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yellow Warnings have been issued for the United Kingdom

Lake District

Weather hazards over 300m on Thu 18 Dec 2014

High risk

Gales
Means are expected to reach 50mph during the late morning, and gusts will be above 50mph all day.
Severe chill effect
A combination of heavy rain and strong winds give a risk of severe chill effect.
Persistent extensive hill fog
Hill fog will persist at around 400m during the morning and some patches could be as low as 200m.

Medium risk

Storm force winds
During the late morning and early afternoon, there is a risk of gusts reaching 70mph.
Heavy persistent rain
Persistent heavy rain is expected to affect the park during the morning.

Low risk

No low risks
none

No risk

Blizzards
none
Heavy snow
none
Thunderstorms
none
Strong sunlight
none

Thu 18 Dec 2014

Rain will affect the park during the morning, heavy at times, but easing off through the afternoon. After this, there is a risk of showers, which will fall as rain at lower levels but could fall as sleet on the fell tops. The cloud will linger throughout the afternoon and after dusk, before breaking in the evening.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Heavy rain Heavy rain Light rain Light shower night Light shower night Sleet shower night
Precipitation probability
80% 70% 60% 60% 40% 40%

Visibility

Moderate in rain or showers, poor in heavier rain, but good once the rain clears later.

Hill Fog

During the morning, hill fog is expected on fells above 400m throughout the park, but with occasional patches as low as 200m on fells exposed to the west. This lifting above the summits during the early evening with occasional patches around 500m in any showers.

Max wind above 500m

Southwesterly 45mph increasing 50-55mph with gusts of 65-70mph. During the afternoon, veering to westerly 40mph with gusts of 50mph, increasing slightly toward the end of the day

Temperature

Valleys:
Plus 10 Celsius, decreasing to plus 6 Celsius in the evening.
800m:
Plus 6 Celsius, decreasing to Minus 2 by the end of the day.
Freezing level:
Above peaks during the day, but after dusk decreasing to around 800m by midnight.

Ground conditions

Latest: 17/12/2014 13:59 FELL TOP CONDITIONS REPORT Date: Wednesday 17 December Location: Helvellyn summit at 1150 A wet and windy day on the fells, with a rise in temperature. Visibility on Helvellyn today was reduced to around 20m at times in hill fog, with a cloud base at between 650m and 800m. With winds gusting to nearly 45mph on the summit plateau the combination of weather conditions made for difficult walking on the fell tops. The wind speed data recorded on the summit plateau of Helvellyn today was actually slightly lower than on Swirral Edge were a maximum gust of 59.4mph from the NNW was recorded. Predictably, much of the snow has now either gone, or is reduced to smaller patches of soft, wet snow. There are still some large areas of snow above 850m at the head of the east-facing coves, but below that height there is now only a patchy distribution. The summit plateau is also thawing, with the only sizeable drifts still being on the main path along the summit ridge. The deepest bank of snow recorded today was 80cm in depth, but in many places 15cm is the average. Full winter clothing, footwear and equipment should be carried by everyone venturing onto the fells.Temperature: Plus 5.1 deg C. Maximum wind speed 44.3mph. Wind chill: minus 2.9 deg C. Average wind speed: NW 33.8mph.

Issued at: 0327 on Thu 18 Dec 2014

Fri 19 Dec 2014

Clear spells and scattered cloud prevail, but there is a risk the occasional shower, which could fall as snow on the fells above 600m. Wind speeds remain strong throughout the day.

Visibility

Good but moderate in showers of rain or sleet.

Hill Fog

Cloud bases generally above the fells, but occasional patches down to 500m in showers.

Max wind above 500m

Southwesterly 40mph, increasing during the day with consistent gusts of 50-60mph. Some gusts reaching 70mph in the evening.

Temperature

Valleys:
Plus 6 Celsius
800m:
Minus 2 Celsius
Freezing level:
Around 800m.

Issued at: 0327 on Thu 18 Dec 2014

Sat 20 Dec 2014

Showery conditions to start, again wintry on the fells above 600m, but sunny spells and scattered cloud for most. Winds easing during the morning and becoming less gusty. Freezing level remains around 800m.

Issued at: 0327 on Thu 18 Dec 2014

Sun 21 Dec 2014

A band of rain moves across the area during the morning, and another during the early evening, associated with some stronger winds. This will give persistent hill fog above 500m. Freezing level rising above the fells before dawn.

Issued at: 0327 on Thu 18 Dec 2014

Mon 22 Dec 2014

Persistent cloud and intermittent rain is expected. Hill fog persists above 500m, but lower in rain. Wind speeds increase further.

Issued at: 0327 on Thu 18 Dec 2014