This Wednesday, September 9, you may receive a test emergency alert on your cell phone or landline as Orange County conducts a large-scale emergency exercise.

The county will be simulating a significant flooding event to test how local departments and emergency response partners coordinate during a major emergency.

As part of the exercise, Orange County will test its Countywide Emergency Alert System. All cell phones and landline phones in the Orange County area are expected to receive the test message.

There is no need to sign up to receive the alert. And most importantly, this is only a test. There is no emergency and no action is required when you receive the message.

The exercise is being held during National Emergency Preparedness Month as the county tests its emergency response systems and procedures.