Saturday, October23, 2021
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Marine Weather and Tides
Port Costa, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:24AMSunset 6:21PM Saturday October 23, 2021 1:43 PM PDT (20:43 UTC) Moonrise 7:13PMMoonset 9:20AM Illumination 91% 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- 847 Am Pdt Sat Oct 23 2021
.gale warning in effect from late tonight through Sunday evening...
Today..SW winds 5 to 10 kt. Rain.
Tonight..S winds 15 to 20 kt with gusts up to 35 kt. Rain.
Sun..S winds 20 to 30 kt with gusts up to 45 kt. Rain.
Sun night..SW winds 10 to 20 kt with gusts up to 30 kt. Rain.
Mon..SW winds 10 to 15 kt. Rain.
Mon night..SW winds 5 to 10 kt. A chance of rain.
Tue..S winds 5 to 10 kt. A chance of rain.
Wed..NW winds around 5 kt.
PZZ500 847 Am Pdt Sat Oct 23 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Southerly winds will increase to gales as a strong low pressure system nears the pacific northwest sweeping a cool frontal system across our coastal waters later Sunday into Monday morning. An atmospheric river will accompany this frontal system bringing heavy rain later in the weekend. Expect strong and gusty southerly winds, steepening waves and large swell Sunday into Monday. Chilly and showery weather continuing Tuesday. Drier mid to late next week.


7 Day Forecast for Marine Location Near Port Costa, CA
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location: 38.03, -122.15     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 230927 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 227 AM PDT Sat Oct 23 2021

SYNOPSIS. A significant weather system will bring heavy precipitation leading to flooding concerns Saturday evening into Monday. Strong southerly winds are also expected to develop. Heavy snow will be possible in the Sierra by Sunday night into early Tuesday.

DISCUSSION. Radar imagery shows some light returns scattered throughout interior northern California this early morning. During the late evening hours, some embedded heavier rain showers impacted parts of the Shasta County area. These have since dissipated and not expecting any weather-related impacts in the immediate near-term. Beyond the next 12 to 18 hours, things will begin changing in a hurry.

The much-anticipated atmospheric river will materialize along a deepening trough in the North Pacific Ocean over the next 24 hours. With Integrated Vapor Transport values forecast to peak in the 1000 to 1250+ kg/m/s range, combined with strong upper level jet of 100 to 125+ kt, a powerful system will bring widespread heavy rain to much of northern California. Onset of the precipitation will begin overnight Saturday and into Sunday morning with periods of the heaviest precipitation occurring during the day on Sunday and into Sunday night. The warm air associated with this system will result in high snow levels at the onset of the rain, starting in the 8,500 to 10,000 ft range early Sunday. This means that nearly all pass levels will start off with heavy rain rather than snow. The colder air will gradually filter in from north to south late Sunday and Sunday night, resulting in a drop in snow levels to around 5,550 to 6,500 ft by mid-day Monday. Strong south/southwest winds will be accompanied by the heavy precipitation; a Wind Advisory is in effect for the Delta, Sacramento Valley, and lower foothills early Sunday morning through Sunday evening.

Recent burn areas will be extraordinarily vulnerable to debris flows, mudslides, and rock slides, which has prompted the issuance of a Flash Flood Watch for 13 various burn scars from 2018 to 2021 that starts early Sunday and continues into early Monday. This includes the 2018 Camp, Carr, Delta, Hirz Fires; the 2020 August Complex, North Complex, LNU Complex, Zogg Fires; and the 2021 Caldor, Dixie, McFarland, River, and Salt Fires. In our county warning area alone, this encompasses over 2.2 million acres of burn area under the Flash Flood Watch (with additional areas outside our CWA are also under a Flash Flood Watch). With storm total precipitation forecast in the 2 to 5 inch range in the Valley, and 4 to 12+ inches in the foothills and mountains, the Weather Prediction Center has issued a moderate and high risk of excessive rainfall over much of the region. The highest risk is focused between the Dixie and Caldor burn areas where the heaviest rainfall is forecast. Nearly all of these burn areas have yet to be tested with such a magnitude of a storm, and the forecast rainfall is deeply concerning. Even if there were no burn areas to be concerned about, this is still far too much rainfall forecast in such little amount of time. For those living near and downstream of burn areas, have a plan in place to evacuate if necessary. Please stay safe and weather-aware during this impactful storm.

Precipitation will begin to taper off in intensity and coverage late Sunday night and into Monday morning. On/off precipitation will continue through most of the day on Monday, becoming more scattered in nature Monday night and into Tuesday. Winter weather- related impacts will begin to materialize then in the mountains with the lowering of snow levels. Presently a Winter Storm Watch remains in effect for the mountains above 6000 feet from Sunday evening through late Monday night. // Rowe

EXTENDED DISCUSSION (Wednesday THROUGH Saturday). EPAC upper level ridge builds inland over interior NorCal midweek resulting in drier and warmer weather. High temperatures in the Central Valley climb upwards of 10-12 degrees on Wednesday and inch up into the upper 60s to lower 70s Thu/Fri. Ridge axis shifts into the Intermountain West Friday as next upstream Pacific frontal system approaches. Forecast uncertainties with speed of progression of this system as significant model differences exist. Forecast remains dry at this time into Saturday.

