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Black Sands Beach, California

Beach in Marin County, California

Air quality

The air at Black Sands Beach

Index 39, good, led by fine particles. Read at 9 PM from its reporting area, San Francisco (CA), 7 miles off.

39Good
  • Fine particles (PM2.5)39Good7.2 mi
  • Ozone26Good24 ppb7.2 mi
  • Nitrogen dioxide12Good13 ppb7.2 mi
  • Sulfur dioxide0Good0.9 ppb11.9 mi
  • Carbon monoxide-0.5 ppm7.2 mi

The days ahead

Highest moderate, Sat Oct 17, led by fine particles. Yesterday measured 43, good.

Smoke, the next 45 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Black Sands Beach

None in the last 3 days, to Thu 8 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Black Sands Beach, the next 45 hours

Visibility stays 6 miles or more through Sat 5 PM, lowest 7 miles Sat 1 AM.

FriSat
Black Sands Beach from its sand, nowLooking SSW from the sand at 9:31 PM, the moon 26 percent lit over the water, clear, waves about 5.5 ft every 15 s.190200210220SW230Facing SSW 210°Moon 23° rightWind 4 mphfrom WNW, along the beachSwell 5.5 ft from WSWLongshore current, to the left
Looking SSW from the sand at 9:31 PM, the moon 26 percent lit over the water, clear, waves about 5.5 ft every 15 s.
NESW

Facing SSW 210°

300 ft

From above: the edge, the break, the view

Surf and swim

The surf zone forecast for Sonoma and Marin County Coastal Areas, and the waves at buoy 46026, 18.8 mi away.

Friday

Surf height
4 to 7 feet
Water temperature
-

Waves at buoy 46026, San Francisco

Wave height
4.3 ft
Period
15 s
From
WSW (241°)
Swell
3.9 ft at 15 s from WSW
Wind waves
1.0 ft at 3 s from WNW
Water
61 °F
Read
Thu 8:50 PM
Distance
18.8 mi

Wave height is the significant height: the mean of the highest third of the waves. The period is the time between the waves carrying the most energy.

Wave height at buoy 46026, last 48 hoursSignificant wave height from 3.6 ft to 5.6 ft; 4.3 ft at Thu 8:50 PM. Arrows show the way the waves travel.0 ft2 ft4 ft6 ft8 ftWed6 AMNoon6 PMThu6 AMNoon6 PM4.3 ftWave height at buoy 46026, last 48 hoursSignificant wave height from 3.6 ft to 5.6 ft; 4.3 ft at Thu 8:50 PM. Arrows show the way the waves travel.0 ft2 ft4 ft6 ft8 ftWedNoonThuNoon4.3 ft
Significant wave height from 3.6 ft to 5.6 ft; 4.3 ft at Thu 8:50 PM. Arrows show the way the waves travel.
Every hour, last 24 hours
TimeWave heightPeriodFrom
Thu 8:50 PM4.3 ft15 sWSW (241°)
Thu 7:50 PM3.6 ft13 sW (260°)
Thu 6:50 PM3.9 ft14 sSW (228°)
Thu 5:50 PM3.9 ft14 sWSW (248°)
Thu 4:50 PM3.9 ft15 sWSW (239°)
Thu 3:50 PM4.3 ft15 sWSW (243°)
Thu 2:50 PM3.9 ft15 sSW (230°)
Thu 1:50 PM3.9 ft15 sSW (221°)
Thu 12:50 PM3.9 ft15 sWSW (256°)
Thu 11:50 AM3.9 ft15 sSW (235°)
Thu 10:50 AM4.3 ft15 sWSW (239°)
Thu 9:50 AM3.9 ft14 sW (260°)
Thu 8:50 AM4.3 ft15 sSW (233°)
Thu 7:50 AM4.6 ft-WSW (245°)
Thu 6:50 AM4.3 ft14 sW (270°)
Thu 5:50 AM3.9 ft15 sW (263°)
Thu 4:50 AM3.9 ft-W (280°)
Thu 3:50 AM4.3 ft15 sWSW (252°)
Thu 2:50 AM4.6 ft14 sW (274°)
Thu 1:50 AM4.3 ft15 sW (276°)
Thu 12:50 AM4.3 ft-WNW (287°)
Wed 11:50 PM4.3 ft-W (269°)
Wed 10:50 PM4.6 ft15 sWSW (258°)
Wed 9:50 PM4.3 ft16 sSW (224°)

Surf zone forecast

Sonoma and Marin County Coastal Areas. Issued 8:55 PM PDT Thu Oct 15.

