SEATTLE (AP) — NOAA officials have declared a La Nina advisory that could mean an even rainier winter than usual here in western Washington.

The agency said Thursday that water temperatures in the central Pacific Ocean have been at least a half-degree celsius cooler than normal for three months. That meets their criteria for when a La Nina event has started.

They’re predicting a 75% chance that La Nina conditions will persist through the winter, which will likely mean more rain in the lowlands and more snow in mountainous regions.