Thursday, September16, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Cambrian Park, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:49AMSunset 7:15PM Thursday September 16, 2021 2:26 PM PDT (21:26 UTC) Moonrise 4:14PMMoonset 12:59AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help
PZZ535 Monterey Bay- 817 Am Pdt Thu Sep 16 2021
Today..SW winds 5 to 10 kt, becoming W 10 to 15 kt this afternoon. Wind waves 4 to 5 ft. SW swell around 2 ft at 16 seconds.
Tonight..SW winds 5 to 10 kt. Wind waves 4 to 5 ft. SW swell around 2 ft at 15 seconds.
Fri..SW winds 10 to 15 kt. Wind waves 4 to 5 ft. SW swell around 2 ft at 14 seconds. Patchy fog.
Fri night..W winds 5 to 10 kt. Wind waves 3 to 4 ft.
Sat..W winds 10 to 15 kt. Wind waves 2 to 3 ft.
Sat night..W winds around 5 kt. Wind waves 2 to 3 ft. A chance of showers.
Sun..NW winds 5 to 10 kt. Wind waves 4 to 5 ft. SW swell around 2 ft. A chance of showers.
Mon..N winds 10 to 15 kt. Wind waves 5 to 6 ft. S swell around 2 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 817 Am Pdt Thu Sep 16 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds near the coast and breezier northwest winds across the outer waters, with strongest winds in the northern outer waters. Winds will increase across the northern and outer waters today, creating hazardous conditions for smaller vessels. Chances for showers increase over the weekend as a cold front approaches northern california. Wind driven seas prevail with a weak, long period southerly swell through the forecast period.


7 Day Forecast for Marine Location Near Cambrian Park, CA
   Hourly   EDIT   Help
location: 37.22, -121.88     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS66 KMTR 161949 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1249 PM PDT Thu Sep 16 2021

SYNOPSIS. A weaker dry cold front will allow for a deepening marine layer and cooler temperatures to end the week. A deeper, wetter trough arrives this weekend and bring cooler temperatures, breezy onshore winds, and a chance of rain for some. A potential offshore wind event will develop Sunday night into Tuesday.

DISCUSSION. as of 01:00 PM PDT Thursday . The marine layer has deepened steadily through this morning, from 2000 feet at sunrise, to nearly 2400 feet as of noon. This deepening is occurring as the broader pressure is on the decline on the eve of the arrival of a shortwave trough embedded in the deeper polar low. Surface pressure readings are roughly down 1.8 to 2.4mb versus 24 hours ago, while temperatures are lower and humidity is up slightly. Latest satellite imagery shows the marine layer remaining banked up along the immediate coastline from south of Cape Mendocino through Baja California, and remaining across a healthy portion of the coastal/bayside valleys. Overcast to mostly cloudy skies are being reported at Santa Rosa, Napa, Petaluma, Half Moon Bay, Oakland, San Francisco, and Watsonville within the last over due to this deepening marine layer. Despite the layer deepening, the edges of the marine layer will eventually mix out and fade away and bring some afternoon clearing to communities farther from the source origin along the coasts. Otherwise, satellite imagery shows the cooler, drier air lingering beyond the dry cold front to the northwest that will through the region over the remainder of the day/tonight. This will consequently bring cooler conditions to the region, with the biggest swing across the interior of 3-6 degrees, with only 1-2 degrees of cooling along the coast versus yesterday.

For tonight, the marine layer is anticipated to deepen further (2500-2800+ feet) and make a deeper intrusion inland as the cool air advection aloft should be weak enough to still allow for some capping.

Tomorrow will see this initial, weaker shortwave lift and the flow flatten temporarily through Friday before a deeper, wetter wave embedded in the polar low arrives later into this weekend. Thus, tomorrow will be marginally warmer and drier than today after the morning clouds mix out, though temperatures Friday will still be 3 to 12 degrees below normal.

