TARLINE

Tar Report for Glass Beach

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California coast · North Coast

Glass Beach

No Recent Reports

Tar/Oil – / 10 No Recent Reports · Unknown, Not Clean Surf 8-9 ft @ 11.2 s Estimated Breaking Height And Its Period

At A Glance

Tar

Reading the tar score Higher is cleaner. 10 means less tar reported; lower scores mean more tar or oil.Based on beach reports. Reports from the past 72 hours count, with more weight given to recent, better-supported reports. The lowest sand, water or smell score sets the overall score.A dash means unknown. No reports does not mean a clean beach.How scoring works
– / 10
No Recent Reports
Sand – no reports Water – no reports
Reports today 0
no tar reports on record

Surf

Reading the surf Height & period. Estimated breaking-wave height at this beach, followed by seconds between waves. The buoy readings below describe conditions offshore instead.Word & dots. More filled dots mean better predicted surf, based on waves and wind. Unrated means an input is missing.Before paddling out. This is an estimate, not a live surf check or a safety rating. Check conditions at the beach.How scoring works
8-9 ft @ 11.2 s
overhead
Good 4 out of 5
Offshore Swell obs 46m ago
8.2 ft Height 11.0 s Period 302° WNW From
Pt Arena Buoy. 10/20 11:20 PM
Model: Tarline Zyphyr Model v4

Temp

Air and water temperatures Air. The weather forecast for this beach.Water. A nearby buoy reading. Water at the shoreline can be warmer or colder.Units & time. Temperatures are in °F. The water reading's time is Pacific time.
Air 49.7 °F
Water 57.2 °F
Water: Pt Arena Buoy. 10/20 11:30 PM

Wind

Reading the wind Speed & gusts. Shown in knots (kt). Gusts are short bursts of stronger wind.Direction. The arrow and compass bearing show where the wind comes from.At the beach. Offshore blows toward the water; onshore blows toward land. Sideshore blows along the coast.
4.1 kt gusting 4.1 kt
119° ESE offshore
Model: Open-Meteo Weather

Tide

Reading the tides Predicted, not measured. Dots mark NOAA's predicted high and low tides for the CO-OPS station mapped to this beach, which is a different place from the sand you stand on. The line between the dots is Tarline's own interpolation.Height & time. Feet above NOAA's low-water reference, not the water depth. All times are Pacific.Explore the curve. Tap or focus a dot for its time and height.
Low tide, 2.9 ft @ 1:49 pm, Tue, Oct 20 Pacific 1:49pm High tide, 4.7 ft @ 7:15 pm, Tue, Oct 20 Pacific 7:15pm Low tide, 0.9 ft @ 2:03 am, Wed, Oct 21 Pacific 2:03am High tide, 4.9 ft @ 8:48 am, Wed, Oct 21 Pacific 8:48am Low tide, 2.4 ft @ 2:36 pm, Wed, Oct 21 Pacific 2:36pm High tide, 4.8 ft @ 8:16 pm, Wed, Oct 21 Pacific 8:16pm Low tide, 1.0 ft @ 2:40 am, Thu, Oct 22 Pacific 2:40am High tide, 5.3 ft @ 9:12 am, Thu, Oct 22 Pacific 9:12am 5.3 0.9 Tue 1 PM now Thu 9 AM
Plotted Window, Pacific Time
5.3 ft @ 9:12 am Highest · Thu, Oct 22 0.9 ft @ 2:03 am Lowest · Wed, Oct 21
NOAA 9416841 · predicted tides

As Of 10/21/26 12am Forecast About this forecast time The forecast hour. This is the hour the weather forecast describes, not when it was downloaded.Other readings. Buoy readings and tar reports have their own times on the cards. Tides are predictions.Every source and time. Open Sources & timestamps below for each feed's observation, forecast and retrieval times in full.

