NOAA station 9440650, Washington
Greenhead Slough tide chart
Friday, October 30Pacific Daylight Time
NOAA harmonic station (NOAA’s page for this station, opens in a new tab)Falling, about 5.6 ft now
As of 9:25 AM PDT
- Next
- Low 3.5 ft at 11:46 AMin 2h 21m
- Then
- High 11.4 ft at 5:34 PMin 8h 9m
High, passed
6:02 AM
9.4 ft
- Next
Low
11:46 AM
3.5 ft
High
5:34 PM
11.4 ft
The week ahead
This week’s tides at Greenhead Slough
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 7.9 ft | 6:02 AM 9.4 ft5:34 PM 11.4 ft | 11:46 AM 3.5 ft | 7.9 ft | |
| Sat, Oct 31Range 10.9 ft | 7:00 AM 9.1 ft6:31 PM 10.6 ft | 12:30 AM -0.3 ft12:42 PM 3.8 ft | 10.9 ft | |
| Sun, Nov 1Range 9.5 ft | 7:03 AM 8.9 ft6:38 PM 9.8 ft | 1:26 AM 0.3 ft12:45 PM 4.0 ft | 9.5 ft | |
| Mon, Nov 2Range 8.2 ft | 8:09 AM 8.9 ft7:54 PM 9.1 ft | 1:24 AM 0.9 ft1:52 PM 3.9 ft | 8.2 ft | |
| Tue, Nov 3Range 7.9 ft | 9:12 AM 9.3 ft9:12 PM 8.7 ft | 2:23 AM 1.4 ft2:58 PM 3.4 ft | 7.9 ft | |
| Wed, Nov 4Range 8.0 ft | 10:09 AM 9.8 ft10:27 PM 8.7 ft | 3:19 AM 1.8 ft4:01 PM 2.7 ft | 8.0 ft | |
| Thu, Nov 5Range 8.4 ft | 10:58 AM 10.3 ft11:31 PM 8.8 ft | 4:13 AM 2.0 ft4:58 PM 1.9 ft | 8.4 ft |
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Greenhead Slough 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 7.9 ft | 6:02 AM 9.4 ft5:34 PM 11.4 ft | 11:46 AM 3.5 ft | 7.9 ft |
| Sat, Oct 31Range 10.9 ft | 7:00 AM 9.1 ft6:31 PM 10.6 ft | 12:30 AM -0.3 ft12:42 PM 3.8 ft | 10.9 ft |
| Sun, Nov 1Range 9.5 ft | 7:03 AM 8.9 ft6:38 PM 9.8 ft | 1:26 AM 0.3 ft12:45 PM 4.0 ft | 9.5 ft |
| Mon, Nov 2Range 8.2 ft | 8:09 AM 8.9 ft7:54 PM 9.1 ft | 1:24 AM 0.9 ft1:52 PM 3.9 ft | 8.2 ft |
| Tue, Nov 3Range 7.9 ft | 9:12 AM 9.3 ft9:12 PM 8.7 ft | 2:23 AM 1.4 ft2:58 PM 3.4 ft | 7.9 ft |
| Wed, Nov 4Range 8.0 ft | 10:09 AM 9.8 ft10:27 PM 8.7 ft | 3:19 AM 1.8 ft4:01 PM 2.7 ft | 8.0 ft |
| Thu, Nov 5Range 8.4 ft | 10:58 AM 10.3 ft11:31 PM 8.8 ft | 4:13 AM 2.0 ft4:58 PM 1.9 ft | 8.4 ft |
| Fri, Nov 6Range 9.8 ft | 11:40 AM 10.9 ft | 5:03 AM 2.3 ft5:49 PM 1.1 ft | 9.8 ft |
| Sat, Nov 7Range 10.8 ft | 12:23 AM 9.1 ft12:18 PM 11.3 ft | 5:50 AM 2.5 ft6:34 PM 0.5 ft | 10.8 ft |
| Sun, Nov 8Range 11.4 ft | 1:08 AM 9.3 ft12:54 PM 11.5 ft | 6:35 AM 2.7 ft7:17 PM 0.1 ft | 11.4 ft |
| Mon, Nov 9Range 11.7 ft | 1:49 AM 9.5 ft1:29 PM 11.6 ft | 7:18 AM 2.9 ft7:59 PM -0.1 ft | 11.7 ft |
| Tue, Nov 10Range 11.8 ft | 2:29 AM 9.5 ft2:04 PM 11.6 ft | 8:02 AM 3.1 ft8:41 PM -0.2 ft | 11.8 ft |
| Wed, Nov 11Range 11.4 ft | 3:09 AM 9.5 ft2:40 PM 11.4 ft | 8:45 AM 3.4 ft9:23 PM 0.0 ft | 11.4 ft |
| Thu, Nov 12Range 10.8 ft | 3:50 AM 9.3 ft3:17 PM 11.0 ft | 9:29 AM 3.7 ft10:06 PM 0.2 ft | 10.8 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Fri, Nov 13Range 9.9 ft | 4:32 AM 9.1 ft3:56 PM 10.5 ft | 10:14 AM 4.0 ft10:50 PM 0.6 ft | 9.9 ft |
| Sat, Nov 14Range 9.0 ft | 5:18 AM 8.9 ft4:38 PM 10.0 ft | 11:02 AM 4.3 ft11:36 PM 1.0 ft | 9.0 ft |
| Sun, Nov 15Range 4.9 ft | 6:06 AM 8.7 ft5:25 PM 9.4 ft | 11:54 AM 4.5 ft | 4.9 ft |
| Mon, Nov 16Range 7.4 ft | 6:58 AM 8.6 ft6:21 PM 8.8 ft | 12:26 AM 1.4 ft12:51 PM 4.6 ft | 7.4 ft |
