Wednesday, February19, 2020
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Marine Weather and Tides
Redwood, 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 6:52AMSunset 5:53PM Wednesday February 19, 2020 4:38 AM PST (12:38 UTC) Moonrise 4:31AMMoonset 2:16PM Illumination 18% Phase: Waning Crescent; Moon at 25 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- 237 Am Pst Wed Feb 19 2020
Today..NE winds around 5 kt, becoming W this afternoon.
Tonight..NW winds up to 10 kt.
Thu..NE winds 5 to 15 kt.
Thu night..N winds around 5 kt.
Fri..NE winds up to 10 kt.
Fri night..SW winds 10 to 20 kt with gusts up to 30 kt.
Sat..W winds 5 to 15 kt.
Sun..W winds 5 to 15 kt.
PZZ500 237 Am Pst Wed Feb 19 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light northwest winds are forecast to prevail over the waters today. A weakening cold front and upper level trough will approach the offshore waters late week that may result in a few isolated showers. A moderate northwest swell will persist through the week along with a light southerly swell.


7 Day Forecast for Marine Location Near Redwood, 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 191128 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 328 AM PST Wed Feb 19 2020

SYNOPSIS. Unseasonably mild and dry conditions are likely to persist over much of the region through the forecast period. The only chance of precipitation will be over the Central Coast Friday into Saturday with the potential for isolated showers, yet widespread rainfall is unlikely.

DISCUSSION. as of 03:05 AM PST Wednesday . The return of onshore flow along the coast during the past 12 hours or so has allowed for an increase in boundary layer moisture. As a result, low clouds and patchy fog have developed locally inland across the Sonoma Valley, along the San Francisco Peninsula and around the Monterey Bay. Expecting these clouds to continue to become more widespread along the coast and adjacent coastal valleys through the morning per trends in satellite imagery. This will keep temperatures from falling much below the lower/middle 40s while clear conditions across the interior will allow for temperatures to bottom out in the middle/upper 30s. Expecting this pattern to also allow for slightly cooler conditions near the coast this afternoon while interior locations again warm into the middle/upper 60s with a few lower 70s possible.

Not expecting much change heading into Thursday with conditions to be similar to today, night/morning low clouds near the coast and across the adjacent coastal valleys with warmer afternoon temperatures across the interior. By late week, a mid/upper level cut-off low will develop off of the northern California coast within a deepening trough. The developing mid/upper level low will then drop southward before ejecting eastward toward the southern California coast. As this occurs, moisture will wrap around the low and advect inland over portions of the Central Coast late Friday into Saturday. With this, cannot rule out isolated showers over portions interior portions of the Central Coast, mainly Monterey and San Benito Counties. However, widespread rainfall is unlikely with any precipitation being light and isolated in nature.

The aforementioned system will then exit the region this weekend as another mid/upper level trough drops into the Pacific Northwest. Forecast models have all trended much drier for our region as this system stays well to our north with ridging expected to build offshore. Thus, ongoing dry weather conditions with temperatures above seasonal averages are likely to continue heading into early next week.

AVIATION. as of 3:28 AM PST Wednesday . For 12Z TAFs. Infrared satellite imagery shows a several areas of low clouds that have developed overnight, impacting locations such as Santa Rosa, the San Mateo County Coast, and the Monterey Peninsula. Could see some additional low cloud development between now and sunrise, but not anticipating widespread. Generally light winds are expected today at the terminals.

Vicinity of KSFO . Low clouds have thus far remained on the western half of the San Bruno Gap away from the terminal. There may be some additional low cloud development between now and sunrise, but confidence is low. Light winds this morning will become west to northwest this afternoon around 10 kt.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Areas of low clouds continue to impact the Monterey Bay Area this morning with IFR ceilings reported at MRY. The stratus may expand southward into the Salinas Valley and impact SNS between now and sunrise. VFR conditions will then prevail mid/late morning and through the day. Light offshore winds this morning will become onshore later today.

MARINE. as of 3:05 AM PST Wednesday . Light northwest winds are forecast to prevail over the waters today. A weakening cold front and upper level trough will approach the offshore waters late week that may result in a few isolated showers. A moderate northwest swell will persist through the week along with a light southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. None.

