Large swathes of Scotland could be hit with heavy showers and thunderstorms on Sunday as a yellow warning comes into effect.
The Met Office said disruption to transport in some places is likely while some regions may experience flooding.
The forecaster expanded its warning – which already blanketed the entire western half of the country – to more eastern areas, including Edinburgh.
It means most of the country – except the far north, north east and most eastern side of the Borders – will be placed under the alert.
The yellow warning for thunderstorms will come into force at 2pm on Sunday and will end at 3am on Monday.
The Met Office said spray and sudden flooding could lead to difficult driving conditions and some road closures.
There is also a “small chance” that flooding could cut some areas off.
“Where flooding or lightning strikes occur, there is a chance of delays and some cancellations to train and bus services,” the forecaster added.
“There is a slight chance that power cuts could occur and other services to some homes and businesses could be lost.”
There is also a small chance that fast-flowing or deep floodwater could cause a danger to life.
The Met Office said: “Heavy showers, some thundery, are likely to break out over parts of western Scotland during Sunday afternoon.
“Further spells of heavy rain, with a chance of thunder in places, most likely the south, follows from the south during Sunday evening.
“Some intense downpours are possible in a few places, giving 20 to 30 mm in less than hour and perhaps 30-50 mm over two to three hours leading to surface water flooding.”
It comes after much of the country experienced clear skies and sunny weather at the weekend, with temperatures rising to the mid-20s in some areas.
On Sunday, the mercury will cool and fall to the mid to high teens and early 20s in a few places.
But the clear skies will begin to end as the risk of thunderstorms and showers increases.
Where are the warnings in place?
Central, Tayside & Fife
- Clackmannanshire
- Falkirk
- Fife
- Perth and Kinross
- Stirling
Highlands & Eilean Siar
SW Scotland, Lothian Borders
- Dumfries and Galloway
- Edinburgh
- Midlothian Council
- Scottish Borders
- West Lothian
Strathclyde
- Argyll and Bute
- East Ayrshire
- East Dunbartonshire
- East Renfrewshire
- Glasgow
- Inverclyde
- North Ayrshire
- North Lanarkshire
- Renfrewshire
- South Ayrshire
- South Lanarkshire
- West Dunbartonshire
Live flood alerts from the Scottish Environment Protection Agency (SEPA) can be found here.
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