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West Highlands

Weather hazards over 300m on Thu 03 Sep 2015

High risk

Gales
Northerly gales across the tops.

Medium risk

Persistent extensive hill fog
Extensive across much of the north and west, giving difficult navigation conditions above 600m.

Low risk

Severe chill effect
Northerly winds will increase the cooling effect, especially during showers.
Strong sunlight
Moderate UV levels will give a slight risk of sunburn despite the cooler temperature in the south.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Thunderstorms
none
Heavy persistent rain
none

Thu 03 Sep 2015

Thursday will be another windy day. It will be generally cloudy with scattered showers mainly across the north. Elsewhere, much drier and brighter conditions expected, but with few well scattered light showers too. The best of the driest and brightest conditions across Argyll hills and the Trossachs where a few sunny spells possible. Feeling noticeably cooler in the wind.

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 Cloudy Sunny intervals Light shower day Sunny intervals Partly cloudy night
Precipitation probability
30-50% 30-50% 30-50% 30-50% 30-50% 30-50% 30-50% 30-50%

Visibility

Visibility will be generally good or very good, but poorer in the rain across the north.

Hill Fog

Periods of fog down to 600m mainly across the north and the west, with occasional patches down to 450m. Southeastern peaks will be mainly cloud-free.

Max wind above 600m

North 30mph with gusts up to 50mph, but possibly gusts of 65mph across the Northwest Highlands.

Temperature

Valleys:
Plus 7 Celsius in the morning, rising to plus 14 Celsius in the afternoon.
800m:
Around plus 4 Celsius.
Freezing level:
Above the summits.

Fri 04 Sep 2015

Mainly cloudy on Friday with outbreaks of rain mainly across the north, this more persistent across the Northwest Highlands. Rain may turn heavy for a time in the morning however this will gradually clear from northern ranges through the rest of the day. Best of the conditions once more across the Trossachs and south Argyll hills with some sunny spells during the morning possibly lasting into the afternoon, but cloudier later with some light rain.

Visibility

Good in the south, but moderate in any rain later. In the north modearte or poor becoming very good in the evening.

Hill Fog

Fog becoming persistent at 500m across the north with patches down to 300m in the afternoon across the exposed ranges. Most fog clearing later in the evening with only a few patches remaining across the north, but some banks developing in the south later in the day around 600m.

Max wind above 600m

Northwest wind 30mph gusting 50mph, easing to 25mph gusting 40mph later in the day.

Temperature

Valleys:
Plus 4 Celsius in the morning, rising to plus 15 Celsius in the afternoon.
800m:
Plus 2 Celsius in the morning, rising to plus 6 Celsius in the afternoon, but dropping down to plus 4 later in the evening.
Freezing level:
Above the summits.

Sat 05 Sep 2015

Saturday will be largely dry, with only few showers arriving from the northwest across the Northwest Highlands, with some wet snow possible across the highest peaks. Best of the conditions across the southern ranges. Fresh to strong northwesterly wind. Freezing level briefly down to 1000m in the morning, gradually rising above the summits through the day.

Sun 06 Sep 2015

Showery rain arriving from the northwest, affecting mainly the north, with drier conditions elsewhere. Best of brightness across the south and east. Easing northwesterly winds. Freezing level above the summits.

Mon 07 Sep 2015

Few showers across the north, otherwise it will be a mainly dry day with bright or sunny spells. Light winds. Freezing level above the summits.

Issued at: 1746 on Wed 02 Sep 2015