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Snowdonia: latest infra-red satellite
Wednesday, 19 June 2013: dawn to dusk
Printable view Forecast issued: 0521 on Wednesday, 19 June 2013
Overview for Wednesday
Fine and dry once any early mist and cloud clears. Some good sunny spells should then develop, leading to it feeling rather warm.
| 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 | No Risk | |
| Thunderstorms | No Risk | |
| Heavy persistent rain | No Risk | |
| Strong Sunlight | Medium | A risk of sunburn and dehydration during any sunny spells throughout the day. |
key to hazards and forecast content
| Dawn to 0900 | 0900 to 1200 | 1200 to 1500 | 1500 to dusk |
 Sunny intervals |
Sunny intervals |
Sunny intervals |
Sunny intervals |
| 0% | 10% | 10% | 10% |
Detailed mountain weather forecast: Snowdonia
Wednesday
Weather
Fine and dry once any early mist and cloud clears. Some good sunny spells should then develop, leading to it feeling rather warm.
Visibility
Generally good giving some great views across the park, but occasionally moderate or poor in any mist or low cloud during the first part of the morning.
Hill fog
Well broken amounts of cloud around 300m at first but quickly clearing during the morning. No hill fog is expected throughout the afternoon.
Maximum winds above 500m
Northeasterly 10-15mph.
Temperature
| Valleys | Plus 10 Celsius becoming Plus 20 Celsius |
| 900 m | Plus 12 Celsius |
| Freezing level | Well above the summits. |
Thursday
Weather
Rather cloudy with outbreaks of rain spreading north. These gradually turning heavy and more widespread, with a low risk of thunder.
Visibility
Generally moderate to good but occasionally poor in any heavy rain and very poor in hill fog.
Hill fog
Broken occasionally overcast layers of cloud around 300-400m throughout the day. Cloud perhaps staying well broken at times in the west.
Maximum winds above 500m
Easterly 10-15mph.
Temperature
| Valleys | Plus 11 Celsius becoming Plus 18 Celsius. |
| 900 m | Plus 10 Celsius |
| Freezing level | Well above the summits. |
Outlook
Friday
Further outbreaks of rain or showers are likely to move across the park, perhaps turning heavy and persistent in places. Visibilities tending to be poor in the rain with areas of low cloud also expected. Feeling cool.
Saturday
Remaining unsettled across the park with showers or longer spells of rain. The rain may turn heavy and possibly thundery at times, whilst the northwesterly winds will also strengthen through the day.
Sunday
Staying changeable with further rain at first, although perhaps some brighter and showery weather later. Winds remaining fresh.
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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