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Thursday, 12 December 2013: dawn to dusk
Printable view Forecast issued: 1717 on Thursday, 12 December 2013
Cloud, rain and drizzle persisting until afternoon, when brighter and drier conditions will emerge.
|Heavy snow||No Risk|
|Storm force winds||No Risk|
|Gales||Medium||Isolated gusts over exposed ridges and summits may reach 50mph.|
|Severe chill effect||Low||Although temperatures will be mild, strong winds combined with persistent rain may lead to cooling.|
|Persistent and extensive hill fog||High||Persistent down to 500m at first, but clearing later.|
|Heavy persistent rain||No Risk|
|Strong Sunlight||No Risk|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
A generally dull and wet start to the day, with rain and drizzle in all areas of the park but particularly in the south and mid-western fells, where the rain will be more persistent. Clearer conditions will move in from the west however, with good sunny spells appearing from the early afternoon. Breezy also, with the chance of some light buffeting on the more exposed ridges and summits.
Moderate at first and poor or very poor in rain and drizzle, but becoming good or very good during the late afternoon.
Persistent down to 500m at first, clearing to occasional patches over the southwestern fells, and becoming nil by evening.
Southerly 30-35mph with gusts up to 50mph over high summits. Becoming southwesterly 20-25mph with gusts reaching 40mph in exposure.
|Valleys||Plus 9 Celsius, rising to plus 12 Celsius before falling to plus 6 Celsius later.|
|900 m||Around plus 7 Celsius at first, but falling to zero by midnight.|
|Freezing level||Freezing level well above the summits but falling to 800m by midnight.|
Hazardous windy and wet conditions during daylight hours on Saturday, as a band of heavy rain and strong gusts reaching storm force at times will move in from the west. Severe buffeting, wind chill, and wet conditions could lead to loss of footing or hypothermia in exposure. Rain and winds will begin to ease later in the evening.
Generally good until the rain begins, then moderate or poor in rain.
Nil at first, with persistent areas forming in rain down to 500m. Becoming nil again in the evening.
Southwesterly 20-25mph at first, but increasing 50-55mph with storm force gusts before sunrise. Ease 20-25mph towards midnight.
|Valleys||Plus 5 Celsius rising to 10 Celsius and falling back to plus 5 Celsius.|
|900 m||Zero rising to plus 4 Celsius and falling again to plus 1 Celsius later.|
|Freezing level||Freezing level at 700m at first but soon rising above the summits.|
After the clearance of any remaining rain in the early hours of the morning, there will be a bright period with sunny spells around midday. Rain will then return in the evening, with showers turning wintry over the higher summits for a time. Remaining windy, with gales in exposure. Freezing level about 800m during daylight hours, otherwise above the summits.
After a showery start to the day, a clear period with good sunny spells should emerge during the daytime. However a band of rain will move in from the west in the late afternoon, which may be heavy at times. It will be windy also, with gales over exposed ridges and summits. Freezing level around 800m, falling to around 400m towards midnight.
A mild day, with a mixture of sunny spells and wintry showers at first. The showers will ease towards midday to give some good sunny periods before a band of widespread and persistent rain moves in from the west in the evening. Winds will begin to ease relative to the previous days. Freezing level around 400m, rising above the summits later.
Latest: 12/12/2013 15:43 FELL TOP CONDITIONS REPORT. Thursday 12 December, Location: Helvellyn summit at 13:10. Although there is a lot of water on the fells today, none of it is in the form of snow or ice. Despite the continued mild weather, the summit windchill remains below freezing, so full winter clothing and footware are strongly recommended for anyone venturing onto the high fells. For those who like quiet fells, now is the time to come! I did Helvellyn via the edges today and only saw one other person all day! Temperature: plus 5.3 deg C. Maximum wind speed: 35mph. Wind chill: minus 0.9 deg C. Average wind speed: SW 28mph.
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