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Marine Weather and Tides
Tomales, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:24AMSunset 5:16PM Friday January 15, 2021 11:54 PM PST (07:54 UTC) Moonrise 9:32AMMoonset 8:07PM Illumination 9% 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 831 Pm Pst Fri Jan 15 2021
.small craft advisory in effect through late Saturday night...
This afternoon..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 7 to 8 ft. W swell 9 to 10 ft at 14 seconds and W 5 to 7 ft at 20 seconds.
Tonight..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 7 to 8 ft. NW swell 4 to 6 ft at 14 seconds and W 8 to 10 ft at 20 seconds.
Sat..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 8 to 9 ft. SWell W 11 to 13 ft at 17 seconds.
Sat night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 8 to 9 ft. SWell W 8 to 10 ft at 15 seconds.
Sun..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 8 to 9 ft. W swell 3 to 5 ft at 22 seconds and W 5 to 7 ft at 14 seconds.
Sun night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 8 to 9 ft. W swell 9 to 11 ft at 22 seconds and W 2 to 4 ft at 14 seconds.
Martin luther king jr day..N winds 10 to 20 kt with gusts up to 25 kt. Wind waves 7 to 8 ft. W swell 8 to 10 ft.
Tue..N winds 10 to 20 kt with gusts up to 25 kt. Wind waves 5 to 6 ft. W swell 3 to 5 ft.
PZZ500 831 Pm Pst Fri Jan 15 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A new moderate west to northwest swell builds tonight resulting in hazardous seas conditions for small crafts into the weekend. Winds are moderate to locally breezy and out of the northwest across the waters through much of the weekend. Winds will shift more northerly Sunday to Sunday night and increase as offshore winds pick up over land. Stronger winds will then persist into early next week. A second larger long period northwest swell will arrive late Sunday.


7 Day Forecast for Marine Location Near Tomales, CA
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location: 38.19, -122.92     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 160533 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 933 PM PST Fri Jan 15 2021

SYNOPSIS. A warming and drying trend will continue through the upcoming weekend as high pressure builds over the state. Dry weather with breezy offshore flow is expected Sunday through the middle of next week while temperatures begin a cooling trend Tuesday.

DISCUSSION. as of 09:10 PM PST Friday . Another chamber of commerce weather day across the Bay Area and Central Coast with sunny skies and above normal temperatures. Temperatures were in the 60s and 70s with a few 80s sprinkled in there. Salinas set a new record of 84 degrees and Santa Rosa tied their old record of 70. High temperatures of this magnitude are 10-20 degrees above normal for mid January.

High pressure that brought the mild temperatures today will slowly retreat and slide southwestward the next 12 hours. As this happens, high clouds will continue to spill in from the north. The high clouds overhead tonight will limit the cooling potential in the valleys. The hills will also remain on the mild side tonight given the clouds and slight offshore flow at 2500'. Some lingering low level moisture may result in some patchy fog in the North Bay Valleys, but conf is low.

Tomorrow will be another mild day across the region as high pressure eases to the southwest a little. Temperatures may be a few cooler than Friday, but still above normal on Saturday. Temperatures will rebound on Sunday as high pressure noses northward again. Simply put, a nice weather weekend ahead.

By Sunday evening the pleasant weather will come to an end. High pressure gets shunted to the southwest again as a shortwave trough drops in from the N and moves into SoCal. This will be the initial setup for an extended period of offshore flow. One metric for offshore flow in the Bay Area is the SFO-WMC pressure gradient. As the shortwave trough passes through, the offshore gradient ramps up -12 to -14 mb depending on model choice. This is enough to generate some breezy to gusty offshore winds over the higher terrain and foothills. Winds will be strongest over the North Bay Mts and East Bay Hills. A High Wind Watch is currently in effect for Sunday evening through Monday afternoon to capture this initial push. Night shift will likely upgrade the watch to an advisory. Winds slacken a little bit on Monday afternoon, but the bigger blast of wind looks to occur Monday night and Tuesday.

