Saturday, January25, 2020
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Marine Weather and Tides
Tomales, 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 7:19AMSunset 5:26PM Saturday January 25, 2020 5:23 AM PST (13:23 UTC) Moonrise 8:09AMMoonset 6:21PM Illumination 0% Phase: New Moon; Moon at 0 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- 210 Am Pst Sat Jan 25 2020
.small craft advisory in effect through this afternoon...
Today..SE winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 9 to 11 ft at 16 seconds. Showers.
Tonight..S winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft at 15 seconds and W up to 2 ft at 21 seconds. Showers.
Sun..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 5 to 7 ft at 13 seconds and W 6 to 8 ft at 19 seconds. A slight chance of showers.
Sun night..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 9 to 11 ft at 16 seconds and W 3 to 5 ft at 20 seconds.
Mon..SW winds up to 10 kt. Wind waves 1 ft. W swell 11 to 13 ft at 17 seconds.
Mon night..SW winds 5 to 10 kt. Wind waves 1 to 2 ft. W swell 10 to 12 ft at 16 seconds. A chance of showers.
Tue..NW winds up to 10 kt. Wind waves 1 ft. W swell 9 to 11 ft. A chance of showers.
Wed..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft.
PZZ500 210 Am Pst Sat Jan 25 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light split flow winds through the early afternoon, with increasing southerly winds in the northern waters and weakening northerly winds in the southern waters. Winds shift to become south to southwest across the waters by this evening ahead of a surface frontal boundary before shifting to become northerly by Sunday morning. A long period west to northwest swell will continue to impact the waters through Saturday. This will create conditions hazardous to small crafts. Additional long period northwest swells will arrive this weekend and early next week.


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 251205 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 405 AM PST Sat Jan 25 2020

SYNOPSIS. Some patchy dense valley fog this morning otherwise increasing clouds through the day as a warm front approaches. Light rain will develop in the North Bay late this afternoon into this evening. Then a cold front will pass through the Bay Area overnight with some light rain into early Sunday morning. Dry weather returns midday Sunday into Monday. Another weak front by Tuesday brings more light rain chances to the North Bay but dry from the Golden Gate southward. Long range trends look seasonably warm and dry as high pressure builds.

DISCUSSION. as of 2:21 AM PST Saturday . Short term concern this morning will be areas of dense fog through sunrise. Salinas already down to 1/4 mile fog in the Salinas Valley with Santa Rosa at 3/4 mile in the North Bay. Dewpoints remain high in the upper 40s and lower 50s keeping the airmass pretty juicy. Synoptic pattern features a weak warm front approaching today. Buoys are reporting some light southerly winds with IR satellite showing increasing mid and high clouds this afternoon. This will eventually lead to some light rain across the North Bay late this afternoon and evening as warm front moves onshore. Light rain chances spread towards the Golden Gate this evening but rain remains light and spotty. Overnight a cold front will then pass over the region, keeping rain chances going in the North Bay with scattered light rain throughout the Bay Area overnight. Rain chances from San Jose southward to the Central Coast look slight with any amounts being very light around sunrise Sunday as the cold front passes through.

After a cool and damp start Sunday morning, by midday nice weather returns as high pressure builds with highs back into the mid 50s and lower 60s. Forecast for Monday is dry with near normal highs after valley fog in the morning.

Another weak front may skirt the North Bay to the Golden Gate Tuesday with some light rain chances.

Strong high pressure builds from midweek and beyond with plenty of sunshine and highs likely peaking in the mid 60s with even some 70s for the Central Coast. Current models keep mild and dry weather into next weekend with some hint of a colder (but dry) trough by around Feb 3rd.

AVIATION. as of 04:00 AM PST Saturday . For 12Z TAFs. Weak surface boundaries will interact with the region over the course of the TAF period, primarily impacting terminals by bringing periods of LIFR-MVFR cigs/visbys and brief VCSH/-SHRA while winds will be generally light (ie less than 10 kt). Early morning night time microphysics satellite imagery shows pockets of dense fog (ie 1/4sm + VV002) at KSNS and a rather low cloud deck in the Bay Area (cigs at 400-600 feet at KSTS/KSFO/KSJC). Fog bank evident near KMRY as well but a brief period of southerly winds advected the fog bank northward into the Marina area, however, winds have turned light and fog/vcfg may return to KMRY by sunrise hours . similar to yesterday morning. Poor conditions with abundant low to mid level moisture will persist in the North Bay while improving conditions with lifting/scattered cloud decks will occur southward. Another round of poor overnight cigs/visbys will occur tonight with a slight chance of very light showers through the night with the next air mass boundary.

Vicinity of KSFO . Expanding low clouds near KSFO at or around 300-500 feet, however, deck is not robust and shifting winds are pushing these clouds in and out of the vicinity of the terminal, so expect evolving conditions through the morning with reductions and visibility accompanying the low clouds. Models prog improving conditions by very late morning to early afternoon, however, there is a small chance models are overconfident and clouds linger throughout the day (though not as thick as this morning). Low clouds and reduced visbys will then reform by the late afternoon to early evening with the next boundary. Highest chance of showers looks to be around 09-14Z tomorrow night, though, they will be weak. Winds generally light SE ahead of air mass boundaries but could see it shift westerly during the afternoon.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Very similar scenario as yesterday morning where low clouds/fog formed near KMRY but were blown out of the terminal vicinity by weak S/SE winds. Meanwhile, a more robust fog bank develops throughout the Salinas valley (incl at KSNS) and into the Marina/Castroville area of the Monterey Bay. Expect to see very poor conditions at KSNS persist while KMRY will should remain in mostly clear (with vicinity fog) as long as the light S/SE winds persist. KMRY may fill back in if winds cut off. Clouds lift/thin by mid to late morning though should see lingering FEW/SCT cloud decks in the 3000-5000 ft range as low to mid level moisture remains abundant. An earlier return of IFR or less cigs is possible by 00-02Z at the terminals ahead of the next boundary.

