High for a cool showery day again on Thursday and over the weekend but low on Friday due to uncertainties regarding northward extent of more persistent precipitation associated with a low moving east across the southern UK.
Late sunny or clear spells and showers. Strong westerly winds.
Gale force winds (gusts over 50mph) make walking difficult and strenuous with a potential to be blown over by gusts. There is often a marked increase in winds through cols or on exposed ridges and summits. Distances can take longer to cover and compass bearings become harder to follow accurately.
Wind significantly lowers the ‘feels-like’ temperature relative to the actual temperature, with even moderate winds significantly adding to the chilling effect. Strong winds can result in a severe and debilitating wind chill many degrees below the actual temperature. This effect will be enhanced in rain or wet snow. Without protection, prolonged exposure could result in frost nip or frostbite on exposed parts of the body and/or hypothermia.
Harmful UV levels from sunlight increase with altitude giving a greater risk of sunburn and eye damage, even on some overcast days. On breezy days, the cooling effect of wind on exposed skin may disguise any feeling of sunburn until it is too late. If there is snow cover, glare increases the effect of UV rays especially on the eyes. It is advisable to wear sun block, protective clothing such as a long-sleeved top and hat and have good quality eye protection.
Blizzards and whiteouts present challenging and serious conditions due to a combination of falling or blowing snow, strong winds and cold temperatures. They can be highly disorientating, often resulting in near-zero visibility with limited or no visual references and no distinction between ground and sky. Cliff edges and cornices may not be apparent, even close up. These conditions require very good navigational skills.
Heavy snow can lead to rapid changes in underfoot conditions and paths may become treacherous or hidden. It also brings very poor visibility and often makes navigation much more challenging. When deep snow accumulates progress is often time consuming and strenuous, significantly affecting the distance one can travel on foot. Deep drifts can develop if snow is combined with strong winds. A heightened avalanche risk is possible and avalanche reports should be consulted where available.
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.
Lightning is a significant mountain hazard which can result in serious injury or death. Mountain terrain often leaves one highly exposed to lightning strikes. Hail may give unpleasant conditions with torrential rain and localised flash flooding also possible, mainly in Summer months.
Heavy and persistent rain can lead to drenched clothing and footwear with waterproofs often becoming soaked through, especially if accompanied by strong winds. This can lead to significant loss of body heat and an increased likelihood of hypothermia. Terrain may turn increasingly boggy underfoot while streams can flood and become impassable. There may also be a risk of flooding in valleys or glens. If there is snow cover, a heightened avalanche hazard is possible and avalanche reports should be consulted where available.
Sunny spells and heavy showers. Strong to gale force westerly winds easing later
|Chance of precipitation|
|900m||W 32 41||W 36 45||W 37 47||W 39 50||W 37 49||W 34 45||W 28 36||W 21 25|
|600m||W 26 36||W 29 40||W 30 41||W 32 44||W 31 43||W 28 40||W 21 29||W 15 20|
|300m||W 12 30||W 13 32||W 13 32||W 16 36||W 15 36||W 14 33||W 10 24||W 5 14|
|Valley||W 12 29||W 12 30||W 13 31||W 16 36||W 15 34||W 12 30||W 8 21||W 4 12|
Just a few showers overnight with some clear spells. Then a bright day with sunny spells and showers, the showers becoming heavy at times with a risk of hail and thunder by early afternoon, with snow above about 750m and perhaps temporary blizzard conditions on the higher fell tops. The showers gradually become lighter and less frequent from mid-afternoon with the evening becoming largely dry.
Around 60% with occasional or periods above 750m lowering to 600m at times in or near showers.
Very good or excellent falling to several kilometres in showers and a few hundred metres or less in cloud and snow showers on higher fells.
A significant chill is expected with temperatures around, or below, freezing at height and strong to gale force winds with gusts around 55mph over ridges and summits. Valley temperatures rise to around 11 or 12 Celsius by day.
No recent ground conditions report available.
Mainly dry through the early hours but cloud increasing. Outbreaks of rain and, increasingly above about 750m, snow spread east soon after dawn, the precipitation most persistent and occasionally heavy across southern fells through the middle of the day. Drier conditions spread east through the evening.
Westerly around 20mph decreasing 10mph and gradually backing northerly or northeasterly, increasing 15-20mph, gusts around 30mph later.
Around 80% through the early hours becoming near zero across southern fells through the morning with periods or persistent cloud above 450m developing, although chances nearer 25% across northern fells and later western fells with cloud near 600m at times.
Very good falling to several kilometres in rain and a few hundred metres or less in cloud and snow on higher fells.