Sunday, December15, 2019
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Marine Weather and Tides
Black Point-Green Point, 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 7:17AMSunset 4:53PM Sunday December 15, 2019 5:06 AM PST (13:06 UTC) Moonrise 8:39PMMoonset 10:28AM Illumination 85% Phase: Waning Gibbous; Moon at 18 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- 253 Am Pst Sun Dec 15 2019
.small craft advisory in effect until 9 am pst this morning...
Today..NW winds 5 to 15 kt. Gusts up to 25 kt this morning.
Tonight..NW winds 5 to 15 kt.
Mon..NE winds 5 to 10 kt.
Mon night..E winds 10 to 20 kt with gusts up to 25 kt.
Tue..E winds 10 to 20 kt with gusts up to 25 kt.
Tue night..E winds 10 to 20 kt with gusts up to 25 kt. A chance of rain.
Wed..E winds around 5 kt. A chance of rain.
Thu..SE winds 5 to 10 kt. A chance of rain.
PZZ500 253 Am Pst Sun Dec 15 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest winds will be breezy today as a coastal trough develops over southern california while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through tomorrow evening, particularly for smaller vessels. Southerly winds will return later on Monday ahead of the next weather system.


7 Day Forecast for Marine Location Near Black Point-Green Point, CA
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location: 38.11, -122.5     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 151154 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 354 AM PST Sun Dec 15 2019

SYNOPSIS. Isolated showers will linger near the coastline through early morning before dissipating later in the day. Cooler and drier conditions are then likely to persist into early next week. Unsettled conditions return midweek and potentially again late next weekend.

DISCUSSION. as of 03:23 AM PST Sunday . Lingering moisture in a northwest flow continues to result in isolated showers near coastal areas early this morning. Meanwhile, cold air advection has resulted in a region-wide cool down in wake of the passing of the main mid/upper level trough. As flow aloft turns more northerly through sunrise, look for showers to diminish in coverage with partly cloudy to mostly clear sky conditions developing through the day. Daytime temperatures will generally warm into the 50s for most urban areas and hold in the 40s in the higher elevations across the region.

Low level conditions will dry out even more so tonight into Monday resulting in even colder overnight conditions. With light winds and mainly clear sky conditions, temperatures will drop into the lower/middle 30s for most interior locations and into the upper 30s to lower 40s even near the coast by Monday morning. These will be some of the coldest temperatures of the month so far. Patchy frost will be possible with a few hours of freezing temperatures in the region's coldest interior locations. Other than an increase in high level clouds beginning Monday night into Tuesday, similar weather conditions are likely with highs in the 50s and lows in the 30s to 40s.

The forecast models continue to indicate an increase in moisture associated with a mid/upper level system approaching the region late Tuesday into Wednesday. This system has the potential to produce widespread rainfall, generally light to moderate in nature across portions of the region. However, there remains some uncertainty with respect to the exact track of this system, available moisture and mid/upper level support. Regardless, unsettled conditions are likely to return to much of the region by midweek. As that mid/upper level system shifts inland late in the week, a deeper plume of atmospheric moisture is forecast to take aim at the Pacific Northwest and/or far northern California with mainly dry conditions across our region. However, depending on the exact track of the deeper moisture advection, cannot rule out light rain over the far northern portions of the North Bay late in the week.

Unsettled weather conditions are then looking likely by late next weekend as a mid/upper level system approaches the region and pushes the deeper moisture plume southward in the form of a frontal system. Details remain difficult to nail down at this time, yet widespread rainfall looks possible Stay tuned.

AVIATION. as of 03:54 AM PST Sunday . For 12z TAFs. Scattered showers have moved south of most of the terminals this morning, the exception at KMRY which could see a scattered shower through 15z. Patchy fog may develop near KSNS through 16z, otherwise VFR conditions are expected today for the TAF sites. Some low level moisture remains with mainly FEW/SCT cumulus with bases 3000-5000 feet. Late this morning and afternoon cumulus will likely become more numerous over the terrain as the surface warms. Northwest winds have generally subsided since yesterday. Northwest winds mainly 5-10 kt today.

Vicinity of KSFO . VFR through the period with FEW to SCT clouds between 3,000 and 4,000 ft AGL. Mainly FEW this morning with SCT coverage more likely this afternoon. Winds have subsided with northwest winds near 10 kt this morning. Winds increasing to 10-15 kt this afternoon.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR through the period. An isolated shower may move in the vicinity of KMRY through 15z. SCT/BKN clouds with bases 3000-5000 feet will decrease this morning and become FEW/SCT this afternoon. W to NW winds 5-10 kt expected through the day today.