| Tue, Nov 17Range 7.0 ft | 7:50 AM 8.8 ft7:26 PM 8.3 ft | 1:17 AM 1.8 ft1:51 PM 4.3 ft | 7.0 ft |
| Wed, Nov 18Range 7.0 ft | 8:41 AM 9.1 ft8:37 PM 8.1 ft | 2:10 AM 2.1 ft2:49 PM 3.8 ft | 7.0 ft |
| Thu, Nov 19Range 7.2 ft | 9:28 AM 9.6 ft9:47 PM 8.2 ft | 3:01 AM 2.4 ft3:45 PM 3.0 ft | 7.2 ft |
| Fri, Nov 20Range 8.2 ft | 10:14 AM 10.2 ft10:52 PM 8.5 ft | 3:52 AM 2.6 ft4:38 PM 2.0 ft | 8.2 ft |
| Sat, Nov 21Range 10.0 ft | 10:58 AM 11.0 ft11:49 PM 9.0 ft | 4:42 AM 2.8 ft5:28 PM 1.0 ft | 10.0 ft |
| Sun, Nov 22Range 11.6 ft | 11:40 AM 11.7 ft | 5:31 AM 2.9 ft6:17 PM 0.1 ft | 11.6 ft |
| Mon, Nov 23Range 13.0 ft | 12:41 AM 9.5 ft12:23 PM 12.3 ft | 6:19 AM 3.0 ft7:05 PM -0.7 ft | 13.0 ft |
| Tue, Nov 24Range 13.9 ft | 1:30 AM 9.8 ft1:06 PM 12.7 ft | 7:08 AM 3.1 ft7:53 PM -1.2 ft | 13.9 ft |
| Wed, Nov 25Range 14.3 ft | 2:19 AM 10.0 ft1:51 PM 12.8 ft | 7:56 AM 3.2 ft8:42 PM -1.5 ft | 14.3 ft |
| Thu, Nov 26Range 14.1 ft | 3:08 AM 10.1 ft2:39 PM 12.7 ft | 8:46 AM 3.2 ft9:31 PM -1.4 ft | 14.1 ft |
| Fri, Nov 27Range 13.2 ft | 3:59 AM 10.0 ft3:29 PM 12.2 ft | 9:38 AM 3.3 ft10:20 PM -1.0 ft | 13.2 ft |
| Sat, Nov 28Range 12.0 ft | 4:52 AM 9.9 ft4:23 PM 11.5 ft | 10:31 AM 3.5 ft11:10 PM -0.5 ft | 12.0 ft |
Conditions at Greenhead Slough
From the National Weather Service forecast for this spot and the nearest water temperature reading, with today's sunrise and sunset.
Any date, past or future
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About Greenhead Slough tides
Greenhead Slough is a NOAA harmonic tide station (9440650): 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, Greenhead Slough has two highs and two lows on 26 days and three turns on 4 days, and the daily range runs from 4.9 to 14.3 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.
The latest water temperature near Greenhead Slough is about 53°F, from NDBC buoy 46243, 14 mi away, at 9:00 AM PDT. Water temperature shapes where fish hold and feed, and tells you what to wear in the water, so check it alongside the tide before you head out.
Frequently asked
What time is high tide in Greenhead Slough today?+
Today (Friday, October 30), high tide at Greenhead Slough is at 6:02 AM (9.4 ft), 5:34 PM (11.4 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Greenhead Slough today?+
Today, low tide at Greenhead Slough is at 11:46 AM (3.5 ft).
What tidal datum do these Greenhead Slough 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?+
Greenhead Slough is a NOAA harmonic station (9440650), 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.
What is the water temperature at Greenhead Slough?+
The latest water temperature near Greenhead Slough is about 53°F, from NDBC buoy 46243, 14 mi away, at 9:00 AM PDT. Water temperature drives fish behavior and tells you what to wear in the water, so it's worth checking alongside the tide.
Pathr nautical charts
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Bridge clearances near Greenhead Slough
Vertical clearance and drawbridge opening schedules for the bridges closest to Greenhead Slough. Check them against your air draft before you head out.
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