I thought it might be useful to have a central place for sources of info:
Tides Liverpool - http://www.ntslf.org/tides/tidepred?port=Liverpool
General - http://www.ntslf.org/tides/predictions
Storm surges
Liverpool - http://www.ntslf.org/storm-surges/latest-surge-forecast?port=Liverpool
General - http://www.ntslf.org/storm-surges/surge-forecast
Weather
Rain forecast, Manchester - http://www.metoffice.gov.uk/public/weather/forecast/map/gcw2hzs1u#?zoom=9&lat=53.48&lon=-2.25&map=CloudAndRain&fcTime=1486767600
Rain actual (radar) - http://www.netweather.tv/index.cgi?action=radar;sess=
(note, this is also on the extremely useful App "Netweather Storm Radar") - forecast rainfall to a few minutes !