Glasgow looks set to be hit by a thunderstorm today as thousands descend on the city for the Old Firm clash and the Kiltwalk
Forecasters have warned of heavy showers spreading into the city between noon and 9pm tonight.
The yellow alert explains that flooding could be a problem, and there is a good chance that driving conditions may be difficult, with standing water and spray on the roads, causing delays. Rail journeys could also be affected.
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Tens of thousands off Rangers and Celtic fans will head to Hampden today for the sell out Scottish Cup semi-final kick of at 1.30pm.
Meanwhile the thousands taking part in the Glasgow Kiltwalk leaving from Glasgow Green this morning heading to Balloch on the 22 mile charity challenge, could be caught up in the worst of the weather, with warnings also in place for the Dumbartonshire area.
In a warning published this morning, the Met Office said: "Heavy showers and thunderstorms over Northern Ireland are expected to spread into parts of southern Scotland later this afternoon before fading later this evening. "
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