I know, but going on their matrix warning thing, the impact is already set to the maximum and the only thing that is stopping it from being a red warning is the likelihood of it happening which obviously increases as it gets closer.
I expect more orange warnings soon. The weather forecasts showed the majority of the heavy rain in the SW which already has an orange warning moving over the Midlands, so I expect they are waiting for it to be in a closer time frame. Maybe a red warning for the SW? The only thing that stops it from being a red warning is the likelihood which as it gets closer obviously increases. The impact is already there.