Y Tywydd Arfordir a Môr


Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Rhagolwg Arfordirol

A 24 hour weather forecast for 24 UK coastal areas

Tablau Llanw

Tidal information supplied by the UK Hydrographic Office

Dyfroedd Gyda'r Glannau

There are strong wind warnings in 16 areas.

There is a gale warning in 1 area.

A shallow ridge of high pressure crossing the southeastern half of England during Thursday evening will move away northeastwards overnight. Areas of low pressure will then bring unsettled conditions with showers or longer spells of rain and often gusty winds, especially to western and southern areas.

Rhagolwg Llongau

There are gale warnings in 5 areas.

The general synopsis at midday

Low Cromarty 1001 expected Bailey with little change by midday tomorrow. New low expected Ireland 991 by same time

Rhagolwg Estynedig

The Extended Outlook aims to signpost expected hazards for the Cullercoats, Niton and Portpatrick areas for the three days beyond the 24 hour shipping forecast.

Moroedd Uchel

The general synopsis at 20 July 19:00 UTC

At 201200UTC, developing Atlantic low near 56 north 15 west expected western Ireland 991 by 211200UTC. Low 56 north 46 west 1007 expected 58 north 37 west 997 by same time. Low 58 north 01 west 1001 expected 60 north 11 west 1001 by that time. at 201200UTC, high 42 north 31 west 1029 slow-moving, declining 1027 by 211200UTC. High 70 north 14 east 1021 expected 71 north 09 east 1023 by same time. New low expected 64 north 10 east 1011 by that time. Low 59 north 19 west 994 moving steadily south and losing its identity