Flood premiums changing
It was due to happen. Over the next few years flood insurance premiums will begin reflecting the actual risk to that property instead of the current calculation based on flood zone and property value. These premiums will be phased in, but will reflect climate change as well as home elevation and location.
This article has a zip code calculator which shows whether that zip code's average premium will rise, but your premium will be based on your property, not your zip code.