Tuesday, December10, 2019
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Marine Weather and Tides
Montalvin Manor, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:12AMSunset 4:51PM Monday December 9, 2019 9:06 PM PST (05:06 UTC) Moonrise 3:29PMMoonset 4:31AM Illumination 97% Phase: Waxing Gibbous; Moon at 13 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- 836 Pm Pst Mon Dec 9 2019
Tonight..SW winds up to 10 kt. Patchy fog after midnight.
Tue..E winds up to 10 kt. Patchy fog. A chance of rain.
Tue night..E winds up to 10 kt. A chance of rain.
Wed..NE winds 5 to 15 kt. A slight chance of rain.
Wed night..E winds up to 10 kt.
Thu..S winds 5 to 15 kt.
Thu night..SW winds around 5 kt.
Fri..W winds up to 10 kt.
Sat..W winds 5 to 15 kt. A chance of rain.
PZZ500 836 Pm Pst Mon Dec 9 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will continue to be light over the coastal waters tonight and into Tuesday morning. Patchy fog is possible Tuesday morning. A weak system approaches from the northwest moving toward san francisco Tuesday night, bringing a chance of showers in the evening and into Wednesday while winds turn southerly. The moderate northwest swell will continue through the end of the week before a larger and longer period northwest swell arrives closer to the weekend.


7 Day Forecast for Marine Location Near Montalvin Manor, CA
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location: 38.06, -122.39     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 100236 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 636 PM PST Mon Dec 9 2019

SYNOPSIS. Dry conditions with mild temperatures are forecast through Tuesday afternoon. Patchy dense fog is likely during the night and morning hours. A weak weather system may produce light rain from late Tuesday into early Wednesday. Dry conditions are then forecast for most of the second half of the work week before rain chances increase by Friday night or Saturday.

DISCUSSION. as of 12:55 PM PST Monday . Fog blanketed a good portion of the San Francisco Bay Area and parts of the central California coast this morning. Many airports throughout the region reported visibilities down to 1/4 mile or less. By mid-morning, the severity of the fog had gradually improved, allowing for the Dense Fog Advisory to expire as scheduled at 10 AM PST. With that said, though, as of mid-day overcast skies and locally-reduced visibilities are still being observed. Some locations may never clear this afternoon. With the high-amplitude upper level ridge over our area, will likely see a repeat overnight tonight and into Tuesday morning with fog impacting the area valleys and locations near sea level. Will monitor visibility trends closely and let the evening or night shift make the determination about any new Dense Fog Advisories.

The upper level ridge will quickly push eastward into the North American continent during the day on Tuesday. A fast-moving shortwave trough will then approach the California coast late Tuesday and into Wednesday. The precipitation associated with this shortwave will be light. Best potential for more than a few tenths of an inch of rain will be in the North Bay. The latest 3-km NAM brings around a tenth to a quarter of an inch to San Francisco and the East Bay with lesser amounts in the Santa Clara Valley. The timing of this rain looks to fall in the middle to late evening hours on Tuesday, wrapping up early to middle morning Wednesday. Some locations in Monterey and San Benito County will likely remain dry. Overall, low impacts are anticipated.

A broad, flat upper level ridge in the eastern Pacific between 20 and 30 degrees north latitude will largely push the core storm track to our north from the middle of the week onward. Models advertise a strong system to impact the Pacific Northwest and British Columbia late Wednesday and into Thursday. The North Bay will be on the far southern end of this system with the potential for light rain on Thursday or Friday. Little rainfall (if any) is expected south of the Golden Gate based on the latest guidance. Again, little or no weather-related impacts anticipated in our area.

And behind the late week system comes another shortwave trough over the weekend. Models have backed off a bit over the past several model runs in terms of rainfall totals, indicating a few or several tenths of an inch of rain. If the forecast plans out, little or no weather-related impacts are expected this this system as well.

Looking ahead to late this weekend and into early next week, both the GFS and ECMWF bring a ridge back to the West Coast. While this week from a synoptic meteorological aspect is rather active, the overall rain impacts from the series of successive systems will likely remain low for the San Francisco Bay Area.

AVIATION. as of 3:58 PM PST Monday . For 00z TAFs. Stratus clouds have already moved into the coastal parts of the North Bay and coastal San Francisco while they currently are still out to sea near Monterey Bay. Expect mid level clouds through the evening with reductions to vis and cigs tonight and into the early part of tomorrow morning. Fog is forecast for many terminals around the Bay Area with impacts to vis providing IFR and even LIFR conditions possible. Winds remain generally light. Clouds should scatter out by midday on Tuesday.

