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Brecon Beacons

Weather hazards over 300m on Fri 28 Oct 2016

High risk

Persistent extensive hill fog
Widespread hill fog likely down to 250 m throughout the day

Medium risk

No medium risks

Low risk

No low risks

No risk

Heavy snow
Storm force winds
Severe chill effect
Heavy persistent rain
Strong sunlight

Fri 28 Oct 2016

Some clear spells during the early hours, but becoming mainly overcast with low cloud and high humidity. Widespread hill fog can be expected above 250 metres, with a little light rain or drizzle perhaps on west-facing upslopes. Further east, mainly dry with a better chance of the odd brighter spell. Winds will be light and westerly. Remaining mostly dry and calm overnight with low cloud.

0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Fog Cloudy Cloudy Cloudy Cloudy Fog
Precipitation probability
20% 20% 10% 10% 10% 0%


Poor or very poor with widespread low cloud.

Hill Fog

Widespread above 250 metres in general. Some shelter along eastern slopes.

Max wind above 400m

Westerly 25 mph.


Plus 12 Celsius, possibly 15 Celsius in the east if any bright spells develop.
Plus 9 Celsius
Freezing level:
Well above the summits.

Recent Rainfall

Neuadd Rain (near Pontsticill)
353 m
Rainfall measured at:
0300 on Fri 28 Oct 2016
Last 24 hours:
0.0 mm
Last 48 hours:
0.8 mm
Last 72 hours:
1.0 mm

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.

Sat 29 Oct 2016

A cloudy start with low cloud again, perhaps now more prevalent in the south and east with light winds. There is a better chance that cloud will lift or break up a little through the day, allowing a little more brightness during the afternoon and less in the way of hill fog. It should remain dry throughout and relatively mild.


Generally poor during the morning, perhaps improving during the afternoon.

Hill Fog

Widespread to 250 metres first thing, but potentially rising to 400 or 500 metres during the afternoon.

Max wind above 400m

Southeasterly 15 mph.


Plus 14 Celsius
Plus 10 Celsius
Freezing level:
Well above the highest summits.

Sun 30 Oct 2016

Another day of light southeasterly winds, mild conditions and variable amounts of cloud. Occasional hill fog can be expected above 400 metres. There is a chance that skies might be clear above 850 metres due to a low inversion. Freezing levels well above the highest summits.

Mon 31 Oct 2016

Remaining dry with a better chance of a bright day with sunshine, and less in the way of low cloud and perhaps no hill fog. Still remaining mild with daytime temperatures into the low teens. Perhaps some valley fog first thing. Freezing levels well above the highest ridges.

Tue 01 Nov 2016

Still likely to be dry with valley fog in the morning, and perhaps some sunny spells mixed with variable amounts of cloud during the day. Light winds expected with temperatures remaining above average for the time being.

Issued at: 0343 on Fri 28 Oct 2016