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Lake District

Weather hazards over 300m on Wed 01 Apr 2015

High risk

Blizzards
Blizzards over higher summits at first. Winds gradually decreasing during the afternoon.
Gales
Frequent gusts of 50-60mph in the morning. Dying down in the afternoon.
Severe chill effect
Strong winds and low temperatures will give severe wind chill.

Medium risk

Storm force winds
Showers may bring isolated storm force gusts over higher summits at first.
Persistent extensive hill fog
Hill fog becoming persistent down to 500m for a time during the evening.

Low risk

Heavy snow
Snow showers expected during the day, but further accumulations will be low.
Thunderstorms
Low risk of thunder associated with showers.

No risk

Heavy persistent rain
none
Strong sunlight
none

Wed 01 Apr 2015

Occasional showers, falling as snow above around 400m giving temporary blizzard conditions at times at first. Rain moving in during the afternoon, but falling as snow over the highest summits. This will clear by the end of the period.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Light snow shower day Heavy snow shower day Heavy snow shower day Light snow shower day Light snow shower day Partly cloudy night
Precipitation probability
40% 60% 60% 50% 30% 10%

Visibility

Very good but falling to moderate in rain and very poor in snow.

Hill Fog

Cloud generally above hill tops, but occasional patches down to 500m in showers. Becoming persistent down to 500m in the rain during the evening.

Max wind above 500m

Northwesterly 40-45mph with gusts of 65mph becoming westerly 25-30mph with gusts of 45mph.

Temperature

Valleys:
Plus 1 rising to Plus 7 Celsius during the day. Falling to Zero again in the evening.
800m:
Minus 2 Celsius.
Freezing level:
400m rising to 800m.

Ground conditions

Latest: 31/03/2015 14:16 FELL TOP CONDITIONS REPORT Date: Tuesday 31 March 2015 Helvellyn summit at 1245 A light dusting of snow and hail was setting above 400m blown in on storm force W - NW winds. Apart from this and isolated snow patches that lie in sheltered hollows the fells below 750m are free from snow. Above 750m, the frequency, size and depth of such snow patches increases with height. Although even at this altitude windswept areas - such as parts of the summit plateau - are free from snow; however the snow that was present was hard and frozen and this combined with the storm force and gusty wind made conditions extremely demanding. The greatest accumulations of snow are generally found on east and north facing aspects with drifts that are still deep enough in places to swallow the shaft of an ice axe. The snowpack on such slopes, especially above 900m, consists of old, hard snow - sometimes with a light covering of soft snow and hail. Crampons and ice axe are required for anyone attempting, or traversing, such slopes. Exposed routes above 750m, such as Striding and Swirral Edges, require extreme care owing to the amount of ice. Swirral Edge in particular still holds a large amount of old snow, especially above 900m, that has hardened with the colder temperatures. The exits to both edges, however, are guarded by banks of steep, deep, unavoidable, old snow and some ice. Although only short sections, they are not places to slip so crampons and ice axe are essential to safely negotiate these areas especially in descent and when, as today, there is a frost at altitude. Cracks have appeared in the cornices that still exist above east and north facing slopes. Although the cornices are quite small, the drops from them are not so please keep well back from such edges. Despite spring flowers everywhere in the valleys, winter conditions still exist above 750m that walkers visiting the higher peaks must both expect and also be prepared for especially when there is a frost at altitude. The summit windchill was minus 16 degrees today, so full winter clothing and footwear remain essential for anyone venturing out onto the high fells. For those interested in the weather stats, the summit wind was certainly gusting stronger than recorded. Owing to its strength I was not standing up straight when measuring it and did not hang around the summit for very long !! Temperature: minus 2.5 deg C. Maximum wind speed 70.5 mph. Wind chill: minus 16.2 deg C. Average wind speed: 48.6 mph.

Issued at: 0416 on Wed 01 Apr 2015

Thu 02 Apr 2015

Dry and cold at first with valley frost. Gradually clouding over during the afternoon, but staying dry. Rain spreading in from the west during the evening, starting as snow over ground above around 400m.

Visibility

Very good for most of the day, but falling poor at times in rain during the evening and very poor in snow.

Hill Fog

Cloud above the summits for most of the day. Periods of hill fog down to 400m in the evening rain, with patches down to 200m on west facing slopes.

Max wind above 500m

Northwesterly 15-25mph with gusts of 35mph becoming light and variable for a time during the day.

Temperature

Valleys:
Minus 2 Celsius rising to Plus 8 Celsius.
800m:
Minus 2 Celsius becoming Plus 1 Celsius.
Freezing level:
Around 400m at first, but rising above the summits during the evening.

Issued at: 0416 on Wed 01 Apr 2015

Fri 03 Apr 2015

Overnight rain will clear leaving dry conditions with broken cloud for the rest of the day. Northwesterly winds, strong at times over higher summits. Freezing level 800m.

Issued at: 0416 on Wed 01 Apr 2015

Sat 04 Apr 2015

Fairly settled conditions, but quite a lot of cloud about, giving some hill fog and drizzle patches over the highest peaks. Freezing level rising above the summits during the day. Fresh northwesterly winds becoming light.

Issued at: 0416 on Wed 01 Apr 2015

Sun 05 Apr 2015

Mainly dry with broken cloud. Still a small risk of some drizzle patches and hill fog over higher summits. Light winds. Freezing level above summits.

Issued at: 0416 on Wed 01 Apr 2015