David Flater (who is author of xtide, the program I use to produce this data) provides the following disclaimer, behind which I firmly stand:

Do not rely on the output of this program for decisions that can result in harm to anyone or anything. Really. I mean it.

Agencies like NOAA exist because there is a need for certifiably correct tide predictions. Please do not rely on XTide if you need guaranteed results. There is no way I can get certified data on a zero budget. I rely on users like you to tell me when something is wrong. Please continue to do so.

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Tidal Heights at Friday Harbor, San Juan Island, San Juan Channel, Washington

Time Zone is PSTUnits are feet
Mon 01 Jan@05:398.6H09:516.9L14:118.3H22:06-2.7L
Tue 02 Jan06:239.1H10:547.0L15:008.2H22:52-2.6L
Wed 03 Jan07:059.4H11:586.9L15:537.9H23:38-2.2L
Thu 04 Jan07:479.5H13:056.6L16:517.4H
Fri 05 Jan00:23-1.5L08:269.5H14:176.0L17:576.7H
Sat 06 Jan01:08-0.4L09:049.4H15:325.2L19:145.9H
Sun 07 Jan01:510.9L09:419.2H16:414.2L20:505.2H
Mon 08 JanT02:352.2L10:169.0H17:403.2L22:514.8H
Tue 09 Jan03:213.6L10:498.7H18:292.2L
Wed 10 Jan01:115.2H04:174.8L11:218.4H19:111.4L
Thu 11 Jan03:006.1H05:365.8L11:528.1H19:470.7L
Fri 12 Jan04:026.9H07:096.5L12:207.8H20:210.2L
Sat 13 Jan04:447.6H08:346.8L12:497.5H20:53-0.2L
Sun 14 Jan05:208.1H09:457.0L13:187.4H21:24-0.5L
Mon 15 Jan05:528.4H10:406.9L13:497.2H21:56-0.7L
Tue 16 Jan006:228.6H11:226.8L14:257.1H22:29-0.7L
Wed 17 Jan06:518.6H11:576.7L15:057.0H23:02-0.7L
Thu 18 Jan07:188.6H12:326.4L15:476.8H23:35-0.5L
Fri 19 Jan07:448.6H13:116.0L16:336.4H
Sat 20 Jan00:08-0.1L08:098.5H13:545.5L17:256.0H
Sun 21 Jan00:420.4L08:348.4H14:404.8L18:275.5H
Mon 22 Jan01:171.0L08:588.3H15:274.1L19:445.0H
Tue 23 Jan01:531.9L09:228.2H16:153.1L21:214.7H
Wed 24 JanG02:342.9L09:488.1H17:032.1L23:234.8H
Thu 25 Jan03:224.0L10:158.0H17:511.1L
Fri 26 Jan01:345.4H04:295.1L10:478.0H18:390.0L
Sat 27 Jan03:036.4H05:586.0L11:238.0H19:27-0.9L
Sun 28 Jan03:597.3H07:266.6L12:088.1H20:16-1.7L
Mon 29 Jan04:438.1H08:416.8L13:018.1H21:04-2.1L
Tue 30 Jan05:238.6H09:466.8L14:008.0H21:51-2.2L
Wed 31 Jan@06:008.9H10:446.5L15:037.8H22:37-1.9L

QR code: http://www.dairiki.org/tides/monthly.php/fri/2018-01 Available online at

The data in the above table was generated using the program xtide, written by David Flater.
No guarantees as to the correctness of this data are made or implied.
Do not rely on it to make decisions which can result in harm to anyone or anything.

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