PUBLIC FORECAST: RGass AVIATION: Rowe MARINE: Rowe

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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 mi50 min Calm G 0 45°F 57°F1019.1 hPa
AAMC1 - 9414750 - Alameda, CA 18 mi50 min W 5.1 G 8 50°F 56°F1018.7 hPa
LNDC1 19 mi50 min E 1.9 G 2.9 49°F 1018.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 21 mi56 min W 1 G 1.9
OBXC1 21 mi50 min 51°F 49°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 21 mi50 min WSW 2.9 G 4.1 49°F 1018.7 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi50 min WSW 2.9 G 5.1 49°F 1017.6 hPa
PXSC1 22 mi50 min 51°F 48°F
FTPC1 - 9414290 - San Francisco, CA 24 mi56 min SW 6 G 12 49°F 54°F1018.6 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi50 min S 8.9 G 9.9 51°F 1018.9 hPa
46237 - San Francisco Bar, CA (142) 29 mi38 min 53°F4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 29 mi33 min Calm 46°F 1019 hPa
RCMC1 - 9414863 - Richmond, CA 30 mi50 min S 1.9 G 2.9 50°F 54°F1018.3 hPa
UPBC1 36 mi50 min WNW 7 G 9.9
MZXC1 - 9415102 - Martinez-Amorco CA 36 mi56 min W 7 G 8 48°F 54°F1018.4 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi50 min SW 1.9 G 5.1 47°F 1018.4 hPa
PCOC1 - 9415144 - Port Chicago, CA 38 mi50 min S 6 G 8 43°F 53°F1018.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 38 mi28 min NNW 9.7 G 14 50°F 53°F1019.1 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 38 mi38 min NNW 9.7 G 16 51°F 53°F1019.2 hPa47°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 40 mi56 min WNW 7 G 11 50°F 1017.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 48 mi113 min NW 5.1

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Carlos Airport, CA3 mi43 minN 010.00 miFair43°F35°F76%1019 hPa
Hayward, Hayward Air Terminal, CA11 mi44 minN 010.00 miFair43°F36°F76%1019.6 hPa
San Francisco, San Francisco International Airport, CA11 mi42 minSSW 510.00 miA Few Clouds48°F41°F77%1018.6 hPa
Oakland, Metro Oakland International Airport, CA12 mi45 minN 010.00 miA Few Clouds44°F39°F83%1018.9 hPa
Half Moon Bay Airport, CA16 mi43 minN 09.00 miOvercast45°F41°F87%1019.3 hPa
San Jose, San Jose International Airport, CA18 mi45 minN 010.00 miFair43°F32°F65%1018.7 hPa
Livermore, Livermore Municipal Airport, CA24 mi45 minENE 310.00 miFair37°F27°F67%1018.4 hPa

Link to 5 minute data for KSQL

Wind History from SQL (wind in knots)
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Last 24hrS4S3443CalmCalmCalm33NW5NW5W10--CalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmNW3CalmCalmCalm3W8NW6NW9NW9NW6W8W5W6W63S3CalmS5S6SE8S3S4S5
2 days agoW6W6W10--W11NW11W10NW12W14W15
G17
----W15W5W4W6----CalmCalmCalmCalmCalmCalm

Tide / Current Tables for Redwood Creek entrance (inside), San Francisco Bay, California
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Redwood Creek entrance (inside)
Click for Map
Wed -- 03:43 AM PST     3.05 feet Low Tide
Wed -- 04:30 AM PST     Moonrise
Wed -- 06:53 AM PST     Sunrise
Wed -- 09:14 AM PST     8.19 feet High Tide
Wed -- 02:16 PM PST     Moonset
Wed -- 04:48 PM PST     -0.24 feet Low Tide
Wed -- 05:52 PM PST     Sunset
Wed -- 11:29 PM PST     7.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.15.143.23.13.74.86.27.58.287.15.73.92.10.8-0-0.20.31.42.94.666.9

Tide / Current Tables for Dumbarton Bridge, San Francisco Bay, California Current
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Dumbarton Bridge
Click for Map
Wed -- 01:49 AM PST     -0.51 knots Max Ebb
Wed -- 03:54 AM PST     0.00 knots Slack
Wed -- 04:30 AM PST     Moonrise
Wed -- 06:53 AM PST     Sunrise
Wed -- 07:12 AM PST     1.26 knots Max Flood
Wed -- 10:23 AM PST     -0.00 knots Slack
Wed -- 01:41 PM PST     -1.55 knots Max Ebb
Wed -- 02:16 PM PST     Moonset
Wed -- 05:02 PM PST     0.00 knots Slack
Wed -- 05:51 PM PST     Sunset
Wed -- 08:39 PM PST     1.76 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.4-0.5-0.400.61.11.31.20.90.3-0.5-1.1-1.5-1.5-1.3-0.8-00.81.41.71.71.50.9

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (7,2,3,4)
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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.