The UKMO got their warning for heavy rain spot on for western Scotland today. Higher ground has seen more than 80 mm in my estimates from weather radar in the last 24 hours. Some of that rain above 3,000 feet will have fallen as snow which they didn’t bother to mention, and I should imagine as the colder air digs in behind the cold front during this evening and tonight the snow level will steadily fall.
Heavy persistent rain across the west of Scotland for much of Boxing day with widely 20-30mm, locally 40mm, and 60-80mm on high ground. This is likely to result in localised flooding of roads and some properties. Rain will be accompanied by strong to gale force winds, resulting in difficult driving conditions and large waves giving a risk of spray along the west coast. Persistent rain clears to showers Saturday night.