A reminder, the National Weather Service and Mendocino, Humboldt, and Del Norte counties will test the tsunami warning system between 11 am and noon today. The test will include tsunami sirens, the full Emergency Alert system on TV, radio, and NOAA weather radios. The Mendocino County Office of Emergency Services will test the reverse 911 calling system to make sure all systems are working properly. The Civil Air Patrol will also be conducting a fly-over of the entire coast during the warning period.