MOUNTAIN WEATHER INFORMATION SERVICE www.mwis.org.uk Dales and North

The entire National Park and North Pennines AONB, including the Three Peaks and Cross , also south to Forest of Bowland and .

Graham Uney Mountaineering - Mountain Leader, Lowland Leader, Hill & Mountain Skills, Navigation www.grahamuneymountaineering.co.uk

General Summary for Tuesday, 28 January, 2020

British Mountain Summary: Based on forecast chart for noon 28 January, 2020 Extensively windy with frequent snow and hail (and locally thunder) and most mountain terrain frozen. However, a lull in the wind until into the afternoon N & E Highlands, where few showers. Most, particularly western summits, will be cloud covered.

Headline for Yorkshire Dales and North Pennines Windy; snow and hail showers; cloud extensive higher .

Detailed Forecast for Tuesday, 28 January, 2020

How windy? (On the Westerly, 35mph. summits)

Effect of wind on Arduous walking conditions and significant wind chill; particularly gusty near you? precipitation.

How wet? Snow or hail, sometimes frequent; risk lightning (Precipitation and its Snow or hail showers throughout the day. impact) Small risk lightning. There may be a period of an hour or two when the precipitation rarely ceases. Risk temporary whiteout. Cloud on the hills? Extensive across higher fells Cloud often covering higher slopes around Ingleborough and , lowering abruptly below 450m during snow. Elsewhere, patches on higher tops, but tops intermittently clearing.

Chance of cloud 30% rising to 70% free summits?

Sunshine? Bursts of sunshine, often sunny eastern Pennines. Air clarity (below Visibility often excellent, but suddenly appalling where in snow and cloud. cloud)

How Cold? (at 700m) -2C. Will rise marginally through the day. Will feel as cold as minus 14C directly in the wind.

And in the valleys Most terrain frozen or partly frozen from valleys up in morning. Highest temperature 4 or 5C, but dropping abruptly to around 2C in precipitation.

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Yorkshire Dales and North Pennines - Looking Ahead

Wednesday 29 January Thursday 30 January

How windy? (On the Westerly, 35mph. Southwest or westerly in the range 30 to summits) Very likely abruptly strengthening to 50mph on highest tops. around 50mph afternoon. Effect of wind on Walking arduous where exposed on Walking may well be difficult, and wind you? higher areas. Before dusk, walking chill significant where exposed on may become difficult and wind chill higher areas. significant. How wet? Risk persistent snow then rain Often raining (Precipitation and its Areas of snow coming in from west, will Rain frequently, perhaps heavy. impact) set in for periods, giving whiteout on hills. Above eastern dales, the rain only Possibly little precipitation post dawn occasional, and may amount to very little. before deteriorating. Turning to sleet or rain to progressively higher level

Cloud on the hills? Blanket of fog developing Summits extensively cloud covered

Patches across the higher Pennines Fog across the summits most or much of day, but for periods in morning, throughout daylight. Cloud base sometimes higher areas intermittently cloud free. below 350m (widely much lower western Will deteriorate as fog envelops the hills dales), and hills rarely clearing above above 300m western dales, and 450m 550m. east.

Chance of cloud 20% 10% free summits? Sunshine? Glimpses of sun at first when visibility Rare glimpses of sun, mainly lower slopes Air clarity (below often excellent. and valleys eastern dales. cloud) Becoming dull with visibility poor or in Visibility often poor due to rain. snow appalling.

How Cold? (at -2C, rising later to 0 to 2C from west. Varying between 3 and possibly 6C for a 700m) few hours.

And in the valleys 1 to 3C, rising slowly, perhaps higher after Varying between 5 and occasionally 8C. dark.

Planning Outlook All mountain areas of Britain from Wednesday, 29 January, 2020 A rise in temperature mid week, bringing a thaw to most slopes from S Scotland southwards (only brief periods of freeze returning), whilst on the Scottish Highlands, the Munros still frequently below freezing point, although some periods of melt. Precipitation, concentrated on western mountains, will continue to come in off the Atlantic almost daily, bringing significant falls (highest W & NW Highlands). Frequently windy.

Forecast issued at 12:57 on Monday, 27 January, 2020 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 Geoff Monk & Associates, 2020.

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