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yellow Warnings have been issued for the United Kingdom

West Highlands

Weather hazards over 300m on Fri 24 Feb 2017

High risk

Gales
Becoming widespread during the evening
Persistent extensive hill fog
From late afternoon as cloud, rain, snow and strengthening winds spread from west.

Medium risk

Blizzards
Across highest peaks in the west of Northwest Highlands late afternoon through to mid-evening.
Storm force winds
From late evening
Severe chill effect
From late afternoon as cloud, rain, snow and strengthening winds spread from west.

Low risk

Heavy snow
Across highest peaks in the west of Northwest Highlands late afternoon through to mid-evening

No risk

Thunderstorms
none
Heavy persistent rain
none
Strong sunlight
none

Fri 24 Feb 2017

Isolated snow showers for the first few hours of Friday morning, falling as rain below around 300m, these largely restricted to the northern and western ranges. Mainly dry through the rest of the morning, but cloud building from the west from early-afternoon with a band of rain, initially falling as snow from 400m, spreading to all late-afternoon. Remaining overcast with rain at all levels by midnight.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Sunny intervals Sunny intervals Cloudy Light snow Heavy snow Light rain
Precipitation probability
20% 10% 10% 60% 90% 80%

Visibility

Good falling moderate or poor in early showers and later rain, but very poor in hill fog.

Hill Fog

Well broken from 700m, becoming from mid-afternoon overcast 300-450m with patches lower over western slopes of Highland coastal ranges.

Max wind above 600m

Variable 15mph or less, becoming South or Southwest 40 gusts 55 late afternoon, then 50-55 gusts 75 late evening.

Temperature

Valleys:
Minus 2 Celsius rising to plus 7 Celsius
800m:
Minus 6 Celsius rising to Plus 2 Celsius by midnight
Freezing level:
500m lifting above all summits late evening

Sat 25 Feb 2017

Overcast at first with occasional rain, this heaviest across ranges in Wester Ross and Skye. Clearing to a mix of sunshine and showers late morning with snow level descending to around 700m. Showers tending to die away during the afternoon, largely becoming confined to a few light outbreaks in the west for the evening.

Visibility

Beginning moderate or poor, but very poor in hill fog, becoming mainly good from late morning.

Hill Fog

Overcast 300-450m with patches lower over western slopes of Highland coastal ranges, becoming well broken from 700m from late morning, occasionally lowering 500m in showers

Max wind above 600m

South or Southwest 50-55mph gusts 75 early morning, veering West 35-40 gusts 55 by noon, then backing Southwest 20 gusts 30 later

Temperature

Valleys:
Plus 7 Celsius rising Plus 11 Celsius, then falling Plus 2 Celsius later
800m:
Plus 2 Celsius falling Minus 1 Celsius later
Freezing level:
Above summits lowering 800m later

Sun 26 Feb 2017

Quite unsettled with showers merging to longer periods of rain at times, again western ranges will see the bulk of the outbreaks and hill fog. Snow level 700m lowering 300m later. Summit winds strong occasionally gale force.

Mon 27 Feb 2017

Wintry showers frequent in the west, occasional in the Great Glen and occasionally falling as rain at lowest levels. Fresh to strong summits winds.

Tue 28 Feb 2017

Another day of sunshine and showers, these mostly wintry and across the north and northwestern ranges, but perhaps merging to longer spells of rain and snow for a time. Fresh to strong summits winds.

Issued at: 0239 on Fri 24 Feb 2017