East Highlands mountain area forecast
Forecast issued: 0252 on Friday, 6 December 2013
Overview for Friday
A bright and chilly start with sunny spells, bur scattered snow showers will affect the Cairngorms, and clouding over with patchy light snow spreading to southern and western ranges.
High risk of Gales: Over the Cairngorms until around mid-morning.
High risk of Severe chill effect: Over the Cairngorms until around mid-morning.
High risk of Persistent extensive hill fog: Associated with the more persistent light snow spreading from the southwest later.
Medium risk of Blizzards: During the morning in snow showers over the Cairngorms.
Medium risk of Heavy snow: During the morning in snow showers over the Cairngorms.
Medium risk of Storm force winds: At first over the Cairngorm Plateau
Low risk of Strong sunlight: Sun glare off the snow cover, mainly over the higher slopes and summits.
No risk of Thunderstorms; Heavy persistent rain;
Weather summary and probability of precipitation for Friday
|Dawn to 0900||snow||30% chance of precipitation|
|0900 to 1200||Heavy snow showers||30% chance of precipitation|
|1200 to 1500||Light snow showers||40% chance of precipitation|
|1500 to dusk||Light snow||60% chance of precipitation|
Detailed mountain weather forecast
A sunny start across most ranges, but snow showers will continue over the Cairngorms, and clouds will increase to give some light snow over Creag Meagaidh, Breadalbane and Ben Chonzie during the afternoon. Patchy light snow will spread north and east to the rest of the area during the late afternoon and evening, turning to rain al lower levels in the west later.
Very good or excellent, with distant summits clearly visible, but locally very poor in and snow showers, and becoming moderate occasionally poor in the more persistent light snow.
Mainly small amounts, but occasional patches around 450 metres forming in the snow showers, and becoming occasional or persistent at 400 metres in the more persistent light snow.
Maximum winds above 600m
Northwest 50 mph gusts 80 mph over the Cairngorms during the early hours, decreasing 30 mph gusts 50 mph by daybreaks, then easing variable 10-15 mph by the end of the afternoon. Increasing Westerly 25 mph gusts 40 mph later.
Glens: Minus 7 Celsius rising to plus 1 Celsius.
900 m: Minus 8 Celsius rising to Minus 2 Celsius later.
Freezing level: All levels, rising to 500 metres in the south and west later.
Cloudy overnight with occasion snow turning to rain at all levels before largely dying out, then most ranges dry but rather cloudy through the day, although the will be some rain at times in the west, with perhaps some bright or sunny intervals over the eastern Cairngorms and Angus hills. Further rain in the west during the evening otherwise dry and mainly cloudy.
Moderate or poor becoming mainly good, but locally moderate at times in rain over western ranges.
Occasional or persistent around 400 metres, breaking to occasional or occasional patches around 600 metres through the day, but still with some patches at 400 metres in the west.
Maximum winds above 600m
West to southwesterly winds increasing 40 mph with gusts 60 mph, locally 80 mph over the Cairngorm plateau
Glens: Minus 1 Celsius rising to plus 7 Celsius
900 m: Minus 2 Celsius rising to plus 2 Celsius
Freezing level: Surface, locally 500 metres in the west, lifting above all summits by the end of the day.
Rather cloudy withy some rain at times, mainly in the west, with perhaps some heavy bursts. mild with westerly gales over the summits.
Perhaps some light rain in the west, otherwise dry with perhaps some brightness in the east. Strong summit winds backing into the southwest.
Another mainly dry day with some sunshine over northern ranges. Strong south or southwesterly winds over the summits.