Saturday, March28, 2020
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Marine Weather and Tides
Roseland, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:59AMSunset 7:32PM Saturday March 28, 2020 5:32 PM PDT (00:32 UTC) Moonrise 8:27AMMoonset 10:46PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 200 Pm Pdt Sat Mar 28 2020
Today..W winds up to 10 kt, becoming sw this afternoon. Wind waves 1 ft. W swell 2 to 3 ft at 7 seconds. SWell sw up to 2 ft. Rain.
Tonight..SW winds 5 to 10 kt. Wind waves 1 ft. W swell 3 to 5 ft at 8 seconds. Rain likely.
Sun..SW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell 4 to 6 ft at 7 seconds. Rain likely.
Sun night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell 3 to 5 ft at 8 seconds.
Mon..W winds 5 to 10 kt. Wind waves 1 ft. W swell 3 to 5 ft at 9 seconds.
Mon night..NW winds 5 to 10 kt. Wind waves 1 ft. W swell 4 to 5 ft at 10 seconds.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft.
Wed..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 8 to 10 ft.
PZZ500 200 Pm Pdt Sat Mar 28 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds will persist through the rest of the weekend and into early next week as high pressure moves into the southern california waters and a weak boundary approaches from offshore of the pacific northwest. Mixed swell will continue with a moderate northwest swell and a light southwesterly swell.


7 Day Forecast for Marine Location Near Roseland, CA
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location: 38.43, -122.71     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 282348 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 448 PM PDT Sat Mar 28 2020

SYNOPSIS. Scattered showers this afternoon and evening for the Bay Area. A cold front will pass through the area Sunday morning with another round of rainfall lasting through early Sunday afternoon. The low moves east and dry conditions return Sunday night into Monday morning. A weak weather system may bring some light rain to northern Sonoma county Monday otherwise dry high pressure will start to build. The long range forecst calls for dry weather next week with a gradual warming trend back into the upper 60s and 70s.

DISCUSSION. as of 2:00 PM PDT Saturday . Some scattered light rain showers continue across the region this afternoon as daytime heating interacts with abundant moisture and marginal instability. Look for scattered showers through this evening. More weak showers are offshore and will move onshore this evening as well. Satellite shows core of weak upper low out near 39n/129w. As this feature and surface low move onshore Sunday morning there will be an organized band of rain moving through the Bay Area. Rain amounts still look light overall but some brief heavy downpours will accompany the frontal passage Sunday morning through midday or so before precip turns showery once again. Rain totals on average of 0.10-0.25 for valleys with 0.25-0.50 coast and hills (little or no rain interior Monterey/San Benito).

Dry Sunday night but with lingering clouds and enough boundary layer moisture for valley fog to form.

NAM model is insisting that some more light warm advection rains will occur across northern Sonoma Monday afternoon with any precip very light (tenth or less) while the rest of the region dries out.

High pressure builds behind that front Tuesday through next weekend with a noted warming and drying trend and even some possible dry north winds Weds night. Afternoon highs should warm nicely back into the upper 60s to upper 70s away from the coast. Above average confidence for dry conditions through the first weekend in April but some hints that some storms may try and undercut the ridge by around April 6-10th.

AVIATION. as of 4:48 PM PDT Saturday . For 00z tafs. Occasional showers and VFR to MVFR tonight and Sunday morning. VFR returning by early Sunday afternoon.

Vicinity of KSFO . VFR occasionally MVFR tonight, VFR Sunday afternoon and evening. Showers tonight and Sunday.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR occasionally MVFR tonight, VFR Sunday afternoon and evening. Showers tonight and Sunday.

MARINE. as of 4:33 PM PDT Saturday . Generally light winds will persist through the rest of the weekend and into early next week as high pressure moves into the southern California waters and a weak boundary approaches from offshore of the Pacific Northwest. Mixed swell will continue with a moderate northwest swell and a light southwesterly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. None.

