A windward Oahu elementary school is closed because strong winds blew off a portion of the cafeteria's roof.

The state Department of Education says about 50 first- and second-graders at Keolu Elementary were eating in the cafeteria Monday when it happened. No one was injured and the rest of the students ate lunch inside their classrooms.

Kailua-Kalaheo Complex Area Superintendent Suzanne Mulcahy says the school will be closed until officials can ensure it is safe for its 145 students to return.

Crews were to clean up debris and assess the damage Tuesday.

The gusty winds also disrupted other area schools. Mulcahy says after-school activities were cancelled Monday at Pope Elementary and Waimanalo Elementary and Intermediate. Both schools are in session Tuesday.