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Thursday, 5 December 2013: dawn to dusk
Printable view Forecast issued: 0239 on Thursday, 5 December 2013
Bright with sunny intervals and wintry showers, heaviest and most frequent in the north and west. Storm force northwesterly winds slowly moderating.
|Blizzards||Medium||Mainly over the higher slopes and summits in the north and west.|
|Heavy snow||Medium||Frequent snow showers will affect the northern and western ranges.|
|Storm force winds||High||Gusts of over 100 mph at first, slowly decreasing 70 mph.|
|Gales||High||Gales at all levels.|
|Severe chill effect||High||Sub zero temperatures and gales will give a severe wind chill over the higher slopes and summits.|
|Persistent and extensive hill fog||Low||Over western summits during the early hours.|
|Thunderstorms||Low||Associated with heavy showers in the north and west.|
|Heavy persistent rain||Low||Over western summits during the early hours.|
|Strong Sunlight||No Risk|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
Heavy snow showers
Heavy snow showers
Outbreaks of rain, with snow over the highest summits, will clear away south later in the night, followed by showers, which will turn wintry at all levels. A bright day will follow with a mixture of sunny spells and showers, these heaviest and most frequent over the Monadhliaths and Cairngorms, with blizzard conditions at times. The showers will continue in the north during the evening, but largely die out over the southern ranges.
Moderate or poor overnight in the rain, then becoming good or very good by daybreak, but reducing poor or very poor in the wintry showers.
Occasional or persistent around 600 metres overnight, breaking to small amount by daybreak, but occasional patches forming around 600 metres in the wintry showers.
Westerly veering northwesterly later in the night, 70 mph with gusts 100 mph over exposed summits and ridges, slowly decreasing 50 mph gusts 70 mph, locally 35 mph gusts 50 mph over the southwest later.
|Glens||Plus 6 Celsius falling to plus 2 Celsius by daybreak, then falling to minus 3 Celsius during the evening.|
|900 m||Plus 1 Celsius falling to minus 8 Celsius|
|Freezing level||1100 metres falling to 300 metres.|
Wintry showers will continue overnight, mainly in the north. A bright day with sunny spells and scattered wintry showers, becoming largely confined to the Cairngorms by the afternoon, with some lengthy sunny spells in the south. Any wintry showers will die out over the Cairngorms during the evening, with clouds thickening to give some light snow over southern and western ranges towards midnight.
Very good or excellent, with distant summits clearly visible, becoming poor or very poor in the wintry showers, and moderate or poor in the light snow later over the south and west.
Occasional patches forming around 450 metres in the showers, becoming occasional or persistent at 500 metres in the more persistent snow over the south and west later
Northwest 50 mph gusts 70 mph slowly decreasing 10-15 mph, backing westerly later.
|Glens||Minus 5 Celsius rising to Plus 1 Celsius then falling to minus 3 Celsius during the evening.|
|900 m||Minus 8 Celsius|
|Freezing level||300 metres|
Patchy light snow spreading northeast across all ranges, turning to rain over all but the highest summits, as the freezing level rises. Westerly winds strengthening over the summits with gales later.
Mild and mainly cloudy with some rain at times, mainly in the west, perhaps some brighter spells in the east. Strong to gale force westerly winds over the summits.
Mainly dry and bright with some sunshine at times in the north and east. Gale or severe ale force west to southwesterly winds over the summits.
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