Walker on Dismantled Tramway through Gash in Limestone Wall

SWC Walk 307 - Fforest Fawr Traverse (Craig y Nos to Llwyn-y-celyn)

02-May-17 • thomasgrabow on Flickr

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The Black Mountain (Y Mynydd Du)

SWC Walk 307 - Fforest Fawr Traverse (Craig y Nos to Llwyn-y-celyn)

02-May-17 • thomasgrabow on Flickr

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Forest in Bowl below Fan Gyhirych

SWC Walk 307 - Fforest Fawr Traverse (Craig y Nos to Llwyn-y-celyn)

02-May-17 • thomasgrabow on Flickr

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View from Bwlch y Duwynt

SWC Walk 307 - Fforest Fawr Traverse (Craig y Nos to Llwyn-y-celyn)

02-May-17 • thomasgrabow on Flickr

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Pen y Fan and Corn Du beyond Fan Dringarth

SWC Walk 307 - Fforest Fawr Traverse (Craig y Nos to Llwyn-y-celyn)

02-May-17 • thomasgrabow on Flickr

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Bluebells in Craig y Nos Country Park

SWC Walk 307 - Fforest Fawr Traverse (Craig y Nos to Llwyn-y-celyn)

02-May-17 • thomasgrabow on Flickr

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Cribarth, from Rhongyr-uchaf

SWC Walk 307 - Fforest Fawr Traverse (Craig y Nos to Llwyn-y-celyn)

02-May-17 • thomasgrabow on Flickr

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Fforest Fawr traverse : Craig Y Nos to Llwyn Y Celyn walk

Remote mountain traverse: limestone scenery, Fan Gyhirych, a glacial escarpment, great views all around. Bus travel.

Hiking Weather

10 Day Forecast for Craig y Nos

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A bright start, but steadily turning cloudier.

Today:

Cold and bright at first, with patchy frost in places and perhaps the odd shower in northeast Wales. Skies will turn cloudier through the day, although winds will be lighter than recently. Maximum Temperature 10C.

Tonight:

Mainly cloudy overnight, although clear spells may develop leading to areas of fog and a frost in parts of the east. Many dry, although some drizzle possible in the west. Minimum Temperature 6C.

Tuesday:

Generally cloudy with a little drizzle over the hills at times in the south. Some brighter spells will develop in places and it will turn breezier in the west. Maximum Temperature 11C.

Outlook for Wednesday to Friday:

Cloudy on Wednesday with outbreaks of showery rain. Some uncertainty thereafter, but windy on Thursday, although probably mainly dry, bright and cold to end the week with some overnight frost.

Day 6 to 15

Friday looks likely to be wet and possibly very windy in the northwest, and colder and drier in the far east. There could be some snow where the colder air meets the wet weather, most likely over the hills in the north, but it may fall to lower levels in places too. Over next weekend, the weather is likely to be changeable and often windy and cloudy, with showers or longer spells of rain at times. Any snow is most likely on high ground in the north. During the following week, eastern and southern areas may become drier for a time with more sunshine but clearer colder nights would lead to some night frost. Overall, temperatures are likely to be around normal for the time of year.

Day 16 to 30

The early part of this period, including Christmas, is looking fairly changeable with showers or longer spells of rain, possibly wintry over higher ground. Temperatures look likely to be around normal for the time of year. However, later in the month and into the New Year, there is the chance of high pressure becoming established close to the UK. This would bring drier and colder weather, and a greater chance of night frosts. There remains some uncertainty about this; if the high pressure is offset to the west or east of the UK, wet and windy weather would dominate.

Met Office : WL : 2018-12-10T03:16:08

Issued: 0600 on 2018-12-10 for Brecon Beacons

Today

Cold start then dry and bright but cloud increasing with low cloud, mist and patchy drizzle later.

Summary Dry overnight with variable cloud and a frost developing, but also perhaps the odd mist or fog patch. Any mist or fog will lift in the morning then a bright day with some sunshine, but cloud will gradually increase from the west. Low cloud, mist and patchy drizzle is expected to become extensive later in the evening
Chance of Cloud free tops 70%, with patchy cloud near or above the summits, becoming Nil to 30% later in the evening as cloud thickens and lowers.
Ground conditions
Visibility Mostly good or very good, but becoming moderate or poor later in the evening.
Severe Chill Effect: Low Likelihood
Poor Visibility: Medium Likelihood
060708 091011 121314 151617 181920 212223
Weather Cloudy Sunny intervals Sunny intervals Sunny intervals Cloudy Cloudy
Rain 10% 10% 10% 10% 10% 10%
Temp (tops) 3 3 4 4 4 4
Wind (tops) 19 12 11 9 6 8
Freezing Level 900m 900m 900m 900m 1400m 1800m
Day 1

Mainly cloudy and rather misty with quite extensive low cloud and patchy drizzle, though perhaps drier and brighter for a time in the early afternoon, especially over the north of the Park. Heavier rain may arrive from west late evening.

Ice Above the tops
Visibility Moderate or poor, but very poor at height and in cloud.
Wind Rather variable overnight, but mainly south or southwest 10mph. Becoming southeasterly 15mph in the morning but southerly 25 gust 35mph later
Temp Plus 4 or 5 Celsius (at high level)
Day 2

Mainly cloudy with outbreaks of rain, low cloud and patchy mist, though perhaps a drier and brighter spell in the afternoon. Strong or gale force south or southeast winds over the tops.

Day 3

Mainly dry but colder and windy, with east to southeast gales likely across the summits giving a significant chill. Some cloud at times across eastern upslopes.

Day 4

Similar conditions to Thursday, perhaps winds less strong for a time.

Data: Met Office