Vicinity of KSFO . VFR to MVFR conditions at 00z with stratus clouds currently looming at mid-levels with light winds. Those light winds will prevail through the night. However, vis and low cigs are of concern in the early morning hours. Fog is not in the KSFO TAF currently given the lack of fog at the terminal yesterday morning, despite many other Bay Area terminals experiencing it. By about 20z, clouds should scatter out and allow for VFR conditions once again with light winds. Chances of rain are in the forecast for Tuesday night.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Mostly VFR conditions around 00z for the MRY Bay terminals. But low clouds are expected to return this evening. Winds will swing around to the southeast and remain light. Cigs and vis reduce through the night with fog expected to impact terminals in the early morning hours. Most clouds should scatter out by 20z and winds remain out of the south-southeast.

MARINE. as of 03:45 PM PST Monday . Light winds are forecast to prevail over the coastal waters tonight and into Tuesday. Areas of fog will likely develop overnight and into Tuesday. A weak system will then move through the region early this week bringing a chance of showers Tuesday night into Wednesday while winds turn southerly. Moderate northwest swell will persist through much of the week before a larger and longer period northwest swell arrives late this week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. None.

PUBLIC FORECAST: Rowe AVIATION: DK MARINE: CW/AS

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 7 mi48 min NW 4.1 G 6 53°F 1023.1 hPa
RCMC1 - 9414863 - Richmond, CA 10 mi54 min N 1.9 G 5.1 54°F 55°F1023 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 11 mi48 min N 4.1 G 6 55°F 1023.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi55 min Calm 53°F 1024 hPa (+1.0)
UPBC1 14 mi48 min WNW 7 G 8.9
MZXC1 - 9415102 - Martinez-Amorco CA 14 mi54 min W 6 G 7 53°F 54°F1023.3 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 17 mi48 min WNW 7 G 8 54°F 1023.4 hPa
FTPC1 - 9414290 - San Francisco, CA 18 mi54 min WNW 4.1 G 6 54°F 54°F1023.7 hPa
OBXC1 18 mi48 min 54°F 51°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 18 mi48 min W 6 G 8.9 54°F 1022.4 hPa
PCOC1 - 9415144 - Port Chicago, CA 19 mi48 min WSW 7 G 8 51°F 53°F1022.9 hPa
LNDC1 19 mi48 min W 2.9 G 6 55°F 1023.3 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi54 min Calm G 0 54°F 55°F1023.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 22 mi81 min W 4.1 46°F 1023 hPa46°F
46237 - San Francisco Bar, CA (142) 23 mi36 min 54°F3 ft
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 27 mi54 min W 4.1 G 6 53°F 1022.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 31 mi48 min 54°F1023.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 32 mi26 min NNW 5.8 G 9.7 54°F 56°F1023.9 hPa
RTYC1 - 9414523 - Redwood City, CA 39 mi48 min NW 6 G 7 54°F 57°F1023.9 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA11 mi11 minN 010.00 miOvercast52°F48°F88%1023.7 hPa
Napa, Napa County Airport, CA12 mi12 minN 510.00 miOvercast52°F48°F86%1022.5 hPa
Petaluma Municipal Airport, CA18 mi31 minW 710.00 miOvercast52°F50°F94%1023.7 hPa
Concord, Buchanan Field, CA19 mi13 minWSW 410.00 miOvercast54°F46°F77%1022 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
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Last 24hrCalmCalmCalmCalmN3CalmCalmCalmCalmCalmSW3S5CalmCalmCalmCalmCalmCalmCalmN4NW4NW5NW6NW5
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Tide / Current Tables for Pinole Point, San Pablo Bay, California
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Pinole Point
Click for Map
Tue -- 04:47 AM PST     2.21 feet Low Tide
Tue -- 05:33 AM PST     Moonset
Tue -- 07:14 AM PST     Sunrise
Tue -- 10:48 AM PST     6.43 feet High Tide
Tue -- 04:03 PM PST     Moonrise
Tue -- 04:49 PM PST     Sunset
Tue -- 05:50 PM PST     -0.35 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.64.33.72.92.42.22.63.44.55.56.26.4653.620.7-0.1-0.300.91.934

Tide / Current Tables for Petaluma River Approach #3/#4, San Pablo Bay, California Current
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Petaluma River Approach #3/#4
Click for Map
Tue -- 12:42 AM PST     -0.00 knots Slack
Tue -- 02:50 AM PST     -0.32 knots Max Ebb
Tue -- 04:56 AM PST     0.00 knots Slack
Tue -- 05:33 AM PST     Moonset
Tue -- 07:14 AM PST     Sunrise
Tue -- 07:25 AM PST     0.70 knots Max Flood
Tue -- 11:28 AM PST     -0.00 knots Slack
Tue -- 02:59 PM PST     -0.90 knots Max Ebb
Tue -- 04:03 PM PST     Moonrise
Tue -- 04:49 PM PST     Sunset
Tue -- 07:04 PM PST     0.00 knots Slack
Tue -- 09:40 PM PST     0.50 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.1-0.1-0.3-0.3-0.200.40.70.70.60.40.1-0.2-0.6-0.8-0.9-0.8-0.7-0.4-00.30.50.50.4

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (0,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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