NOAA station 9445478, Washington
Union tide chart
Friday, October 30Pacific Daylight Time
NOAA harmonic station (NOAA’s page for this station, opens in a new tab)Falling, about 3.3 ft now
As of 11:15 PM PDT
- Next
- Low -1.7 ft at 2:49 AMtomorrow, in 3h 34m
- Then
- High 12.5 ft at 10:48 AMtomorrow, in 11h 33m
Low, passed
1:56 AM
-2.3 ft
High, passed
9:46 AM
12.7 ft
Low, passed
3:08 PM
8.6 ft
High, passed
6:46 PM
10.5 ft
The week ahead
This week’s tides at Union
Every high and low for the next seven days, in feet above MLLW. The 30-day table below has the rest of the month.
| Day | Tide curve | Highs | Lows | Range |
|---|---|---|---|---|
| Fri, Oct 30Range 15.0 ft | 9:46 AM 12.7 ft6:46 PM 10.5 ft | 1:56 AM -2.3 ft3:08 PM 8.6 ft | 15.0 ft | |
| Sat, Oct 31Range 14.2 ft | 10:48 AM 12.5 ft7:35 PM 9.7 ft | 2:49 AM -1.7 ft4:23 PM 8.5 ft | 14.2 ft | |
| Sun, Nov 1Range 13.1 ft | 10:49 AM 12.4 ft7:49 PM 8.6 ft | 2:49 AM -0.7 ft4:42 PM 7.7 ft | 13.1 ft | |
| Mon, Nov 2Range 11.9 ft | 11:42 AM 12.3 ft10:16 PM 7.8 ft | 3:54 AM 0.4 ft5:53 PM 6.4 ft | 11.9 ft | |
| Tue, Nov 3Range 10.7 ft | 12:27 PM 12.3 ft | 5:01 AM 1.6 ft6:49 PM 4.8 ft | 10.7 ft | |
| Wed, Nov 4Range 9.6 ft | 12:18 AM 8.1 ft1:06 PM 12.3 ft | 6:06 AM 2.7 ft7:35 PM 3.2 ft | 9.6 ft | |
| Thu, Nov 5Range 10.6 ft | 1:40 AM 8.9 ft1:40 PM 12.2 ft | 7:06 AM 3.8 ft8:16 PM 1.6 ft | 10.6 ft |
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Union tide table for the next 30 days
Every high and low for the next month, with the daily tidal range.
| Day | Highs | Lows | Range |
|---|---|---|---|
| Fri, Oct 30Range 15.0 ft | 9:46 AM 12.7 ft6:46 PM 10.5 ft | 1:56 AM -2.3 ft3:08 PM 8.6 ft | 15.0 ft |
| Sat, Oct 31Range 14.2 ft | 10:48 AM 12.5 ft7:35 PM 9.7 ft | 2:49 AM -1.7 ft4:23 PM 8.5 ft | 14.2 ft |
| Sun, Nov 1Range 13.1 ft | 10:49 AM 12.4 ft7:49 PM 8.6 ft | 2:49 AM -0.7 ft4:42 PM 7.7 ft | 13.1 ft |
| Mon, Nov 2Range 11.9 ft | 11:42 AM 12.3 ft10:16 PM 7.8 ft | 3:54 AM 0.4 ft5:53 PM 6.4 ft | 11.9 ft |
| Tue, Nov 3Range 10.7 ft | 12:27 PM 12.3 ft | 5:01 AM 1.6 ft6:49 PM 4.8 ft | 10.7 ft |
| Wed, Nov 4Range 9.6 ft | 12:18 AM 8.1 ft1:06 PM 12.3 ft | 6:06 AM 2.7 ft7:35 PM 3.2 ft | 9.6 ft |
| Thu, Nov 5Range 10.6 ft | 1:40 AM 8.9 ft1:40 PM 12.2 ft | 7:06 AM 3.8 ft8:16 PM 1.6 ft | 10.6 ft |
| Fri, Nov 6Range 11.8 ft | 2:47 AM 9.9 ft2:11 PM 12.1 ft | 8:02 AM 4.8 ft8:54 PM 0.3 ft | 11.8 ft |
| Sat, Nov 7Range 12.5 ft | 3:43 AM 10.8 ft2:40 PM 11.9 ft | 8:54 AM 5.8 ft9:31 PM -0.6 ft | 12.5 ft |
| Sun, Nov 8Range 12.9 ft | 4:33 AM 11.6 ft3:06 PM 11.7 ft | 9:44 AM 6.5 ft10:06 PM -1.2 ft | 12.9 ft |
| Mon, Nov 9Range 13.6 ft | 5:18 AM 12.2 ft3:29 PM 11.4 ft | 10:31 AM 7.2 ft10:41 PM -1.4 ft | 13.6 ft |
| Tue, Nov 10Range 13.9 ft | 6:02 AM 12.5 ft3:50 PM 11.0 ft | 11:17 AM 7.7 ft11:16 PM -1.4 ft | 13.9 ft |
| Wed, Nov 11Range 13.7 ft | 6:47 AM 12.6 ft4:11 PM 10.6 ft | 12:04 PM 8.1 ft11:52 PM -1.1 ft | 13.7 ft |
| Thu, Nov 12Range 4.1 ft | 7:32 AM 12.5 ft4:35 PM 10.2 ft | 12:53 PM 8.4 ft | 4.1 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Fri, Nov 13Range 13.0 ft | 8:19 AM 12.3 ft5:03 PM 9.7 ft | 12:29 AM -0.7 ft1:49 PM 8.5 ft | 13.0 ft |
| Sat, Nov 14Range 12.3 ft | 9:08 AM 12.2 ft5:35 PM 9.2 ft | 1:08 AM -0.1 ft2:52 PM 8.4 ft | 12.3 ft |
| Sun, Nov 15Range 11.4 ft | 9:56 AM 12.0 ft6:17 PM 8.4 ft | 1:50 AM 0.6 ft4:00 PM 8.0 ft | 11.4 ft |
| Mon, Nov 16Range 10.5 ft | 10:42 AM 11.9 ft7:22 PM 7.6 ft | 2:36 AM 1.4 ft5:06 PM 7.2 ft | 10.5 ft |
| Tue, Nov 17Range 9.6 ft | 11:23 AM 11.8 ft9:20 PM 6.9 ft | 3:27 AM 2.2 ft5:58 PM 6.2 ft | 9.6 ft |
