Half moon bay
NDBC buoy 46012
Observed , 50 minutes ago
Hazardous
Today
Small Craft Advisory in effect. Moderate NNW winds at 16 kn gusting to 17 kn. Rough seas at 6 ft with 12 second dominant period, easing. Pressure rising at 1,020.6 mbar. Water 66°F, air 64°F. Today: NW wind 10 to 15 kt, easing to 5 to 10 kt late this morning and afternoon.
It tells you it is rough now. The app tells you before it gets rough, with alerts at the wind and wave limits you set.
Get Buoycast for iPhoneSmall Craft Advisory
Small Craft Advisory issued November 8 at 8:38AM PST until November 9 at 3:00PM PST by NWS San Francisco CA
* WHAT...Seas 11 to 14 ft. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 3 PM PST Monday. * IMPACTS...Conditions will be hazardous to small craft.
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Get Buoycast for iPhoneWind
Speed
16kn
Gust
17kn
Direction
330° NNW
Trend
Rising
Last 11 hours12 to 17 kn
Waves
5.9ft
Period
12 s
Last 11 hours5.6 to 9.2 ft
Air temp
64°F
62 to 64°F today
Water temp
66°F
66 to 67°F today
Pressure
1021mbar
Tendency
Rising
3 hour change
+0.8 mbar
Last 11 hours1020 to 1021 mbar
Zone forecast
Today
NW wind 10 to 15 kt, easing to 5 to 10 kt late this morning and afternoon. Seas 9 to 13 ft, building to 11 to 15 ft this afternoon. Wave detail: NW 14 ft at 15 seconds and S 5 ft at 17 seconds.
Tonight
NW wind around 10 kt. Seas 12 to 15 ft. Wave detail: NW 14 ft at 15 seconds and S 5 ft at 17 seconds.
Mon
NW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 10 to 13 ft, subsiding to 9 to 11 ft in the afternoon. Wave detail: NW 13 ft at 15 seconds.
Synopsis
Dynamic sea state will continue through much of the forecast period with wind and elevated swells. Moderate to fresh northerly breezes continue over the coastal waters through early next week. Rough to very rough seas will create hazardous conditions for small craft over the coastal waters. Seas begin to subside Tuesday and winds will back through the day Wednesday to become southerly.
NWS zone Waters from Point Reyes to Pigeon Point 10-60 NM
Last 24 hours
Every 3 hours, over the last 12 hours. Air 62 to 64°F, water 66 to 67°F, pressure 1,020 to 1,021 mbar over the same window.
2 stations within 30 NM
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Get Buoycast for iPhoneCommon questions
How often does buoy 46012 report?
Wind, temperature and pressure update about every 10 minutes. Wave height and period update about every 30 minutes.
Can I be notified when conditions change at buoy 46012?
Buoycast Pro lets you set your own limits on wind, waves or pressure and sends a threshold notification when this buoy crosses them.
Does this page show NOAA warnings for this area?
Watches, warnings, and advisories for Waters from Point Reyes to Pigeon Point 10-60 NM appear alongside the conditions, here and in the app. Pro also pushes NOAA watches, warnings, and advisories when they are issued.
Can I see the forecast against what buoy 46012 measured?
This page shows measurements only. Buoycast Pro charts the NOAA forecast against them so you can see where the two diverge.
Can I keep buoy 46012 for next time?
Save it as a favorite and Buoycast opens on the buoys you run.
Station 46012
37°21'22" N 122°52'52" W · 3D69 · owned and maintained by NDBC
Measured on the water by 1,000+ NOAA buoys. Observations from the National Data Buoy Center, forecasts and advisories from the National Weather Service. Not for navigation.