AS part of Emergency Preparedness Week, an emergency alert test will be issued to cellphones, television and radio at 10:55 a.m. (Pacific time) on Wednesday, May 8.

The test alert will go to all compatible cellphones, and will interrupt radio and television broadcasts. This test will assess the system’s readiness for an actual emergency and identify any required adjustments.

To receive alerts, cellphones must be connected to an LTE cellular network. The device must be turned on and cannot be set to do not disturb or airplane mode, be alert-compatible, be within the alert area and have up-to-date cellular software.

Alerts will be broadcast automatically at no cost to the user.