Sources & timestamps6 sources

  • Surf estimateTarline multi-buoy spectral model (buoy-spectrum-shadow-3)

    buoys 46014, 46213, 46013, 46026

    Observed
    when the instrument took this reading
    Calculated
    the recorded time of the local calculation

    Estimated from measured directional spectra, screened by this beach's exposure. The calculation time is when the model last ran. The observation time is the newest spectrum considered; other inputs may be older. This is not observed breaking surf or an independently calibrated accuracy claim.

  • Offshore swellNDBC, NOAA

    Pt Arena (46014)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading of open water, selected independently of the water temperature station. The observation time is the oldest of the wave fields shown, so it can overstate a single field's age but never understate it. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

  • Water temperatureNDBC, NOAA

    Pt Arena (46014)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading, selected independently of the wave station. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

  • WeatherOpen-Meteo Forecast API

    Requested at 39.4516, -123.8138

    Valid for
    the time this forecast or prediction describes, not when it was made
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Modeled hourly weather for this beach's coordinates, not a reading from an instrument at the beach. The upstream model issue time was not recorded with these data, so issuance is unknown.

    Open the Open-Meteo Forecast API source ↗

  • TideCO-OPS, NOAA

    Arena Cove tide (9416841)

    Valid for
    the time this forecast or prediction describes, not when it was made
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Harmonic high and low predictions on the MLLW datum, not an observed water level. The time shown is the predicted extreme itself.

    Open the CO-OPS, NOAA source ↗

  • Sun and moonSunCalc, calculated locally

    39.4516, -123.8138

    Calculated
    the recorded time of the local calculation

    SunCalc computes sun and moon rise/set times from the Pacific date and beach coordinates, assuming an unobstructed horizon. Moon phase depends on date and time, not the beach location. No feed or beach sensor is involved; terrain and atmospheric conditions affect visible rise/set times.

    Open the SunCalc, calculated locally source ↗

All times are Pacific. An upstream issue time is shown only when recorded. A feed response time is not the provider's model initialization or publication time. Unlisted timestamps were not recorded or do not apply.

Surf OutlookBreaking-face estimates and forecast → Weather OutlookHourly conditions and the week ahead → Tar & OilScores and recent evidence →

Find This Beach

© OpenStreetMap contributors© OpenMapTilesTerrain: AWS Open Data

Glass Beach

Beach forecast · offshore context

Surf Outlook

Estimated breaking-face height at the beach is separate from offshore buoy wave height. These estimates are not validated measurements.

Surf Forecast

Morning and evening estimates, with swell and wind context.

