It was too warm to close the pool without risk of turning it to pea soup. Well we went from almost a month of 80 something degree days and upper 50s-lower 60s nights to 52 degree days and frost at night - in one day. The front rolled in overnight and we dropped 30 degrees with 30 mile per hour NW winds gusting to 40 mph and icy rain. Wow! We had to rush and dip out leaves, brush the floor, drain below the skimmer, super shock with gallons of bleach, mix in the polyquat, get those stairs out, the winter cover on with a leaf net over it before those gale force winds knocked all the leaves off the trees and into our pool. Yikes - the rain was sideways, the wind was icy and it was a challenge but, with my trusty 16 year old Mom's helper shoulder to shoulder with me, we got it done. Draining hoses and solar panels came after we safely and securely got those covers on. Whew!!! Goodnight sweet pool - see you in the spring.