Snow – Rain – Snow

23rd February 2008

Very changeable weather at present. It has been a very windy 48 hours here with some heavy snow showers blowing through yesterday afternoon and early evening. Today it is mild with plus 5 degrees centigrade recorded at 900 metres and plus 3 at 1200 metres.
It is going to turn wet with high amounts of rain (greater than 4mm) forecast for this evening. After midnight the freezing level should start to lower to about 600 metres and the rain ease to give snow showers. At present these are supposed to be mainly in the West but the South Cairngorms are forecast to get some, hence the Category 3 hazard outlook. The winds are going to be 45 mph from the West which will certainly drift any new snow that does fall. As ever the evening weather forecasts are the best source of up to date information on which areas are going to get snow.
As the freezing level lowers the older snow will start to refreeze but this process will take some time to complete. Summit temperature at 1000 metres will be around -3 at midday, but it will feel much colder in the strong wind.
The snow cover is very patchy now. Largest areas are to be found in the high North and E facing corries and also on the bigger hills of over 1000 metres.
Sam

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