Met Office: Eryri: latest pressure

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Sefyllfa cyffredinol Dydd Sul

It will be a rather cloudy and misty morning with some scattered showers at first, but becoming brighter later and mainly dry.

Peryglon	Risgiau	Eglurhad
Stormydd eira	No Risk
Eira trwm	No Risk
Gwyntoedd nerth storom	No Risk
Tymhestloedd	No Risk
Effaith oeri difrifol	No Risk
Niwl hirbarhaol ac eang dros y bryniau	Medium	Hill fog will be widespread and persistent at times during the morning.
Stormydd o daranau	Low	Low risk of lightning in showers during the morning.
Glaw trwm di-baid	Low	Rain may be persistent at first during the morning, mostly light but locally heavy.

Peryglon

Risgiau

Eglurhad

Stormydd eira

No Risk

Eira trwm

No Risk

Gwyntoedd nerth storom

No Risk

Tymhestloedd

No Risk

Effaith oeri difrifol

No Risk

Niwl hirbarhaol ac eang dros y bryniau

Medium

Hill fog will be widespread and persistent at times during the morning.

Stormydd o daranau

Low

Low risk of lightning in showers during the morning.

Glaw trwm di-baid

Low

Rain may be persistent at first during the morning, mostly light but locally heavy.

Crynodeb a thebygolrwydd gwlybaniaeth Dydd Sul
O'r Wawr hyd 0900	0900 hyd 1200	1200 hyd 1500	1500 hyd Machlud
Light rain showers	Light rain showers	Light rain showers	Light rain showers
70%	60%	30%	10%

Crynodeb a thebygolrwydd gwlybaniaeth Dydd Sul

O'r Wawr hyd 0900

0900 hyd 1200

1200 hyd 1500

1500 hyd Machlud

Light rain showers

70%

60%

30%

10%

Rhagolygon y tywydd manwl ar gyfer y mynyddoedd: Eryri

Dydd Sul
Dydd Llun
Rhagolygon

Dydd Sul

Tywydd

It will be a mainly cloudy and quite misty morning with occasional showers or periods of mainly light rain. Some heavier showers are possible at first. There is a low risk of lightning in heavier showers during the morning. However, conditions should brighten up later in the day with only isolated showers.

Gwelededd

The visibility will be generally moderate at first in mist and rain or showers, and poor in hill fog. Generally moderate or good during the afternoon.

Niwl dros y bryniau

Hill fog will be widespread at first with cloud bases around 500 to 600 metres. Conditions will improve later with cloud bases rising to 700 to 800 metres with only patchy hill fog on the peaks.

Gwyntoedd uchaf uwch ben 500m

Winds northerly speeds 20 to 25 mph with gusts to 40 mph, easing 15 to 20 mph this afternoon

Tymheredd

Dyffrynnoedd	Plus 5 becoming 10 Celsius
900 m	Plus 2 Celsius
Lefel rhewi	The freezing level will be above the tops.

Dydd Llun

Tywydd

It will be a misty start with some valley mist and fog patches and some low cloud on upslopes. Some bright spells may break through during the middle of the day. Cloud will increase through the afternoon with rain arriving in the west by around dusk.

Gwelededd

The visibility will be moderate in mist at first and poor in valley and hill fog. Becoming moderate or good for much of the afternoon period.

Niwl dros y bryniau

Hill fog will be widespread at first with low cloud on hills around 300 to 500 metres. Cloud bases lifting to 700 to 800 metres by midday with only patchy hill fog. Cloud bases may lower to 600 metres as the rain arrives around dusk.

Gwyntoedd uchaf uwch ben 500m

Winds light or moderate northerly speeds 15 to 20 mph, becoming moderate southerly later speeds 20 to 25 mph.

Tymheredd

Dyffrynnoedd	Plus 3 becoming 10 Celsius
900 m	Plus 3 becoming 5 Celsius
Lefel rhewi	The freezing level will be above the tops.

Rhagolygon

Dydd Mawrth

Cloudy with heavy rain at first and widespread hill fog, then becoming brighter and drier with cloud lifting and break. Winds brisk southerly at first, veering northwesterly later and moderating.

Dydd Mercher

Dry at first with a ground frost and mist and valley fog. Bright for a time, then cloud will increase with rain spreading from the south during the afternoon. Hill fog will become more widespread. Winds light at first, strengthening from the southeast later.

Dydd Iau

Rain and low cloud will clear during the morning, then brighter with scattered showers during the afternoon. Winds strong southerly at first, then lighter westerly.