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Snowdonia

Weather hazards over 300m on Sun 24 Jul 2016

High risk

No high risks
none

Medium risk

Persistent extensive hill fog
Areas of hill fog above 600 metres at times, mainly this afternoon.

Low risk

No low risks
none

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Gales
none
Severe chill effect
none
Thunderstorms
none
Heavy persistent rain
none
Strong sunlight
none

Sun 24 Jul 2016

A dry and bright morning, with some brief sunny spells possible. Thicker cloud develops from late morning, with outbreaks of rain arriving from the west, the rain sometimes heavy. Despite the rain it will feel warm. Becoming dry from the west this evening, with cloud breaks developing.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Partly cloudy night Light shower day Light rain Light rain Light shower day Partly cloudy night
Precipitation probability
10% 60% 70% 80% 60% 0%

Visibility

Generally good or very good this morning and again later this evening, becoming moderate or good this afternoon, and very poor with hill fog.

Hill Fog

Broken above 500 metres this afternoon, mainly across western areas. Hill fog clears this evening from the west.

Max wind above 500m

Southwesterly 10-15 mph, increasing to 20-25 mph this afternoon and evening.

Temperature

Valleys:
Plus 15 becoming Plus 21 Celsius
800m:
Plus 14 Celsius
Freezing level:
Well above the highest summits.

Mon 25 Jul 2016

Dry overnight with clear spells. Monday daytime will be a mix of sunny spells and occasional showers, these most likely across western parts of the Peak District. It will feel much fresher and less warm than recent days.

Visibility

Mainly good or very good. Moderate to good in showers.

Hill Fog

Ragged above 600 metres.

Max wind above 500m

Westerly 25-30 mph.

Temperature

Valleys:
Plus 10 becoming plus 19 Celsius.
800m:
Plus 11 Celsius.
Freezing level:
Well above the highest summits.

Tue 26 Jul 2016

Bright with isolated light showers. Probably cloudier than on Monday, but still some bright or sunny spells will occur. Feeling fresh in the moderate to fresh west or southwest breeze. There is a chance of thick cloud and outbreaks of rain arriving through the evening.

Wed 27 Jul 2016

A changeable day, often cloudy with showers or longer outbreaks of rain, but also some drier and brighter intervals, with a few warm sunny spells possible. Probably feeling more humid than recent days. Fresh west or southwest wind.

Thu 28 Jul 2016

An unsettled day, with large amounts of cloud and showers or outbreaks of rain throughout the day, heavy at times, leading to slippery conditions underfoot. Fresh southwest wind.

Issued at: 0441 on Sun 24 Jul 2016