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Snowdonia: forecast weather
Tuesday, 7 February 2012: dawn to dusk
Printable view Forecast issued: 0531 on Tuesday, 7 February 2012
Overview for Tuesday
A foggy start leading into a cold, but bright and sunny day. Feeling increasingly cold as the day progresses.
| Hazards | Risk | Explanation |
|---|---|---|
| Blizzards | No Risk | |
| Heavy snow | No Risk | |
| Storm force winds | No Risk | |
| Gales | No Risk | |
| Severe chill effect | Low | Over summits, despite light winds, it will feel bitterly cold, especially later in the day. |
| Persistent and extensive hill fog | Low | Valley fog should disperse later in the morning, becoming brightest in the northwest. |
| Thunderstorms | No Risk | |
| Heavy persistent rain | No Risk | |
| Strong Sunlight | No Risk |
key to hazards and forecast content
| Dawn to 0900 | 0900 to 1200 | 1200 to 1500 | 1500 to dusk |
 Fog |
 Sunny intervals |
Sunny intervals |
Sunny intervals |
| 0% | 0% | 0% | 0% |
Detailed mountain weather forecast: Snowdonia
Tuesday
Weather
A generally bright and sunny day is expected across Snowdonia, after freezing fog patches clear the valleys. Feeling increasingly cold as the day progresses, despite winds remaining fairly light.
Visibility
Generally good, but very poor in freezing fog/hill fog.
Hill fog
Early valley fog below 300m will lift and clear during the morning. Becoming largely cloud-free towards the northwest.
Maximum winds above 500m
Easterly 15-20 mph.
Temperature
| Valleys | Minus 1 Celsius, becoming plus 4 Celsius, but feeling increasingly cold towards the end of the day. |
| 900 m | Minus 3 Celsius. |
| Freezing level | 700 becoming 450 metres. |
Wednesday
Weather
A severe frost at first on Wednesday morning, with temperatures unlikely to recover above freezing at any height all day. Barring the odd patch of freezing fog, most of the day should be bright or sunny, with the best of the sunshine through the morning. Despite light winds at all heights, it will feel bitterly cold in exposure to the southerly breeze.
Visibility
Generally good, but locally very poor in any freezing fog.
Hill fog
None expected.
Maximum winds above 500m
Southerly 20 mph.
Temperature
| Valleys | Minus 8 Celsius becoming Minus 1 Celsius. |
| 900 m | Minus 2 Celsius. |
| Freezing level | Surface, with temperatures remaining below freezing at all levels. |
Outlook
Thursday
Another severe frost is likely into Thursday morning, especially if skies clear at all overnight. Then Thursday is likely to be a largely cloudy day, with an increasing chance of seeing some light sleet and snow through the afternoon. Winds remaining light at all levels.
Friday
Perhaps a little less cold on Friday, but there may well be a little more breeze, so the cold feel will still be accentuated. Generally cloudy, with light outbreaks of rain or sleet at low levels, but a risk of some light snow above 300 metres.
Saturday
Cloudy and damp on Saturday, with the chance of sleet and snow, especially given any altitude. Precipitation is not expected to be heavy, but given the cold air in place, it will only add to the cold feel. Hill fog is also likely to quite extensive.
Latest: 04/02/2012 13:41 Despite temperatures rising, winter conditions prevail, Ice Axe and Crampons recommended.
Observations
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The Enhanced Mountain forecast for Snowdonia has been discontinued. All forecast information for these locations can be found in the standard Mountain forecast above.
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