Tuesday, March2, 2021
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Marine Weather and Tides
Tamalpais-Homestead Valley, CA

Version 3.4
NOTICE
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 6:38AMSunset 6:06PM Tuesday March 2, 2021 5:28 AM PST (13:28 UTC) Moonrise 10:17PMMoonset 8:52AM Illumination 85% Phase: Waning Gibbous; Moon at 19 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
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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 352 Am Pst Tue Mar 2 2021
Today..NE winds up to 10 kt, becoming W this afternoon.
Tonight..SW winds 5 to 15 kt.
Wed..SW winds 10 to 20 kt with gusts up to 25 kt.
Wed night..SW winds 10 to 20 kt with gusts up to 25 kt.
Thu..S winds 5 to 15 kt.
Thu night..SW winds 5 to 15 kt.
Fri..S winds 5 to 10 kt. A chance of rain.
Sat..W winds 5 to 10 kt. Rain likely.
PZZ500 352 Am Pst Tue Mar 2 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A low pressure system over the eastern pacific will reach southern california Wednesday. Building northwest swell will cause hazardous sea conditions for smaller vessels later today into the evening. A moderate period northwest swell will then turn to long period swell late in the week. A slow moving low pressure system arrives from the northwest late in the week with rain this weekend.


7 Day Forecast for Marine Location Near Tamalpais-Homestead Valley, CA
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location: 37.89, -122.57     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 021248 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 448 AM PST Tue Mar 2 2021

SYNOPSIS. Dry and mild weather conditions will prevail over the region through midweek with slight cooling likely late in the week. Rain chances increase late Friday into Saturday with the potential for unsettled conditions to persist into early next week.

DISCUSSION. as of 03:23 AM PST Tuesday . A mid/upper level low pressure system and associated trough remains well off of the West Coast early this morning. It's only impact to the region is mid/high level clouds advecting inland across California as dry weather conditions prevail at the surface. This system is forecast to remain well enough offshore to maintain dry conditions over the region before eventually dropping southward and then across southern California on Wednesday. Day-to-day fluctuations in temperatures are expected to be minimal through midweek, yet will be at or above seasonal averages. Generally speaking, look for upper 50s to lower 60s at the coast with more widespread 60s to near 70 inland. Meanwhile, overnight lows will range from the mid/upper 30s in the colder interior valleys with 40s elsewhere.

As the aforementioned system shifts inland over the Desert Southwest through midweek, a mid/upper level trough will deepen over the eastern Pacific late in the week. This system is then forecast to shift eastward toward the West Coast late in the week potentially bringing widespread precipitation to the region Friday night into Saturday. However, the deterministic and most ensemble members only indicate light precipitation for our region. Temperatures late in the week and into the upcoming weekend will also cool as a result.

Beyond the upcoming weekend, the ensembles favor unsettled weather conditions across our region heading into next week as troughing persists over the eastern Pacific and along the West Coast. However, this pattern would likely only result in light precipitation amounts for our region. Seasonably cool conditions are also likely given this pattern.

AVIATION. as of 4:48 AM PST Tuesday . For the 12Z TAFs. VFR. Low clouds continue to focus near a cool front very slowly approaching the southern and central outer coastal (and offshore) waters per recent satellite imagery and NAM output. The cool front looks mainly elevated until later today and tonight when surface cooling arrives based on the NAM and the air ahead of the front is still dry to very dry. Add in today's diurnal mixing and chances are good the low clouds will mix out prior to reaching the north Central Coast later today despite recent high resolution model forecasts showing otherwise. Best chance of coastal low clouds will be tonight and Wednesday morning as cool air advection combines with nocturnal cooling. Not confident enough to introduce bkn-ovc ceilings KMRY and KSNS for the 12z taf cycle, later shifts can reassess and add ceilings if needed. Meanwhile high clouds will continue to move in stretching out from the low offshore, the low reaches southern California Wednesday. Vicinity of KSFO . VFR, light and variable wind increasing to 10 knots westerly in the afternoon and early evening. SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR, cool air drainage winds this morning becoming onshore 5 to 10 knots in the afternoon and early evening. Cool air advection and cool air drainage winds combining tonight and Wednesday morning tending to offset low cloud development, at least for mid to late Tuesday evening. Lower confidence cloud cover forecast late tonight and Wednesday morning.

