Koi Pond in Path of Irma Koi

I have a 4k gallon Koi pond with 4 18 koi and about a dozen goldfish. We are expecting major impacts from Hurricane Irma just north of Tampa. Any advice for how to prepare my pond and keep my fish alive during and after the storm? We expect the power to be out for days if not weeks. I have a solar powered pond pump but it is only powerful enough to aerate, not power the filter.

https://nextdaykoi.com/koi-fish-facts/koi-ponds-storms-hurricanes/