Mad River Slough tide times

Arcata Bay, CAArcata BayNOAA 9418865Monday, October 12 · PDTMon Oct 12Predictions onlyChange station
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Today at Mad River Slough the next low tide is at 8:24 PM (−0.4 ft). Tomorrow's first low is at 8:05 AM.

Estimated now
8.1 ft ↓
Falling 0.2 ft per hour
Next low
8:24 PM
In 6 h 27 min · −0.4 ft
Next high
3:08 AM
In 13 h 11 min · 6.3 ft
Tide range today
8.6 ft
Mean range 5.6 ft
Predictions only. No live gauge at this station.

Today's tide

Estimated curve between high and low timesNightHeight above MLLW
−2 ft0 ft2 ft4 ft6 ft8 ftNOW 1:572:21 AMHigh · 6.6 ft7:31 AMLow · 2.4 ft1:44 PMHigh · 8.1 ft8:24 PMLow · −0.4 ft
Tide chart for Mad River Slough, today. High 6.6 ft at 2:21 AM, low 2.4 ft at 7:31 AM, high 8.1 ft at 1:44 PM, low −0.4 ft at 8:24 PM.

Heights and times are estimated from North Spit, Humboldt Bay using NOAA offsets. Only the high and low points are official; the curve between them is drawn by us.

Today's tides

ft above MLLW
  • High2:21 AM6.6 ft
  • Low7:31 AM2.4 ft
  • High1:44 PM8.1 ft
  • Low8:24 PM−0.4 ft
Tide times for Mad River Slough
TideTimeHeight
High2:21 AM6.6 ft
Low7:31 AM2.4 ft
High1:44 PM8.1 ft
Low8:24 PM−0.4 ft
Sunrise
7:25 AM
First light 6:58
Sunset
6:42 PM
Last light 7:10
Moon
5%
Waxing crescent
Tide range
8.6 ft
Mean 5.6 ft

Best windows today

Plan the week →
  • Fishing
    6:00 to 8:00 PM

    Moving water near sunset, as the tide falls toward the 8:24 PM low. Second window 6:00 to 7:00 AM.

  • Tidepools & shelling
    6:00 to 7:00 PM

    Today's lowest water is at 8:24 PM, before sunrise or after sunset. Best daylight window is 6:00 to 7:00 PM.

  • Surfing
    Next: Tue 8:00 to 11:00 AM
    Earlier today: 8:00 to 11:00 AM

    Today's best window (8:00 to 11:00 AM) has passed.

  • Shallow boat launch
    Avoid 6:00 to 11:00 PM

    Under 1.5 ft around low water. Launch before 6:00 PM.

Plan the week

Moving water around the turn often fishes best. Local species and bait matter more than any chart.

Next 7 days

October calendar →
High and low tides for the next 7 days, heights in ft
DayTide 1Tide 2Tide 3Tide 4Range, ft
TodayMon 12H2:21a6.6L7:31a2.4H1:44p8.1L8:24p−0.48.6 spring tide
TueOct 13H3:08a6.3L8:05a3.0H2:14p8.0L9:04p−0.38.3 spring tide
WedOct 14H3:56a6.0L8:40a3.5H2:45p7.7L9:46p0.07.7 spring tide
ThuOct 15H4:48a5.7L9:16a3.9H3:20p7.3L10:33p0.37.0
FriOct 16H5:47a5.4L9:59a4.2H4:02p6.9L11:26p0.66.3
SatOct 17H6:55a5.3L10:59a4.4H4:57p6.52.2
SunOct 18L12:25a0.9H8:04a5.4L12:24p4.4H6:08p6.25.3

Spring tides Monday to Wednesday. Lows drop to −0.4 ft, the best shelling days this week. Spring and neap tides

Tide predictions and observations: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services (CO-OPS), station 9418865.

Nearby stations

Currents

North Bay Channel at Samoa Channel

  • Slack1:59 AM
  • Max ebb4:19 AM 1.2 kn
  • Slack6:57 AM
  • Max flood11:07 AM 1.6 kn
  • Slack1:41 PM
  • Max ebb4:27 PM 2.1 kn
  • Slack8:09 PM

Current predictions for North Bay Channel at Samoa Channel, 5 mi away. Currents near inlets can be strong. Not for navigation.

Station details

Datum
Mean lower low water
Predictions
NOAA subordinate, from North Spit, Humboldt Bay
Live gauge
None
Coordinates
40.865° N, 124.148° W
Time zone
Pacific, UTC−7
Station ID
NOAA 9418865

About the tides at Mad River Slough

Mad River Slough has a mixed tide. The two daily highs, and especially the two lows, can differ a lot in height. The pattern follows the reference station at North Spit, Humboldt Bay. With a mean range of about 5.6 ft, the shoreline here changes a lot between high and low water. That is larger than most California stations on this site. From the average lower low to the average higher high, the difference is 7.6 ft. Looking a year ahead, predictions peak at 9.9 ft on December 24 and bottom out at −2.4 ft on June 6.

Tides here are worked out from the reference station at North Spit, Humboldt Bay, with NOAA time and height corrections. Times are good for planning, but local wind can shift them. NOAA measured the tide here from 1977 to 1980 to set up these predictions. The nearest other station is Arcata Wharf, 2 mi away, where high tide comes about 5 min later. For tidal currents, see North Bay Channel at Samoa Channel.

Predictions are based on North Spit, Humboldt Bay.

Height unitsftmAdd this tide widget to your site. It's free.Week plannerPrintable October calendar

Tide predictions and water levels from NOAA CO-OPS. For planning only, not for navigation. Real water levels can differ because of wind, air pressure and river flow. Always check conditions on site.