AVIATION. Lcl MVFR poss omtns this mrng in lgt shwrs otrw incrsg areas MVFR with lcl IFR poss sprdg fm NW to SE acrs intr NorCal tda as nxt Pac fntl sys movs inld. Lcl Sly sfc wnd to 15 kts with gusts to 25 kts poss in Cntrl Vly tda ahd/alg fnt. Wly sfc wnd gsts up to 35 kts poss ovr hyr mtn trrn this aftn and tngt. Sn lvl arnd 6000 ft AMSL this mrng incrsg to abv 7000 ft AMSL tngt.

STO WATCHES/WARNINGS/ADVISORIES. Flood Watch from this evening through late tonight for Burney Basin / Eastern Shasta County-Carquinez Strait and Delta-Central Sacramento Valley-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley- Shasta Lake Area / Northern Shasta County-Southern Sacramento Valley-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Flash Flood Watch from late tonight through late Sunday night for Burney Basin / Eastern Shasta County-Central Sacramento Valley-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley- Northern Sacramento Valley-Shasta Lake Area / Northern Shasta County-Southern Sacramento Valley-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Winter Storm Watch from Sunday evening through late Monday night for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Wind Advisory from 5 AM to 11 PM PDT Sunday for Carquinez Strait and Delta-Central Sacramento Valley-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MZXC1 - 9415102 - Martinez-Amorco CA 1 mi56 min W 6G9.9 62°F 62°F1014.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 6 mi56 min W 12G12 62°F 63°F1014.4 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 6 mi56 min W 7G12 61°F 1014.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 13 mi59 min WSW 6 65°F 1018 hPa52°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 14 mi56 min NW 4.1G6 64°F 1014 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 14 mi56 min S 7G8.9 61°F 1015 hPa
RCMC1 - 9414863 - Richmond, CA 16 mi56 min SSW 4.1G8.9 60°F 60°F1014.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi56 min SE 8.9G11
TIBC1 - Tiburon Pier, San Francisco Bay, CA 18 mi63 min ENE 6 60°F 1015 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi56 min SSE 7G9.9 61°F 1014.6 hPa
LNDC1 18 mi56 min SSE 6G8 61°F 1014.7 hPa
OBXC1 19 mi56 min 62°F
PXSC1 20 mi56 min 61°F 61°F
AAMC1 - 9414750 - Alameda, CA 20 mi56 min ESE 5.1G8 60°F 61°F1015 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi56 min ESE 7G8.9 59°F 1013.4 hPa
FTPC1 - 9414290 - San Francisco, CA 23 mi62 min S 6G9.9 61°F 70°F1014.6 hPa
46237 - San Francisco Bar, CA (142) 31 mi44 min 56°F 56°F8 ft
RTYC1 - 9414523 - Redwood City, CA 36 mi56 min E 4.1G7 64°F 1015.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 41 mi34 min SSE 16G19
PRYC1 - 9415020 - Point Reyes, CA 44 mi56 min 57°F1014.2 hPa

Wind History for Martinez-Amorco Pier, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA6 mi51 minSW 810.00 miOvercast65°F49°F56%1012.9 hPa
Napa, Napa County Airport, CA14 mi50 minSSW 1210.00 miOvercast62°F53°F73%1013.4 hPa
Fairfield / Travis Air Force Base, CA21 mi46 minSW 910.00 miMostly Cloudy66°F50°F55%1014.5 hPa
Oakland, Metro Oakland International Airport, CA23 mi51 minSSE 510.00 miMostly Cloudy63°F51°F65%1015 hPa
Novato / Gnoss Field, CA23 mi69 minSW 1010.00 miMostly Cloudy64°F50°F60%1014.2 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Last 24hrSW8SW10SW8SW11SW12SW5S4SW6S4SW6W6SW3S5S5S5SW500S6S6S9SW8SW10SW8
1 day agoNW7N7SW7SW12SW10S9S10S8S7S7S8S11S6S11S11S10
G19
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2 days agoS70NE4NE5E40SW30N30NW3NW4NW3NW4NW4N4N4N4N6N4N40N5N7

Tide / Current Tables for Benicia, Carquinez Strait, California
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Benicia
Click for Map
Sat -- 04:42 AM PDT     3.94 feet High Tide
Sat -- 07:25 AM PDT     Sunrise
Sat -- 09:27 AM PDT     1.96 feet Low Tide
Sat -- 10:20 AM PDT     Moonset
Sat -- 03:14 PM PDT     5.21 feet High Tide
Sat -- 06:19 PM PDT     Sunset
Sat -- 08:12 PM PDT     Moonrise
Sat -- 10:55 PM PDT     0.06 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Carquinez Strait, California Current
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Carquinez Strait
Click for Map
Sat -- 12:17 AM PDT     0.00 knots Slack
Sat -- 03:12 AM PDT     1.64 knots Max Flood
Sat -- 06:21 AM PDT     -0.00 knots Slack
Sat -- 07:26 AM PDT     Sunrise
Sat -- 08:53 AM PDT     -1.24 knots Max Ebb
Sat -- 10:20 AM PDT     Moonset
Sat -- 11:18 AM PDT     0.00 knots Slack
Sat -- 02:06 PM PDT     2.17 knots Max Flood
Sat -- 05:04 PM PDT     -0.00 knots Slack
Sat -- 06:19 PM PDT     Sunset
Sat -- 08:13 PM PDT     Moonrise
Sat -- 08:41 PM PDT     -2.78 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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