A yellow weather warning has been issued for southwest Scotland with flooding of homes and roads expected.
The Met Office said people in parts of Dumfries and Galloway and the Borders should be prepared for travel disruption on Thursday afternoon.
As much as 40mm of rain could fall over the area with the warning in place until 5pm.
Slow-moving heavy showers are forecast and are likely to cause localised floods effecting businesses and homes.
Bus services will probably be affected with journey times taking longer and spray and flooding on roads are expected to make drivers’ journey times longer.
STV weather presenter said: “For the rest of Thursday afternoon there is a yellow weather warning in place for rain affecting parts of Dumfries and Galloway.
“Despite the fact that for most of Scotland will see a mixture of dry and bright conditions with one or two isolated showers, there is a pulse of heavier and more organised showery rain spreading in through the afternoon across Dumfries and Galloway where there is a small chance we could see between 30-40mm of rain falling in the space of two to three hours.
“Quite a change from last week when we were experience very hot conditions and high temperatures.
“Unfortunately the unsettled and changeable conditions look set to continue well into the weekend – we have a series of frontal systems moving in from the Atlantic overnight Friday into Saturday bringing blustery conditions and a band of heavy rain – so best look out your brolly for the weekend.”