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Friday, 13 December 2013: dawn to dusk
Printable view Forecast issued: 0306 on Friday, 13 December 2013
Cloudy, mild start with hill fog and outbreaks of rain. The hill fog is set to drop lower late in the morning and the rain is also likely to be heaviest, then it should turn drier clearer and fresher.
|Heavy snow||No Risk|
|Storm force winds||No Risk|
|Severe chill effect||No Risk|
|Persistent and extensive hill fog||Medium||Widespread down to 400 metres developing, dropping to 200 metres then clearing around lunch time.|
|Heavy persistent rain||Low||Outbreaks of rain may turn heavier late morning, then clearing east.|
|Strong Sunlight||No Risk|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
A cloudy but mild start to the day with hill fog and outbreaks of rain. The hill fog is set to drop lower late in the morning when the rain is also likely to be heaviest. Clearer and fresher weather should then spread in from the west around lunchtime to leave a dry end to the day.
Generally poor to moderate at first, but poor in the rain and very poor in the hill fog, becoming very good through the afternoon.
Widespread down to 400 metres developing, dropping to 200 metres then clearing around lunchtime.
Southwesterly 20-25 mph.
|Valleys||Plus 11 Celsius.|
|900 m||Plus 7 Celsius.|
|Freezing level||Well above the summits.|
After a clear and cool start, it should cloud over through the morning ahead of a band of rain which is set to spread in from the west in the afternoon. The rain will be heavy at times and strong winds, perhaps gales, are expected as well.
Generally very good but becoming poor to moderate in the band of rain.
Widespread hill fog down to 600 metres spreading in from the west during the day.
Southwesterly 55-70 mph.
|Valleys||Plus 2 Celsius rising to plus 6 Celsius.|
|900 m||Plus 3 Celsius.|
|Freezing level||Around the summits.|
A windy day. Once the overnight rain and hill fog clears it should turn largely dry for a time with some prolonged brightness. Later in the day there may be the odd scattered shower. Freezing level above the summits.
Some scattered blustery showers at times but also plenty of drier and brighter spells in between. Freezing level around the summits. Another windy day.
Scattered showers overnight but then it should turn dry for much of the day with winds a touch lighter than recent days. Later on it should cloud over as a band of rain with strong winds spread in from the northwest. Freezing level around the summits.
Latest: 11/12/2013 16:39 Yr Wyddfa - Snowdon; No adverse ground conditions.
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