Tuesday, January28, 2020
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Marine Weather and Tides
West Menlo Park, 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 7:14AMSunset 5:28PM Monday January 27, 2020 11:14 PM PST (07:14 UTC) Moonrise 9:11AMMoonset 8:17PM Illumination 11% Phase: Waxing Crescent; Moon at 3 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 910 Pm Pst Mon Jan 27 2020
Tonight..W winds up to 10 kt.
Tue..SE winds around 5 kt.
Tue night..NW winds 5 to 15 kt.
Wed..NW winds up to 10 kt.
Wed night..W winds up to 10 kt.
Thu..W winds up to 10 kt.
Thu night..NW winds around 5 kt.
Fri..N winds around 5 kt.
Sat..N winds around 5 kt.
PZZ500 910 Pm Pst Mon Jan 27 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A cool front will move over the coastal waters and bays Tuesday with light showers. Northerly winds will develop and increase over the coastal waters Tuesday night into Wednesday steepening wind waves combining with northwest swell creating hazardous conditions for small craft. A long period northwest swell will arrive later this week.


7 Day Forecast for Marine Location Near West Menlo Park, CA
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location: 37.43, -122.23     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 280703 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1103 PM PST Mon Jan 27 2020

SYNOPSIS. Light showers are possible over the North Bay late tonight into Tuesday, and possibly a bit farther south. Dry conditions are then forecast regionwide over the remainder of the week as high pressure builds over California. Expect a warming trend from Wednesday through Saturday. Cooling will develop by Sunday.

DISCUSSION. As of 8:50 PM PST Monday . Evening IR satellite imagery shows a system pressing inland across coastal sections of the Pacific Northwest, with a trailing cold front approaching the northern California coast. Latest models indicate that light rain will reach the North Bay by late tonight (NAM), but perhaps not until around sunrise Tuesday (HRRR). Best rain chances are in the North Bay tomorrow morning, although a few light showers may develop as far south as San Mateo County by late morning. Wet roadways are a definite possibility in the North Bay during the morning commute, and perhaps as far south as San Francisco and San Mateo County by mid morning. All other areas should experience dry conditions during the morning commute. Isolated light showers may linger into the afternoon, otherwise dry conditions will round out the day.

For the remainder of the week, look for dry conditions regionwide along with a warming trend as an upper ridge builds strongly over California. H5 heights are forecast to climb as high as 587 dm by the end of the week, while 850 mb temperatures warm to about 15 degrees C. These developments will result in high temperatures that are 5 to 10 degrees warmer than average by Friday and Saturday.

From Previous Discussion . Looking out into the longer term, the CPC 6-10 day and 8-14 day outlooks show below normal precipitation for California. Additionally, the longer range GFS shows dry conditions across much of the region through early February. Ensemble QPF for both the GFS and the ECMWF show mainly dry conditions as well through at least the first week of February with only some occasional minor accumulations here and there. Overall, dry weather looks to persist across the region heading into next month.

AVIATION. as of 11:03 PM PST Monday . Cloud ceiling forecasts remain difficult for the overnight due to a transition from a weak warm front to mainly a weak cool front Tuesday. Outgoing night-time radiative cooling of the boundary layer will be slower tonight due to incoming mid to high level clouds from the northwest, however it's off to a solid start of low cloud development over the Salinas Valley to Monterey Bay. Tuesday's cool front spreads light showers from north to south during the day.

Vicinity of KSFO . VFR holding longer through the evening as sufficient drying continues to move in from the west. Lowering ceiling forecast Tuesday with cool front and light showers.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . IFR-MVFR cloud ceilings tonight and Tuesday morning, MVFR Tuesday. Isolated showers arriving Tuesday, mainly in the afternoon.

MARINE. as of 10:50 PM PST Monday . A cool front will move over the coastal waters and bays Tuesday with light showers. Northerly winds will develop and increase over the coastal waters Tuesday night into Wednesday steepening wind waves combining with northwest swell creating hazardous conditions for small craft. A long period northwest swell will arrive later this week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pigeon Pt to Pt Pinos 0-10 nm until 3 AM SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm



