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Snowdonia National Park
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Viewing forecast for Saturday, 8th December, 2012
Forecast last reviewed on Saturday, 18/05/13 at 16:12
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 Monday, 20th May, 2013
Warm with continued rapid melting of remaining snow at higher levels on Monday and for most of Tuesday with a good deal of sunshine and very little precipitation. Gradually turning cooler and cloudier from the northwest from late Tuesday. Probably only small amounts of rain and winds generally remaining fairly light. A divergence of views towards next weekend with some models pointing to high pressure persisting just to the west of Ireland bringing mainly dry weather and others pointing to more unsettled weather slowly extending southwards at least across northern ranges.