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Brecon Beacons

Weather hazards over 300m on Fri 29 Jul 2016

High risk

No high risks
none

Medium risk

Persistent extensive hill fog
Extensive hill fog at first, gradually breaking through the morning.

Low risk

No low risks
none

No risk

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

Fri 29 Jul 2016

A cloudy start with patchy light rain throughout the morning, Approaching midday the rain may ease for a time, but cloud is expected to remain widespread, with hill fog. Showers then developing through the afternoon, some of them sharp, before slowly easing into the evening.

Time
0000 to 0300 0300 to 0600 0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Light rain Light rain Light rain Cloudy Light shower day Light shower day Light shower day Partly cloudy night
Precipitation probability
30% 20% 20% 0% 20% 20% 20% 0%

Visibility

Moderate or poor in the rain and drizzle, but very poor at times in the more persistent outbreaks.

Hill Fog

Blanket around 400m at first becoming well broken around 400m through the morning and then lifting above the tops. Further ragged cloud around 400m through the late afternoon and evening, mainly in passing showers.

Max wind above 400m

Westerly 20-25mph becoming 10-15mph by the afternoon, then northwesterly later.

Temperature

Valleys:
Plus 13 Celsius rising to Plus 17 Celsius.
800m:
Plus 9 Celsius.
Freezing level:
Above the summits.

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
1500 on Thu 28 Jul 2016
Last 24 hours:
3.4 mm
Last 48 hours:
14.4 mm
Last 72 hours:
14.4 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.

Sat 30 Jul 2016

A dry but cloudy start with isolated showers. The cloud will break as the morning progresses with some bright or sunny intervals likely by late morning. Further showers developing through the afternoon, with some sunny spells.

Visibility

Good or very good, but moderate in any showers.

Hill Fog

Ragged around 400m in any showers during the afternoon.

Max wind above 400m

Northwesterly 10mph becoming 15-20mph later.

Temperature

Valleys:
Plus 8 Celsius rising to Plus 21 Celsius.
800m:
Plus 8 Celsius.
Freezing level:
Above the summits.

Sun 31 Jul 2016

A dry day with sunny intervals and mainly light winds.

Mon 01 Aug 2016

Another dry day, with some mainly light showers possible through the afternoon and evening.

Tue 02 Aug 2016

A dry and generally settled start to the day, with some bright or sunny spells. Rain pushing in from the west through the evening.

Issued at: 1753 on Thu 28 Jul 2016