Alerts are awesome - apart from the Rain

[herbacious]

It seems to only be possible to assert that there is a minimum amount of rain

In fact I need to assert that there is a maximum amount of rain. I would probably set this to 0mm - i.e. it must not be forecast to rain at all

This one thing unfortunately makes the alerts a bit pointless for me. I'm based in the UK, we get a lot of rain!