The procedure is that on Wed/Thur an evaluation of the fields will be done by the complex operators, another evaluation will be made on Friday morning (assuming clear skys).
Generally speaking, the complex to "close" first is always Oceanside, due to a construction defect of sorts (built on a silica mine that is settling causing drainage issues), Silverlakes and Galway are generally fairly good at taking on and absorbing reasonable amounts of water, but once waterlogged, they will close too. San Bernardino has a professional field management team, so they will be in much better shape than in years past, but San Bernardino still is going through a multi-year renovation.
The facilities that are built on a USGA sand base are by far in the best shape, but nothing out here, to my knowledge, achieves the ideal 12" sand base, which is capable of absorbing an 1"+ of rain within an hour. So we basically have mostly native soil complexes, with dormant bermuda grass (some are overseeded) that can handle about 1/4 to 1/2 inch of rain 24 hours before play time.
That said, if the forecast is for more than .5 inch on Saturday, expect most facilities to shutdown.
