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Yorkshire Dales mountain area forecast

Forecast issued: 0456 on Friday, 1 August 2014

Overview for Friday

Showers developing through the morning, turning persistent and heavier by evening.

Hazards

Low risk of Persistent extensive hill fog: Higher slopes likely to see hill fog as rain sets in.

Low risk of Thunderstorms: Low risk of rain turning thundery late in the day.

Low risk of Strong sunlight: Exposure to moderate UV levels possible during any sunny spells.

No risk of Blizzards; Heavy snow; Storm force winds; Gales; Severe chill effect; Heavy persistent rain;

Weather summary and probability of precipitation for Friday

Dawn to 0900 Cloudy Cloudy 0% chance of precipitation
0900 to 1200 Light rain showers Light rain showers 80% chance of precipitation
1200 to 1500 Heavy rain showers Heavy rain showers 80% chance of precipitation
1500 to dusk Heavy rain showers Heavy rain showers 90% chance of precipitation

Detailed mountain weather forecast

Friday

Weather

Mostly dry with clear spells through the early hours of Friday. Cloud will build through the day with showers developing through the morning, then more persistent rain developing during the afternoon, turning heavier with a chance of thunder late afternoon onwards.

Visibility

Generally very good but moderate in rain or showers, locally very poor in hill fog patches later.

Hill fog

Well broken or broken bases developing above 600 meters late in the day as rain becomes persistent.

Maximum winds above 400m

Southwesterly 20 to 25 mph turning southerly and easing late in the day.

Temperature

Valleys: Plus 12 Celsius rising to plus 20 Celsius.
700 m: Plus 12 to 14 Celsius.
Freezing level: Above the highest summits.

Saturday

Weather

A fairly miserable day is likely with persistent and at times heavy rain through much of the day. Though the rain may ease at times, and dry or bright spells will be short lived. Extensive hill fog can be expected on higher slopes.

Visibility

Generally moderate to poor, perhaps briefly good should the rain ease for a time.

Hill fog

Broken or blanket bases likely for much of the day above 400 meters, perhaps lifting to 600 meter through daylight hours.

Maximum winds above 400m

Southeasterly to southerly 10 to 15 mph, falling light and variable by mid morning.

Temperature

Valleys: Plus 13 Celsius rising to plus 19 Celsius.
700 m: Plus 12 Celsius becoming Plus 14 Celsius.
Freezing level: Above the highest summits.

Outlook

Sunday

The persistent and heavy rain should gradually clear during Sunday morning. The afternoon will become dry with sunny spells developing. Strong winds for a time, possibly gale force on higher, exposed slopes, the winds easing towards evening.

Monday

Plenty of fine and dry weather is likely on Monday, though a light shower is possible. Mainly light winds so feeling warm in any lengthy spells of sunshine.

Tuesday

Similar to Monday with a good deal of fine, dry weather and just the odd light shower. Winds again light so feeling warm.


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