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Yorkshire Dales mountain area forecast

Forecast issued: 0453 on Wednesday, 23 April 2014

Overview for Wednesday

A cloudy start then bright spells and the odd shower through the day. More persistent, sometimes heavy rain arriving in the evening.

Hazards

Medium risk of Persistent extensive hill fog: Persistent hill fog early and late, giving the potential for navigational difficulties.

Low risk of Thunderstorms: A risk of lightning strikes in heavy outbreaks of rain in the evening.

Low risk of Heavy persistent rain: Persistent heavy rain possible by evening, reducing visibility with difficult conditions underfoot

Low risk of Strong sunlight: The UV index will be moderate.

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

Weather summary and probability of precipitation for Wednesday

Dawn to 0900 Cloudy Cloudy 40% chance of precipitation
0900 to 1200 Sunny intervals Sunny intervals 40% chance of precipitation
1200 to 1500 Light rain showers Light rain showers 60% chance of precipitation
1500 to dusk Light rain showers Light rain showers 60% chance of precipitation

Detailed mountain weather forecast

Wednesday

Weather

Cloudy and misty overnight, with some light rain possible. Cloud should lift and break in the morning to leave bright spells. There may be a few showers, but it should be dry for the most part during the day. However, through the evening outbreaks of rain may turn more persistent with a risk of heavier, thundery bursts, continuing into the night.

Visibility

Moderate, locally poor in mist at first. Becoming generally good during the morning. Moderate in any showers, perhaps poor in heavier rain during the evening. Very poor in hill fog.

Hill fog

Areas of hill fog above 400 metres in the morning, perhaps down to 200 metres in the east lifting. This slowly breaking and lifting above the summits by the afternoon. Periods of hill fog above 300 metres in associated with heavy rain in the evening.

Maximum winds above 400m

Southerly 30 mph.

Temperature

Valleys: Plus 7 Celsius rising to plus 16 Celsius in the afternoon.
700 m: Plus 7 Celsius.
Freezing level: Above the summits.

Thursday

Weather

Cloudy with outbreaks of heavy through the early hours of the morning. Quickly brightening through the morning, although scattered, heavy and perhaps thundery showers will develop by the afternoon with a risk of hail. Showers tending to ease through the evening. Perhaps turning cloud again with light rain overnight, mainly in the east.

Visibility

Moderate or poor at first in rain and very poor in hill fog. Good or very good through the day, but moderate in heavy showers.

Hill fog

Periods of hill fog above 300 metres in the morning, with occasional patches down to 100 metres in heavier pulses of rain. Cloud then lifting above the summits in the morning. Persistent hill fog returning in the east above 200 metres by midnight.

Maximum winds above 400m

Southerly 25 mph.

Temperature

Valleys: Plus 8 Celsius rising to plus 16 Celsius.
700 m: Plus 6 Celsius.
Freezing level: Above the summits.

Outlook

Friday

A cloudy start with light rain or drizzle and hill fog, mainly affecting eastern areas. Cloud may break to give some sunny spells through the afternoon, with this most likely in the west, although with a risk of occasional showers. Cloudy again overnight with further outbreaks of rain and hill fog. Light winds.

Saturday

Cloudy throughout much of the day with outbreak of rain and periods of hill fog. Easterly winds will pick up through the morning.

Sunday

Another largely cloudy day, with a risk of hill fog and outbreaks of rain or showers. Breezy easterly winds should ease through the day. Perhaps drier by the evening.


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