MARINE. as of 03:23 AM PST Sunday . Northwest winds will be breezy today as a coastal trough develops over southern California while high pressure builds offshore. Moderate to large northwest swell will gradually subside into early next week. The combination of gusty winds and large combined seas will create hazardous seas conditions through tomorrow evening, particularly for smaller vessels. Southerly winds will return later on Monday ahead of the next weather system.

MTR WATCHES/WARNINGS/ADVISORIES. Tday. SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Pinos 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 SCA . Mry Bay SCA . SF Bay until 9 AM



PUBLIC FORECAST: RGass AVIATION: ST MARINE: ST

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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 13 mi48 min NNW 6 G 7 47°F 1020.1 hPa
RCMC1 - 9414863 - Richmond, CA 14 mi48 min 55°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 15 mi49 min Calm 47°F 1021 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 16 mi48 min NW 11 G 16 51°F 1020.4 hPa
UPBC1 21 mi48 min WNW 8.9 G 14
FTPC1 - 9414290 - San Francisco, CA 21 mi54 min SW 2.9 G 5.1 47°F 55°F1020.7 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 21 mi54 min WNW 14 G 16 48°F 54°F1019.9 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 22 mi48 min W 7 G 9.9 49°F 1019.5 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 22 mi54 min NW 13 G 15 50°F 1020.2 hPa
PXSC1 22 mi48 min 51°F 41°F
OBXC1 23 mi54 min 50°F 41°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 23 mi54 min NW 11 G 15
46237 - San Francisco Bar, CA (142) 24 mi66 min 55°F8 ft
PCOC1 - 9415144 - Port Chicago, CA 25 mi48 min 53°F
LNDC1 25 mi54 min NW 5.1 G 11 49°F 1020.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 26 mi54 min 53°F1020.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 26 mi81 min NW 5.1 43°F 1019 hPa39°F
AAMC1 - 9414750 - Alameda, CA 26 mi48 min 55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi26 min NNW 18 G 21 53°F 56°F1021.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 33 mi54 min W 8 G 12 47°F 1019.4 hPa
RTYC1 - 9414523 - Redwood City, CA 44 mi54 min WNW 12 G 15 49°F 57°F1020.6 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 44 mi36 min NNW 19 G 25 55°F1020.7 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA4 mi71 minN 010.00 miPartly Cloudy45°F39°F81%1020.7 hPa
Petaluma Municipal Airport, CA12 mi71 minN 010.00 miMostly Cloudy37°F37°F100%1020.7 hPa
Napa, Napa County Airport, CA14 mi72 minN 010.00 miFair40°F36°F86%1019 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
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1 day agoCalmCalmCalmCalmCalmN4CalmS64CalmSE3CalmCalmSW10SW13SW10SW10SW7
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2 days agoCalmCalmCalmCalmCalmCalmN3N7N5N5N3N4CalmCalmCalmN5N4CalmN4CalmCalmCalmCalmCalm

Tide / Current Tables for Petaluma River entrance, San Pablo Bay, California
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Petaluma River entrance
Click for Map
Sun -- 03:56 AM PST     5.13 feet High Tide
Sun -- 07:19 AM PST     Sunrise
Sun -- 09:10 AM PST     2.75 feet Low Tide
Sun -- 10:28 AM PST     Moonset
Sun -- 02:18 PM PST     6.40 feet High Tide
Sun -- 04:51 PM PST     Sunset
Sun -- 08:39 PM PST     Moonrise
Sun -- 10:00 PM PST     -0.79 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.42.744.85.14.94.33.632.833.84.85.86.46.35.74.63.21.70.3-0.5-0.8-0.4

Tide / Current Tables for Petaluma River Approach, San Pablo Bay, California Current
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Petaluma River Approach
Click for Map
Sun -- 12:21 AM PST     0.58 knots Max Flood
Sun -- 04:30 AM PST     -0.00 knots Slack
Sun -- 06:25 AM PST     -0.29 knots Max Ebb
Sun -- 07:18 AM PST     Sunrise
Sun -- 08:48 AM PST     0.00 knots Slack
Sun -- 10:27 AM PST     Moonset
Sun -- 11:23 AM PST     0.65 knots Max Flood
Sun -- 02:30 PM PST     -0.01 knots Slack
Sun -- 04:50 PM PST     Sunset
Sun -- 05:56 PM PST     -1.02 knots Max Ebb
Sun -- 08:39 PM PST     Moonrise
Sun -- 10:18 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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0.60.60.50.30.1-0.1-0.3-0.3-0.20.10.40.60.60.40.2-0.2-0.6-0.9-1-0.9-0.7-0.5-0.10.3

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