Mark Davies was one of the eyewitnesses, as water cascaded over the wall of a car park after debris blocked a culvert.
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The two projects going head-to-head today are Bala Castle Street Playground and Heronsbridge Re-Cycles.
Cloudy and damp evening and night with low cloud giving hill fog and patchy drizzle
A mostly cloudy and murky day with widespread hill fog and outbreaks of rain.