Saturday, March28, 2020
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Marine Weather and Tides
Redwood City, 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 6:57AMSunset 7:29PM Saturday March 28, 2020 4:06 PM PDT (23:06 UTC) Moonrise 8:27AMMoonset 10:42PM Illumination 23% 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 200 Pm Pdt Sat Mar 28 2020
Today..SW winds around 5 kt, increasing to 5 to 15 kt this afternoon. Rain.
Tonight..SW winds 5 to 10 kt. Rain.
Sun..S winds 5 to 15 kt. Rain.
Sun night..W winds 5 to 15 kt.
Mon..W winds 5 to 10 kt.
Mon night..W winds 5 to 10 kt.
Tue..NW winds 5 to 10 kt.
Wed..NW winds up to 10 kt.
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 Redwood City, CA
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location: 37.52, -122.2     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 282100 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 200 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 10:31 AM PDT Saturday . For 18z tafs. Radar is still picking up scattered showers across the region. Expect periods of showers to continue on and off throughout the day before another round of more steady precipitation arrives with a secondary boundary tomorrow morning. Borderline MVFR/VFR cigs expected today with current observations showing layers of SCT to BKN cigs between 2,000 and 7,000 ft AGL. S/SE winds expected this morning to remain generally under 10 kt, through short durations at or just above 10 kt will be possible. Latest guidance this morning has backed off on winds shifting to the SW/W this afternoon for some sites. S/SE winds may persist through tomorrow morning for those locations.

Vicinity of KSFO . Light scattered showers on and off throughout the day with borderline MVFR/VFR cigs. Current obs show BKN cigs between 3,500 and 5,000 ft. Periods of MVFR cigs will be possible today, though confidence is low on exact timing and duration. S/SE winds to persist today with winds now expected to increase to 10 kt this afternoon. Latest guidance has backed off on a transition to SW/W winds later today, but should conditions change the taf will be amended. Additional round of more steady showers expected tomorrow morning as a secondary boundary moves through.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR with periods of MVFR conditions and showers this afternoon. MVFR conditions expected this evening and overnight. Additional round of steady showers tomorrow morning. S/SE winds 5-10 kt this morning becoming W/SW in the afternoon. SE winds to return this evening and become locally breezy down the Salinas Valley in the morning.

MARINE. as of 01:39 PM PDT Saturday . High pressure will shift into the southern California waters as a low pressure system moves into waters off the coast of the Pacific Northwest. This will keep winds generally light through the weekend and into early next week. Mixed swell will persist with a moderate northwest swell and a light southwesterly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. None.

PUBLIC FORECAST: RWW AVIATION: AS MARINE: AS

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 1 mi48 min E 4.1 G 7 56°F 58°F1021.8 hPa
AAMC1 - 9414750 - Alameda, CA 18 mi48 min SSW 1 G 1.9 55°F 57°F1021.5 hPa
LNDC1 19 mi48 min Calm G 1.9 55°F 1021.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 21 mi54 min NNW 1.9 G 2.9
OBXC1 21 mi48 min 54°F 49°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 21 mi48 min N 1.9 G 2.9 54°F 1021.6 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi48 min N 1.9 G 4.1 53°F 1020.6 hPa
PXSC1 22 mi48 min 55°F 50°F
FTPC1 - 9414290 - San Francisco, CA 24 mi48 min 58°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi48 min S 7 G 8.9 55°F 1021.8 hPa
46237 - San Francisco Bar, CA (142) 29 mi36 min 56°F3 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 29 mi32 min SSW 4.1 55°F 1021 hPa
RCMC1 - 9414863 - Richmond, CA 30 mi48 min SW 5.1 G 7 56°F 57°F1021.2 hPa
UPBC1 36 mi48 min WNW 6 G 8.9
MZXC1 - 9415102 - Martinez-Amorco CA 36 mi48 min W 6 G 8 56°F 57°F1021.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi48 min W 8 G 11 56°F 1021.1 hPa
PCOC1 - 9415144 - Port Chicago, CA 38 mi48 min E 1.9 G 2.9 56°F 58°F1020.9 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 38 mi26 min SW 7.8 G 12 54°F 55°F1022 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 38 mi26 min WSW 9.7 G 14 53°F 56°F1022 hPa49°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 40 mi54 min Calm G 1 55°F 1021.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 48 mi81 min WSW 7

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Carlos Airport, CA3 mi79 minVar 310.00 miOvercast57°F48°F72%1022 hPa
Palo Alto Airport, CA5 mi79 minE 510.00 miMostly Cloudy57°F46°F67%1022 hPa
Hayward, Hayward Air Terminal, CA11 mi72 minW 510.00 miOvercast58°F44°F60%1022.6 hPa
San Francisco, San Francisco International Airport, CA11 mi70 minNE 410.00 miOvercast55°F46°F74%1021.5 hPa
Oakland, Metro Oakland International Airport, CA12 mi73 minSW 510.00 miOvercast60°F46°F60%1021.8 hPa
Half Moon Bay Airport, CA16 mi66 minSW 58.00 miOvercast55°F48°F77%1022.3 hPa
San Jose, San Jose International Airport, CA18 mi73 minN 09.00 miMostly Cloudy56°F45°F67%1021.5 hPa
Livermore, Livermore Municipal Airport, CA24 mi73 minN 010.00 miOvercast54°F46°F75%1021.2 hPa
San Jose / Reid / Hillv, CA24 mi79 minN 010.00 miOvercast57°F44°F63%1022 hPa

Link to 5 minute data for KSQL

Wind History from SQL (wind in knots)
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Last 24hrSW10SW10W8SW6S4SW3CalmS3CalmCalmCalmS3S4S3S3SE3SE3CalmE3E5NE333SW7
1 day ago--W10W12
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2 days agoW15W15W13
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W7SW7W3W4W4CalmCalmW5CalmN3CalmSE4CalmCalmCalmCalmN4N8NW10N10NW9

Tide / Current Tables for Redwood Creek entrance (inside), San Francisco Bay, California
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Redwood Creek entrance (inside)
Click for Map
Sat -- 03:25 AM PDT     7.44 feet High Tide
Sat -- 06:59 AM PDT     Sunrise
Sat -- 09:26 AM PDT     Moonrise
Sat -- 10:23 AM PDT     0.63 feet Low Tide
Sat -- 04:41 PM PDT     6.21 feet High Tide
Sat -- 07:28 PM PDT     Sunset
Sat -- 10:10 PM PDT     2.45 feet Low Tide
Sat -- 11:42 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.95.36.67.47.36.75.43.92.41.20.70.81.62.94.25.36.16.25.74.83.72.82.52.7

Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
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Dumbarton Bridge
Click for Map
Sat -- 01:20 AM PDT     1.25 knots Max Flood
Sat -- 04:38 AM PDT     -0.00 knots Slack
Sat -- 06:58 AM PDT     Sunrise
Sat -- 07:35 AM PDT     -1.20 knots Max Ebb
Sat -- 09:26 AM PDT     Moonrise
Sat -- 10:41 AM PDT     0.00 knots Slack
Sat -- 02:04 PM PDT     1.37 knots Max Flood
Sat -- 06:07 PM PDT     -0.00 knots Slack
Sat -- 07:28 PM PDT     Sunset
Sat -- 08:03 PM PDT     -0.57 knots Max Ebb
Sat -- 10:13 PM PDT     0.00 knots Slack
Sat -- 11:42 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.21.20.80.3-0.2-0.7-1.1-1.2-0.8-0.40.20.71.21.41.20.90.50.1-0.4-0.6-0.4-0.10.3

Weather Map
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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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (19,4,5,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.