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Brecon Beacons

Weather hazards over 300m on Sun 04 Dec 2016

High risk

No high risks
none

Medium risk

Severe chill effect
Some significant wind chill effects at higher levels.

Low risk

Gales
Risk of gales over the most exposed peaks.

No risk

Blizzards
none
Heavy snow
none
Storm force winds
none
Persistent extensive hill fog
none
Thunderstorms
none
Heavy persistent rain
none
Strong sunlight
none

Sun 04 Dec 2016

It will be a dry day with plenty of sunshine and just some patchy cloud. It will remain cold with some frozen ground at higher levels. Ragged patches of hill fog are also possible during the morning.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Sunny day Sunny day Sunny day Sunny day Clear night Partly cloudy night
Precipitation probability
0% 0% 0% 0% 0% 0%

Visibility

Generally good to very good, though poor to very poor in any ragged patches of hill fog at first.

Hill Fog

Ragged patches at 200m during the morning, but soon clearing.

Max wind above 400m

Easterly 30-40mph, perhaps 45mph at times.

Temperature

Valleys:
Minus 3 Celsius becoming Plus 5 Celsius.
800m:
Minus 1 Celsius.
Freezing level:
Around 500m.

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
0300 on Sun 4 Dec 2016
Last 24 hours:
0.0 mm
Last 48 hours:
0.2 mm
Last 72 hours:
0.4 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.

Mon 05 Dec 2016

Some clear spells at first, but cloud increasing by dawn, with the rest of the day remaining cloudy and misty with extensive hill fog likely. Cold and remaining mainly dry with just some drizzle possible at times.

Visibility

Generally moderate or poor, but very poor in hill fog.

Hill Fog

Generally blanket to overcast above 300 to 400m.

Max wind above 400m

East to southeasterly 25 to 30mph.

Temperature

Valleys:
Minus 2 Celsius becoming Plus 6 Celsius.
800m:
Minus 2 Celsius, becoming plus 1 Celsius.
Freezing level:
Around 500m at first, rising above the summits later.

Tue 06 Dec 2016

Rather cloudy, and less cold than recently with freezing level above the summits. Whilst the odd spot of rain is possible, these will be few and far between. However there will be fairly extensive hill fog above 300-400m. Moderate to fresh southerly winds.

Wed 07 Dec 2016

Cloud will gradually thicken from the west with some outbreaks of rain. This will lead to some persistent hill fog above 400m. Milder with freezing level well above the summits. Fresh to strong south to southwest winds.

Thu 08 Dec 2016

Remaining generally cloudy with some outbreaks of rain and hill fog. Moderate to fresh southwest winds and freezing level well above the summits.

Issued at: 0340 on Sun 04 Dec 2016