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yellow Warnings have been issued for the United Kingdom

Snowdonia

Weather hazards over 300m on Tue 09 Feb 2016

High risk

Gales
Considerable buffeting on likely higher level routes.
Severe chill effect
Risk of hypothermia unless adequately protected

Medium risk

Blizzards
Medium risk of blizzard conditions on the peaks in the afternoon.

Low risk

Persistent extensive hill fog
Some navigation difficulties possible on high level routes by mid-afternoon.

No risk

Heavy snow
none
Storm force winds
none
Thunderstorms
none
Heavy persistent rain
none
Strong sunlight
none

Tue 09 Feb 2016

Partly cloudy with isolated wintry showers through the early hours, with winds continuing to moderate, giving a cold start to Tuesday with a touch of frost in places. Increasingly cloudy through the morning with showers becoming more frequent by midday, and merging in the afternoon to give some more general sleet or snow on the hills, with blizzard conditions possible across higher peaks. Significant wind chill across the hills.

Time
0000 to 0300 0300 to 0600 0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Sleet shower night Partly cloudy night Sunny intervals Sleet shower day Sleet shower day Heavy snow shower day Sleet shower night Sleet shower night
Precipitation probability
60% 30% 10% 60% 80% 80% 70% 60%

Visibility

Good or very good, becoming moderate to poor at times in showers. Very poor in hill fog.

Hill Fog

Occasionally broken around 600m, becoming broken or blanket near 400m at times in the afternoon.

Max wind above 500m

Westerly 40 gust 50mph becoming northwesterly 45 gust 55 mph

Temperature

Valleys:
Plus 1 becoming Plus 7 Celsius
800m:
Minus 2 Celsius
Freezing level:
600m, lowering to 300-400m at times in showers.

Ground conditions

Latest: Date of observations: 07/02/2016 Observation made on: Yr Wyddfa - Snowdon Time of observation: 1.00 pm Winter conditions above: 900m Ground Conditions: Isolated patches of snow, Light dusting of hail/snow, Thawing snow has refrozen, Heavy frost covers rocks and vegetation, Depth of snow increases with height, Slopes and paths covered in hard snow and ice Observations on: Observation: Went up PYG track. No ground hazards until 10m short of finger stone at Bwlch Glas where old hard snow covers path. Above this path was heavily iced to summit. Descend via Miners track. During afternoon prolonged and heavy showers fell as sleet/snow above 600m. Kit Advice: Ice axe and crampons recommended, Wear crampon compatible boots, Wear sturdy walking boots, Walking poles can provide an aid to balance and security when walking through unconsolidated snow, Ski goggles can aid visibility in strong winds and blowing snow, Take waterproofs, hat, gloves and spare warm layers Further Advice: Continuing very strong and gusty winds encountered.

This report is completed on a regular basis through the winter months by Snowdonia National Park Wardens and gives indicative information on snow/ice conditions underfoot in the Snowdonia area as a whole. Remember mountains can be inhospitable and dangerous places for the ill-prepared so it is important to check the forecast before setting out.

Further information:
Live information on Winter Conditions in Cwm Idwal: https://www.thebmc.co.uk/idwal
Forum discussions on the latest Winter Conditions: http://www.ukhillwalking.com/forums/i.php?f=7
The Met Office is not responsible for the content of external sites.

Wed 10 Feb 2016

Becoming mostly dry through the early hours with winds moderating and some cloud breaks developing. A cold start to Wednesday with a touch of frost in places, then the day should remain mostly dry with some sunny intervals, and just the small risk of an isolated wintry shower. Winds on the hills continuing to moderate.

Visibility

Very good or excellent, isolated moderate in any showers, and very poor in hill fog.

Hill Fog

Occasionally well broken or broken around 600m in the morning.

Max wind above 500m

Northwesterly 40 gust 50 mph early in the day.

Temperature

Valleys:
Zero becoming Plus 8 Celsius
800m:
Minus 3 Celsius
Freezing level:
Near or below freezing at most levels at first, rising to 600m during the day.

Thu 11 Feb 2016

A cloudier day is likely with occasional showers, these wintry on the hills. Winds becoming strong southerly by evening.

Fri 12 Feb 2016

Some uncertainty, but currently expected to be cloudy with outbreaks of rain or sleet, and with snow likely across the peaks. Strong easterly winds are likely at elevation, with extensive hill fog in the east.

Sat 13 Feb 2016

Continuing uncertainty, but likely to remain unsettled with occasional rain and a wintry mix at elevation, and with fresh or strong northeastly winds.

Issued at: 1639 on Mon 08 Feb 2016