I was kinda surprised that none of my NOAA weather radios went off. I sorta assumed they'd be tied into the whole "national" alert setup.
Why interrupt cell phones, AM/FM radio stations, and TV stations, but exclude NOAA weather radios? -A On Sun Oct 1, 2023, 10:24 PM GMT, Sean Donelan <mailto:s...@donelan.com> wrote: > > This year's test of the U.S. national emergency alert includes something > for ISPs and network operators. > > The wireless portion of the national test is scheduled 2 minutes (2:18pm > EDT or 1818 UTC) before the main broadcast test at 2:20. Mobile phones > usually receive the alert about a minute later. Radio and TV will receive > the national alert a few minutes after 2:20pm. > > iPhone iOS 17 added a new feature for Wireless Emergency Alerts. When iOS > 17 iPhones get a wireless emergency alert (WEA), it will trigger a data > network query for additional information. Its a small query and > response, but there are a lot of iPhones making the query at the same > time (I'm assuming Apple engineer's have built in some time skew). > > Apple has assured FEMA that Apple's CDN and servers will be able to handle > the triggered load. > > The iOS 17 triggered query will either be a tiny blip in the network > graphs around 2:18pm to 2:22pm which no one will notice, or some CDNs and > ISP operators will be wondering what that heck that spike was. > > If your phone is configured with Spanish, it will display the alert in > both English and Spanish. > > “THIS IS A TEST of the National Wireless Emergency Alert System. No action is > needed.” > > “ESTA ES UNA PRUEBA del Sistema Nacional de Alerta de Emergencia. No se > necesita acción.” > > You'll know your iOS17 device did an extra data query, if it displays a > longer message (extra sentences) in addition to the messages above. > > "This is only a test. No action is required by the public." > > > https://www.fema.gov/press-release/20230803/fema-and-fcc-plan-nationwide-emergency-alert-test-oct-4-2023