Day Time of day Rating Size Surf Offshore swell Wind Weather Surf basis
WED OCT 21
Wed, 10/21 Morning 6 ft or more 6-7 ft @ 7.8 s · overhead 5-6 ft @ 10.2 s 2kt sideshore Overcast · 54.7°F Exposure estimate
Wed, 10/21 Evening 4 to under 6 ft 5-6 ft @ 7.2 s · overhead 5-6 ft @ 10.2 s 3.5kt onshore Overcast · 62.1°F Exposure estimate
THU OCT 22
Thu, 10/22 Morning 4 to under 6 ft 4-5 ft @ 6.7 s · chest-to-head 4-5 ft @ 9.8 s 1.2kt sideshore Overcast · 57.6°F Exposure estimate
Thu, 10/22 Evening 4 to under 6 ft 5-6 ft @ 6.2 s · overhead 5-6 ft @ 9.0 s 7.3kt onshore Overcast · 55.1°F Exposure estimate
FRI OCT 23
Fri, 10/23 Morning 6 ft or more 8-9 ft @ 7.1 s · overhead 7-8 ft @ 8.7 s 9.6kt sideshore Clear · 53.5°F Exposure estimate
Fri, 10/23 Evening 6 ft or more 8-9 ft @ 7.3 s · overhead 8-9 ft @ 8.7 s 16.7kt sideshore Clear · 55.5°F Exposure estimate
SAT OCT 24
Sat, 10/24 Morning 6 ft or more 6-7 ft @ 6.6 s · overhead 6-7 ft @ 8.9 s 1.3kt offshore Clear · 55°F Exposure estimate
Sat, 10/24 Evening 6 ft or more 6-7 ft @ 6.8 s · overhead 5-6 ft @ 9.1 s 1.3kt onshore Clear · 55.4°F Exposure estimate
SUN OCT 25
Sun, 10/25 Morning 4 to under 6 ft 4-5 ft @ 6.3 s · chest-to-head 3-4 ft @ 9.6 s 4kt sideshore Overcast · 55.9°F Exposure estimate
Sun, 10/25 Evening 2 to under 4 ft 3-4 ft @ 5.9 s · chest-to-head 3-4 ft @ 10.2 s 1.5kt onshore Overcast · 56.8°F Exposure estimate
MON OCT 26
Mon, 10/26 Morning 2 to under 4 ft 2-3 ft @ 9 s · waist-high 3-4 ft @ 11.8 s 2.8kt sideshore Partly cloudy · 55.9°F Exposure estimate
Mon, 10/26 Evening 2 to under 4 ft 2-3 ft @ 8.6 s · waist-high 3-4 ft @ 11.5 s 2.8kt onshore Overcast · 57.4°F Exposure estimate
TUE OCT 27
Tue, 10/27 Morning 2 to under 4 ft 2-3 ft @ 6.9 s · waist-high 3-4 ft @ 11.7 s 3.1kt offshore Mostly cloudy · 55.2°F Exposure estimate
Tue, 10/27 Evening 2 to under 4 ft 2-3 ft @ 9.1 s · waist-high 3-4 ft @ 12.0 s 2.5kt onshore Overcast · 56.6°F Exposure estimate
WED OCT 28
Wed, 10/28 Morning 4 to under 6 ft 4-5 ft @ 12.5 s · chest-to-head 4-5 ft @ 12.6 s 1.4kt offshore Overcast · 56.3°F Exposure estimate
Wed, 10/28 Evening 4 to under 6 ft 5-6 ft @ 11.9 s · overhead 4-5 ft @ 12.6 s 4.4kt sideshore Overcast · 57.7°F Exposure estimate
THU OCT 29
Thu, 10/29 Morning 4 to under 6 ft 5-6 ft @ 10.9 s · chest-to-head 4-5 ft @ 11.4 s 7kt sideshore Overcast · 59°F Exposure estimate
Thu, 10/29 Evening 4 to under 6 ft 4-5 ft @ 10.6 s · chest-to-head 4-5 ft @ 11.2 s 3.4kt sideshore Overcast · 58.2°F Exposure estimate
Surf is an unvalidated breaking-wave estimate; offshore wave height is not surf height. Each height carries the period of its own source: the Surf period comes from the sample the breaking estimate was computed from, the Offshore swell period from the wave model's own row. A period shown as – is one the source did not supply. No calibrated accuracy percentage is available. Wind is the atmospheric weather forecast, not wind-wave direction.
Forecast sources & timestamps3 sources

  • Surf estimateTarline exposure window model on Open-Meteo Marine

    request coordinates 39.45,-123.81

    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Computed here from the modeled offshore swell and wind sea for this beach's hour, screened by the beach's exposure windows. Modeled throughout, with no measurement at the beach. The upstream model issue time was not recorded with these data, so issuance is unknown. Rows in this table are valid for different forecast hours, so no single valid time is shown here; read the row's own Day and Time of day.

    Open the Tarline exposure window model on Open-Meteo Marine source ↗

  • Wave forecastOpen-Meteo Marine API

    request coordinates 39.45,-123.81

    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Modeled open-water wave forecast requested at rounded coordinates, not a beach measurement. These coordinates identify Tarline's request, not necessarily the provider's returned model cell. The upstream model issue time was not recorded with these data, so issuance is unknown. Rows in this table are valid for different forecast hours, so no single valid time is shown here; read the row's own Day and Time of day.

