For tank, the loss of power will be, assuming the house withstands the wind and any blowing debris, your biggest issue. From a personal standpoint, look to past hurricanes for information on local damage from flooding and to power and water infrastructures which will affect you ability stay/live in house. Remember everything can be replaced except you and your family, make decisions to stay or leave based on your safety a #1 priority!
We had Hurricane Matthew come thru SE Georgia last year, and we made out OK at house (though there was severe wind/tree damage and line poles down). We lost power from Friday evening thru Tuesday night. I did have a portable 4500 watt generator (previous Xmas present from Wife) and was glad we had it. Was able to keep both tanks pumping, limited lighting, and basic household appliances including refrigerator running) Bonus was we had gas, so we could cook and tank-less water heater allowed for hot water and showers.
With loss of power you will need to find a solution for keeping the water moving in the tank. I use Ecotech MP40s and Battery backup, but you can find some battery backups for PCs (although somewhat expensive to give you any decent run times).
A cheaper solution would be one or more of these, depending on tank size from Amazon (along with a contingent of D cell batteries):
https://www.amazon.com/dp/B000AP2XS...qmt=e&hvbmt=be&hvdev=c&ref=pd_sl_188zhr2qu7_e
I believe you may also find this in some Home Depots.
Another issue will be temp, and of course lighting. Assuming the temp doesn't get over 83 degrees you should be fine, and unless your heavy in SPS you should be OK for a few days without light. Stop dosing during this period. Reduce feedings as well assuming any mechanical filtration offline.
Prayers go out to those in Houston and surrounding areas with Hurricane Harvey, and to any reefers who were affected.
I hope you fare well and the bad weather passes you by.
Sincerely,
David