MARINE. as of 03:48 AM PST Saturday . Light split flow winds through the early afternoon, with increasing southerly winds in the northern waters and weakening northerly winds in the southern waters. Winds shift to become south to southwest across the waters by this evening ahead of a surface frontal boundary before shifting to become northerly by Sunday morning. A long period west to northwest swell will continue to impact the waters through Saturday. This will create conditions hazardous to small crafts. Additional long period northwest swells will arrive this weekend and early next week.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Mry Bay until 3 PM SCA . Pt Arena to Pt Reyes 0-10 nm until 3 PM SCA . Pt Reyes to Pigeon Pt 0-10 nm until 3 PM SCA . Pigeon Pt to Pt Pinos 0-10 nm until 3 PM SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm until 3 PM SCA . Pt Arena to Pigeon Pt 10-60 nm until 3 PM SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm until 3 PM



PUBLIC FORECAST: RWW AVIATION: DRP MARINE: DRP

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRYC1 - 9415020 - Point Reyes, CA 14 mi54 min 53°F1020 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 21 mi24 min SSE 9.7 G 14 54°F1020.6 hPa (-0.6)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi24 min SE 5.8 G 9.7 54°F 54°F1020.8 hPa (-1.1)
46237 - San Francisco Bar, CA (142) 32 mi54 min 53°F9 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 32 mi43 min Calm 52°F 1021 hPa
RCMC1 - 9414863 - Richmond, CA 33 mi54 min Calm G 1.9 53°F 53°F1020.3 hPa
46214 - Point Reyes, CA (029) 34 mi24 min 55°F11 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 35 mi60 min W 2.9 G 4.1 54°F 1020.9 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 36 mi60 min E 7 G 8.9 54°F 1020.2 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi54 min Calm G 1 53°F 53°F1020.8 hPa
PXSC1 39 mi54 min 55°F 55°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 39 mi54 min SSE 5.1 G 6 54°F 1019.8 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 41 mi54 min SSW 2.9 G 4.1 54°F 1020.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 41 mi54 min S 2.9 G 2.9
OBXC1 41 mi54 min 54°F 54°F
MZXC1 - 9415102 - Martinez-Amorco CA 43 mi54 min E 2.9 G 6 52°F 51°F1020.5 hPa
LNDC1 43 mi54 min S 1.9 G 4.1 54°F 1020.5 hPa
AAMC1 - 9414750 - Alameda, CA 44 mi54 min E 1 G 4.1 53°F 53°F1020.6 hPa
UPBC1 44 mi60 min ESE 8 G 9.9
SFXC1 - San Francisco Bay Reserve, CA 47 mi99 min E 1
PCOC1 - 9415144 - Port Chicago, CA 48 mi54 min E 7 G 8 52°F 50°F1020 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petaluma Municipal Airport, CA17 mi49 minSSE 65.00 miFog/Mist54°F53°F100%1020.7 hPa
Novato / Gnoss Field, CA20 mi49 minN 00.50 miFog54°F53°F100%1020.7 hPa
Santa Rosa, Santa Rosa Sonoma County Airport, CA23 mi31 minN 00.75 miFog/Mist53°F53°F100%1019.8 hPa

Link to 5 minute data for KO69

Wind History from O69 (wind in knots)
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Last 24hrCalmCalmW4CalmCalmCalmCalmNW44W5NW3W5CalmCalm------CalmCalmCalmCalmCalmSE4SE6
1 day agoCalmCalmCalmCalmCalmCalmCalmSE3SE5SE6SE5SE3SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmNW3CalmCalmCalmW5CalmSW3CalmCalmS3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Blakes Landing, Tomales Bay, California
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Blakes Landing
Click for Map
Sat -- 01:16 AM PST     4.36 feet High Tide
Sat -- 06:35 AM PST     2.25 feet Low Tide
Sat -- 07:21 AM PST     Sunrise
Sat -- 08:08 AM PST     Moonrise
Sat -- 11:49 AM PST     5.38 feet High Tide
Sat -- 05:26 PM PST     Sunset
Sat -- 06:22 PM PST     Moonset
Sat -- 07:17 PM PST     -0.47 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.94.34.33.83.22.72.32.32.83.64.45.25.45.14.33.21.90.7-0.1-0.4-0.30.31.32.4

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sat -- 12:54 AM PST     -0.00 knots Slack
Sat -- 03:08 AM PST     -0.65 knots Max Ebb
Sat -- 06:20 AM PST     0.00 knots Slack
Sat -- 07:21 AM PST     Sunrise
Sat -- 08:08 AM PST     Moonrise
Sat -- 09:08 AM PST     0.80 knots Max Flood
Sat -- 11:55 AM PST     -0.00 knots Slack
Sat -- 03:11 PM PST     -1.43 knots Max Ebb
Sat -- 05:27 PM PST     Sunset
Sat -- 06:23 PM PST     Moonset
Sat -- 07:12 PM PST     0.00 knots Slack
Sat -- 10:16 PM PST     1.09 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.5-0.1-0.5-0.6-0.6-0.4-0.10.30.60.80.70.4-0-0.7-1.2-1.4-1.3-1.1-0.7-0.10.50.91.11

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 (8,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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