Thursday, July2, 2020
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Marine Weather and Tides
North Richmond, 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 5:50AMSunset 8:37PM Thursday July 2, 2020 4:15 PM PDT (23:15 UTC) Moonrise 5:27PMMoonset 2:38AM Illumination 93% Phase: Waxing Gibbous; Moon at 12 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 Pm Pdt Thu Jul 2 2020
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..SW winds 10 to 20 kt with gusts up to 25 kt.
Fri..SW winds 10 to 20 kt with gusts up to 25 kt.
Fri night..SW winds 10 to 20 kt with gusts up to 25 kt.
Independence day..SW winds 5 to 15 kt.
Sat night..W winds 5 to 10 kt with gusts up to 25 kt.
Sun..SW winds 5 to 15 kt.
Sun night..W winds 10 to 15 kt.
Mon..W winds 10 to 20 kt with gusts up to 25 kt.
Tue..SW winds 10 to 20 kt with gusts up to 25 kt.
PZZ500 253 Pm Pdt Thu Jul 2 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate to strong northwest winds will continue over the northern outer waters today. These winds will generate steep fresh swell resulting in hazardous seas conditions, particularly for smaller vessels. Winds will begin to subside tonight and tomorrow, though locally breezy conditions over the northern outer waters will persist into the weekend. A long-period southerly swell train will arrive late tonight into tomorrow. This will cause occasional breaking waves over nearshore shoals and strong currents along the coast, especially near points and headlands.


7 Day Forecast for Marine Location Near North Richmond, CA
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location: 38, -122.4     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 022154 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 254 PM PDT Thu Jul 2 2020

SYNOPSIS. Slightly below normal conditions today. Warming and drying trend through Independence Day. The marine layer will gradually dissipate between now and Saturday night. Slightly cooler with more clouds early next week. Onshore flow will prevail.

DISCUSSION. as of 3:00 PM PDT Thursday . A 556dm 500mb low pressure trough is centered over Alberta Canada and extends southward to encompass the Pacific Northwest, Idaho, Montana, and most importantly, California and the Bay Area. This low pressure system is fairly weak in intensity but has resulted in deepening the marine layer to around 2500 feet at this deepest this morning. Cool air with this trough has led to a regionwide cooldown as well with temperatures running a few to several degrees below normal today.

Forecast models show this low pressure system retreating northward and lingering to our north and playing only a minimal role in the weather over the coming days. This is due to a high pressure system backbuilding from southern New Mexico/western Texas over the coming days and leaning into the base of the trough. As a result, pressure is forecast to trend higher over the majority of the forecast district, except perhaps the extreme North Bay, through the coming days. As a result, warmer, drier air is anticipated to arrive from the southeast and promote warming and drying at the surface through the holiday weekend. Saturday (Independence Day) is forecast to be the warmest day of the holiday weekend though temperatures will only rise to become slightly to somewhat above normal. The warmest inland areas will see afternoon high temperatures ranging from the mid 80s to mid 90s, meanwhile (San Jose, Concord, Livermore, Santa Rosa, Napa), the San Francisco Bay/Monterey Bay Shorelines will be in the low 70s to low 80s depending on distance from the shorelines.

The marine layer is anticipated to become compressed as this high pressure system builds into the majority of our forecast district over the coming days. Initially, this may lead to much more widespread fog and drizzle along the coast as the base of the marine layer is pushed near or to the surface tomorrow night. By Saturday (July 4th), turbulent mixing by dry northerly winds across the coastal waters will scour out the remaining marine layer through the day and into the evening. This will lead to mostly clear skies in time for July 4th festivities though some patches of stratus may attempt to cling on early in the evening along the immediate San Mateo, Monterey coastlines before eventually clearing out as the night progresses.

Short term guidance has backed off somewhat on the risk of north to northwest winds over the North Bay hills Saturday night into Sunday though dry conditions with minimum daytime humidities as low as the teens to low 20s is still expected to occur over the inland areas Saturday and especially on Sunday. Given these dry conditions, elevated fire risk will be present primarily be due to human related activities through the holiday weekend, so please be mindful of any outdoor activities that may lead to a spark that could ignite a wildfire.

By early next week, the same low pressure system over us now remains locked in place over Alberta and will have an opportunity to regain control of our weather pattern Monday night into Tuesday as a series of progressively stronger vorticity waves moves through the base of the trough and rebukes the ridge. This will lead to a slight cooling trend and a rebounding of the marine layer along the coast.

AVIATION. As of 10:57 AM PDT Thursday . For 18Z TAFs. The marine stratus continues to mix-out over the land as of the 18Z TAF publication time with VFR conditions reported around the SF Bay shoreline. There are still some lingering low clouds in parts of the North Bay around STS, as well as in the Salinas Valley near SNS. MRY continues to be blanketed in low clouds. Light winds this morning will increase onshore as the day progresses. Forecast models bring the low clouds back again in the evening/overnight hours.

Vicinity of KSFO . VFR conditions are forecast to prevail for the rest of the morning and afternoon with winds becoming westerly around 15 kt by the afternoon. Models suggest SFO has a better shot of low clouds overnight tonight and into tomorrow.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Low clouds are slowly mixing-out around MRY and SNS this morning. With the deep marine layer, portions of the Monterey Bay Area/Peninsula may likely see the clouds all day long. Areas that do clear will see the low clouds return in the late afternoon/evening hours.

