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 Dec05:022.2L12:0812.2H19:003.2L
Sun 02 Dec00:418.3H06:133.4L12:5412.1H19:491.8L
Mon 03 Dec02:089.1H07:224.5L13:3412.1H20:310.5L
Tue 04 Dec03:1810.0H08:255.3L14:1111.9H21:09-0.5L
Wed 05 Dec04:1510.8H09:226.0L14:4611.7H21:45-1.2L
Thu 06 Dec005:0411.4H10:146.5L15:2011.4H22:19-1.6L
Fri 07 Dec05:4611.9H11:036.9L15:5411.0H22:54-1.7L
Sat 08 Dec06:2412.1H11:497.2L16:3010.5H23:28-1.6L
Sun 09 Dec07:0012.2H12:357.3L17:0710.0H
Mon 10 Dec00:05-1.3L07:3512.2H13:227.3L17:489.5H
Tue 11 Dec00:43-0.8L08:1112.1H14:117.1L18:328.9H
Wed 12 Dec01:22-0.1L08:4912.0H15:056.8L19:248.4H
Thu 13 Dec02:050.7L09:2911.8H16:046.3L20:257.8H
Fri 14 Dec02:501.6L10:1111.7H17:045.7L21:397.4H
Sat 15 DecG03:392.7L10:5411.6H17:574.8L23:037.3H
Sun 16 Dec04:353.9L11:3511.6H18:413.7L
Mon 17 Dec00:307.6H05:384.9L12:1411.5H19:192.4L
Tue 18 Dec01:498.4H06:445.8L12:5211.6H19:551.1L
Wed 19 Dec02:539.4H07:466.4L13:2811.6H20:32-0.1L
Thu 20 Dec03:4410.4H08:436.9L14:0511.7H21:10-1.3L
Fri 21 Dec04:3011.3H09:367.2L14:4411.8H21:51-2.3L
Sat 22 Dec@05:1312.0H10:267.4L15:2511.8H22:33-2.9L
Sun 23 Dec05:5612.5H11:167.4L16:1111.7H23:18-3.2L
Mon 24 Dec06:4012.8H12:087.2L17:0011.4H
Tue 25 Dec00:04-3.0L07:2513.0H13:036.8L17:5410.9H
Wed 26 Dec00:52-2.4L08:1113.0H14:026.3L18:5510.2H
Thu 27 Dec01:42-1.3L08:5812.9H15:065.6L20:049.3H
Fri 28 Dec02:330.2L09:4512.8H16:144.6L21:248.6H
Sat 29 DecT03:301.9L10:3312.6H17:233.5L22:598.2H
Sun 30 Dec04:333.6L11:2112.3H18:252.3L
Mon 31 Dec00:468.5H05:465.1L12:0812.1H19:201.1L

QR code: http://www.dairiki.org/tides/monthly.php/sea/2018-12 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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