We have only been collating detailed flood messages since May 2017.
Each Flood Warning may have multiple updates. The messages listed below may therefore be greater than the number of alerts detailed in the Flood Warning table above.
Flood Warning issued on 2 Jan 2018 13:30
At Porthmadog the tide level is expected to reach 4.01 metres above Ordnance Datum. Wave overtopping at the
harbour is expected to occur between 20:00 and 21:00. The properties closest to harbour are most at risk. The high tide
at Porthmadog is at 20:30 on Tuesday 2nd January.