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Brecon Beacons

Weather hazards over 300m on Fri 24 Oct 2014

High risk

Persistent extensive hill fog
Persistent and extensive hill fog through the morning, slowly lifting and breaking through the day.

Medium risk

Severe chill effect
Chilly this afternoon, particularly over the highest routes where it will feel close to freezing.

Low risk

Gales
The southwesterly winds may gust to gale force over the peaks through the first half of the day.
Thunderstorms
Low risk of isolated lightning in heavy rain this morning.
Heavy persistent rain
Rain will turn more persistent for a time this morning and may last for 3 hours.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Strong sunlight
none

Fri 24 Oct 2014

It will be a cloudy and windy morning with extensive hill fog and outbreaks of rain or drizzle. It may become wet and slippery underfoot as the rain turns more persistent for a time this morning, but it should clear by early afternoon with hill fog starting to lift and break. A much drier and brighter end to the day with some sunny spells developing, however it will feel cool in the breeze.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Heavy rain Heavy rain Light rain Sunny intervals Partly cloudy night Partly cloudy night
Precipitation probability
90% 70% 30% 10% 10% 10%

Visibility

Poor to very poor in hill fog and rain or drizzle this morning, improving through the morning to become good by the afternoon.

Hill Fog

Extensive and persistent hill fog above 400m, with periods down to 200m, mainly in the west. This will lift and break by mid afternoon.

Max wind above 400m

Southwesterly 40-50mph, easing to become westerly 30-35mph.

Temperature

Valleys:
Plus 11 Celsius becoming 15 Celsius
800m:
Plus 9 Celsius becoming Plus 4 Celsius
Freezing level:
Above the summits.

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
0300 on Fri 24 Oct 2014
Last 24 hours:
5.6 mm
Last 48 hours:
5.6 mm
Last 72 hours:
15.6 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: 0347 on Fri 24 Oct 2014

Sat 25 Oct 2014

It will be much drier and brighter day on Saturday with some sunny spells, but also a few drizzly showers. It will be cloudiest through the evening when there is a risk of some patchy hill fog in the west. Feeling quite chilly in the wind which will be strong at times, especially through the afternoon when there is a risk of gales over the highest routes.

Visibility

Generally good, but moderate in patchy rain or drizzle, and very poor in hill fog.

Hill Fog

Occasional patches down to 500m in the west by evening.

Max wind above 400m

Southwesterly 35-40mph, increasing to 45-50mph through the afternoon.

Temperature

Valleys:
Plus 5 Celsius becoming plus 14 Celsius.
800m:
Plus 4 Celsius becoming Plus 7 Celsius.
Freezing level:
Above the summits.

Issued at: 0347 on Fri 24 Oct 2014

Sun 26 Oct 2014

A windy and generally cloudy day, with some patchy rain and hill fog possible. This is most likely in the west, with eastern hills more likely to see some brighter weather. Feeling cool in the wind. There is a risk of gales over higher summits.

Issued at: 0347 on Fri 24 Oct 2014

Mon 27 Oct 2014

A similar day on Monday with occasional hill fog and a few light showers, but some brightness in the east. It won't be as windy as on previous days, however it will still be breezy.

Issued at: 0347 on Fri 24 Oct 2014

Tue 28 Oct 2014

Cloudy with all parts seeing some patchy rain and hill fog at times through the day, and perhaps some more persistent rain later in the afternoon and evening. It will be breezy at first, but winds will ease later.

Issued at: 0347 on Fri 24 Oct 2014