With this service, alert messages are sent via SMS direct to your mobile device, as well as your preferred email address. You also receive a weekly audio Homeland Security Update and newsletter (sent to both email and your mobile device) providing expanded details and expert analysis on alerts sent during the preceding six days. In short, SMS alerts for immediate notification and a weekly roundup and analysis in audio and newsletter form every weekend to fill out the details.
Service is available on literally any mobile device, on any wireless network, anywhere in N. America. As alerts are also sent to your email, it is easy to stay informed if you are traveling abroad.