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Brecon Beacons

Weather hazards over 300m on Wed 01 Oct 2014

High risk

No high risks
none

Medium risk

Persistent extensive hill fog
Patchy cloud as low as 400m at times, particularly in the west.

Low risk

Strong sunlight
Very low risk in sunny spells.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Gales
none
Severe chill effect
none
Thunderstorms
none
Heavy persistent rain
none

Wed 01 Oct 2014

A cloudy start with patchy rain, particularly for northern and western slopes. The rain will be mainly light and many eastern ranges may well stay dry. The cloud will gradually lift through the day, but cloud bases are likely to vary from 400m to 700m through the majority of the day as some further patchy rain moves southeastwards later on. A clear and chilly end to the night will then follow.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Partly cloudy night Sunny intervals Cloudy Cloudy Partly cloudy night Partly cloudy night
Precipitation probability
20% 20% 40% 40% 10% 0%

Visibility

Becoming excellent, moderate in rain and very poor in hill fog.

Hill Fog

Periods above 400m, becoming patchy and generally rising to 700m over eastern slopes. Perhaps clearing the summits very late in the day.

Max wind above 400m

Westerly 15-20mph, isolated gusts to 30mph over the highest peaks.

Temperature

Valleys:
Plus 13 Celsius becoming plus 19 Celsius.
800m:
Plus 10 Celsius.
Freezing level:
Above the summits.

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
0300 on Wed 01 Oct 2014
Last 24 hours:
0.8 mm
Last 48 hours:
1.2 mm
Last 72 hours:
1.2 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: 0400 on Wed 01 Oct 2014

Thu 02 Oct 2014

A chilly start with a localised grass frost possible in the valleys. It will be a mainly dry day with light winds and variable cloud, bringing some sunny spells across the range, however winds will start to freshen through the latter part of the day. There is a risk of sunburn to those walking for prolonged periods.

Visibility

Generally very good or excellent.

Hill Fog

Occasional patches above 500m.

Max wind above 400m

Southwesterly 35mph later.

Temperature

Valleys:
Plus 4 Celsius becoming plus 18 Celsius.
800m:
Plus 7 Celsius.
Freezing level:
Above summits.

Issued at: 0400 on Wed 01 Oct 2014

Fri 03 Oct 2014

Increasingly windy throughout the day, with gales possible into the overnight period over the highest peaks. It will be a dry and clear start with sunny spells through the morning. Cloud will increase through the day with rain, heavy at times arriving through the evening.

Issued at: 0400 on Wed 01 Oct 2014

Sat 04 Oct 2014

A windy day across the ranges, but easing slightly through the afternoon. Rain overnight will clear through the morning to leave a generally dry afternoon with sunny spells and an isolated shower. Feeling cooler than of late with temperatures near normal for the time of year.

Issued at: 0400 on Wed 01 Oct 2014

Sun 05 Oct 2014

A breezy day with a mix of sunshine and showers. The showers will be heavy at times with a risk of hail and thunder.

Issued at: 0400 on Wed 01 Oct 2014