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Brecon Beacons

Weather hazards over 300m on Sat 25 Apr 2015

High risk

No high risks
none

Medium risk

Persistent extensive hill fog
Areas of broken base above 600m, mainly in afternoon rain.

Low risk

Heavy persistent rain
Rain may be heavy and persistent later in the day.

No risk

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

Sat 25 Apr 2015

Mainly dry through the morning with some bright spells, but generally large amounts of cloud with a few spots of rain possible. Cloud will thicken by midday and some of rain or showers are expected during the afternoon, becoming heavy at times by evening.

Time
0600 to 0900 0900 to 1200 1200 to 1500 1500 to 1800 1800 to 2100 2100 to 2400
Weather
Sunny intervals Cloudy Cloudy Light rain Heavy rain Light rain
Precipitation probability
10% 10% 20% 40% 80% 50%

Visibility

Mainly good, but becoming moderate to poor in rain, and very poor in hill fog.

Hill Fog

Broken to overcast above about 500m, mainly during the afternoon and evening.

Max wind above 400m

Southwesterly 25mph with gusts 40mph.

Temperature

Valleys:
Plus 7 Celsius becoming Plus 13 Celsius.
800m:
Plus 5 Celsius.
Freezing level:
Above the summits

Recent Rainfall

Location:
Neuadd Rain (near Pontsticill)
Altitude:
353 m
Rainfall measured at:
0300 on Sat 25 Apr 2015
Last 24 hours:
0.2 mm
Last 48 hours:
0.2 mm
Last 72 hours:
0.2 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: 0332 on Sat 25 Apr 2015

Sun 26 Apr 2015

A mainly dry and bright day is expected with sunny spells. Brisk northerly winds will make it feel substantially colder than of late, with temperatures close to freezing at the highest elevations. Winds gusting to 30mph across summits.

Visibility

Good or very good.

Hill Fog

None expected.

Max wind above 400m

Northerly or northwesterly 15-20mph with gusts 30mph.

Temperature

Valleys:
Plus 3 Celsius becoming Plus 9 Celsius.
800m:
Minus 1 Celsius becoming plus 2 Celsius.
Freezing level:
600m rising above the summits during the morning.

Issued at: 0332 on Sat 25 Apr 2015

Mon 27 Apr 2015

Another generally fine and dry day is expected with just a chance of some sharp showers during the afternoon and evening period. Showers wintry above 500m. Winds will be brisk northwesterly and remaining very cold across summits where winds will gust 35mph later in the day.

Issued at: 0332 on Sat 25 Apr 2015

Tue 28 Apr 2015

Staying on the cold side with a cloudier day in prospect along with showers or perhaps a longer spells of rain during the morning. Drier and brighter for the afternoon with a few showers and winds gusting 40-45mph.

Issued at: 0332 on Sat 25 Apr 2015

Wed 29 Apr 2015

Some doubt about the weather for Wednesday but currently it looks like a dry and bright start to the day before wet and very windy conditions spread quickly across from the southwest, with gales likely across ridges and summits.

Issued at: 0332 on Sat 25 Apr 2015