NOAA station 9418865, California
Mad River Slough, Arcata Bay tide chart
Saturday, October 31Pacific Daylight Time
Predicted from Humboldt Bay (North Spit) (NOAA’s page for this station, opens in a new tab)Falling, about 5.7 ft now
As of 7:17 AM PDT
- Next
- Low 3.9 ft at 10:32 AMin 3h 15m
- Then
- High 7.8 ft at 4:37 PMin 9h 20m
High, passed
6:07 AM
6.0 ft
- Next
Low
10:32 AM
3.9 ft
High
4:37 PM
7.8 ft
Low
11:50 PM
-0.6 ft
The week ahead
This week’s tides at Mad River Slough, Arcata Bay
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 |
|---|---|---|---|---|
| Sat, Oct 31Range 8.4 ft | 6:07 AM 6.0 ft4:37 PM 7.8 ft | 10:32 AM 3.9 ft11:50 PM -0.6 ft | 8.4 ft | |
| Sun, Nov 1Range 7.3 ft | 6:14 AM 6.1 ft4:52 PM 7.2 ft | 10:54 AM 3.9 ft11:54 PM -0.1 ft | 7.3 ft | |
| Mon, Nov 2Range 3.2 ft | 7:15 AM 6.4 ft6:14 PM 6.7 ft | 12:24 PM 3.5 ft | 3.2 ft | |
| Tue, Nov 3Range 6.5 ft | 8:06 AM 6.8 ft7:35 PM 6.3 ft | 12:55 AM 0.3 ft1:44 PM 2.7 ft | 6.5 ft | |
| Wed, Nov 4Range 6.6 ft | 8:49 AM 7.3 ft8:50 PM 6.2 ft | 1:52 AM 0.7 ft2:49 PM 1.8 ft | 6.6 ft | |
| Thu, Nov 5Range 6.7 ft | 9:27 AM 7.7 ft9:57 PM 6.2 ft | 2:42 AM 1.1 ft3:42 PM 1.0 ft | 6.7 ft | |
| Fri, Nov 6Range 7.9 ft | 10:02 AM 8.1 ft10:56 PM 6.2 ft | 3:27 AM 1.6 ft4:29 PM 0.2 ft | 7.9 ft |
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Mad River Slough, Arcata Bay tide table for the next 30 days
Every high and low for the next month, with the daily tidal range.
| Day | Highs | Lows | Range |
|---|---|---|---|
| Sat, Oct 31Range 8.4 ft | 6:07 AM 6.0 ft4:37 PM 7.8 ft | 10:32 AM 3.9 ft11:50 PM -0.6 ft | 8.4 ft |
| Sun, Nov 1Range 7.3 ft | 6:14 AM 6.1 ft4:52 PM 7.2 ft | 10:54 AM 3.9 ft11:54 PM -0.1 ft | 7.3 ft |
| Mon, Nov 2Range 3.2 ft | 7:15 AM 6.4 ft6:14 PM 6.7 ft | 12:24 PM 3.5 ft | 3.2 ft |
| Tue, Nov 3Range 6.5 ft | 8:06 AM 6.8 ft7:35 PM 6.3 ft | 12:55 AM 0.3 ft1:44 PM 2.7 ft | 6.5 ft |
| Wed, Nov 4Range 6.6 ft | 8:49 AM 7.3 ft8:50 PM 6.2 ft | 1:52 AM 0.7 ft2:49 PM 1.8 ft | 6.6 ft |
| Thu, Nov 5Range 6.7 ft | 9:27 AM 7.7 ft9:57 PM 6.2 ft | 2:42 AM 1.1 ft3:42 PM 1.0 ft | 6.7 ft |
| Fri, Nov 6Range 7.9 ft | 10:02 AM 8.1 ft10:56 PM 6.2 ft | 3:27 AM 1.6 ft4:29 PM 0.2 ft | 7.9 ft |
| Sat, Nov 7Range 8.6 ft | 10:34 AM 8.3 ft11:49 PM 6.3 ft | 4:08 AM 2.1 ft5:10 PM -0.3 ft | 8.6 ft |
| Sun, Nov 8Range 9.1 ft | 11:04 AM 8.4 ft | 4:47 AM 2.6 ft5:49 PM -0.7 ft | 9.1 ft |
| Mon, Nov 9Range 9.2 ft | 12:37 AM 6.3 ft11:35 AM 8.4 ft | 5:24 AM 3.1 ft6:26 PM -0.8 ft | 9.2 ft |
| Tue, Nov 10Range 9.1 ft | 1:22 AM 6.2 ft12:05 PM 8.3 ft | 6:01 AM 3.5 ft7:03 PM -0.8 ft | 9.1 ft |
| Wed, Nov 11Range 8.7 ft | 2:05 AM 6.1 ft12:37 PM 8.1 ft | 6:37 AM 3.8 ft7:41 PM -0.6 ft | 8.7 ft |
| Thu, Nov 12Range 8.2 ft | 2:49 AM 6.0 ft1:10 PM 7.8 ft | 7:14 AM 4.0 ft8:21 PM -0.4 ft | 8.2 ft |
| Fri, Nov 13Range 7.5 ft | 3:35 AM 5.9 ft1:47 PM 7.4 ft | 7:53 AM 4.2 ft9:03 PM -0.1 ft | 7.5 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Sat, Nov 14Range 6.8 ft | 4:24 AM 5.7 ft2:28 PM 7.0 ft | 8:39 AM 4.3 ft9:47 PM 0.2 ft | 6.8 ft |
| Sun, Nov 15Range 6.0 ft | 5:16 AM 5.7 ft3:17 PM 6.6 ft | 9:38 AM 4.3 ft10:35 PM 0.6 ft | 6.0 ft |
| Mon, Nov 16Range 5.2 ft | 6:07 AM 5.8 ft4:20 PM 6.1 ft | 10:52 AM 4.2 ft11:25 PM 0.9 ft | 5.2 ft |