    Open the Open-Meteo Marine API source ↗

  • WeatherOpen-Meteo Forecast API

    Requested at 39.4516, -123.8138

    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Modeled hourly weather for this beach's coordinates, not a reading from an instrument at the beach. The upstream model issue time was not recorded with these data, so issuance is unknown. Rows in this table are valid for different forecast hours, so no single valid time is shown here; read the row's own Day and Time of day.

    Open the Open-Meteo Forecast API source ↗

All times are Pacific. An upstream issue time is shown only when recorded. A feed response time is not the provider's model initialization or publication time. Unlisted timestamps were not recorded or do not apply.

Breaking surf and offshore swellOffshore buoy: San Francisco · NDBC 46026
Offshore buoy, latest measurementno observed readingNext estimated breaking face6-7 ft @ 7.8 s · Wed, Oct 21, 9:00 AM
Estimated Breaking Face, Not Offshore Wave Height

No exact beach-reported face heights in the latest reports. Hovering an estimated-face point states the period of the sample that height was modeled from. The report form does not collect a wave period, so a crowd report's height says the period was not reported rather than borrowing the forecast's.

NESW
Swell from
287° WNW forecast
Offshore height
unknown observed and forecast span 3.4 to 8.2 ft
Dominant period
unknown
Beach faces
270° W dashed on compass
Offshore Wave Height, Observed And Forecast
Dominant Period, Observed And Forecast

Solid left of NOW: buoy measurements. Dashed right of NOW: wave-model forecast. Offshore significant wave height, not breaking face.

Swell Direction, Every 6h
Arrows point the way the swell is heading; the reading is the bearing it comes from, 0° = north. No direction reported in 43 of 57 samples.

Community evidence

Tar & Oil Conditions

Scores summarize recent beach reports, not a water-quality test. No reports means unknown, not clean.

Tar/Oil Score, 0 To 10 (10 = Clean)
7 DAYSHow scoring works →
no data
No tar/oil scores on record for the last 7 days.

Nothing to plot: no field reports have been scored for this beach in this window. An empty 0-10 lane would look the same as a clean beach, so none is drawn.

Read the individual tar/oil observations behind these scores, or use Research to compare and export historical records.

What people actually saw

Tar & Oil Observations

Up to 20 recent reports at this beach. These are crowd reports, not live instruments.

No reports yet for this beach.

Looking further back? Explore and export historical observations in Research →

Today · the week ahead

Weather Outlook

Hourly temperature, wind and sky forecasts, with daylight and lunar context.

Weather
50°Fovercast4 ktESEgust 4 ktUV 0Humidity 83%1011 mbSunrise 7:31 AMSunset 6:27 PM
Today, Hour By Hour
Sky By Hour
Wind Direction, Hourly
Arrows point the way the wind is heading; the reading is the bearing it comes from, 0° = north.
TodayUV 4 ModerateSunrise 7:31 AMSunset 6:27 PMMoonrise 4:12 PMMoonset 2:37 AM Waxing Gibbousapprox. next full moon Oct 27
Weather sources & timestamps3 sources

  • WeatherOpen-Meteo Forecast API

    Requested at 39.4516, -123.8138

    Valid for
    the time this forecast or prediction describes, not when it was made
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Modeled hourly weather for this beach's coordinates, not a reading from an instrument at the beach. The upstream model issue time was not recorded with these data, so issuance is unknown.

    Open the Open-Meteo Forecast API source ↗

  • Water temperatureNDBC, NOAA

    Pt Arena (46014)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading, selected independently of the wave station. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

  • Sun and moonSunCalc, calculated locally

    39.4516, -123.8138

    Calculated
    the recorded time of the local calculation

    SunCalc computes sun and moon rise/set times from the Pacific date and beach coordinates, assuming an unobstructed horizon. Moon phase depends on date and time, not the beach location. No feed or beach sensor is involved; terrain and atmospheric conditions affect visible rise/set times. Sunrise, sunset, moonrise, moonset and phase are calculated per Pacific calendar day for 7 days from this one.

