High for much quieter and brighter conditions on Wednesday. Medium for the detail from later Thursday due to complexity of the lows and fronts pushing east across the UK.
Poor visibility presents challenging route finding conditions. Visibility could be significantly less than 50 metres in all directions with few or no visual references, especially on featureless moors or plateaux. Distances become hard to judge and cliff or cornice edges can be difficult to recognise. These conditions require good navigational skills. There is a risk of white-out conditions when mist or fog is combined with extensive snow cover.
A much more settled day with sunny spells and light winds. Patchy rain and stronger winds in the evening.
|Chance of precipitation|
|900m||SE 9 11||SE 11 14||SE 15 21||SE 19 24||SE 24 30||SE 28 34|
|600m||SE 9 13||SE 9 12||SE 14 19||SE 16 22||SE 23 30||SE 22 30|
|300m||S 6 10||SE 3 7||SE 6 14||SE 7 16||SE 9 21||SE 9 22|
|Valley||E 3 9||E 3 8||SE 6 15||SE 5 16||SE 8 21||SE 7 21|
Dry on Wednesday with sunny spells but high cloud will invade from the south in the afternoon. Thicker cloud and patchy rain will spread north after dark.
Patchy cloud above 800m early in the morning with an 80% chance of clear summits then all summits expected to become clear through the morning. Cloud will lower and become extensive through the evening above 500 or 600m.
Outside any cloud it will be very good through the day with clear views, occasionally poor during the evening.
A chilly feel across the summits, especially towards the end of the day as winds freshen from the east or southeast.
No adverse ground conditions reported on 18 of Oct
Overcast with patchy rain at first then clearing to sunshine and isolated showers in the morning. Mostly dry and bright through the rest of the day although some rain may return in the evening.
Hazy or misty conditions at first but views opening up through the morning
Very little chance of clear summits at first with persistent cloud above 300 or 400m but cloud breaking up and lifting to around 800m during the morning.
Strong southerly winds through most of the day with gusts reaching 40mph over exposed ridges and summits. Increasing severe gale late evening with gusts 60mph.