| Wed, Nov 18Range 8.6 ft | 11:57 AM 11.8 ft | 4:24 AM 3.2 ft6:38 PM 4.8 ft | 8.6 ft |
| Thu, Nov 19Range 8.4 ft | 12:04 AM 7.2 ft12:26 PM 11.8 ft | 5:26 AM 4.1 ft7:14 PM 3.4 ft | 8.4 ft |
| Fri, Nov 20Range 10.0 ft | 1:25 AM 8.2 ft12:51 PM 11.8 ft | 6:28 AM 5.0 ft7:48 PM 1.8 ft | 10.0 ft |
| Sat, Nov 21Range 11.6 ft | 2:29 AM 9.5 ft1:15 PM 11.8 ft | 7:28 AM 5.9 ft8:24 PM 0.2 ft | 11.6 ft |
| Sun, Nov 22Range 13.2 ft | 3:24 AM 10.8 ft1:41 PM 11.9 ft | 8:26 AM 6.7 ft9:01 PM -1.3 ft | 13.2 ft |
| Mon, Nov 23Range 14.5 ft | 4:16 AM 12.0 ft2:10 PM 11.9 ft | 9:22 AM 7.5 ft9:40 PM -2.5 ft | 14.5 ft |
| Tue, Nov 24Range 16.4 ft | 5:05 AM 13.0 ft2:44 PM 12.0 ft | 10:15 AM 8.0 ft10:22 PM -3.4 ft | 16.4 ft |
| Wed, Nov 25Range 17.4 ft | 5:55 AM 13.6 ft3:21 PM 11.9 ft | 11:08 AM 8.5 ft11:05 PM -3.8 ft | 17.4 ft |
| Thu, Nov 26Range 17.4 ft | 6:46 AM 13.8 ft4:03 PM 11.6 ft | 12:02 PM 8.7 ft11:51 PM -3.6 ft | 17.4 ft |
| Fri, Nov 27Range 5.1 ft | 7:37 AM 13.8 ft4:48 PM 11.0 ft | 1:01 PM 8.7 ft | 5.1 ft |
| Sat, Nov 28Range 16.6 ft | 8:28 AM 13.6 ft5:40 PM 10.2 ft | 12:40 AM -3.0 ft2:04 PM 8.3 ft | 16.6 ft |
Conditions at Union
From the National Weather Service forecast for this spot, with today's sunrise and sunset.
Any date, past or future
Plan another date
Pick a date to see the tide curve, the highs and lows and sunrise and sunset at Union.
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About Union tides
Union is a NOAA harmonic tide station (9445478): its predictions come from the tidal constituents NOAA derived from water levels measured at this spot. Heights are in feet above MLLW (Mean Lower Low Water), the datum of US nautical charts, so they line up with charted depths.
In the next 30 days, Union has two highs and two lows on 26 days and three turns on 4 days, and the daily range runs from 4.1 to 17.4 ft. That is a mixed tide: two highs and two lows on most days, of clearly different heights.
Use the curve above to time a harbor entrance, a beach walk, fishing a moving tide or clearing a shallow bar, and remember that wind, air pressure and river flow can push the real water level above or below the prediction. The daily tidal range in the tables shows how much water moves each day: bigger ranges around the new and full moon mean stronger currents.
Frequently asked
What time is high tide in Union today?+
Today (Friday, October 30), high tide at Union is at 9:46 AM (12.7 ft), 6:46 PM (10.5 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Union today?+
Today, low tide at Union is at 1:56 AM (-2.3 ft), 3:08 PM (8.6 ft).
What tidal datum do these Union tide heights use?+
All heights are given in feet relative to MLLW (Mean Lower Low Water), the standard NOAA chart datum for US tidal waters. A tide of 0.0 ft equals the chart datum; negative tides fall below it.
How accurate are these tide predictions?+
Union is a NOAA harmonic station (9445478), so these are NOAA's harmonic predictions for this spot, which are very accurate for the astronomical tide. Real water levels can still differ with wind, air pressure and river flow, so check conditions before you get underway.
Pathr nautical charts
Explore tides on the chart
Find NOAA tide prediction stations on Pathr’s nautical chart. Select a station for today’s high and low tides, or explore another spot nearby.
Nearby tide stations
Bridge clearances near Union
Vertical clearance and drawbridge opening schedules for the bridges closest to Union. Check them against your air draft before you head out.