    Open the SunCalc, calculated locally source ↗

All times are Pacific. An upstream issue time is shown only when recorded. A feed response time is not the provider's model initialization or publication time. Unlisted timestamps were not recorded or do not apply.

Water reference: Pt Arena · 46014 . Latest prior accepted buoy measurement at each hour, at most three hours old—not a shoreline thermometer or a water-temperature forecast.

Air and wind: Open-Meteo forecasts, not beach instruments. Coastal terrain and the marine layer can differ from the model grid. Compare the official NWS point forecast →

Instrument observations

Nearby Buoys

Nearby stations and configured reference sites with current usable readings. Measurements describe conditions at the instrument, not breaking surf on this beach. The map includes the wider station catalog.

San Francisco

NDBC 46026
Reporting

Moored buoy · 207.3 km from this beach · 53 m depth

last observation Oct 20, 2026, 11:20 PM

Significant wave height
5.9 ft observed Oct 20, 2026, 11:20 PM · NDBC 46026
Dominant period
14.0 s observed Oct 20, 2026, 11:20 PM · NDBC 46026
Average period
8.6 s observed Oct 20, 2026, 11:20 PM · NDBC 46026
Mean wave direction
W 275° observed Oct 20, 2026, 11:20 PM · NDBC 46026
Water temperature
60.1 °F observed Oct 20, 2026, 11:10 PM · NDBC 46026
Wind
5.8 kt observed Oct 20, 2026, 11:20 PM · NDBC 46026
Gust
9.7 kt observed Oct 20, 2026, 11:20 PM · NDBC 46026
Wind direction
NNW 330° observed Oct 20, 2026, 11:20 PM · NDBC 46026
Air temperature
– °F not in the latest transmission

Significant wave height is the total measured sea state at this mooring, not the height breaking at this beach. The modeled breaking estimate is on the Surf tab.

No accepted directional spectrum from the past 90 minutes is available, so no partitions are shown.

Station sources & timestamps3 sources

  • Latest station reportNDBC, NOAA

    San Francisco (46026)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Latest report received from this physical station; individual fields can have older observation times. This is the recorded start of the most recent successful live poll across this station's products, not response completion or proof that every field refreshed.

    Open the NDBC, NOAA source ↗

  • Offshore swellNDBC, NOAA

    San Francisco (46026)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading of open water, selected independently of the water temperature station. The observation time is the oldest of the wave fields shown, so it can overstate a single field's age but never understate it. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

  • Water temperatureNDBC, NOAA

    San Francisco (46026)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading, selected independently of the wave station. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

All times are Pacific. An upstream issue time is shown only when recorded. A feed response time is not the provider's model initialization or publication time. Unlisted timestamps were not recorded or do not apply.

Station history → View on NDBC →

Pt Arena

NDBC 46014
Reporting

Moored buoy · 29 km from this beach · 335 m depth

last observation Oct 20, 2026, 11:30 PM

Significant wave height
8.2 ft observed Oct 20, 2026, 11:20 PM · NDBC 46014
Dominant period
11.0 s observed Oct 20, 2026, 11:20 PM · NDBC 46014
Average period
9.0 s observed Oct 20, 2026, 11:20 PM · NDBC 46014
Mean wave direction
WNW 302° observed Oct 20, 2026, 11:20 PM · NDBC 46014
Water temperature
57.2 °F observed Oct 20, 2026, 11:30 PM · NDBC 46014
Wind
5.8 kt observed Oct 20, 2026, 11:30 PM · NDBC 46014
Gust
5.8 kt observed Oct 20, 2026, 11:30 PM · NDBC 46014
Wind direction
N 350° observed Oct 20, 2026, 11:30 PM · NDBC 46014
Air temperature
– °F not in the latest transmission

Significant wave height is the total measured sea state at this mooring, not the height breaking at this beach. The modeled breaking estimate is on the Surf tab.

