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yellow Warnings have been issued for the United Kingdom

West Highlands

Weather hazards over 300m on Tue 03 Mar 2015

High risk

Gales
Widespread gales developing across all upland areas by late morning
Severe chill effect
Snow showers, gales and sub zero temperatures will give a severe wind chill.

Medium risk

Blizzards
Across most ranges, especially across Lochaber and Trossachs in the morning
Heavy snow
Mainly across Lochaber and the Trossachs
Storm force winds
Gusts developing to 70 mph or more on higher summits across the south by the end of the morning

Low risk

Strong sunlight
Risk of sunglare in any lengthy sunny spells

No risk

Persistent extensive hill fog
none
Thunderstorms
none
Heavy persistent rain
none

Tue 03 Mar 2015

Scattered snow showers continuing through the day across West Highland ranges, some of these heavy with some hail and isolated thunderstorms along the west coast. A spell of heavy and prolonged snow will cross the Trossachs and Lochaber in the morning, leading to quite widespread blizzard conditions for a time. The best of the drier and brighter conditions are likely to be found across the far North Highlands, chiefly across Caithness. Little change in the evening.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Heavy snow shower day Heavy snow shower day Heavy snow shower day Heavy snow shower day Light snow shower night Light snow shower night
Precipitation probability
30-50% 70-90% 50-70% 30-50% 30-50% 30-50%

Visibility

Mostly very good with very good air clarity Becoming poor in any snow showers with blizzard conditions developing for a time in the south. Blowing snow will also reduce visibility.

Hill Fog

Patches down to 500 metres in snow showers, and widely down to 350 metres for a time late morning in any persistent snow in the south.

Max wind above 600m

Southwesterly 30 mph increasing severe gale or storm force 50 mph gust 70 mph by the end of the morning, with gusts to 80 mph over the tops of the Nevis ranges. However winds will become light and variable acorss the north for a time in the afternoon before strengthening again after dark. Winds veering northwesterly in the evening and remaining very strong with a risk of being blown over, especially across the south.

Temperature

Valleys:
Minus 2 Celsius rising to plus 4 Celsius
800m:
Minus 4 Celsius with severe wind chill in exposure.
Freezing level:
200 rising to 400 metres by afternoon.

Issued at: 0241 on Tue 03 Mar 2015

Wed 04 Mar 2015

Some snow showers in the early hours and first thing in the morning across northern and eastern ranges, but these should steadily fade through the morning. The afternoon will be dry although high cloud will spill over from the west making any sunshine rather hazy in nature. Some patchy summit snow possible in the evening, this mostly across western coastal ranges.

Visibility

Mostly excellent with very good air clarity. Blowing snow will markedly reduce visibilility in places. Becoming occasionally moderate in any evening snow.

Hill Fog

Occasional patches forming around 500 metres snow showers, otherwise mainly small amounts. Cloud thickening and lowering to 500 metres in the evening across the south and west.

Max wind above 600m

Northwesterly 40 mph gust 70 mph easing through late morning to 25 mph and veering westerly by afternoon. Strengthening southwesterly 50 gust 70 mph again in the evening.

Temperature

Valleys:
Minus 2 Celsius rising to 5 Celsius.
800m:
Minus 3 Celsius rising to plus 1 Celsius in the evening.
Freezing level:
400 metres rising to 1000 metres late evening.

Issued at: 0241 on Tue 03 Mar 2015

Thu 05 Mar 2015

A cloudy day with some patchy rain or summit snow, this mostly across western ranges. Drier and clearer weather extending from the northwest towards dusk. Southwesterly gales easing later. Freezing levels rising well above summit level leading to some thaw of lying snow, although lowering to 700 metres later.

Issued at: 0241 on Tue 03 Mar 2015

Fri 06 Mar 2015

Dry for most of the day although patchy rain developing across southwestern ranges later in the day. Very windy with severe southwesterly summit gales. Freezing levels rising well above the summits with some thaw of lying snow.

Issued at: 0241 on Tue 03 Mar 2015

Sat 07 Mar 2015

A much milder and very windy day with severe or storm force southwesterly winds. Rain and hill fog developing across western coastal ranges at times through the day, drier inland. Freezing levels well above summit level with a marked thaw of lying snow.

Issued at: 0241 on Tue 03 Mar 2015