MOUNTAIN WEATHER INFORMATION SERVICE www.mwis.org.uk The Northwest Highlands
Areas north from Knoydart in the west, and the Great Glen towards the east (NB. Does not include Mull and areas west of Loch Linnhe, these are found in the West Highlands forecast.)
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General Summary for Friday, 5 June, 2020
British Mountain Summary: Based on forecast chart for noon 5 June, 2020 An unseasonably deep low will bring severe conditions increasingly through the day across the Scottish Highlands with severe gales, heavy rain and above 750-1000m snow; whiteout tops. Increasingly windy across England and Wales with occasional showers with highest tops intermittently clearing.
Headline for The Northwest Highlands Severe conditions for June. Gales, heavy rain/snow developing by afternoon. Detailed Forecast for Friday, 5 June, 2020
How windy? (On the Northwest or northerly 25 to 35mph in the morning, marked deterioration during Munros) afternoon as winds increase to 45 to 60mph.
Effect of wind on Walking arduous in morning. Then significant deterioration in the afternoon as you? conditions become widely difficult with significant wind chill.
How wet? Frequent snow (rain lower slopes) (Precipitation and its Precipitation on and off at first, although will become heavy and persistent from midday impact) resulting in near whiteout across higher tops. Snow above about 750m, although will turn to rain up to 1150m late in day.
Cloud on the hills? Extensive, at least higher slopes. Fog will envelop the Munros most or all day, particularly near the coast, the cloud base dropping to 400 to 600m in rain.
Chance of cloud 20% free Munros?
Sunshine? Rare glimpses of sun, if any. Air clarity (below Visibility varying from very good to very poor indeed in snow. cloud)
How Cold? (at 900m) 0C, will rise to 2C late in day.
Freezing Level 850m, rising a little through day, and perhaps to 1300m evening.
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The Northwest Highlands - Looking Ahead
Saturday 6 June Sunday 7 June
How windy? (On the Northerly 35 to 45mph, 50mph tops at Northerly 25 to 35mph in morning, risk Munros) times, will ease later in the day. 40mph in the east, will ease to 15 to 20mph in the afternoon. Effect of wind on Arduous conditions, locally difficult, for Walking arduous in the morning with you? much of the day with significant wind significant wind chill. Conditions easing chill. into the afternoon.
How wet? Showery rain, persistent near west coast. Showers fizzling out. (Precipitation and its Showery bursts of rain on and off, snow Showery bursts for a few hours after dawn, impact) tops at first. The rain will likely be persistent snow across tops, but these tending to fizzle across western coastal hills for much of out to leave a largely dry afternoon. the day.
Cloud on the hills? Extensive, bases lifting afternoon. Extensive, to lower slopes in morning.
Extensive low cloud shrouding the hills for Extensive cloud shrouding the hills through much of the day. However, bases will lift, the day, down to lower slopes in the away from western coastal hills, in the morning, before bases rise to 800-1000m in afternoon with some breaks to higher tops the afternoon. Local breaks. possible in the south away from showers.
Chance of cloud 30% 30% free Munros? Sunshine? Mostly cloudy, rare patches of sun in Little or no sun. Air clarity (below afternoon. cloud) Visibility good or very good, but poor in early Visibility often poor, but improving in showers. afternoon. How Cold? (at 2 to 4C, lowest early morning. Lowering to around 1 or 2C. 900m)
Freezing Level Around 1200m at first, but lifting above the Lowering to 1000-1100m. summits.
Planning Outlook All mountain areas of Britain from Saturday, 6 June, 2020 Strong to gale force force north/northwest winds on Saturday as a deep low continues to drift south along the east coast. Showery bursts, merging in some areas to give prolonged rain. Further showers on Sunday, but winds gradually easing. Uncertain evolution next week, but most likely dry start, then turning more unsettled. Please be aware of currently different restrictions regarding Covid-19 across Scotland, England & Wales. Refer to local guidance or instructions from the National Parks and outdoor bodies, and please respect local communities in areas which are gradually reopening. See mwis.org.uk/blog for latest information and links.
Forecast issued at 15:25 on Thursday, 4 June, 2020 The production of the Scottish forecasts is fully funded by the Scottish Government through Mountaineering Scotland with the support of sportscotland. Forecasts are issued daily by 16:30 and are kept under review and amended as necessary. However, expected conditions can still change after issue. © Copyright Mountain Weather Information Service, 2020.
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