No accepted directional spectrum from the past 90 minutes is available, so no partitions are shown.

Station sources & timestamps3 sources

  • Latest station reportNDBC, NOAA

    Pt Arena (46014)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Latest report received from this physical station; individual fields can have older observation times. This is the recorded start of the most recent successful live poll across this station's products, not response completion or proof that every field refreshed.

    Open the NDBC, NOAA source ↗

  • Offshore swellNDBC, NOAA

    Pt Arena (46014)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading of open water, selected independently of the water temperature station. The observation time is the oldest of the wave fields shown, so it can overstate a single field's age but never understate it. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

  • Water temperatureNDBC, NOAA

    Pt Arena (46014)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading, selected independently of the wave station. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

All times are Pacific. An upstream issue time is shown only when recorded. A feed response time is not the provider's model initialization or publication time. Unlisted timestamps were not recorded or do not apply.

Station history → View on NDBC →

Cape Mendocino

NDBC 46213 · CDIP 094
Reporting

Moored buoy · 122.8 km from this beach · 346 m depth

last observation Oct 20, 2026, 11:35 PM

Significant wave height
7.8 ft observed Oct 20, 2026, 11:00 PM · CDIP 094
Dominant period
11.1 s observed Oct 20, 2026, 11:00 PM · CDIP 094
Average period
8.4 s observed Oct 20, 2026, 11:00 PM · CDIP 094
Mean wave direction
WNW 295° observed Oct 20, 2026, 11:00 PM · CDIP 094
Water temperature
56.0 °F observed Oct 20, 2026, 11:35 PM · CDIP 094
Wind
– kt not in the latest transmission
Gust
– kt not in the latest transmission
Wind direction
– not in the latest transmission
Air temperature
55.2 °F observed Oct 20, 2026, 11:30 PM · NDBC 46213

Significant wave height is the total measured sea state at this mooring, not the height breaking at this beach. The modeled breaking estimate is on the Surf tab.

Partitions, computed here Where these partitions come from Tarline splits this station's own directional wave spectrum into a swell part and a wind sea part. The split is this site's computation, not a provider product, and it is deliberately conservative: two parts, not a list of named swell trains. Variances add and heights do not, so the combined figure below is 4 times the square root of the total variance rather than a sum of the partition heights.
  • Wind sea 7.8 ft @ 11.1s energy period 10.1 s from WNW 293°

Partitions combine to 7.8 ft significant height , against 7.8 ft measured at the station. Spectrum sampled Oct 20, 11:00 PM.

Station sources & timestamps4 sources

  • Latest station reportNDBC, NOAA

    Cape Mendocino (46213)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Latest report received from this physical station; individual fields can have older observation times. This is the recorded start of the most recent successful live poll across this station's products, not response completion or proof that every field refreshed.

    Open the NDBC, NOAA source ↗

  • Offshore swellCDIP, Scripps Institution of Oceanography

    Cape Mendocino (46213)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading of open water, selected independently of the water temperature station. The observation time is the oldest of the wave fields shown, so it can overstate a single field's age but never understate it. Read through CDIP, Scripps Institution of Oceanography as 094. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the CDIP, Scripps Institution of Oceanography source ↗

  • Water temperatureCDIP, Scripps Institution of Oceanography

    Cape Mendocino (46213)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading, selected independently of the wave station. Read through CDIP, Scripps Institution of Oceanography as 094. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the CDIP, Scripps Institution of Oceanography source ↗

  • Directional wave spectrumCDIP, Scripps Institution of Oceanography

    Cape Mendocino (46213)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Wave systems are partitioned from this measured spectrum. The fetch timestamp records the start of a successful poll of this provider's spectral product, not response completion. Spectra are retained for 72 hours.

    Open the CDIP, Scripps Institution of Oceanography source ↗

All times are Pacific. An upstream issue time is shown only when recorded. A feed response time is not the provider's model initialization or publication time. Unlisted timestamps were not recorded or do not apply.

