Digital Map Data:
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Wednesday, 11 December 2013: dawn to dusk
Printable view Forecast issued: 0440 on Wednesday, 11 December 2013
Mostly cloudy across the Perthshire and Angus Hills, with the odd patch of drizzle. Cloud breaking more in the north with clear or sunny intervals. Freezing levels above the summits though gales will be severe.
|Heavy snow||No Risk|
|Storm force winds||Medium||Gusts to 70mph likely over the Cairngorm Plateau.|
|Gales||High||Gusts over 50mph expected on many exposed ridges slopes and summits.|
|Severe chill effect||Medium||Severe summit gales and temperatures not far above freezing.|
|Persistent and extensive hill fog||Low||Mainly overnight and in the morning in the south and west.|
|Heavy persistent rain||No Risk|
|Strong Sunlight||No Risk|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
Mostly cloudy across the Perthshire and Angus Hills, with the odd patch of drizzle. Cloud breaking more in the north with clear or sunny intervals especially over the Ladder and Cromdale Hills.
Mainly good in the north, moderate at times in the south and west in any patches of drizzle, with hill fog above.
Widespread above 600-750m in the south and west with few lower patches towards Breadalbane and the far south especially in the overnight into mid morning period. In sheltered north and northeast some patches at 900m or above though most hills there in the clear.
South to southwesterly at 45 gusts 70mph.
|Glens||Very mild at Plus 9 to Plus 12 Celsius, though falling to plus 7 in the clearer areas in the evening.|
|900 m||Plus 6 Celsius gradually falling to Plus 4 Celsius.|
|Freezing level||Above the summits, though falling near highest tops during the evening.|
A mainly dry start to the early hours then outbreaks of rain will spread from the west. These will become persistent and quite heavy towards Creag Meagaidh, Ben Alder and Ben Dorain but will be light patchy and intermittent over much of the East Highlands.
Moderate or good, occasionally poor in the heavier rain in the far west.
Remaining persistent above 600m in the south and west, patchy 750-900m elsewhere though perhaps lowering in the evening.
South to southwesterly at 50 gusts 75mph decreasing 30 gusts 45mph during the afternoon.
|Glens||Plus 7 to Plus 10 Celsius|
|900 m||Plus 4 Celsius rising to Plus 6 Celsius.|
|Freezing level||Just above summits at midnight then rising well above again by daybreak.|
Another mainly cloudy day with some rain at times, a few heavier bursts developing. Extensive hill fog though patchy to the north of the Cairngorms. Gale force southelry winds and freezing levels above the summits. Turning clearer and drier later in the evening.
Clear or sunny spells and isolated showers these turning to snow above 800m. Strong southwesterly winds. Cloud increasing in the evening with more persistent rain and summit snow with winds increasing to severe gale. Timing of this rain and snow band is open to doubt and may arrive in the afternoon instead.
Any more persistent rain and summit snow clearing in the early hours then a mixture of clear or sunny intervals and occasional showers these falling as snow above 800m. Southwesterly gales, severe at times on the higher hills and mountains.
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