As the shortwave trough exits to the south a much deeper upper low/trough dig into the Desert Southwest Monday night before ultimately becoming a cutoff low off SoCal by Wednesday. This secondary feature will really crank up the pressure gradient. The SFO-WMC gradient goes up to -19 to -22 mb! Additionally, the RDD- SAC gradient also gets up to 9 mb, which would result in stronger winds in the Central Vally and Delta region. This dramatic increase is just on today's model run so some caution should be used. However, confidence is moderate to high as other tools suggest stronger winds too. The ECMWF extreme forecast index shows the projected forecast is well above climo and several ensemble members support the outcome. The NAEFS guidance also shows a high probability of strong winds Monday night and Tuesday. Needless to say, a lot to fine tune between now and then but if models keep trending this way it could be a bigger wind event with high wind warnings needed.

AVIATION. as of 09:33 PM PST Friday . For the 06Z TAFs. Mostly VFR through the TAF period. A chance for low clouds and fog remains in the TAFs for the North Bay Valleys; however, increasing high clouds is decreasing confidence. There is a break in the clouds up near Eureka which is moving southward which with lighter cloud cover could help with radiational cooling and patchy fog. Winds continue to subside. Low clouds are forecast to scatter after 18z for VFR Saturday. Winds will increase and be breezier, especially closer to the coast before weakening Saturday night as high clouds increase.

Vicinity of KSFO . High clouds remain over the terminal, but still VFR. If the high clouds remain light, a slight chance for low clouds and reduced vis remain in the TAFs but it remains with low confidence. Winds remain light. VFR conditions expected through Saturday as onshore winds increase with a few stronger gusts before weakening Saturday night.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . A few breezier winds remain close to the coast, but conditions are expected to be VFR through the TAF period. Winds will diminish overnight before onshore and breezy Saturday afternoon.

BEACHES. as of 08:46 PM PST Friday . A moderate, long period northwest swell will arrive along the coastline today resulting in hazardous conditions in the surf zone. Initial forerunners of 3 to 6 feet at 20 to 22 seconds will result in an increased risk of dangerous sneaker waves and rip currents today. As the swell builds through tonight and into Saturday, breaking waves of 15 to 17 feet (locally up to 20 feet at favored breakpoints) can be expected along west to northwest facing beaches.

While these waves are not as large as our previous events in the most recent days, unseasonable warm temperatures this holiday weekend will likely attract more people to the coast. Individuals should be reminded that our coastline and the cold Pacific waters remain dangerous as these larger than normal waves impact the coast. Extreme caution is advised when visiting area beaches.

Additionally, a second very long period and larger west to northwest swell will arrive on Sunday. Additional hazard products will likely be needed once the current ones expire.

CLIMATE. Record Type: Highs (Old Record Temp/Year)

Jan 15th Jan 16th Jan 17th Jan 18th

Santa Rosa 70/2011 74/1991 71/1991 74/1976 Kentfield 68/2014 70/2009 71/1994 70/2014 Napa 72/2014 76/1920 72/1920 76/1920 Richmond 72/2009 74/2014 73/2009 71/2018 Livermore 75/1920 75/1920 70/1986 74/1919 San Francisco 73/2009 72/2014 73/1991 70/1920 SFO 73/2014 73/2014 70/1991 68/1948 Redwood City 78/2009* 74/2014 77/1948 74/2009 Half Moon Bay 75/2009 76/2014* 75/2009 72/2009 Oakland Downtown 76/2014 78/2014* 74/2014 73/2014 San Jose 73/2009 73/2014 76/1920 74/1920 Gilroy 73/2014 76/2014 77/2014 80/2014* Santa Cruz 83/2014 84/2014 83/2014 83/1920 Salinas Airport 83/2014 84/2014 86/2014* 81/1994 King City 82/2009 85/1976 86/2014* 83/2009

