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Updated: 2214 on Mon 15 Mar 2010
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Snowdonia: latest visual satellite

Tuesday, 16 March 2010: dawn to dusk

Forecast issued: 1708 on Monday, 15 March 2010

Printable view

Overview for Tuesday

Mostly dry with early morning valley fog quickly lifting and bright spells developing through the day.

Hazards Risk Explanation
Blizzards No Risk  
Heavy snow No Risk  
Storm force winds No Risk  
Gales No Risk  
Severe chill effect No Risk  
Persistent and extensive hill fog Low Valley fog at first, quickly lifting to occasional patches around the peaks.
Thunderstorms No Risk  
Heavy persistent rain No Risk  

Key to Hazards

Weather summary and probability of precipitation for Tuesday
Dawn to 0900 0900 to 1200 1200 to 1500 1500 to dusk
Fog
Fog 		Sunny intervals
Sunny intervals 		Sunny intervals
Sunny intervals 		Sunny intervals
Sunny intervals
0% 0% 0% 0%

Detailed mountain weather forecast: Snowdonia

Tuesday

Weather

There may be some early morning valley fog, but this should quickly clear to leave a mostly dry and bright day. Occasional patchy cloud may linger around the peaks.

Visibility

Poor or very poor at first, improving to moderate or good.

Hill fog

Early morning valley fog, quickly lifting to occasional patches above around 900 to 1000 metres.

Maximum winds above 500m

South to southwesterly 15-20mph, with gusts reaching 25 - 30mph over peaks and exposed ridges.

Temperature

Valleys Plus 4 Celsius rising to plus 9 Celsius.
900 m Plus Zero Celsius.
Freezing level Above around 900 metres.

Wednesday

Weather

A much cloudier day with occasional light rain or showers, but becoming drier in the afternoon.

Visibility

Moderate or poor, falling below 200 metres in fog.

Hill fog

Fairly widespread above around 400 metres.

Maximum winds above 500m

Southwesterly 22-28mph, with gusts reaching 30 - 40mph.

Temperature

Valleys Plus 9 Celsius.
900 m Plus 2 Celsius.
Freezing level Above the summits.

Outlook

Thursday

Southwesterly winds strengthening with gale force gusts likely. Remaining cloudy with rain, some heavy, spreading east. Hill fog is likely to be widespread to low levels, with generally poor visibility.

Friday

Another wet and windy day with rain spreading from the south. Winds should become more westerly through the day. Hill fog is expected to be quite widespread, with poor visibility.

Saturday

Rain clearing to leave a much brighter day, but staying quite breezy with brisk southwesterly winds. Scattered showers may develop later in the afternoon. Visibility mostly good.

North East England West Midlands Grampian South West England Central, Tayside & Fife Northern Ireland North West England East of England Highlands & Eilean Siar Strathclyde Wales East Midlands SW Scotland, Lothian Borders London & South East England Yorkshire & Humber