Digital Map Data:
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Thursday, 12 December 2013: dawn to dusk
Printable view Forecast issued: 1735 on Thursday, 12 December 2013
Rather cloudy start with showery outbreaks of rain, then brightening up in the afternoon with some sunshine and just a few showers. Severe southwesterly gales over the summits.
|Heavy snow||No Risk|
|Storm force winds||Low||Isolated gusts to 70 mph possible over the Northwest highlands later.|
|Gales||High||Southwesterly gales over the upper slopes and summits.|
|Severe chill effect||Low||Sub zero temperatures combining with gales over the summits later.|
|Persistent and extensive hill fog||Medium||Over southern and western ranges until midday.|
|Heavy persistent rain||No Risk|
|Strong Sunlight||No Risk|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
Light rain showers
Heavy rain showers
Light rain showers
Mainly cloudy overnight with showery outbreaks of rain, although drier with some clear spells over the hills of Caithness. Bright with some sunshine over Caithness at first, otherwise mainly cloudy with showery outbreaks of rain, which will clear away east during the morning, then brightening up across all ranges with sunny spells in the afternoon. Showers will feed into western ranges around dusk, and these will continue into the evening, with snow above around 400 metres.
Moderate or good, becoming very good during the afternoon, with distant summits visible, if a little hazy, but reducing poor or very poor in snow showers.
Occasional or persistent around 600 metres, lowering to 300 metres over the mountains of Argyll and Lochaber, but mainly small amounts over Ben Wyvis and the hills of Caithness, and lifting and breaking to small amounts across all ranges during the afternoon. Occasional patches forming around 600 metres in the showers during the evening.
South or southwesterly 35 gusts 50 mph, increasing 40 gusts 60 mph with isolated gusts 70 mph over the Northwest Highlands later.
|Glens||Plus 8 Celsius rising to plus 12 Celsius, then falling to 3 Celsius this evening.|
|900 m||Plus 6 Celsius falling to minus 1 Celsius|
|Freezing level||Above all summits lowering to 500 metres during the afternoon and evening.|
Clear spells with scattered showers overnight, with snow above 400 metres. A mainly dry and bright start, then clouds thickening with outbreaks of rain spreading from the west to reach all ranges by midday, becoming heavy at times during the afternoon, with still some snow over the very highest summits. The rain will clear later in the afternoon, then clear spells with a few showers during the evening, with snow above around 600 metres.
Good or very good, but poor or very poor in snow showers, and becoming moderate or poor in the rain during the afternoon.
Occasional patches around 600 metres in the overnight showers, then becoming occasional or persistent around 600 metres in the afternoon rain, locally down to 400 metres over southern ranges, breaking to small amounts during the evening, although with some patches around 700 metres in the showers.
Southwest 40 gusts 60 mph, increasing 70 mph gusts 100 mph over exposed summits and ridges for a time during the afternoon, with severe buffeting and danger of being blown over
|Glens||Plus 3 Celsius rising to plus 9 Celsius then failing to plus 3 Celsius during the evening.|
|900 m||Minus 1 Celsius rising to plus 3 Celsius for a time in the rain.|
|Freezing level||600 metres rising to 1200 metres in the afternoon, then lowering to 700 metres during the evening.|
Mainly dry and bright during the morning, then clouds increasing with rain spreading from the west during the afternoon, with snow over the summits. Severe southwesterly gales over the summits, backing southerly and increasing storm force during the afternoon.
Bright with sunny spells and scattered wintry showers. Severe west or southwesterly gales over the summits slowly decreasing. Freezing level around 500 metres.
Perhaps the odd wintry shower, otherwise mainly dry and bright with some sunshine. Southwesterly summit gales, becoming severe later. Freezing level around 500 metres.
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