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West Highlands

Weather hazards over 300m on Fri 27 May 2016

High risk

Strong sunlight
Especially across Sutherland and Caithness.

Medium risk

No medium risks
none

Low risk

Persistent extensive hill fog
Mainly overnight and later in the evening in exposed areas.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Gales
none
Severe chill effect
none
Thunderstorms
none
Heavy persistent rain
none

Fri 27 May 2016

Cloud will gradually increase across northern ranges through the early hours, with some long clear spells across more western ranges. Elsewhere the day will start cloudy with some light rain mainly across the Trossachs. The cloud will gradually break across the north through the day. Best of the sunshine expected across Sutherland and Caithness. A few sharp showers are possible to develop later in the afternoon. Cloud reforming over northern ranges during the evening.

Time
0000 to 0300 0300 to 0600 0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night
Precipitation probability
0% 10% 10% 10% 10% 30% 0% 0%

Visibility

Very good with some good panoramic views of surrounding summits across western ranges, although across northern ranges cloud is likely to obscure views of surrounding hills.

Hill Fog

Periods or persistent fog developing overnight above 450m across northern ranges, with patches below 300m over hills closest to the eastern coasts, but gradually becoming generally small amounts through the morning. Further periods or persistent hill fog above about 300m re-forming over Caithness hills later.

Max wind above 600m

Easterly 10-15mph, but occasionally 20mph overnight into Monday morning.

Temperature

Valleys:
Plus 5 Celsius by dawn, rising to plus 18 Celsius by day before falling to plus 8 Celsius later.
800m:
Plus 3 Celsius rising to plus 7 Celsius by day.
Freezing level:
Above the summits.

Sat 28 May 2016

Another cloudy start on Saturday, mainly away from the north where sunny spells are expected. Through the morning and the afternoon, it will brighten up everywhere with scattered showers developing mainly across the Northwest Highlands, some of them possibly heavy. Becoming drier later in the evening but with more cloud spreading from the east.

Visibility

Very good with some good panoramic views of surrounding summits.

Hill Fog

Well-broken at around 700m mainly across the eastern ranges. Periods down to 500m affecting the Trossachs and Caithness hills later in the evening.

Max wind above 600m

East wind 10mph gusting 20mph.

Temperature

Valleys:
Plus 4 Celsius by dawn, rising to plus 18 Celsius by day before falling to plus 8 Celsius later.
800m:
Plus 4 Celsius rising to plus 9 Celsius by day.
Freezing level:
Above the summits.

Sun 29 May 2016

Similar to Saturday with some good spells of sunshine developing, after overnight low cloud and mist clear, but also the risk of heavy and slow-moving showers developing in the afternoon. Mainly light winds. Freezing levels above the summits.

Mon 30 May 2016

Northern ranges continue to see rather more cloud than elsewhere but most places should see some decent spells of sunshine. Mainly dry, just the odd shower possible. A moderate northeasterly breeze develops. Freezing levels above the summits.

Tue 31 May 2016

Mostly cloudy across the south with outbreaks of mainly light rain. Across the north much drier conditions with sunny spells developing. Strengthening northeasterly winds, with possible gales across the tops.

Issued at: 1445 on Thu 26 May 2016