Originally Posted by bobofthenorth
I've noticed the same thing along the BC coast - sometimes 2 tide stations close to each other with significantly different predictions, sometimes conflicting current predictions. Personally I'm inclined to trust nothing - when I run into this situation I consult Ports & Passes and then I assume that even if they all agree all of the information might be wrong. We saw a situation at Hole in the Wall this spring where Fugawi
, OpenCPN and Ports & Passes all agreed on the current change and all were out by at least an hour.
when you spot these,please take a note and post em..particularly as you have in the last,of stations conflicting with whatever data you
are using and the date.
The current and tide stations in this area are rooted from two sources(into xtide)...
One is from the Americans,the NOAA,the other is from a Canadian.The Canadian current stations are few (as in the CHS tidebook).I would like to have these IN CAPITALS...the American NOAA ones pop up in many places-in some cases they duplicate Canadian stations but with a different source harmonic ...
You are likely aware that publications describing themselves as Canada
Tide Tables may also be using NOAA data ...personally,I'm a fan of CHS tidebooks but I like the extra stations too,if
they can be shown to be accurate.
If you find that "hour" as a consistent error,it could be a time zone problem in the harmonics or
and then there's the fact
that big runoffs and rains WILL throw out any current tables,particularly in the area you mentioned this spring might be an excellent example,increasing as to ebb,reducing and delaying the flood...at least on the surface depths
the Canadian tides
are a bit odd alright,because there are metric and
foot calculations...the bars have often been placed atop each other so only one may show.I mean to separate these to keep visiting Americans and Euro's happy .
again,anomalies you see will be interesting in the detail.