Nuclear Readout Japan
The Weather warning screen will, after the initial map of
japan has been loaded,look like this:
At the top there is a dropdown control (Choose prefecture...). By hitting this
control you can select a japaneese prefecture to get a more detailed view about
current weather warnings in that area:
By pressing the back softkey on your cellphone or
by touching the symbol for the weather warnings again
you can close the weather warnings view and return to
the main screen.
Further options are explained here when
new versions are released.