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Snowdonia National Park
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Viewing forecast for Saturday, 8th December, 2012
Forecast last reviewed on Tuesday, 10/12/13 at 13:33
Headline, Snowdonia National Park
Deteriorating: Becoming windy and low cloud developing.
Northerly turning westerly, 20mph to 25mph, perhaps 30mph by mid-afternoon, particularly Snowdon range.
Effect Of Wind?
There may be an odd brief shower, and of drizzle western hills in the afternoon (most likely only toward dusk).
Cloud on the hills?
Confined to higher summits; before forming widely west
Patchy cloud, mostly coastal hills above 900m. In the afternoon, blanket low cloud will envelop western hills, base 350m or lower. By dusk patchy low cloud will have reached some eastern areas.
Chance of cloud free Summits?
70%, later dropping to less than 10% western mountains
Sunshine and air clarity?
Sun in and out at first, mainly well inland; but high level cloud will gradually thicken Visibility excellent.
How Cold? (at 900m)
-1C at dawn, gradually rising to 2 or 3C.
Lifting above the summits. But much terrain frozen or partly frozen.
Planning Outlook for all mountain areas from Thursday, 12th December, 2013
The present dry conditions will progressively give way from the northwest later this week, as fronts come in off the Atlantic. Remaining windy, particularly Scottish Highlands. Next week, lengthy upland gales, sometimes storm force, particularly across Scotland. Often wet, particularly western mountains. Freeze thaw cycles, mainly Scottish Highlands.