With gusts like that it is all down to runway orientation at the respective airports as to whether a landing can be completed.
AT KOI the runway is 27 (270 degrees or so) so a wind from 230 degrees gives a 40 degree crosswind. Up to 60 degrees the component is calculated, beyond 60 the whole windspeed is considered.
So for the worst of the forecasts where the wind is gusting 230 at 45kts the calculation would be 40/60 x 45 kts = 30kts. This would be close to limits for most airlines.
At Aberdeen the runway is 340 degrees so a wind from 250 degrees would be a direct 90 degree crosswind. The forecast below shows a steady wind of 15kts with gust to 27kts so both probably within limits.