I got a surprise this week. Rain percentage forecast was 80 percent, yet my sprinkler system came on and was running during a heavy thunderstorm in the early morning. What happened? I guess I will need to buy a rain sensor.
Did some research on your account. Things look to be working correctly. Your station is http://w1.weather.gov/data/obhistory/KPWA.html which has not reported any precipitation today and the forecast was for .02 inches.
Also, the other reason your zone “partially” filled up the bucket .33 inches is that we determined you would be depleted before your next even watering day since you have those restrictions on the flex schedule. Without those restrictions we would not have watered today.
Thanks for the feedback.