There is disruption on Arriva Trains Wales between Abercynon South and Merthyr Tydfil due to flooding at Merthyr Vale.
The company says all lines are currently blocked and it does not have an estimate for when a normal service will resume.
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A band of rain pushing in overnight, bringing with it the odd spot of coastal and hill fog, but things should improve by tomorrow.
Local authorities said the move is necessary to "avert the growing number of deaths and increasing harm linked to psychoactive substances".
Sunny and bright spells for most of us this afternoon, feeling pleasantly warm.