ForecastFridaySaturday
Surf height4 to 7 feet5 to 8 feet
Water temperature--
Thunderstorm potentialNone expectedNone expected
WeatherMostly sunnyPartly cloudy
High temperature59-9057-86
WindNW at 3 mphNW at 6 mph becoming NW at 10 mph
TidesHigh 4.2 ft, 5:32 AMLow 3.6 ft, 9:28 AMHigh 5.2 ft, 3:11 PMLow 0.5 ft, 10:32 PMHigh 4.2 ft, 6:48 AMLow 3.7 ft, 10:56 AMHigh 4.9 ft, 4:10 PMLow 0.6 ft, 11:38 PM

Tide

TideHigh 4.2 ft at Fri 5:32 AM, Low 3.6 ft at Fri 9:28 AM, High 5.2 ft at Fri 3:11 PM, Low 0.5 ft at Fri 10:32 PM, High 4.2 ft at Sat 6:48 AM, Low 3.7 ft at Sat 10:56 AM, High 4.9 ft at Sat 4:10 PM, Low 0.6 ft at Sat 11:38 PM. Heights in feet above mean lower low water.0 ft2 ft4 ft6 ft8 ft6 AMNoon6 PMSat6 AMNoon6 PMSun4.2 ft5:32 AM3.6 ft9:28 AM5.2 ft3:11 PM0.5 ft10:32 PM4.2 ft6:48 AM3.7 ft10:56 AM4.9 ft4:10 PM0.6 ft11:38 PMTideHigh 4.2 ft at Fri 5:32 AM, Low 3.6 ft at Fri 9:28 AM, High 5.2 ft at Fri 3:11 PM, Low 0.5 ft at Fri 10:32 PM, High 4.2 ft at Sat 6:48 AM, Low 3.7 ft at Sat 10:56 AM. Heights in feet above mean lower low water.0 ft2 ft4 ft6 ft8 ftNoonSat4.2 ft5:32 AM3.6 ft9:28 AM5.2 ft3:11 PM0.5 ft10:32 PM4.2 ft6:48 AM3.7 ft10:56 AM
Tide. High 4.2 ft at Fri 5:32 AM, Low 3.6 ft at Fri 9:28 AM, High 5.2 ft at Fri 3:11 PM, Low 0.5 ft at Fri 10:32 PM, High 4.2 ft at Sat 6:48 AM, Low 3.7 ft at Sat 10:56 AM, High 4.9 ft at Sat 4:10 PM, Low 0.6 ft at Sat 11:38 PM. Heights in feet above mean lower low water.

Beach

County
Marin County
State
California
Latitude
37.8228° N
Longitude
122.5054° W

What is measuring near here

The 5 instruments nearest Black Sands Beach, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.5 miles away.

measured now3 instruments

Citizen station FW6803FW6803

In a volunteer observer's own ground/5.6 mi away/198 ft/- ft from here

temp, humidity, wind, precip, pressure

San Francisco INTLSFO

At an airfield/15.8 mi away/16 ft/- ft from here

temp, wind, gust, visibility, precip, pressure

measured daily2 instruments

San Francisco 4.2 WCA-SF-13

In a volunteer observer's own ground/3.2 mi away/209 ft/- ft from here

precip, snowfall, snow depth

San Francisco DowntownSFOC1

At a cooperative observer's station/5.6 mi away/112 ft/- ft from here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in California

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Near Black Sands Beach

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Near Black Sands Beach

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