UKMO FAX has #StormEowyn 948 hPa at 18Z tomorrow. That's a drop of 5⃣3⃣  hPa in 24 hours. 😬
At its latitude of around 45 N, rapid cyclogenesis is defined as a drop of around 19-20 hPa in 24 hours. This is >2.5 times that. 
Let's hope it will deepen and occlude further west so that the strongest winds miss #Ireland.
#StormEowyn