WR is quite a useful system for you guys but I am surprised technology hasn't moved on (maybe it has).

I would have thought that the main organisations that issue the alerts don't have a subscription sms service that text messages to subscribers phones. Alerts could be sent to the phone mast within the alert area only.

It could be set up to the cost of a normal text plus a small annual fee to subscribers. Most people have mobile phones and have them with them most of the time.

I suppose the only drawback is network coverage.