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Friday, 20 December 2013: dawn to dusk
Printable view Forecast issued: 1555 on Friday, 20 December 2013
Persistent rain and strong winds during the early hours, then clearing before dawn to less windy, showery conditions.
|Heavy snow||No Risk|
|Storm force winds||Low||Low risk of the odd gust close to 70 mph during the early hours of Saturday over highest peaks.|
|Gales||High||Consistent gusts 50-60 mph over highest peaks until 3am.|
|Severe chill effect||Low||Heavy rain combined with gales could lead to discomfort during the early hours.|
|Persistent and extensive hill fog||No Risk|
|Thunderstorms||Low||Low risk of lightning strikes during the afternoon and evening period with heavy showers.|
|Heavy persistent rain||No Risk|
|Strong Sunlight||No Risk|
|Dawn to 0900||0900 to 1200||1200 to 1500||1500 to dusk|
Heavy rain showers
After midnight early Saturday morning, strong winds and occasional heavy rain will clear before dawn. Gales are highly likely over exposed ridges and peaks. Mainly dry through the rest of the morning with moderate to strong southwesterly winds, and bright spells. Scattered showers before midday, some heavy, but not wintry. A more organised, but brief spell of heavy rain is likely a couple of hours after dark.
Very good after sunrise with limited hill fog. Generally staying good but falling to moderate in any heavy showers during the afternoon.
Limited, perhaps some blanket hill fog above 500 metres before dawn with wet and windy weather, then patches above 500 metres after dark.
Southwest 50-60 mph until 3am, then easing to southwest 35 mph.
|Valleys||Plus 8 Celsius|
|600 m||Plus 6 Celsius|
|Freezing level||Well above the summits.|
Fairly windy conditions continue with scattered heavy showers and moderate to strong southwesterly winds. It will also be a little colder than Saturday, with slightly lower freezing levels, so there's the chance of wintriness from the showers over highest peaks. Also a low to medium risk of lightning from any particularly heavy showers.
Generally good but falling to moderate or poor during any showers.
Minimal, perhaps some brief occurrences over 500 metres in and around shower clouds.
West-southwest 40 mph.
|Valleys||Plus 5 Celsius|
|600 m||Plus 1 Celsius|
|Freezing level||Around 700 metres.|
Very strong winds with storm force gusts likely over exposed peaks and ridges, accompanied with very heavy and persistent rain and drizzle, most of this through the afternoon and overnight period. There is a small chance this rain will be briefly preceded by sleet or snow, but currently looks unlikely.
Monday's very wet and windy weather should eventually clear during the early hours of Tuesday morning, leaving very wet ground, but drier, clearer and less windy conditions through the rest of Tuesday. Isolated showers are possible again, perhaps wintry over highest peaks. Largely dry overnight with a risk of ice.
Remaining cold with much lighter winds than of late, and still a few wintry showers to watch out for, especially later in the day and overnight with a risk of snow. Freezing levels around or just below the summits.
Altitude 511 metres
Rainfall measured at 15:00 Friday, 20 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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