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Not available 0100 on Wed 23 Apr 2014 1300 on Wed 23 Apr 2014 0100 on Thu 24 Apr 2014 1300 on Thu 24 Apr 2014 1300 on Fri 25 Apr 2014
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Updated: 0811 on Mon 21 Apr 2014
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West Highland: forecast pressure

Monday, 21 April 2014: dawn to dusk

Printable view Forecast issued: 0334 on Monday, 21 April 2014

Overview for Monday

Dry and windy with hill gales. Early hill fog burns off, but this slow to clear from the Trossachs and some ranges across eastern Sutherland. Best of sunshine across Lochaber and neighbouring ranges.

Hazards Risk Explanation
Blizzards No Risk  
Heavy snow No Risk  
Storm force winds No Risk  
Gales High Gusts 50mph many areas, especially above 850metres.
Severe chill effect Low Possible in prolonged exposure on mid and upper slopes and summits at first, mainly in hill fog.
Persistent and extensive hill fog No Risk  
Thunderstorms No Risk  
Heavy persistent rain No Risk  
Strong Sunlight High Especially across the northwest and on higher summits where glare from remaining snow cover.

key to hazards and forecast content

Weather summary and probability of precipitation for Monday
Dawn to 0900 0900 to 1200 1200 to 1500 1500 to dusk
Sunny intervals
Sunny intervals
Sunny intervals
Sunny intervals
Sunny
Sunny
Sunny
Sunny
0% 0% 0% 0%

Detailed mountain weather forecast: West Highlands

Monday

Weather

Fine settled weather holds with another cold night and start to Monday with touch of frost and some fog banks in deeper glens. The northwest will have another fine day with long sunny spells. However some cloud and hill fog will affect the Trossachs, parts of Perthshire and eastern Sutherland at first, this slowly lifting and thinning by mid-afternoon to leave sunny spells later. Best of sun for Lochaber and Skye.

Visibility

Moderate or good generally but poor during the morning in some eastern areas such as the Trossachs and eastern Sutherland. Locally improving very good during the afternoon near the west coast with more distant hills becoming discernible.

Hill fog

Periods 150 to 300 metres during the morning on east facing slopes of both the Trossachs, Perthshire and Sutherland, but just limited patches from North Argyll up into Skye. However the Munros will largely poke out above this hill fog layer. This hill fog slowly thinning and fragmenting during the afternoon though a few patches may persist over east Sutherland.

Maximum winds above 600m

East 30 or 35mph gusts 50mph.

Temperature

Glens Between freezing and plus 3 at sunrise in glens, lifting plus 15 Celsius by mid-afternoon, falling 6 Celsius after dark.
900 m Around plus 6 Celsius locally 9 Celsius later.
Freezing level above summits

Tuesday

Weather

The northwest Highlands and Skye hold onto mostly dry fine weather with some pleasant hazy sunny spells. Ranges further south across Argyll, the Trossachs and into Rannoch Moor, as well as east Sutherland ranges with be cloudier with haze, mist and hill fog, especially during the morning, and a few showers developing.

Visibility

Moderate or good with more distant hills very vague or indiscernible, and poor during the early morning in some eastern areas such as the Trossachs and eastern Sutherland. Locally improving very good during the afternoon, mainly near the west coast.

Hill fog

Periods 250 to 500 metres during the morning, especially on east facing slopes of the Trossachs into Perthshire and also Sutherland, much more limited from North Argyll up into Skye. This hill fog slowly lifting and fragmenting by noon though persisting over east Sutherland and returning to Trossachs later

Maximum winds above 600m

Easterly winds 35mph gusting 45 to 55mph.

Temperature

Glens Plus 4 Celsius rising plus 13 or 14 Celsius.
900 m Plus 6 Celsius.
Freezing level Above summits.

Outlook

Wednesday

Mostly cloudy with periods of rain developing across many ranges, a few heavier bursts for Argyll and the south, whilst the best of the dry periods across the northwest and Skye. Hill fog, especially on southern and eastern ranges, less so across Lochaber, Skye and Torridon. Still rather hazy with a strong to gale force Southeast wind, the wind subsiding notably later.

Thursday

Changeable conditions with a fresh South or Southeast wind bringing some showers but also brighter spells. Patchy hill fog.

Friday

Weather pattern remains unsettled to end the week with a moderate or fresh Southeast wind liable to bring some showers and patchy hill fog to more eastern slopes, best of brighter conditions in western coastal ranges.

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