It got cold
A weather front moved in and it got a bit cold. Which is fine cause we don't want plants to bloom thinking its spring and then die afterwards when it gets cold. I enjoyed the 70 deg (22 deg c) weather we had this weekend, and the timing could not have been better. But we don't want system wide damage to plants and trees like we had in 2007.
I was grasping at straws looking for a good photo to compliment the blog post but I couldn't find one. Sorry. The above is a screen shot, a resistance table for calibrating a temperature sensor.