An early winter blast

Last Friday it snowed all day, it never snows all day in the willamette valley. It was cold and dry snow that just fell off the bamboo. It hasn't been above freezing in 4 days and it's been as low as the single digits, the snow is still powder. So cold and unusual, tanks that have never had surface ice are 4 inches thick with ice. The greenhouse system has an 800 watt heater which is keeping the system water in the low 40's. The inside of the plastic with snow on it was in the high 30's and only 20 on the outside.