Is anyone using this?
http://www.ebay.com/itm/290611425838?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649http://www.webbikeworld.com/motorcycle-radio/jensen-jhd910-radio/The weather alert system on it seems pretty nice.
"The JHD910's weather bands were also a pleasant surprise. Weather bands are intended to be local, so they are broadcast at very low power. The radio can also be set to provide weather alerts, a useful feature that can provide advance notice of pop-up summer thunderstorms." If there's a weather alert in the area your riding in, it will interrupt your AM/FM/Aux selection and broadcast the alert.
$160.00 shipped. Click on the eBay link