Aug 6
Everywhere else I've checked is right. Bristol reads about an hour early for two or three days after a spring tide, then sorts itself out.
I sail there most weekends so I've now watched it happen twice.
TidelinemacOS
Tide times and surf forecasts in your menu bar.
Bristol Reads Early
2 Replies
Support TeamAug 6
Rob, the detail that it corrects itself after a couple of days narrows this a lot. Thank you. We'll post here when we know more.
Support TeamAug 7
Found it. The Bristol Channel has one of the largest tidal ranges in the world and our interpolation between station readings assumes a smaller one, so the curve skews for a few days after a spring.
Fixing the interpolation rather than special-casing the station, because anywhere else with a big range will be doing the same thing quietly.