Published: Sep 03, 2013 6:40 AM EDT
Updated: Sep 03, 2013 12:52 PM EDT

NAPLES, Fla. - Leaders with the Greater Naples YMCA have made temporary arrangements for members following a devastating fire Monday afternoon.

Lightning has been blamed for this fire.

YMCA President Paul Thein says as of Tuesday morning, fitness members can work out at NCH by presenting their membership ID. Collier County has also opened up its park facilities for fitness members, including the Golden Gate Aquatic Center.

According to Thein, members can also use the Marco Island YMCA.

Since the gymnasium sustained most of the damage, the tennis center and daycare center will remain open. There are still arrangements pending for 62 members in the infant care program (ages 3 and younger), but the Y says it is awaiting portable classrooms for that group.

Afterschool programs will be housed at nearby Osceola Elementary School.

Thein says the preliminary blame for the fire is lightning, but an official cause is yet to be released. Fire officials estimate one-third of the building is damaged, with damages totaling $2 million.

The Y will rely on insurance to help cover the cost of rebuilding but has also set up a disaster fund at First National Bank of the Gulf Coast.