A bigger change in the weather pattern arrives with a second deeper wave along a vigorous upper level jet over the Aleutian Islands late Saturday into Sunday. Ensemble data suggests highest probability of seeing rain will be across the North Bay, with 0.10-0.20" possible in the valleys, and up to 0.30" possible along the wetter coastal ranges. Precipitation amounts less than a .10" are expected south of the Golden Gate, with roughly a few to several hundredths for the Peninsula and East Bay bayshore. For areas in the eastern interior and South Bay, the wetter scenarios favor a few hundredths, while the drier (majority, higher probability) favor staying dry or just seeing a trace. Saturday night into Sunday is the current timeframe for the arrival of most of this precipitation, from northwest to southeast, though that could still fluctuate by about 6-12 hours until models come into full alignment. Breezy southwest winds will accompany the arrival of the cold front, on the order of 10-20 mph sustained, with localized gusts in favored areas up to 35mph. Otherwise, both Saturday and Sunday will remain on the cooler side, with widespread temperatures in the mid 60s to upper 70s across the region.

By Sunday night into Monday morning (and again Monday night into Tuesday morning), a steepening northerly low level/surface pressure gradient will enable offshore flow through the Sacramento Valley/into the eastern periphery of the North/East Bay interior ranges. We are still 24 hours too soon to really dial in the wind speeds per the higher resolution models, but for now, starting to look as if sustained N/NE winds at the higher peaks of 10-20mph with gusts 25-40mph may be possible. The strongest winds would occur between 3am and 10am Monday morning. Overnight humidity recoveries are slated to be fair given the recent addition of moisture in the area, ie as low as 35-40%, but will drop down to the mid teens during the day on Monday at the higher interior peaks. Model trend on these winds has come down slightly from earlier in the week, but still warrant close watch in the event that critical fire weather conditions present themselves. For now, these are borderline conditions, and should may eventually necessitate the issue of a fire weather watch. Again, fire weather fuels remain extremely dry, and still record dry in some interior locations. A wetting rain (in excess of >.10") could at least temporarily abate some concerns for the upcoming offshore wind event. The areas in question are right along the boundary of hitting these thresholds, so again, another interesting item to watch over the coming days as we get better data/the event unfolds.

Beyond the immediate concerns above, a trend towards warmer conditions should be expected into midweek as high pressure builds. Ensemble data comes out of phase by mid to late next week.

AVIATION. as of 11:18 AM PDT Thursday . For the 18z TAFs. A mix of VFR/MVFR/local IFR across terminals, as marine stratus has been slow to burn off this morning. Satellite imagery shows clear skies away from the coast, with stratus lingering around Monterey Bay, most of SF Bay from KSFO/KOAK north through Sonoma County, and over the coastal waters. Expecting VFR conditions by early afternoon with light to moderate onshore winds. MVFR cigs will return tonight with IFR cigs around Monterey Bay and in coastal valleys.

Vicinity of KSFO . MVFR, as stratus slowly recedes from south to north over the bay and terminal. VFR conditions expected around 19z. Moderate onshore winds up to 15 knots this afternoon. While clouds move back into the bay Thursday evening, VFR conditions prevail before clouds fill in late for MVFR cigs early Friday morning.

KSFO Bridge Approach . Approach clear on the south end but clouds linger close to the terminal. These clouds should clear by 19z.

Monterey Bay . VFR/MVFR conditions trending to VFR this afternoon, once stratus burns off. Light to moderate onshore breezes this afternoon. Another night of early return to MVFR conditions lowering to IFR conditions later in the TAF period.

MARINE. as of 12:24 PM PDT Thursday . Generally light winds near the coast and breezier northwest winds across the outer waters, with strongest winds in the northern outer waters. Winds will increase across the northern and outer waters today, creating hazardous conditions for smaller vessels. Chances for showers increase over the weekend as a cold front approaches Northern California. Wind driven seas prevail with a weak, long period southerly swell through the forecast period.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Arena to Pt Reyes 0-10 nm from 3 PM



PUBLIC FORECAST: DRP AVIATION: Lorber MARINE: Lorber

Visit us at www.weather.gov/sanfrancisco

Follow us on Facebook, Twitter, and YouTube at: www.facebook.com/nwsbayarea www.twitter.com/nwsbayarea www.youtube.com/nwsbayarea