PUBLIC FORECAST: Dykema/AS AVIATION/MARINE: Canepa

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 5 mi74 min 53°F 56°F1029.1 hPa (-0.4)
AAMC1 - 9414750 - Alameda, CA 24 mi74 min 54°F
LNDC1 25 mi74 min 53°F 1028.9 hPa (+0.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 26 mi104 min SE 4.1 G 4.1
OBXC1 27 mi74 min 53°F 53°F
PXSC1 27 mi74 min 55°F 54°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 27 mi74 min 54°F 1027.9 hPa (+0.0)
OKXC1 - 9414776 - Oakland (Berth 34), CA 27 mi74 min 53°F 1029 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 29 mi80 min 53°F 54°F1028.9 hPa
46237 - San Francisco Bar, CA (142) 33 mi74 min 53°F9 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 34 mi69 min SSW 6 52°F 1029 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 34 mi74 min 55°F 1029.2 hPa (+0.0)
RCMC1 - 9414863 - Richmond, CA 35 mi74 min 54°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 35 mi44 min SW 5.8 G 7.8 54°F 55°F1029.1 hPa51°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 39 mi44 min S 5.8 G 7.8 54°F 54°F1029.1 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 42 mi74 min 53°F 52°F1028.6 hPa (+0.0)
UPBC1 42 mi104 min W 8.9 G 9.9
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 43 mi74 min 53°F 1028.5 hPa (+0.0)
PCOC1 - 9415144 - Port Chicago, CA 44 mi74 min 52°F 52°F1028.3 hPa (+0.0)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 45 mi44 min NW 9.7 G 14 55°F 55°F1029.2 hPa51°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 46 mi74 min 53°F 1028.1 hPa (-0.3)
46092 - MBM1 48 mi57 min NW 12 55°F 55°F1028.1 hPa (-0.3)
46114 - West Monterey Bay, CA 49 mi44 min 56°F11 ft

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palo Alto Airport, CA7 mi2.5 hrsNW 410.00 miMostly Cloudy54°F48°F82%1029.5 hPa
San Carlos Airport, CA7 mi19 minS 310.00 miFair52°F48°F88%1028.8 hPa
San Francisco, San Francisco International Airport, CA15 mi78 minS 49.00 miPartly Cloudy52°F46°F83%1028.7 hPa
Half Moon Bay Airport, CA15 mi19 minN 08.00 miA Few Clouds48°F46°F94%1029.1 hPa
San Jose, San Jose International Airport, CA16 mi21 minN 510.00 miMostly Cloudy54°F48°F83%1028.9 hPa
Hayward, Hayward Air Terminal, CA17 mi20 minN 010.00 miFair51°F46°F86%1029.4 hPa
Oakland, Metro Oakland International Airport, CA19 mi21 minSSW 310.00 miMostly Cloudy54°F48°F83%1028.6 hPa
San Jose / Reid / Hillv, CA23 mi84 minN 010.00 miMostly Cloudy54°F48°F82%1029.5 hPa

Link to 5 minute data for KSQL

Wind History from SQL (wind in knots)
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Last 24hrCalmSW4CalmCalmCalmCalmCalmCalm333443Calm3----W6W4SW4W4W3SW3
1 day agoSE3CalmCalmW8SW3NW4CalmCalmCalmW6W9W11NW12W10W11W13
G17
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2 days agoCalmCalmCalmCalmS3CalmCalmCalmCalm33NE5NE5333SW6W8NW6Calm--CalmW3E4

Tide / Current Tables for Smith Slough, San Francisco Bay, California
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Smith Slough
Click for Map
Tue -- 03:34 AM PST     7.14 feet High Tide
Tue -- 07:15 AM PST     Sunrise
Tue -- 09:26 AM PST     2.65 feet Low Tide
Tue -- 09:39 AM PST     Moonrise
Tue -- 02:29 PM PST     7.39 feet High Tide
Tue -- 05:28 PM PST     Sunset
Tue -- 09:14 PM PST     Moonset
Tue -- 09:43 PM PST     0.37 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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34.76.177.16.55.44.23.22.72.83.656.47.37.36.75.64.12.61.30.50.41.1

Tide / Current Tables for Dumbarton Hwy Bridge, South San Francisco Bay, California Current
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Dumbarton Hwy Bridge
Click for Map
Tue -- 12:37 AM PST     1.58 knots Max Flood
Tue -- 03:48 AM PST     -0.00 knots Slack
Tue -- 06:34 AM PST     -0.71 knots Max Ebb
Tue -- 07:15 AM PST     Sunrise
Tue -- 09:32 AM PST     0.00 knots Slack
Tue -- 09:39 AM PST     Moonrise
Tue -- 12:26 PM PST     1.08 knots Max Flood
Tue -- 03:05 PM PST     -0.00 knots Slack
Tue -- 05:27 PM PST     Sunset
Tue -- 06:42 PM PST     -1.12 knots Max Ebb
Tue -- 09:14 PM PST     Moonset
Tue -- 10:04 PM PST     0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.61.30.7-0.1-0.5-0.7-0.7-0.5-0.20.20.7110.70.1-0.4-0.8-1.1-1.1-0.9-0.5-00.6

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 (2,6,7,8)
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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.