The storm is set to hit this area on Friday and Saturday, and follows on from a pre-existing rain warning for today (Wednesday) through into the end of Thursday for western parts of the Highlands. Previously, the rain warning did not include the Outer Hebrides. The areas covered by the rain warning for Wednesday and Thursday. “The strongest winds currently look more likely over parts of northern Scotland. “The very strong winds will also be accompanied by spells of heavy rain, most persistent across parts of western Scotland.