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46269 21 mi56 min 56°F 62°F4 ft
RTYC1 - 9414523 - Redwood City, CA 27 mi56 min N 7 G 9.9 64°F 1011.7 hPa
ELXC1 - Elkhorn Slough Reserve, CA 29 mi101 min WNW 7 60°F 1014 hPa54°F
MLSC1 - Moss Landing, South Harbor, CA 29 mi37 min 63°F
46092 - MBM1 33 mi72 min W 12 57°F 59°F1011.9 hPa (+0.0)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 41 mi36 min WSW 7.8 G 9.7 57°F 61°F7 ft1012.8 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 41 mi60 min 57°F3 ft
MEYC1 42 mi50 min SW 12 G 17 60°F 58°F1012 hPa
46114 - West Monterey Bay, CA 44 mi60 min 61°F7 ft
AAMC1 - 9414750 - Alameda, CA 44 mi56 min W 8 G 13 60°F 67°F1011.8 hPa
LNDC1 45 mi56 min W 8.9 G 12 61°F 1011.4 hPa
OBXC1 47 mi56 min 59°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi56 min W 12 G 13 59°F 1011.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 47 mi56 min W 11 G 12
PXOC1 - 9414311 - San Francisco (Pier 1), CA 48 mi56 min W 8 G 12 59°F 1010.6 hPa
PXSC1 49 mi56 min 60°F 60°F

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
N9
G13
N11
G15
NW12
G15
N10
G13
N7
G13
NW8
G11
NW8
SW3
G7
S4
S3
S3
SE3
S3
W4
G7
W9
W5
W3
W4
NW4
W1
SE1
G5
N5
G8
N6
G9
N8
G11
1 day
ago
N11
G15
N10
N10
G13
N10
G14
NW14
NW11
G14
NW11
NW6
G10
NW4
--
E2
NE3
E2
E2
NW4
N3
NE2
N2
NW6
NE2
W2
G5
N2
G7
N4
G7
N7
2 days
ago
N7
G11
N9
G12
NW11
G14
N13
N11
N11
NW5
N6
NW5
NW3
W3
S1
W2
S2
W3
NW2
W2
S1
E1
NW1
N4
N2
G5
N4
N9
G12

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose / Reid / Hillv, CA9 mi39 minW 510.00 miClear77°F48°F36%1010.2 hPa
San Jose, San Jose International Airport, CA11 mi33 minN 010.00 miA Few Clouds77°F48°F36%1009.9 hPa
Watsonville, Watsonville Municipal Airport, CA20 mi33 minW 810.00 miMostly Cloudy62°F52°F70%1012.3 hPa
Palo Alto Airport, CA22 mi3.7 hrsENE 68.00 miA Few Clouds63°F52°F68%1011.5 hPa

Link to 5 minute data for KRHV

Wind History from RHV (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrN8NW9W11NW9NW8W7NW4NW3----------------S544SE6S6S5W5W5
1 day agoNW8--NW6NW6NW8NW6W5W5----------------CalmCalmCalmCalmCalmCalmCalmCalm
2 days agoNW9NW9NW6W10W6NW6W5Calm----------------CalmCalm--CalmCalm--CalmNW8

Tide / Current Tables for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Gold Street Bridge
Click for Map
Thu -- 01:58 AM PDT     Moonset
Thu -- 05:03 AM PDT     -0.25 feet Low Tide
Thu -- 06:51 AM PDT     Sunrise
Thu -- 11:07 AM PDT     8.19 feet High Tide
Thu -- 05:08 PM PDT     3.08 feet Low Tide
Thu -- 05:15 PM PDT     Moonrise
Thu -- 07:13 PM PDT     Sunset
Thu -- 09:47 PM PDT     10.12 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
6.54.52.61.10.1-0.20.21.63.65.77.48.27.975.74.43.53.13.65.47.69.510.19.6

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
   EDIT      (on/off)   Help   One Week of Data
Dumbarton Point 2.3 mi NE
Click for Map
Thu -- 01:43 AM PDT     -1.25 knots Max Ebb
Thu -- 01:59 AM PDT     Moonset
Thu -- 04:42 AM PDT     0.01 knots Slack
Thu -- 06:51 AM PDT     Sunrise
Thu -- 07:43 AM PDT     1.36 knots Max Flood
Thu -- 10:56 AM PDT     -0.01 knots Slack
Thu -- 02:53 PM PDT     -0.53 knots Max Ebb
Thu -- 04:46 PM PDT     0.00 knots Slack
Thu -- 05:15 PM PDT     Moonrise
Thu -- 07:13 PM PDT     Sunset
Thu -- 07:18 PM PDT     0.90 knots Max Flood
Thu -- 10:00 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-1.1-1.2-1.2-1-0.50.20.91.31.31.10.6-0-0.3-0.4-0.5-0.5-0.40.10.60.90.80.60-0.4

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of CentralWestCoast    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




Please read website Cookie, Privacy, and Disclamers by clicking HERE.