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West Highlands

Weather hazards over 300m on Thu 30 Jul 2015

High risk

Strong sunlight
Sunburn risk

Medium risk

No medium risks
none

Low risk

No low risks
none

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Gales
none
Severe chill effect
none
Persistent extensive hill fog
none
Thunderstorms
none
Heavy persistent rain
none

Thu 30 Jul 2015

There will be a few isolated light showers on Thursday, mainly over the Northwest Highlands and it will become cold enough for some snow on the Munro tops. However most ranges will be dry by day with cloud breaking allowing some bright or sunny spells, the best of these likely over Argyll. Later in the day cloud will increase across Skye with some patchy showery rain developing and a few patches will spread to the mainland later in the evening, though many places will stay dry.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Light rain
Precipitation probability
10% 10% 0% 10% 20% 30%

Visibility

Generally very good, though some patches of moderate visibility in showers especially at higher levels.

Hill Fog

Some patches above 900m in showers. In the evening some areas to 900m and patches to 750m forming especially over Skye.

Max wind above 600m

Northwest 15-20 gusts 25-30mph becoming southwesterly in evening, and increasing 25 gusts 35mph in the Northwest.

Temperature

Valleys:
Plus 7 Celsius in the east and 4 Celsius around Arrochar and Glen Nevis, then picking to up 16 celsius during the day. Down to 11 Celsius by midnight.
800m:
Plus 2 Celsius at dawn rising to Plus 6 Celsius by afternoon.
Freezing level:
1100m rising above summits by mid morning.

Fri 31 Jul 2015

Occasional rain becoming heavier by morning and continuing on and off through the day, more persistent over Skye Mull Lochaber and Argyll. A final burst of heavy rain in the evening will be followed by clearing skies and only isolated showers.

Visibility

Moderate to good, occasionally poor in heavier bursts of rain.

Hill Fog

Occasional, becoming widespread above 750-900m with areas to 500m and patches to 300m near west coast, becoming mroe patchy during the evening.

Max wind above 600m

South to southwesterly 15-25 increasing 30 gusts 45mph during the day, veering westerly in the evening.

Temperature

Valleys:
9Celsius for a time overnight rising to 15 Celsius during the afternoon.
800m:
Plus 4 Celsius rising Plus 7 Celsius.
Freezing level:
Above the summits.

Sat 01 Aug 2015

Mainly dry overnight. Occasional heavy showers developing by morning, some with hail and thunder during the day. Showers easing during the evening. Freezing level above summits. Strong southwest winds, gales possible in the south.

Sun 02 Aug 2015

It should be a dry day with some bright or sunny intervals, and strong west to southwesterlies on the tops will soon ease. Rain arriving from the southwest later in the day but a good deal of uncertainty in the timing of this, so the forecast should be checked in the lead up to the weekend.

Mon 03 Aug 2015

Unsettled and windy with rain or showers, but low confidence on detail at this stage.

Issued at: 0401 on Thu 30 Jul 2015