I think by late tonight the forward speed will be down to 10-12 mph, pressure around 960-965, making it a weak cat 3 with 111-115 mph winds.
She's not going to slow down too much. They usually slow when they are rounding the ridge... she is at the base of the ridge, and the ridge will slowly shift east. I think it will be cat 3 by 8 or 11pm tonight. Cat 4 by tomorrow night.