Friday, March5, 2021
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Marine Weather and Tides
Walnut Creek, 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 6:31AMSunset 6:07PM Friday March 5, 2021 5:33 PM PST (01:33 UTC) Moonrise 12:39AMMoonset 10:40AM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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- 225 Pm Pst Fri Mar 5 2021
Tonight..SW winds 10 to 20 kt with gusts up to 25 kt, becoming W 10 to 20 kt with gusts up to 25 kt after midnight. Rain.
Sat..W winds 5 to 15 kt.
Sat night..NW winds 10 to 20 kt with gusts up to 25 kt.
Sun..W winds 5 to 15 kt.
Sun night..W winds 5 to 15 kt.
Mon..SW winds 10 to 20 kt with gusts up to 25 kt. A chance of rain.
Mon night..SW winds 5 to 10 kt. Rain likely.
Tue..S winds up to 10 kt. Rain likely.
Wed..NW winds 5 to 10 kt. A chance of rain.
PZZ500 225 Pm Pst Fri Mar 5 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Locally gusty southerly winds will continue as a cold front inches closer to the coast early tonight. The cold front will then move through the coastal waters tonight and early Saturday resulting in gusty winds and periods of rain. A longer period moderate northwest swell will also continue to result in hazardous conditions for small craft through Saturday before subsiding on Sunday. Another low pressure system approaching from the northwest will bring more rain and larger swell early to mid next week.


7 Day Forecast for Marine Location Near Walnut Creek, CA
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location: 37.9, -122.05     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 052300 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 300 PM PST Fri Mar 5 2021

SYNOPSIS. Seasonal temperatures and light southwest winds today. Rain is still looking to move across the area later tonight. Rain totals do not look impressive, as the system will move over the area too fast for much to accumulate. Temperatures will remain cool this weekend and onshore winds breezy Saturday, becoming light Sunday. More chances for rain remaining in the forecast for early next week, keeping temperatures cooler than normal. Warming trend possible next Friday.


DISCUSSION. as of 02:59 PM PST Friday . Friday afternoon has been offering sunny skies and warming temperatures with areas breaking into the 60s. But the next few hours will come with changes, as a cold front approaches the Bay Area. Current radar and satellite imagery show this front moving through northern Mendocino Co, which puts it on track to enter northern Sonoma County before sunset. The line of rain is set to move into the San Francisco Bay before midnight, when the region will start to see more widespread chances. Areas as far south as the Big Sur coast will see some rain into the late night before things begin to clear for Saturday morning. Rainfall rates look to stay light with only brief periods of moderate rainfall. Rain totals are forecast to be between 0.50" and 0.75" on higher elevations along the coast of Sonoma Co. Most North Bay locations as well as San Francisco will stay between 0.25" and 0.5" while the East and South Bay will fall between 0.10" and 0.25. The Santa Cruz Mtns and the Big Sur Coast is also forecasted to fall into the 0.10" to 0.25" range and the areas in between look to stay below the 0.10" mark. The last few rain chances are set to move out of the area early Saturday morning.

Behind this cold front, cooler air will filter into the Bay Area and Central Coast, causing highs to peak in the upper 50s and lower 60s for Saturday and Sunday. Lows will back off into the mid 40s to lower 40s along the coast and into the mid to lower 30s within the interior valleys.

There is strong confidence for a low pressure bringing in more rain late Monday evening and providing chances that could persist until Thursday morning. The official forecast has this low slightly offshore and moving southward along the coast through the mid week of next week. This will provide long-lasting but light to moderate rainfall along coastal areas, with much lighter rain falling for more inland areas. Coastal Mountains will see the higher rainfall amounts with the 3-day totals ranging from 1.00" to 1.50". Lower elevations along the coast look to range from 0.50" to 1.00" during that 3-day period, while areas in the East and South Bay look to stay below 0.25". Snow levels may fall to the 2500' range as this low pressure moves through, causing chances for accumulating snow along higher peaks with the Santa Lucias seeing the best chances for accumulation.

ECMWF and GFS deterministic models and ensemble members are in fair agreement on this low's track, which has it move past the Big Sur coast before turning to the East in SLO Co. The ECMWF members do hint at some moisture wrapping around the low as it move inland, providing the Big Sur coast with longer-lasting rain chances. This doesn't seem to be a likely scenario, but will be something to consider if more ensemble members hint at it.

AVIATION. as of 09:25 AM PST Friday . For the 18Z TAFs. A few low clouds impacted terminals overnight and early this morning, but as of the 18Z VFR conditions prevail. Expecting mainly VFR conditions until later this evening as a cold front bring lower cigs and rain. Timing has been holding steady with impacts to KSTS/KAPC 03-05Z then KSFO/KOAK 05-07Z and locations to the south later in the night and early Saturday morning. Winds will be gusty ahead and with the fropa. Not expecting much lingering of showers behind the front. A few cigs will linger early Saturday, but then transition to VFR with clearing. Vicinity of KSFO . VFR through this evening. Southwesterly winds will increase ahead of and along the frontal boundary today with gusty winds more likely tonight as the front nears. Onset of precip has remained the same 05-07Z along with lowering ceilings. Northwesterly winds will develop in wake of the frontal passage with precipitation ending into Saturday morning. Cigs will gradually lift by mid-morning saturday as well.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR through early tonight. Southerly winds will then return as a frontal boundary approaches the region late tonight and brings -ra to the terminals after 06Z Saturday. A few showers may linger early Saturday, but clearing toward the end of the taf.

