A combination of high tides and strong east south-easterly winds during Storm Agnes means that there is a risk of wave overtopping, spray and debris resulting in hazardous conditions which may result in the closure of the Churchill Barriers.
Thundery showers on Sunday afternoon and evening could cause flooding impacts from surface water.
The risk is greatest around the times of high tides particularly on Wednesday morning which is around 09:30 GMT at Stromness and 10:30 GMT at Kirkwall.
Flooding impacts are expected around the time of Thursday mornings high tide (11.15 GMT)
Due to strong winds and large waves there is a risk of spray and wave overtopping of exposed causeways late on Sunday night and early Monday morning.
Windy with southerly gales and feeling fresher. Maximum temperature 7 °C.
This alert is for coastal flooding. Due to a combination of high tides and strong winds, there is a risk of flooding from still water level, waves and spray overtopping to low lying coastal areas on Sunday 8th.
Locally heavy rain is expected to affect the area during Tuesday.
Feeling cold. Maximum temperature 7 °C.
Locally heavy rain may affect the area during Tuesday. There is a risk of localised flooding of land and roads from surface water and small watercourses.