It's not that they wouldn't be blown inland, it's just that tomorrow night there won't be enough power in the showers to move inland (maybe they wont even make it to the coast).. the Irish Sea as far as can see, won't be producing them at that point in a streamer. I believe firmly it will take until Thursday morning to see those showers properly developing in the Irish sea, as the cold airmass digs in properly over warm water, to start an efficient production of shower cells.
Edit: apologies, yes Cumbria could well get some decent showers tomorrow night.
I meant further south. A little IMBY apologies.