Storm Debi is set to sweep across Angus tomorrow as Brechin and Montrose face 11 hours of rain.
The Met Office has issued a yellow weather morning, which will be in force from 10am to 9pm.
Sepa has issued a flood alert across Dundee and Angus, with a risk of flooding from rivers and surface water.
The potential impact is on low lying properties and land.
The fourth named storm will affect two of the communities devastated by Storm Babet last month.
Part of Brechin was evacuated due to severe flooding, with some residents still unable to return to their homes.
Some areas of the town were only accessible by boat, with a major rescue mission taking place after the River South Esk burst its banks.
The town is still recovering from the effect of the storm, with drivers facing a 50-minute diversion due to resurfacing work being undertaken on the B9134.
Public transport may be disrupted, with passengers advised to expect cancellations and delays.
Motorists can expect spray on the road, making driving more hazardous and increasing journey times.
The warning is also in place across Aberdeenshire.
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