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 Twin Rivers, Strait of Juan de Fuca, Washington

Time Zone is PDTUnits are feet
Mon 01 Nov05:310.8L11:486.6H18:121.4L23:566.2H
Tue 02 Nov06:170.8L12:237.1H18:590.5L
Wed 03 Nov00:506.5H07:000.9L12:597.6H19:44-0.3L
Thu 04 Nov001:426.7H07:431.1L13:348.1H20:29-0.9L
Fri 05 Nov02:336.8H08:251.5L14:128.4H21:14-1.4L
Sat 06 Nov03:256.7H09:081.9L14:518.5H22:01-1.5L
Time Zone changes to PSTUnits are feet
Sun 07 Nov03:186.6H08:542.3L14:348.3H21:50-1.4L
Mon 08 Nov04:146.3H09:442.7L15:228.0H22:44-1.0L
Tue 09 Nov05:146.1H10:403.0L16:167.4H23:41-0.5L
Wed 10 Nov06:205.9H11:473.2L17:226.8H
Thu 11 NovG00:440.0L07:295.9H13:073.2L18:396.2H
Fri 12 Nov01:500.5L08:346.1H14:312.9L20:015.8H
Sat 13 Nov02:540.8L09:296.3H15:462.3L21:195.7H
Sun 14 Nov03:521.0L10:156.7H16:471.6L22:275.7H
Mon 15 Nov04:421.3L10:547.0H17:361.0L23:245.8H
Tue 16 Nov05:261.6L11:287.2H18:180.4L
Wed 17 Nov00:145.9H06:051.9L12:007.4H18:560.1L
Thu 18 Nov00:586.0H06:422.2L12:307.5H19:30-0.2L
Fri 19 Nov@01:396.1H07:162.5L12:597.5H20:04-0.3L
Sat 20 Nov02:196.1H07:512.8L13:287.4H20:38-0.3L
Sun 21 Nov02:586.1H08:253.0L13:577.3H21:12-0.2L
Mon 22 Nov03:386.0H09:003.3L14:287.1H21:48-0.0L
Tue 23 Nov04:205.8H09:373.5L15:016.8H22:270.2L
Wed 24 Nov05:065.7H10:203.6L15:396.5H23:100.4L
Thu 25 Nov05:565.6H11:133.7L16:276.2H23:590.6L
Fri 26 Nov06:505.6H12:193.6L17:315.8H
Sat 27 NovT00:520.9L07:435.8H13:343.4L18:505.5H
Sun 28 Nov01:481.1L08:326.2H14:472.8L20:125.4H
Mon 29 Nov02:451.3L09:166.6H15:512.0L21:275.5H
Tue 30 Nov03:401.5L09:577.2H16:461.0L22:355.8H

QR code: https://www.dairiki.org/tides/monthly.php/twnr/2021-11 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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