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East Highland: forecast uv

Thursday, 23 May 2013: dawn to dusk

Printable view Forecast issued: 0332 on Thursday, 23 May 2013

Overview for Thursday

Very cold air and very strong winds will mean difficult walking conditions across higher ridges and summits. Also sleet and snow showers, mostly over northern climbing areas.

Hazards	Risk	Explanation
Blizzards	Low	Snow showers over highest tops in north will result in very temporary blizzard conditions.
Heavy snow	No Risk
Storm force winds	High	Gusts to storm force possible on highest peaks such as Cairngorm Plateau.
Gales	High	Gale force northerly winds over all higher ridges and summits.
Severe chill effect	High	Due to combination of sub-zero temperatures over tops and very strong winds.
Persistent and extensive hill fog	No Risk
Thunderstorms	No Risk
Heavy persistent rain	No Risk
Strong Sunlight	No Risk

key to hazards and forecast content

Weather summary and probability of precipitation for Thursday
Dawn to 0900	0900 to 1200	1200 to 1500	1500 to dusk
Sleet showers	Sleet showers	Sleet showers	Sleet showers
30-50%	30-50%	50-70%	50-70%

Detailed mountain weather forecast: East Highlands

Thursday
Friday
Outlook
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Thursday

Weather

It will be a very cold and very windy day across the East Highland area. Also rather cloudy with passing showers. The showers will be most frequent over the northern Cairngorms and the Angus hills and falling as snow above about 400M. A few heavier showers are possible with temporary blizzard conditions across northern aspects of the Cairngorms. Climbing areas to the south of Drumochter will have a more in the way of dry weather but still a few passing wintry showers and there will be more in the way of sunshine.

Visibility

The northerly airstream will have great clarity. This will result in excellent visibility, especially towards the south of the area with even more distant hills clearly visible. There will continue to be temporary reductions to very poor visibility as wintry showers pass by.

Hill fog

Occasional fog above 700 to 800M, especially over northern Cairngorms and Angus hills, becoming more extensive near to showers. Hills south of Drumochter will be fog-free for much of the day.

Maximum winds above 600m

Severe gale force northern winds with average speeds of 50mph gusts 70mph but gusts 80 mph possible on highest peaks, especially over Cairngorm Plateau.

Temperature

Glens	Plus 2 Celsius at dawn, rising to 10 Celsius by early afternoon.
900 m	Minus 2 Celsius.
Freezing level	700M.

Friday

Weather

A big improvement in the weather across the East Highland area with much lighter winds. There will still be some showers but they will be light and mostly dying out during the day. Also the air becoming warmer so any snow becoming confined to the highest peaks.

Visibility

Excellent visibility with most hills in sight clearly visible.

Hill fog

Many hills fog-free but occasional fog above 700M for a time over parts of the Cairngorms and Angus hills.

Maximum winds above 600m

Northerly winds will still be quite strong at dawn, average speeds of 30mph but decreasing 15mph by the afternoon.

Temperature

Glens	Plus 3 Celsius rising to 14 Celsius in the afternoon.
900 m	Plus 2 Celsius rising to plus 5 Celsius
Freezing level	1000M rising to 1400M during the day.

Outlook

Saturday

A ridge of high pressure will keep dry, settled conditions across the East Highland area. There will be sunny spells and winds staying light at all levels.