MARINE. as of 02:59 PM PST Friday . Locally gusty southerly winds will continue as a cold front inches closer to the coast early tonight. The cold front will then move through the coastal waters tonight and early Saturday resulting in gusty winds and periods of rain. A longer period moderate northwest swell will also continue to result in hazardous conditions for small craft through Saturday before subsiding on Sunday. Another low pressure system approaching from the northwest will bring more rain and larger swell early to mid next week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm



PUBLIC FORECAST: Murdock AVIATION: MM MARINE: MM

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
UPBC1 10 mi45 min W 15 G 20
MZXC1 - 9415102 - Martinez-Amorco CA 10 mi45 min WSW 9.9 G 16 59°F 56°F1016.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 11 mi45 min WSW 13 G 17 60°F 56°F1016.3 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 13 mi45 min WNW 8 G 11 64°F 1015.9 hPa
LNDC1 14 mi45 min SSW 12 G 14 59°F 1016.7 hPa
CQUC1 15 mi50 min 56°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi45 min S 8 G 12 59°F 1016.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi45 min S 8 G 12
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 16 mi45 min W 8 G 12 58°F 1016.6 hPa
AAMC1 - 9414750 - Alameda, CA 16 mi45 min 58°F
OBXC1 17 mi45 min 58°F 51°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi45 min W 11 G 13 58°F 1017.1 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 19 mi45 min NNW 1.9 G 8 60°F 1016 hPa
RCMC1 - 9414863 - Richmond, CA 19 mi51 min SW 5.1 G 8.9 57°F 55°F1017.1 hPa
PXSC1 20 mi45 min 60°F 51°F
SFXC1 - San Francisco Bay Reserve, CA 21 mi108 min W 12 65°F 1018 hPa45°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 21 mi52 min Calm 57°F 1017 hPa
FTPC1 - 9414290 - San Francisco, CA 23 mi51 min SW 5.1 G 8.9 59°F 54°F1017.1 hPa
RTYC1 - 9414523 - Redwood City, CA 28 mi45 min SW 7 G 8.9 61°F 60°F1017.5 hPa
46237 - San Francisco Bar, CA (142) 32 mi63 min 52°F9 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 43 mi33 min SSE 12 G 16 51°F1017 hPa (-3.0)

Wind History for Union Pacific Rail Road Bridge (UPRR), CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA6 mi40 minSW 1110.00 miFair62°F46°F56%1015 hPa
Oakland, Metro Oakland International Airport, CA16 mi40 minWSW 1210.00 miMostly Cloudy63°F49°F60%1016.9 hPa
Hayward, Hayward Air Terminal, CA17 mi39 minW 1010.00 miFair61°F47°F60%1017.7 hPa
Livermore, Livermore Municipal Airport, CA18 mi40 minW 1010.00 miFair63°F43°F48%1016 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Last 24hrW8SW7CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmSE3CalmS3S3S3NW6N76W6SW11W14SW11
1 day agoS12S11--S11S7SW7SW5SW9S6SW3CalmCalmCalm------3E3--NW8--NW12NW10W9
2 days agoNW3CalmSE3CalmCalmCalmCalmCalmS4S4SE3CalmS4S3S4S3S6S7S6W9NW13W9SW10SW9

Tide / Current Tables for Suisun Point, Carquinez Strait, California
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Suisun Point
Click for Map
Fri -- 12:40 AM PST     Moonrise
Fri -- 05:36 AM PST     5.45 feet High Tide
Fri -- 06:33 AM PST     Sunrise
Fri -- 10:40 AM PST     Moonset
Fri -- 01:29 PM PST     0.41 feet Low Tide
Fri -- 05:32 PM PST     Last Quarter
Fri -- 06:06 PM PST     Sunset
Fri -- 07:55 PM PST     3.81 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.62.12.93.94.95.45.454.33.32.31.40.80.50.50.91.62.43.13.63.83.632.4

Tide / Current Tables for Roe Island S, Suisun Bay, California Current
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Roe Island S
Click for Map
Fri -- 12:40 AM PST     Moonrise
Fri -- 02:09 AM PST     0.00 knots Slack
Fri -- 04:51 AM PST     0.98 knots Max Flood
Fri -- 06:33 AM PST     Sunrise
Fri -- 08:08 AM PST     -0.00 knots Slack
Fri -- 10:39 AM PST     Moonset
Fri -- 11:44 AM PST     -2.04 knots Max Ebb
Fri -- 04:21 PM PST     0.00 knots Slack
Fri -- 05:32 PM PST     Last Quarter
Fri -- 06:05 PM PST     Sunset
Fri -- 07:10 PM PST     0.55 knots Max Flood
Fri -- 09:54 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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-1.1-0.8-0.10.40.910.80.50.1-0.8-1.6-2-2-1.9-1.6-1-0.20.20.50.50.50.3-0.1-0.7

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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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