PUBLIC FORECAST: RWW AVIATION: Canepa MARINE: AS

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 34 mi33 min SSW 7.8 G 9.7 54°F1021.1 hPa (-1.5)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 35 mi45 min W 8 G 12 56°F 1020.6 hPa
RCMC1 - 9414863 - Richmond, CA 38 mi45 min WSW 6 G 8.9 55°F 57°F1020.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi53 min Calm 55°F 1021 hPa
SFXC1 - San Francisco Bay Reserve, CA 40 mi108 min SW 6
PPXC1 - 9414847 - Richmond (Point Potrero), CA 41 mi45 min SW 9.9 G 13 56°F 1021.3 hPa
UPBC1 41 mi45 min W 9.9 G 14
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi45 min WSW 8.9 G 12 56°F 57°F1020.7 hPa
PCOC1 - 9415144 - Port Chicago, CA 44 mi45 min SE 4.1 G 7 54°F 58°F1020.5 hPa
FTPC1 - 9414290 - San Francisco, CA 45 mi45 min 58°F
46237 - San Francisco Bar, CA (142) 45 mi63 min 56°F3 ft
PXSC1 46 mi45 min 57°F 49°F
OBXC1 47 mi45 min 55°F 48°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi45 min SSW 4.1 G 7 55°F 1021.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 47 mi33 min SW 7.8 G 12 54°F 55°F1021.7 hPa (-1.3)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 47 mi45 min WSW 6 G 12 55°F 1020.2 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 48 mi51 min SW 2.9 G 4.1
LNDC1 49 mi45 min WSW 6 G 8.9 55°F 1021 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA8 mi40 minSW 510.00 miOvercast55°F46°F72%1019.9 hPa
Petaluma Municipal Airport, CA13 mi38 minW 610.00 miOvercast55°F48°F77%1021 hPa
Novato / Gnoss Field, CA21 mi58 minSSE 310.00 miOvercast54°F50°F88%1021 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrW12SW4S4S4S6CalmCalmCalmCalmNW3CalmCalmW3CalmNW3CalmCalmCalmCalmS44CalmCalmSW5
1 day agoW9W8CalmW3W3NW3CalmS3CalmCalmCalmCalmCalmCalmS3CalmS3CalmS4SE4--SW8SW8W11
2 days agoW10
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E10S4CalmCalmCalmSE3S3CalmCalmCalmCalmCalmCalmCalmCalmN7NW4S5NW53W7W11W11
G15

Tide / Current Tables for Upper drawbridge, Petaluma River, San Pablo Bay, California
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Upper drawbridge
Click for Map
Sat -- 04:29 AM PDT     6.19 feet High Tide
Sat -- 07:00 AM PDT     Sunrise
Sat -- 09:27 AM PDT     Moonrise
Sat -- 11:55 AM PDT     0.43 feet Low Tide
Sat -- 05:45 PM PDT     4.77 feet High Tide
Sat -- 07:30 PM PDT     Sunset
Sat -- 11:42 PM PDT     1.90 feet Low Tide
Sat -- 11:45 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.82.84.15.36.16.15.74.83.62.31.30.60.40.91.82.93.94.64.84.53.93.12.42

Tide / Current Tables for Lakeville, Petaluma River, San Pablo Bay, California
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Lakeville
Click for Map
Sat -- 04:18 AM PDT     5.93 feet High Tide
Sat -- 07:00 AM PDT     Sunrise
Sat -- 09:26 AM PDT     Moonrise
Sat -- 11:35 AM PDT     0.43 feet Low Tide
Sat -- 05:34 PM PDT     4.57 feet High Tide
Sat -- 07:30 PM PDT     Sunset
Sat -- 11:22 PM PDT     1.90 feet Low Tide
Sat -- 11:45 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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234.25.35.95.85.34.33.11.910.50.51.1233.94.54.54.23.62.92.21.9

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (20,4,5,8)
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Ground Weather Radar Station Sacramento, CA
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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.