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yellow Warnings have been issued for the United Kingdom

Brecon Beacons

Weather hazards over 300m on Sat 25 Oct 2014

High risk

No high risks
none

Medium risk

Gales
Winds will gust to 55mph at times across the summits.

Low risk

Severe chill effect
Temperatures will feel closer to zero across the highest summits.
Persistent extensive hill fog
Occasional patches above 500m, perhaps extensive across southern and western summits this morning.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Thunderstorms
none
Heavy persistent rain
none
Strong sunlight
none

Sat 25 Oct 2014

It will be much drier and brighter day with some sunny spells. There will still be a few outbreaks of rain or drizzle at times, although sheltered eastern areas should remain largely dry throughout. The southwesterly wind will remain strong, with gales over the highest summits leading to significant buffeting and a marked wind chill.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Light shower day Light shower day Sunny intervals Sunny intervals Light shower night Light shower night
Precipitation probability
40% 30% 20% 20% 30% 30%

Visibility

Generally very good, but very poor in the drizzly outbreaks and less than 100 metres where shrouded in the cloud.

Hill Fog

Occasional patches of hill fog above 500m, particularly during the drizzly outbreaks. However, cloud bases may be rather extensive above 700m through the morning in the west, before breaking up into the afternoon.

Max wind above 400m

Southwesterly 35-45mph, gusting to 50-55mph at times over summits.

Temperature

Valleys:
Plus 5 becoming 15 Celsius
800m:
Plus 6 Celsius
Freezing level:
Above the summits.

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
0300 on Sat 25 Oct 2014
Last 24 hours:
4.6 mm
Last 48 hours:
10.2 mm
Last 72 hours:
10.2 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.

Issued at: 0340 on Sat 25 Oct 2014

Sun 26 Oct 2014

Variable, often large, amounts of cloud through the day. However the cloud will break at times to reveal some sunny spells, especially sheltered eastern hills. The cloud will be thick enough at times for a few drizzly outbreaks. Despite the mild temperatures it will feel much colder in exposure to the wind.

Visibility

Generally good, but poor in any drizzly showers and very poor in the hill fog.

Hill Fog

Cloud bases will vary markedly through the day. Periods of hill fog above 500m, especially near the drizzly outbreaks. However, during the morning, the hill fog may be rather extensive across southern and western hills.

Max wind above 400m

Southwesterly 35-45mph with gusts 55-60mph.

Temperature

Valleys:
Plus 6 becoming 15 Celsius
800m:
Plus 6 Celsius
Freezing level:
Above the summits.

Issued at: 0340 on Sat 25 Oct 2014

Mon 27 Oct 2014

A similar day on Monday, cloudy with occasional hill fog and a few drizzly outbreaks, but some sunny spells in the east. The hill fog may become extensive later in the day. The winds will remain strong, with gales likely across the summits and ridges.

Issued at: 0340 on Sat 25 Oct 2014

Tue 28 Oct 2014

A cloudy and wet day across the park with extensive hill fog and outbreaks of rain. The rain may turn persistent for a time, especially in the west. The strong southwesterly winds will abate through the day.

Issued at: 0340 on Sat 25 Oct 2014

Wed 29 Oct 2014

Cloud, occasional rain and hill fog will persist through the day. Light to moderate easterly winds.

Issued at: 0340 on Sat 25 Oct 2014