*Monthly Records

MARINE. as of 08:46 PM PST Friday . A new moderate west to northwest swell builds tonight resulting in hazardous seas conditions for small crafts into the weekend. Winds are moderate to locally breezy and out of the northwest across the waters through much of the weekend. Winds will shift more northerly Sunday to Sunday night and increase as offshore winds pick up over land. Stronger winds will then persist into early next week. A second larger long period northwest swell will arrive late Sunday.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. High Surf Advisory . CAZ006-505-509-530 SCA . Mry Bay from 3 AM SCA . Pt Reyes to Pigeon Pt 0-10 nm from 3 AM SCA . Pigeon Pt to Pt Pinos 0-10 nm from 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: MM AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 12 mi48 min 52°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 21 mi34 min NW 16 G 21 54°F 53°F1023.8 hPa53°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi34 min N 7.8 G 9.7 53°F1024.2 hPa
46237 - San Francisco Bar, CA (142) 32 mi84 min 52°F8 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 32 mi73 min WNW 4.1 57°F 1024 hPa
RCMC1 - 9414863 - Richmond, CA 33 mi54 min NW 12 G 12 57°F 53°F1023.8 hPa (-0.0)
46214 - Point Reyes, CA (029) 34 mi58 min 54°F10 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 35 mi54 min NNW 12 G 14 57°F 1024.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 36 mi54 min N 2.9 G 5.1 56°F 1023.8 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 36 mi54 min S 1.9 G 2.9 55°F 54°F1024.1 hPa (-0.0)
CQUC1 38 mi65 min 52°F
PXSC1 39 mi54 min 58°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 39 mi54 min WNW 2.9 G 2.9 57°F 1022.9 hPa (-0.0)
OBXC1 41 mi54 min 56°F 53°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 41 mi54 min NNW 6 G 6
OKXC1 - 9414776 - Oakland (Berth 34), CA 41 mi54 min NNW 5.1 G 5.1 54°F 1023.8 hPa (-0.0)
MZXC1 - 9415102 - Martinez-Amorco CA 43 mi54 min NE 2.9 G 2.9 54°F 52°F1024.1 hPa (-0.5)
LNDC1 43 mi54 min N 2.9 G 5.1 56°F 1023.6 hPa (-0.4)
AAMC1 - 9414750 - Alameda, CA 44 mi54 min N 4.1 G 6 56°F 53°F1023.9 hPa (-0.4)
UPBC1 44 mi54 min SSE 2.9 G 4.1
SFXC1 - San Francisco Bay Reserve, CA 47 mi69 min NW 1.9 49°F 1024 hPa47°F
PCOC1 - 9415144 - Port Chicago, CA 48 mi54 min WNW 1.9 G 2.9 53°F 52°F1023.9 hPa (-0.3)

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA20 mi79 minSSW 310.00 miFair52°F50°F94%1024.4 hPa
Santa Rosa, Santa Rosa Sonoma County Airport, CA23 mi61 minN 010.00 miFair52°F51°F97%1023.8 hPa

Link to 5 minute data for KO69

Wind History from O69 (wind in knots)
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Last 24hr34CalmCalm--CalmCalmCalmCalm------------CalmCalmCalmN3CalmN3CalmCalmSW3
1 day ago--------------------SW15SW10
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------------Calm
2 days ago------------------------------------------------

Tide / Current Tables for Blakes Landing, Tomales Bay, California
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Blakes Landing
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Sat -- 03:00 AM PST     4.49 feet High Tide
Sat -- 07:26 AM PST     Sunrise
Sat -- 08:39 AM PST     2.17 feet Low Tide
Sat -- 10:02 AM PST     Moonrise
Sat -- 01:45 PM PST     4.93 feet High Tide
Sat -- 05:17 PM PST     Sunset
Sat -- 09:06 PM PST     -0.16 feet Low Tide
Sat -- 09:10 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.33.44.24.54.33.83.22.62.22.22.63.34.14.84.94.63.92.91.80.80.1-0.20.10.8

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sat -- 02:50 AM PST     -0.00 knots Slack
Sat -- 05:06 AM PST     -0.70 knots Max Ebb
Sat -- 07:26 AM PST     Sunrise
Sat -- 08:29 AM PST     0.00 knots Slack
Sat -- 10:02 AM PST     Moonrise
Sat -- 11:11 AM PST     0.71 knots Max Flood
Sat -- 01:58 PM PST     -0.00 knots Slack
Sat -- 05:11 PM PST     -1.27 knots Max Ebb
Sat -- 05:18 PM PST     Sunset
Sat -- 09:08 PM PST     0.00 knots Slack
Sat -- 09:10 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.90.5-0.1-0.5-0.7-0.6-0.4-0.20.20.50.70.60.4-0-0.5-1-1.3-1.2-0.9-0.6-0.10.40.8

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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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.