Early on Tuesday a deepening area of low pressure will move east across northern Scotland bringing rain, which will be heavy at times, especially across Scotland and Northern Ireland.
The rain will be accompanied by strengthening north westerly winds.
Met Office Chief Meteorologist, Andy Page, said, “Of particular concern is a prolonged spell of heavy rain over or close to Shetland during Tuesday.
“A yellow weather warning for rain has been issued. We are also monitoring the potential for a period of strong northwesterly winds, especially for Orkney and perhaps also into parts of the Moray and Aberdeenshire coast.”
“We will continue to assess the need for weather warnings, so please keep up to date with our latest forecasts and warnings for your area.”