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Brecon Beacons mountain area forecast

Forecast issued: 1659 on Friday, 19 September 2014

Overview for Saturday

Any remaining showers clearing soon after midnight then mostly dry with low cloud and some hill fog. Gradually brightening up through the day.

Hazards

Medium risk of Persistent extensive hill fog: Periods above around 200 metres in the morning.

Low risk of Strong sunlight: Low risk of sunburn during sunny spells.

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

Weather summary and probability of precipitation for Saturday

Dawn to 0900 Cloudy Cloudy 0% chance of precipitation
0900 to 1200 Mist Mist 0% chance of precipitation
1200 to 1500 Cloudy Cloudy 0% chance of precipitation
1500 to dusk Sunny intervals Sunny intervals 0% chance of precipitation

Detailed mountain weather forecast

Saturday

Weather

Any remaining showers will clear soon after midnight leaving mostly dry conditions with low cloud and some hill fog. It will gradually brighten up through the day with some warm sunny spells in the afternoon but also a low risk of a shower. Clear spells will last into the evening.

Visibility

Moderate or poor, but very poor in hill fog. Becoming good as cloud lifts and breaks.

Hill fog

Periods above around 200 metres in the morning, lifting and breaking through the morning.

Maximum winds above 400m

Northeasterly 30 mph in the evening.

Temperature

Valleys: Plus 15 rising to 20 Celsius.
800 m: Plus 13 Celsius.
Freezing level: Above the summits.

Sunday

Weather

It should stay dry throughout with some patches of cloud during the early hours, clearing by dawn to give a sunny morning. A little cloud may fill in during the afternoon. Winds will be light and visibility will be much improved.

Visibility

Very good or excellent.

Hill fog

Occasional patches above 600 metres during the early hours.

Maximum winds above 400m

Northeasterly 30 mph.

Temperature

Valleys: Plus 12 rising to 19 Celsius.
800 m: Plus 8 Celsius.
Freezing level: Above the summits.

Outlook

Monday

A chilly start to the day but dry throughout with light winds and occasional patches of hill fog towards the higher peaks. It will feel cooler than of late but visibility should remain very good.

Tuesday

Dry at first but turning cloudier from the northwest with outbreaks of light rain possible in the afternoon. Winds will be light and westerly.

Wednesday

Any rain soon clearing to the southeast leaving a dry day with variable amounts of cloud. Some bright spells are possible but winds will strengthen from the west to northwest.


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