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Snowdonia National Park
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Viewing forecast for Thursday, 6th December, 2012
Forecast last reviewed on Thursday, 12/12/13 at 15:12
Headline, Snowdonia National Park
Severe upland gales. Snow, tending to turn to rain lower areas.
Southwesterly 40 to 55mph, gusts 75mph.
Effect Of Wind?
Upland gales will make for difficult walking conditions across the hills. Severe wind chill.
Heavy rain and snow
Persistent often heavy rain, but snow above about 500 to 900m. Least precipitation eastern mountains, where snow will penetrate to lowest level. Whiteout widespread.
Cloud on the hills?
Hills shrouded in cloud, to a low level across the west, but breaks to 650m eastern areas.
Chance of cloud free Summits?
Less than 10%
Sunshine and air clarity?
No sunshine. Visibility often very poor, and near zero where in snow.
How Cold? (at 900m)
-1C; will feel as cold as minus 17 Celsius directly in the wind.
Rising to 700 to 900m. But terrain widely frozen and icy from valleys upward at first. Gradual thawing during the day, especially western hills.
Planning Outlook for all mountain areas from Saturday, 14th December, 2013
A much wetter and most extensively in Scotland stormy period: Across Highland Scotland, there will be a series of freeze thaw cycles. Total precipitation will be considerable over western Scotland (but one or two bouts of heavy rain on all western mountains). Severe or occasionally storm force winds, will be most frequent across the Scottish Highlands.