applied 0.1" to all zones. Probably going to do another one later, to get it through the day, then it can do its thing again tomorrow.
Something in the way of a New Suggestion I thought of, during this: When, for whatever reason, a zone goes BELOW zero water, I think it should show as a negative. We know that using a 50% Allowed Depletion, there’s still water left in the zone. But less now, as some of that has dried out. Therefore, it should take more water fo “fill” the zone up again. Rachio allows 110% water max, to allow I guess for some puddling and surface water surplus, figuring the rest will run off. I think they should go negative to allow for drying beyond the AD. Although at that point, it might make more sense to show TOTAL moisture %, 100% when completely filled, 0% when bone dry to the roots (should never get there), 50% when at the 50% AD.