By Richard Bammer

If you are anywhere near or within earshot of a cellphone, a radio or TV on Wednesday morning, you will hear the jarring sound of an emergency alert.

The nationwide emergency alert test is expected to come at 11:20 a.m. in California, Vacaville Fire Department officials said in a social media post.

If your mobile phone is on and within range of an active cell tower from a participating wireless provider, you should receive the national test.

Source: Nationwide emergency alert test set for Wednesday morning – The Vacaville Reporter