MARINE. as of 02:05 PM PDT Thursday . Moderate to strong northwest winds will continue over the northern outer waters today. These winds will generate steep fresh swell resulting in hazardous seas conditions, particularly for smaller vessels. Generally light to moderate winds expected elsewhere as high pressure weakens off the California coast and a low pressure system develops off the Pacific Northwest. Winds will begin to subside tonight and tomorrow, though locally breezy conditions over the northern outer waters will persist into the weekend. A long-period southerly swell train will arrive late tonight into tomorrow. This will cause occasional breaking waves over nearshore shoals and strong currents along the coast, especially near points and headlands.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . SF Bay until 9 PM



PUBLIC FORECAST: DRP AVIATION: Rowe MARINE: Rowe

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 5 mi45 min SSW 11 G 19 61°F 65°F1013 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 7 mi45 min WSW 18 G 25 61°F 1013.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 8 mi45 min WSW 19 G 22 65°F 1011.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 8 mi35 min SW 11 60°F 1013 hPa
FTPC1 - 9414290 - San Francisco, CA 14 mi45 min WSW 13 G 22 60°F 64°F1013.8 hPa
OBXC1 14 mi45 min 63°F 56°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi45 min W 13 G 15 63°F 1012.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi45 min W 14 G 16
PXOC1 - 9414311 - San Francisco (Pier 1), CA 14 mi45 min SW 6 G 17 65°F 1012.1 hPa
PXSC1 14 mi45 min 64°F 54°F
UPBC1 15 mi45 min W 16 G 20
MZXC1 - 9415102 - Martinez-Amorco CA 15 mi45 min WSW 15 G 17 70°F 69°F1011.5 hPa
LNDC1 16 mi45 min W 11 G 15 65°F 1012.8 hPa
AAMC1 - 9414750 - Alameda, CA 17 mi45 min W 8.9 G 13 65°F 68°F1013 hPa
46237 - San Francisco Bar, CA (142) 19 mi45 min 59°F5 ft
PCOC1 - 9415144 - Port Chicago, CA 20 mi45 min W 17 G 20 71°F 71°F1011 hPa
SFXC1 - San Francisco Bay Reserve, CA 24 mi90 min W 12
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 27 mi45 min NW 14 G 21 74°F 1010.4 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 29 mi25 min S 7.8 G 9.7 55°F 6 ft1014.3 hPa53°F
RTYC1 - 9414523 - Redwood City, CA 35 mi45 min NW 12 G 15 69°F 75°F1012.5 hPa

Wind History for Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA13 mi40 minN 10 G 1710.00 miFair79°F53°F42%1011.8 hPa
Napa, Napa County Airport, CA16 mi21 minSSW 22 G 2710.00 miFair and Breezy70°F54°F57%1010.9 hPa
Concord, Buchanan Field, CA19 mi22 minW 1610.00 miFair76°F52°F43%1009.9 hPa
Petaluma Municipal Airport, CA21 mi20 minWNW 8 G 156.00 miFair with Haze73°F55°F53%1012.5 hPa
Oakland, Metro Oakland International Airport, CA23 mi22 minWNW 1410.00 miA Few Clouds73°F54°F51%1012.5 hPa

Link to 5 minute data for KDVO

Wind History from DVO (wind in knots)
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Last 24hrCalmSW9SW8N7NE8NE5CalmCalmCalmCalmCalmCalmS3CalmS4S4N45N5NE56NE8
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1 day agoSW13SW114
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S4SE4SE3CalmCalmCalm--CalmCalmCalmCalmCalmCalm4E43E5SE8E7E66
2 days ago4NW7
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SW9CalmN3N5NW7--CalmCalmN3N4NW3CalmCalmN4Calm344E7E7SW8

Tide / Current Tables for Pinole Point, San Pablo Bay, California
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Pinole Point
Click for Map
Thu -- 03:37 AM PDT     Moonset
Thu -- 05:34 AM PDT     -0.65 feet Low Tide
Thu -- 05:51 AM PDT     Sunrise
Thu -- 12:23 PM PDT     4.58 feet High Tide
Thu -- 05:01 PM PDT     2.21 feet Low Tide
Thu -- 06:26 PM PDT     Moonrise
Thu -- 08:35 PM PDT     Sunset
Thu -- 11:13 PM PDT     7.02 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.14.83.11.40.1-0.5-0.6-0.10.823.144.54.53.93.12.52.22.53.34.45.56.57

Tide / Current Tables for Pinole Point 1.2 mi W, San Pablo Bay, California Current
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Pinole Point 1.2 mi W
Click for Map
Thu -- 03:01 AM PDT     -1.25 knots Max Ebb
Thu -- 03:37 AM PDT     Moonset
Thu -- 05:51 AM PDT     Sunrise
Thu -- 06:45 AM PDT     0.00 knots Slack
Thu -- 09:16 AM PDT     0.74 knots Max Flood
Thu -- 12:46 PM PDT     -0.00 knots Slack
Thu -- 02:59 PM PDT     -0.55 knots Max Ebb
Thu -- 05:18 PM PDT     0.00 knots Slack
Thu -- 06:26 PM PDT     Moonrise
Thu -- 07:56 PM PDT     1.04 knots Max Flood
Thu -- 08:35 PM PDT     Sunset
Thu -- 11:56 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.9-1.2-1.3-1.2-0.8-0.40.10.50.70.70.50.2-0.1-0.4-0.6-0.5-0.10.40.910.90.70.4

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 (19,4,5,8)
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Ground Weather Radar Station Sacramento, 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.