Station history → View on NDBC →

Bodega Bay

NDBC 46013
Reporting

Moored buoy · 142 km from this beach · 128 m depth

last observation Oct 20, 2026, 11:10 PM

Significant wave height
6.2 ft observed Oct 20, 2026, 11:10 PM · NDBC 46013
Dominant period
12.0 s observed Oct 20, 2026, 10:50 PM · NDBC 46013
Average period
8.4 s observed Oct 20, 2026, 11:10 PM · NDBC 46013
Mean wave direction
WNW 291° observed Oct 20, 2026, 11:10 PM · NDBC 46013
Water temperature
– °F not in the latest transmission
Wind
3.9 kt observed Oct 20, 2026, 11:10 PM · NDBC 46013
Gust
5.8 kt observed Oct 20, 2026, 11:10 PM · NDBC 46013
Wind direction
NNW 340° observed Oct 20, 2026, 11:10 PM · NDBC 46013
Air temperature
59.7 °F observed Oct 20, 2026, 11:10 PM · NDBC 46013

Significant wave height is the total measured sea state at this mooring, not the height breaking at this beach. The modeled breaking estimate is on the Surf tab.

No accepted directional spectrum from the past 90 minutes is available, so no partitions are shown.

Station sources & timestamps3 sources

  • Latest station reportNDBC, NOAA

    Bodega Bay (46013)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    Latest report received from this physical station; individual fields can have older observation times. This is the recorded start of the most recent successful live poll across this station's products, not response completion or proof that every field refreshed.

    Open the NDBC, NOAA source ↗

  • Offshore swellNDBC, NOAA

    Bodega Bay (46013)

    Observed
    when the instrument took this reading
    Successful fetch
    recorded time for the last accepted fetch; not proof the value changed (see source timing details below)

    One instrument's own reading of open water, selected independently of the water temperature station. The observation time is the oldest of the wave fields shown, so it can overstate a single field's age but never understate it. The fetch timestamp records the start of a successful poll of this field's provider and product, not response completion or the age of the reading.

    Open the NDBC, NOAA source ↗

  • Water temperatureNDBC, NOAA

    Bodega Bay (46013)

    No source time available. This entry carries no observation, valid, issue, calculation or retrieval time, so its age is unknown.

    One instrument's own reading, selected independently of the wave station. No accepted reading from this station is on record for the window shown. A successful fetch time for this field's provider and product is unavailable.

    Open the NDBC, NOAA source ↗

All times are Pacific. An upstream issue time is shown only when recorded. A feed response time is not the provider's model initialization or publication time. Unlisted timestamps were not recorded or do not apply.

Station history → View on NDBC →
Primary model

Multi-buoy surf model, this beach's estimate

What the multi-buoy model is The surf figure on this page is computed from several buoys' directional wave spectra, with the land between each buoy and this beach screened out. It is a model ESTIMATE and it has not been calibrated against measured breaking surf, so no accuracy figure is claimed for it. The baseline beside it is the height the older exposure/CDIP tier produced at the same run, kept so the change stays auditable. A difference between the two is two models disagreeing, not either one being right.
Multi-buoy model, this beach's estimate 8.7 ft
Legacy baseline, same run 8.3 ft window-model
Difference from the baseline +0.4 ft this beach's estimate minus the older tier at that run

Stations used: Pt Arena, Cape Mendocino, Bodega Bay, San Francisco

  • exposure: curated arcs at every frequency; bins at or above 0.09 Hz are UNSCREENED (no coastline geometry supplied)

Computed Oct 21, 12:03 AM · buoy-spectrum-shadow-3

Panel assembled Wed, Oct 21, 2026, 12:06 AM PDT. That is not how fresh any station reading is.

Public incident records

Nearby Incident Reports

Records within 25 km. Proximity alone does not establish the source of tar at this beach.

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Last 90 days 0

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