| Tue, Nov 17Range 2.2 ft | 6:52 AM 6.1 ft5:35 PM 5.7 ft | 12:13 PM 3.9 ft | 2.2 ft |
| Wed, Nov 18Range 5.3 ft | 7:32 AM 6.5 ft6:54 PM 5.5 ft | 12:15 AM 1.2 ft1:23 PM 3.2 ft | 5.3 ft |
| Thu, Nov 19Range 5.4 ft | 8:07 AM 6.9 ft8:09 PM 5.5 ft | 1:04 AM 1.5 ft2:21 PM 2.3 ft | 5.4 ft |
| Fri, Nov 20Range 6.1 ft | 8:41 AM 7.5 ft9:19 PM 5.6 ft | 1:51 AM 1.9 ft3:10 PM 1.4 ft | 6.1 ft |
| Sat, Nov 21Range 7.7 ft | 9:14 AM 8.1 ft10:23 PM 5.9 ft | 2:37 AM 2.2 ft3:55 PM 0.4 ft | 7.7 ft |
| Sun, Nov 22Range 9.2 ft | 9:49 AM 8.6 ft11:21 PM 6.1 ft | 3:22 AM 2.6 ft4:40 PM -0.6 ft | 9.2 ft |
| Mon, Nov 23Range 10.4 ft | 10:27 AM 9.1 ft | 4:07 AM 3.0 ft5:24 PM -1.3 ft | 10.4 ft |
| Tue, Nov 24Range 11.3 ft | 12:16 AM 6.4 ft11:08 AM 9.4 ft | 4:53 AM 3.2 ft6:10 PM -1.9 ft | 11.3 ft |
| Wed, Nov 25Range 11.7 ft | 1:09 AM 6.5 ft11:52 AM 9.6 ft | 5:40 AM 3.4 ft6:57 PM -2.1 ft | 11.7 ft |
| Thu, Nov 26Range 11.5 ft | 2:02 AM 6.5 ft12:39 PM 9.5 ft | 6:30 AM 3.6 ft7:46 PM -2.0 ft | 11.5 ft |
| Fri, Nov 27Range 10.8 ft | 2:55 AM 6.5 ft1:31 PM 9.1 ft | 7:24 AM 3.6 ft8:37 PM -1.7 ft | 10.8 ft |
| Sat, Nov 28Range 9.7 ft | 3:49 AM 6.5 ft2:27 PM 8.5 ft | 8:24 AM 3.7 ft9:29 PM -1.2 ft | 9.7 ft |
| Sun, Nov 29Range 8.3 ft | 4:44 AM 6.6 ft3:29 PM 7.7 ft | 9:32 AM 3.6 ft10:22 PM -0.6 ft | 8.3 ft |
Conditions at Mad River Slough, Arcata Bay
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 Mad River Slough, Arcata Bay tides
Mad River Slough, Arcata Bay is a NOAA subordinate station (9418865): NOAA predicts its times and heights from Humboldt Bay (North Spit) (9418767) with offsets for this spot, so treat them as a close guide rather than an exact prediction. 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, Mad River Slough, Arcata Bay has two highs and two lows on 26 days and three turns on 4 days, and the daily range runs from 2.2 to 11.7 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 Mad River Slough, Arcata Bay is about 55°F, from NDBC station HBXC1, 7 mi away, at 6:45 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 Mad River Slough, Arcata Bay today?+
Today (Saturday, October 31), high tide at Mad River Slough, Arcata Bay is at 6:07 AM (6.0 ft), 4:37 PM (7.8 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Mad River Slough, Arcata Bay today?+
Today, low tide at Mad River Slough, Arcata Bay is at 10:32 AM (3.9 ft), 11:50 PM (-0.6 ft).
What tidal datum do these Mad River Slough, Arcata Bay 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?+
Mad River Slough, Arcata Bay is a NOAA subordinate station (9418865). NOAA predicts its times and heights from Humboldt Bay (North Spit) (9418767) with offsets for this spot, so treat them as a close guide rather than an exact prediction. Real water levels can also differ with wind, air pressure and river flow.
What is the water temperature at Mad River Slough, Arcata Bay?+
The latest water temperature near Mad River Slough, Arcata Bay is about 55°F, from NDBC station HBXC1, 7 mi away, at 6:45 AM PDT. Water temperature drives fish behavior and tells you what to wear in the water, so it's worth checking alongside the tide.
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