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West Highlands

Weather hazards over 300m on Mon 24 Nov 2014

High risk

No high risks
none

Medium risk

Gales
Westerly or southwesterly winds gusting to around 55mph over ridges and summits.

Low risk

Severe chill effect
Near zero temperatures and strong to gale force winds produce a significant wind-chill.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Persistent extensive hill fog
none
Thunderstorms
none
Heavy persistent rain
none
Strong sunlight
none

Mon 24 Nov 2014

Occasional showers over Sutherland and Caithness through the early hours, falling as increasingly as snow above about 750m, otherwise a dry night with clear spells. Then a mainly dry morning with some good spells of sunshine around, however cloud above the summit increases from the west through the afternoon with outbreaks of rain reaching Lochaber, Skye and western Argyll towards mid-afternoon. The rain may become heavy for a time over western ranges before turning lighter and patchier as it spreads east through the evening with drier conditions following from the west

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
Heavy shower day Partly cloudy night Sunny intervals Sunny intervals Cloudy Light rain Light rain Partly cloudy night
Precipitation probability
40% 20% 10% 0% 10% 50% 60% 30%

Visibility

Very good with some good panoramic views of surrounding hills and mountains but falling moderate or good in overnight showers and rain, perhaps poor in summit snow at first and any heavier rain later.

Hill Fog

Periods above 600m in or near showers, otherwise only small amounts through daylight hours, becoming periods above 750m in rain, with patches above 450m in any heavier rain.

Max wind above 600m

Westerly or southwesterly 25-35mph, with gusts around 55mph over ridges and summits, especially in the north, giving a significant wind-chill.

Temperature

Valleys:
Around zero Celsius rising to plus 9 Celsius, falling to plus 3 Celsius in the west later
800m:
Around zero Celsius, rising to plus 4 Celsius for a time
Freezing level:
Around 900m, rising above the summits for a time, with frozen surfaces at lower levels possible after overnight frost.

Issued at: 1629 on Sun 23 Nov 2014

Tue 25 Nov 2014

Patchy rain towards the Great Glen, eastern Argyll and the Trossachs soon clearing eastwards. Otherwise it will be a dry night with clear spells allowing patchy fog and frost to develop. Then a mainly dry day with sunny spells, although the fog may linger well into the day in places, and just a few mainly light showers, snow on Munro's, across the north. Frost and patchy fog likely to develop during the evening.

Visibility

Mainly very good with some decent panoramic views of surrounding hills and mountains, but moderate in showers and locally very poor in low level fog patches.

Hill Fog

Periods above 750m in rain or showers, otherwise only small amounts below summits level although thin layers possible as any fog lifts from the Straths and Glens.

Max wind above 600m

Westerly or southwesterly 20-25mph soon becoming southerly 10-15mph.

Temperature

Valleys:
Falling to minus 1 Celsius then rising to plus 8 Celsius, falling towards zero again later
800m:
Around zero Celsius.
Freezing level:
Around 900m.

Issued at: 1629 on Sun 23 Nov 2014

Wed 26 Nov 2014

Dry with clear spells overnight with a largely bright day following, although thicker cloud and perhaps a few spots of rain, summit snow, are possible across more eastern ranges during the afternoon. Occasionally strong southerly winds. Freezing level around 900m rising to 1200m in the east for a time, but frozen surfaces to low levels possible at first.

Issued at: 1629 on Sun 23 Nov 2014

Thu 27 Nov 2014

Mainly dry with clear spells overnight but after a bright start to the day cloud increasing from the west bringing outbreaks of rain to western ranges for the afternoon. Severe southerly gales developing. Freezing level 900m but rising above the summits through the day, but frozen surfaces to low levels possible at first.

Issued at: 1629 on Sun 23 Nov 2014

Fri 28 Nov 2014

A rather cloudy day with outbreaks of rain, best chance of brighter, drier conditions across the northern Northwest Highlands. Very windy with severe southerly gales expected. Freezing level above the summits.

Issued at: 1629 on Sun 23 Nov 2014