Ahead of this weekend's storms, Seattle Mayor Ed Murray recommended residents stay out of all city parks.

There are two reasons why: soggy ground and high winds.

"We're not closing any green spaces. We're advising people to stay away from our parks as the soil becomes saturated, and the winds pick up," said Mayor Murray.

This recommendation takes effect Friday night.

Two storm systems will be sweeping through Western Washington Thursday and Saturday. Heavy rain is expected Saturday with a major wind storm Saturday night. Some urban areas could see gusts that top 50 mph.

Related: Saturday storm on track to be most powerful in over 50 years

While staying out of parks is only a recommendation, staying off Seattle's green fields is a mandate. It's so wet green fields, like the one in West Seattle, aren't damaged.

According to the Mayor's office, there's less than 10 green fields across the city, but starting Friday they'll all be closed.

As of Thursday evening, there was one cancellation related to the closure. The high school football matchup between O'Dea High School and Eastside Catholic High School has been moved to Seattle Memorial Stadium at 5 p.m.