MARINE. as of 3:53 AM PST Tuesday . A low pressure system over the eastern Pacific will reach southern California Wednesday. Building northwest swell will cause hazardous sea conditions for smaller vessels later today into the evening. A moderate period northwest swell will then turn to long period swell late in the week. A slow moving low pressure system arrives from the northwest late in the week with rain this weekend.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pigeon Pt 10-60 nm from 12 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm from 4 PM



PUBLIC FORECAST: RGass AVIATION/MARINE: Canepa

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46237 - San Francisco Bar, CA (142) 8 mi58 min 50°F3 ft
FTPC1 - 9414290 - San Francisco, CA 8 mi58 min S 2.9 G 4.1 47°F 53°F1015.2 hPa
RCMC1 - 9414863 - Richmond, CA 9 mi58 min NW 4.1 G 4.1 49°F 54°F1015.2 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi58 min N 5.1 G 7 50°F 1015.5 hPa
PXSC1 11 mi58 min 51°F 44°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 11 mi58 min ENE 1.9 G 1.9 51°F 1014.3 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi58 min Calm G 1 50°F 1015.3 hPa
OBXC1 14 mi58 min 51°F 35°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi58 min E 1.9 G 5.1
AAMC1 - 9414750 - Alameda, CA 16 mi58 min E 2.9 G 4.1 50°F 55°F1015.4 hPa
LNDC1 17 mi58 min E 1.9 G 2.9 50°F 1015.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 17 mi38 min ESE 5.8 G 5.8 50°F4 ft1015.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 20 mi58 min ESE 1.9 G 2.9 47°F 1015.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 23 mi58 min 51°F1015.1 hPa
UPBC1 26 mi58 min NNW 1 G 2.9
MZXC1 - 9415102 - Martinez-Amorco CA 26 mi58 min Calm G 1.9 46°F 55°F1015.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 30 mi58 min S 1.9 G 4.1 45°F 55°F1015.4 hPa
RTYC1 - 9414523 - Redwood City, CA 33 mi58 min S 1 G 1.9 47°F 59°F1015.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 36 mi103 min SE 4.1 42°F 1016 hPa37°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 38 mi58 min E 1 G 6 53°F 1015.5 hPa
BDXC1 40 mi82 min 50°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 40 mi48 min ESE 9.7 G 12 48°F 1014.9 hPa44°F
46214 - Point Reyes, CA (029) 47 mi62 min 49°F6 ft

Wind History for San Francisco, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA18 mi33 minN 010.00 miFair36°F30°F81%1015.2 hPa
San Francisco, San Francisco International Airport, CA22 mi32 minWNW 510.00 miMostly Cloudy45°F32°F61%1015 hPa
Oakland, Metro Oakland International Airport, CA23 mi35 minSE 310.00 miMostly Cloudy47°F32°F56%1015.3 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
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S10SW10NW6Calm5CalmCalmN3CalmCalmCalmCalmCalm
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3NE6CalmCalm

Tide / Current Tables for Sausalito, Corps of Engineers Dock, San Francisco Bay, California
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Sausalito
Click for Map
Tue -- 01:47 AM PST     5.77 feet High Tide
Tue -- 06:39 AM PST     Sunrise
Tue -- 07:49 AM PST     0.79 feet Low Tide
Tue -- 08:52 AM PST     Moonset
Tue -- 02:00 PM PST     5.12 feet High Tide
Tue -- 06:04 PM PST     Sunset
Tue -- 07:54 PM PST     0.91 feet Low Tide
Tue -- 10:17 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.85.65.85.34.331.810.81.22.13.14.14.85.14.84.131.91.10.91.32.13.2

Tide / Current Tables for Richardson Bay Entrance, San Francisco Bay, California Current
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Richardson Bay Entrance
Click for Map
Tue -- 03:17 AM PST     -0.83 knots Max Ebb
Tue -- 05:57 AM PST     0.00 knots Slack
Tue -- 06:39 AM PST     Sunrise
Tue -- 08:16 AM PST     1.01 knots Max Flood
Tue -- 08:52 AM PST     Moonset
Tue -- 11:48 AM PST     -0.00 knots Slack
Tue -- 03:39 PM PST     -0.73 knots Max Ebb
Tue -- 06:04 PM PST     Sunset
Tue -- 06:10 PM PST     0.00 knots Slack
Tue -- 08:33 PM PST     0.96 knots Max Flood
Tue -- 10:17 PM PST     Moonrise
Tue -- 11:57 PM PST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.5-0.7-0.8-0.7-0.400.6110.70.4-0.1-0.3-0.6-0.7-0.7-0.4-0.10.50.90.90.70.4

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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.
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