NDBC Buoy 46237 buoy
NDBC Buoy 46237
NDBC Buoy 46237 is a NOAA National Data Buoy Center station tracked by Snoflo. This page pairs the buoy's wave height, water temperature, swell period, and wind observations with regional context and the local 15-day weather forecast.
Use the wave hero card above for the latest reading; scroll down for the per-metric history charts (wave height, water temperature, dominant period, mean wave direction, wind, pressure).
Daily levels at NDBC Buoy 46237
Wave height, water temperature, swell period, mean wave direction, average wave period, wind, air temperature, pressure, and dew point -- all observations the buoy reports.
WVHT
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ATMP
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WTMP
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DPD
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MWD
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APD
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Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch wind direction + speed -- onshore vs offshore wind makes or breaks a session.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
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15-day temperature & precipitation
Daily temperatures and precipitation projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges within range of NDBC 46237 -- spikes here mean freshwater plumes, sediment, and debris near the coast.
| Streamgauge | Discharge | View |
|---|---|---|
| Napa R Nr Napa Ca | 11 cfs | → |
| Copeland C A Rohnert Park Ca | 2 cfs | → |
| San Lorenzo R A Santa Cruz Ca | 29 cfs | → |
| San Lorenzo R A Big Trees Ca | 33 cfs | → |
| Nathanson C A Sonoma Ca | 0 cfs | → |
| Soquel C A Soquel Ca | 8 cfs | → |
| Laguna De Santa Rosa A Stony Pt Rd Nr Cotati Ca | 1 cfs | → |
Marine safety
- Check before you launch
- Buoy readings are a snapshot. Always cross-check with the latest NWS marine forecast, especially for offshore wind shifts and small-craft advisories.
- File a float plan
- Tell someone where you're going, when you'll be back, and what your boat / paddlecraft / surfboard looks like. The Coast Guard can dispatch resources faster when they have these details.
- Wear a PFD
- Cold-water survival times are measured in minutes -- a properly fitted PFD buys you time to be found.
- Know your skill ceiling
- Big swell with strong winds is no place to push limits. Pick conditions comfortably below your max so a mistake stays recoverable.
Track Buoy 46237 in the Snoflo app
Set push alerts when wave height or water temperature crosses a threshold (e.g. "alert me at 6+ ft / 60+°F"), and Snoflo's iOS app pushes the moment NDBC reports the crossing.
About Buoy 46237
Where does the data for Buoy 46237 come from?
Wave height, water temperature, swell period, wind, and atmospheric data come from the NOAA National Data Buoy Center (NDBC) station 46237. The 15-day weather forecast comes from the NOAA / yr.no feed Snoflo's iOS app uses.
How often is the buoy report updated?
NDBC buoys typically report continuously; Snoflo refreshes throughout the day. The latest observation timestamp is shown on the wave hero card -- look for the "Latest from..." attribution.
What's the difference between DPD and APD?
DPD (dominant wave period) is the period of the wave train carrying the most energy -- this is the swell surfers care about. APD (average wave period) is the average period across all wave trains. DPD is usually longer than APD when there's a clean groundswell.
What does MWD (degT) mean?
Mean wave direction in degrees true -- the compass bearing the dominant waves are coming from. 0° = waves out of true north, 270° = waves out of true west. Useful for matching swell direction to a coastline's exposure window.
Can I get alerts when wave height crosses a threshold?
Yes -- buoy alerts are managed in the Snoflo iOS app. Set a threshold (e.g. "alert me at 8+ ft") and you'll get a push the moment NDBC reports the crossing.