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Wednesday, 18 December 2013: dawn to dusk
Printable view Forecast issued: 0507 on Wednesday, 18 December 2013
Cloudy with outbreaks of rain through the day and very strong winds. Heavy rain is expected during the evening for a few hours with winds strengthening to severe gales. Rain clearing around midnight.
|Heavy snow||No Risk|
|Storm force winds||Low||Low risk or reaching storm force winds over the highest peaks through the evening.|
|Gales||High||Considerable buffeting to be expected in severe gales.|
|Severe chill effect||High||Very strong winds and very heavy rain combine, especially during the evening.|
|Persistent and extensive hill fog||Medium||Broken bases above 400m through the day.|
|Heavy persistent rain||Medium||Persistent and heavy rain likely during the evening.|
|Strong Sunlight||No Risk|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
Light rain showers
Light rain showers
Light rain showers
Cloudy with outbreaks of rain through the day and very strong winds, with gales over the summits. By evening a spell of heavy rain is expected, this lasting for a few hours and leading to some difficult underfoot conditions, perhaps also some surface water flooding. Winds also strengthening through the evening to severe gales, with risk of storm force winds over the peaks. Rain should clear through by midnight, with winds easing from severe gale, through remaining strong.
Generally moderate for much of the day, but becoming poor in the very heavy rain by evening.
Broken bases above 400m through the day.
South-southwesterly 40 to 45 mph through the day then peaking during the evening when gusts 50 to 60 mph are possible before turning more westerly and moderating to around 35 to 40mph.
|Valleys||Plus 2 Celsius, becoming Plus 9 Celsius.|
|700 m||Plus 3 Celsius, increasing to plus 6 Celsius through the day.|
|Freezing level||Well above the summits, lowering to around the highest summits after the rain clears later Wednesday night into the early hours of Thursday morning.|
Drier than Wednesday, but with blustery, wintry showers and bright spells in-between. Showers lasting through the day and into the evening, these a wintry mix of rain, sleet and hail and likely to fall as snow, especially but not exclusively on higher slopes and peaks. Strong winds will lead to a noticeable wind chill and some especially poor conditions in any showers.
Very good outside showers but rapidly becoming poor or very poor in any snow showers.
No significant hill fog is expected.
Southwesterly 35-40mph, with gusts perhaps up to 45-50mph associated with heavier showers.
|Valleys||Plus 4 Celsius, becoming Plus 6 Celsius|
|700 m||Zero Celsius.|
|Freezing level||Around the summits, falling to about 600 to 700 m through the morning and lowering further temporarily in association with snow showers.|
Any wintry showers should die away through the early hours of Friday. Largely dry with clear or sunny spells for the morning and early afternoon. However thickening cloud will bring further rain by evening. Windy throughout and becoming increasingly so into the evening period when gales are likely on exposed peaks. Freezing level around 600-700m for much of the day before lifting towards evening.
Wet and very windy through the early hours of Saturday, the rain lasting until around dawn before clearing. A bright day to follow but with one or two blustery showers likely. Freezing levels will lower later in the day, but should remain just above the summits.
Remaining very windy with a mixture of clear or sunny intervals and blustery showers. Perhaps more persistent rain developing during the evening. Freezing levels should remain just above the summits but throughout the weekend a significant wind chill should be expected.
Altitude 375 metres
Rainfall measured at 03:00 Wednesday, 18 December 2013
Rainfall data provided by the Environment Agency. The Met Office is not responsible for content provided by third parties and may remove this data without warning.
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