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Brecon Beacons

Weather hazards over 300m on Thu 23 Oct 2014

High risk

Persistent extensive hill fog
Hill fog expected to affect the park through much of today.

Medium risk

No medium risks
none

Low risk

Gales
Winds will strengthen this morning, perhaps reaching gale force over the highest points.
Heavy persistent rain
Outbreaks of drizzle may turn persistent at times, particularly on western facing slopes.

No risk

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

Thu 23 Oct 2014

A cloudy day with extensive hill fog and outbreaks of drizzle which may turn persistent at times on western facing slopes. It will be windy too, with a risk of gales across the highest routes.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Drizzle Drizzle Light rain Light rain Drizzle Drizzle
Precipitation probability
80% 90% 80% 70% 80% 80%

Visibility

Generally poor or very poor in hill fog and drizzle, but possibly moderate in the east during the afternoon.

Hill Fog

Extensive and persistent hill fog above 500m, with periods down to 200m, mainly in the west. Although this may lift and break to become occasional down to 600m for intervals during the afternoon.

Max wind above 400m

Southwesterly 40-45mph.

Temperature

Valleys:
Plus 16 Celsius
800m:
Plus 9 Celsius
Freezing level:
Well above the summits.

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
0300 on Thu 23 Oct 2014
Last 24 hours:
0.0 mm
Last 48 hours:
10.0 mm
Last 72 hours:
20.0 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.

Issued at: 0403 on Thu 23 Oct 2014

Fri 24 Oct 2014

A rather cloudy morning with outbreaks of rain or drizzle and extensive hill fog. This will clear away to the southeast later in the day with clearer and cooler weather following.

Visibility

Generally poor or very poor in rain, drizzle and hill fog through the first part of the day, however it will improve to good as the rain clears later.

Hill Fog

Extensive and persistent hill fog above 500m, with periods down to 200m, mainly in the west. This will lift and break later in the day, however timings are uncertain.

Max wind above 400m

Southwesterly 35-40mph, easing to 30-35 mph later.

Temperature

Valleys:
Plus 8 Celsius
800m:
Plus 14 Celsius
Freezing level:
Well above the summits.

Issued at: 0403 on Thu 23 Oct 2014

Sat 25 Oct 2014

Bright with some clear spells, but also some cloudier spells with some patchy hill fog and perhaps shower or two. It will feel chilly in the strong wind, with possible gale force gusts over the peaks.

Issued at: 0403 on Thu 23 Oct 2014

Sun 26 Oct 2014

Another windy day with gale force gusts possible on higher routes. Generally cloudy, with some showers and hill fog possible. Feeling cool in the wind.

Issued at: 0403 on Thu 23 Oct 2014

Mon 27 Oct 2014

Cloudy on Monday with occasional hill fog and a few light showers. It won't be as windy as on previous days, however it will still be breezy.

Issued at: 0403 on Thu 23 Oct 2014