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Cowell Ranch Beach, California

Beach in San Mateo County, California

Air quality

The air at Cowell Ranch Beach

Index 46, good, led by ozone. Read at 7 PM from its reporting area, Redwood City (CA), 13 miles off.

46Good
  • Fine particles (PM2.5)42Good13.7 mi
  • Ozone46Good30 ppb13.7 mi
  • Nitrogen dioxide23Good24.1 ppb13.7 mi
  • Carbon monoxide-0.4 ppm13.7 mi

The days ahead

Good each day through Tue Oct 20, led by ozone. Yesterday measured 40, good.

Smoke, the next 41 hours

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

ThuFriSat

Precipitation

What has fallen at Cowell Ranch Beach

None in the last 3 days, to Thu 6 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 Cowell Ranch Beach, the next 41 hours

Visibility stays 7 miles or more through Sat 11 AM, lowest 8 miles Sat 3 AM.

ThuFriSat
Cowell Ranch Beach from its sand, nowLooking WSW from the sand at 7:40 PM, night, clear, waves about 5.5 ft every 11 s.220SW230240250260Facing WSW 240°Moon 26° leftWind 6 mphfrom NW, along the beach
Looking WSW from the sand at 7:40 PM, night, clear, waves about 5.5 ft every 11 s.
NESW

Facing WSW 240°

300 ft

From above: the edge, the break, the view

Surf and swim

The surf zone forecast for San Francisco and San Mateo County Coastal Areas, and the waves at buoy 46012, 24.9 mi away.

Friday

Surf height
4 to 7 feet
Water temperature
60 to 61 °F

Waves at buoy 46012, Half Moon Bay

Wave height
3.3 ft
Period
11 s
From
-
Water
60 °F
Read
Thu 7:00 PM
Distance
24.9 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 46012, last 48 hoursSignificant wave height from 3.0 ft to 4.3 ft; 3.3 ft at Thu 7:00 PM. Arrows show the way the waves travel.0 ft2 ft4 ft6 ftWed6 AMNoon6 PMThu6 AMNoon3.3 ftWave height at buoy 46012, last 48 hoursSignificant wave height from 3.0 ft to 4.3 ft; 3.3 ft at Thu 7:00 PM. Arrows show the way the waves travel.0 ft2 ft4 ft6 ftWedNoonThuNoon3.3 ft
Significant wave height from 3.0 ft to 4.3 ft; 3.3 ft at Thu 7:00 PM. Arrows show the way the waves travel.
Every hour, last 24 hours
TimeWave heightPeriodFrom
Thu 7:00 PM3.3 ft11 s-
Thu 6:00 PM3.3 ft10 s-
Thu 5:00 PM3.0 ft13 s-
Thu 4:00 PM3.0 ft13 s-
Thu 3:00 PM3.3 ft13 s-
Thu 2:00 PM3.3 ft12 s-
Thu 1:00 PM3.3 ft14 s-
Thu 12:00 PM3.6 ft14 s-
Thu 11:00 AM3.3 ft14 s-
Thu 10:00 AM3.6 ft14 s-
Thu 9:00 AM3.6 ft14 s-
Thu 8:00 AM3.6 ft15 s-
Thu 7:00 AM3.3 ft14 s-
Thu 6:00 AM3.3 ft15 s-
Thu 5:00 AM3.9 ft13 s-
Thu 4:00 AM3.3 ft14 s-
Thu 3:00 AM3.6 ft14 s-
Thu 2:00 AM3.9 ft15 s-
Thu 1:00 AM3.6 ft15 s-
Thu 12:00 AM3.6 ft15 s-
Wed 11:00 PM3.6 ft14 s-
Wed 10:00 PM3.3 ft14 s-
Wed 9:00 PM3.6 ft15 s-
Wed 8:00 PM3.3 ft13 s-

Surf zone forecast

San Francisco and San Mateo County Coastal Areas. Issued 5:35 PM PDT Thu Oct 15.

ForecastFridaySaturday
Surf height4 to 7 feet4 to 7 feet
Water temperature60 to 61 °F-
Thunderstorm potentialNone expectedNone expected
WeatherMostly sunnyPartly cloudy
High temperature63-9560-90
WindNE at 6 mph becoming NE at 4 mphN at 4 mph becoming N at 6 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
San Mateo County
State
California
Latitude
37.4236° N
Longitude
122.4363° W

What is measuring near here

The 5 instruments nearest Cowell Ranch Beach, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.2 miles away.

measured now3 instruments

Citizen station GW4019GW4019

In a volunteer observer's own ground/2.5 mi away/67 ft/- ft from here

temp, humidity, wind, precip, pressure

Half Moon BayHAF

At an airfield/7.1 mi away/31 ft/- ft from here

temp, wind, gust, visibility, precip, pressure

Pulgas RAWSPUGC1

A remote fire weather station/8.4 mi away/650 ft/- ft from here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Half Moon Bay 1.0 SCA-SM-19

In a volunteer observer's own ground/2.2 mi away/65 ft/- ft from here

precip, snowfall, snow depth

Half Moon BayHMBC1

At a cooperative observer's station/3.4 mi away/23 ft/- ft from here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in California

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Near Cowell Ranch Beach

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Near Cowell Ranch Beach

River and lake gauges