Here's a map I put together of the Weatheradio (one "r"!) service coverage in Canada, assuming each station has a range of 60 km: https://www.keacher.com/files/dir12/weatheradio_map2.png Perhaps unsurprisingly, the coverage is most dense where the population density is also highest, with some exceptions.

And if anybody is curious, here's the coverage for the equivalent Weather Radio service in the United States: https://www.weather.gov/nwr/maps

I'd actually assume closer to 100km of coverage, 60 miles or so is a conservative estimate of coverage, in the prairies I would expect it to go much further - 500w of output on high band VHF goes quite quite far - I know how far the US NWS stations cover, and its much closer to 60+ miles.