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yellow Warnings have been issued for the United Kingdom

Snowdonia

Weather hazards over 300m on Wed 01 Jun 2016

High risk

No high risks
none

Medium risk

No medium risks
none

Low risk

No low risks
none

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Gales
none
Severe chill effect
none
Persistent extensive hill fog
none
Thunderstorms
none
Heavy persistent rain
none
Strong sunlight
none

Wed 01 Jun 2016

Largely dry for many, but also cloudy. Some patchy outbreaks of light rain or drizzle across north east facing upslopes at times, mainly through the morning. The odd cloud break across the south and west in the afternoon. Breezy, but not as strong as Tuesday.

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
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy
Precipitation probability
10% 10% 20% 10% 10% 20% 20% 20%

Visibility

Generally good or very good moderate in any patchy rain or drizzle and very poor in hill fog.

Hill Fog

Some well broken hill fog above 700m at first, this will lift through Wednesday morning. before redeveloping overnight and lowering to blanket cover above 500m.

Max wind above 500m

North easterly 25mph

Temperature

Valleys:
Plus 9 Celsius becoming Plus 14 Celsius.
800m:
Plus 7 Celsius.
Freezing level:
Above the summits.

Thu 02 Jun 2016

Another cloudy start, with the odd spot of drizzle. Sunny spells are expected to develop through the day, bringing some warm sunshine, although the fresh northeasterly breeze will persist. Hill fog will continue to shroud the higher eastern summits, though looks to lift and break by midday.

Visibility

Moderate at first, becoming good or very good by the afternoon. Very poor in hill fog during the early morning

Hill Fog

Broken to blanket cover above 500m, though soon lifting and clearing by late morning

Max wind above 500m

North easterly 25mph

Temperature

Valleys:
Plus 8 becoming 14 Celsius.
800m:
Plus 9 Celsius.
Freezing level:
Above the summits.

Fri 03 Jun 2016

A generally dry day, with any early cloud and hill fog lifting and breaking, with winds also easing further. Whilst the odd patch of hill fog could persist, and the occasional spot of rain cannot be ruled out, there will be some fine conditions to be found. The best of these remaining in the south and west.

Sat 04 Jun 2016

Starting largely again with hill fog lifting and breaking through the morning. Some good sunny spells through the afternoon however, though this may trigger some showers for the late afternoon and evening. Lighter winds.

Sun 05 Jun 2016

Sunday currently looks to be a fine day once any early cloud and hill fog has cleared. Plenty of sunny spells are expected through the afternoon with light winds also. There is an outside chance of a shower, however these are currently expected to form to the west of Snowdonia.

Issued at: 1726 on Tue 31 May 2016