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yellow Warnings have been issued for the United Kingdom

West Highlands

Weather hazards over 300m on Sat 04 Jul 2015

High risk

Gales
Severe gales over the higher peaks, mainly in the morning.

Medium risk

Persistent extensive hill fog
Periods of fog at 300m mainly across the eastern ranges.

Low risk

Storm force winds
Gusts may reach 70 mph in association with the heavier burst of rain in the morning.
Thunderstorms
Heavy bursts of rain will bring a risk of lightning, mainly in the morning.
Heavy persistent rain
Outbreaks of rain will be locally heavy, but the heavier bursts are expected to pass quickly.
Strong sunlight
In any sunny spells later in the day.

No risk

Blizzards
none
Heavy snow
none
Severe chill effect
none

Sat 04 Jul 2015

A wet and windy morning with severe gales over the peaks. Rain will be light and patchy at first north of the Great Glen, but with some heavy downpours over Argyll and Lochaber giving a slight risk of thunder. The heaviest rain will move north into the Northwest Highlands in the afternoon. Further south will turn mainly dry but cloudy in the afternoon, but with the chance of the odd shower in the west.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Heavy rain Heavy rain Light shower day Cloudy Sunny intervals Partly cloudy night
Precipitation probability
70-90% 70-90% 40% 20% 10% 10%

Visibility

Visibility will be moderate to poor in the heavy rain, becoming good or very good from mid-afternoon.

Hill Fog

Occasional fog down to 700m mainly associated with the rain, with fog lifting across the Northwest Highlands. Periods down to 300m across the north.

Max wind above 600m

Southeast 40-50 mph gusting 60 mph perhaps 70 mph in association with heavy rain, becoming south or southwesterly 25 mph in the afternoon.

Temperature

Valleys:
Around plus 10 Celsius, rising to plus 18 Celsius in the afternoon, but dropping down to plus 12 Celsius in the evening.
800m:
Around plus 7 Celsius in the morning, rising to plus 12 Celsius in the afternoon.
Freezing level:
Freezing level above the summits.

Sun 05 Jul 2015

It will be a dry night with some mist or fog possibly forming along the glens. This soon burning off in the morning with good sunny spells and mostly dry conditions following. However, cloud will develop in the afternoon with scattered showers, these possibly heavy and thundery, but dying away in the evening. Feeling warm across the low levels.

Visibility

Visibility will be generally good or very good, but temporarily poorer in any heavy shower.

Hill Fog

Periods of fog down to 300m across the eastern foothills of Sutherland and Caithness hills, these burning off in the morning, with most summits cloud-free. Then occasional patches down to 500m associated with the showers.

Max wind above 600m

South-south-easterly 10-15 mph with gusts of 25 mph.

Temperature

Valleys:
Around plus 11 Celsius in the morning, rising to plus 19 Celsius in the afternoon.
800m:
Around plus 5 Celsius in the morning, rising to plus 12 Celsius in the afternoon.
Freezing level:
Freezing level above the summits.

Mon 06 Jul 2015

Monday morning will be generally dry and bright with good sunny spells. Cloud will thicken in the afternoon with some light rain spreading northwards. Strengthening southwesterly wind, with a risk of gales. Freezing level above the summits.

Tue 07 Jul 2015

A band of rain will spread from the south, clearing in the afternoon with a mixture of sunny spells and scattered showers following. Strong southerly winds, becoming moderate southwesterly in the afternoon.

Wed 08 Jul 2015

Wednesday will see generally dry and bright conditions, however few showers will develop in the afternoon and the evening. Moderate to fresh westerly wind. Freezing level above the summits.

Issued at: 0504 on Sat 04 Jul 2015