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 Seattle, Puget Sound, Washington

Time Zone is PSTUnits are feet
Sat 01 Dec07:1511.9H12:587.2L17:289.5H
Sun 02 Dec00:24-0.9L07:4911.9H13:417.0L18:119.1H
Mon 03 Dec01:03-0.5L08:2411.9H14:286.6L19:008.7H
Tue 04 Dec01:440.2L09:0211.9H15:206.1L20:008.2H
Wed 05 Dec02:281.2L09:4111.9H16:155.2L21:137.8H
Thu 06 DecT03:162.4L10:2111.9H17:104.2L22:367.7H
Fri 07 Dec04:113.7L11:0111.9H18:022.8L
Sat 08 Dec00:068.1H05:155.0L11:4311.9H18:511.3L
Sun 09 Dec01:318.9H06:256.1L12:2512.0H19:37-0.2L
Mon 10 Dec02:4310.0H07:356.8L13:0912.1H20:23-1.6L
Tue 11 Dec03:4211.0H08:397.3L13:5512.2H21:08-2.7L
Wed 12 Dec04:3311.9H09:387.4L14:4212.2H21:54-3.4L
Thu 13 Dec005:2012.5H10:347.3L15:3212.1H22:41-3.6L
Fri 14 Dec06:0612.8H11:287.1L16:2411.8H23:28-3.4L
Sat 15 Dec06:5013.0H12:236.7L17:1911.2H
Sun 16 Dec00:15-2.7L07:3413.0H13:216.1L18:1810.4H
Mon 17 Dec01:02-1.5L08:1712.9H14:215.5L19:219.5H
Tue 18 Dec01:51-0.1L08:5912.7H15:254.7L20:348.7H
Wed 19 DecG02:411.6L09:4212.4H16:303.8L21:588.1H
Thu 20 Dec03:353.4L10:2512.1H17:332.9L23:428.0H
Fri 21 Dec04:385.1L11:0811.7H18:291.9L
Sat 22 Dec01:298.6H05:556.5L11:5211.3H19:181.1L
Sun 23 Dec02:509.6H07:207.3L12:3611.0H20:000.4L
Mon 24 Dec03:4810.5H08:347.7L13:1810.7H20:37-0.1L
Tue 25 Dec04:3311.1H09:327.8L13:5910.5H21:11-0.6L
Wed 26 Dec05:0811.6H10:177.8L14:3910.4H21:44-0.9L
Thu 27 Dec05:3811.8H10:557.7L15:1810.3H22:17-1.1L
Fri 28 Dec@06:0311.9H11:277.5L15:5610.2H22:52-1.2L
Sat 29 Dec06:2612.1H11:597.2L16:3510.1H23:26-1.1L
Sun 30 Dec06:5012.2H12:336.8L17:169.8H
Mon 31 Dec00:03-0.8L07:1812.3H13:106.3L18:029.6H

QR code: http://www.dairiki.org/tides/monthly.php/sea/2012-12 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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