SMHI says heavy rain or thunderstorms can produce large amounts of rain in a short time.
The warning applies to eastern Norrbotten and affects, among other places, Piteå and Boden. The rain is expected to start at lunchtime and last until 6 p.m. However, it is uncertain exactly where the heaviest precipitation will occur.
SMHI warns of flooding in basements and stormwater systems, and of a risk of aquaplaning on roads.
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