Intellicast.com also has a "future" radar that doesn't go as far into the future as the UW site but it did work fine on my iPhone browser.
http://www.intellicast.com/Local/WxM...ation=USOR0275
Agreed on Weather Underground Andy. This is probably my favorite radar map with a loop.
http://www.wunderground.com/wunderma...rtland%2c%20OR
For the iPhone, I find both the wunderground (
https://itunes.apple.com/us/app/weat...486154808?mt=8 ) and weather.com (
https://itunes.apple.com/us/app/the-...295646461?mt=8 ) apps to have good radar loops which have kept me from a surprise soaking on more than one occasion. I'm sure they have Android apps as well.