Thursday, July29, 2021
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Marine Weather and Tides
Knightsen, 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 6:06AMSunset 8:20PM Thursday July 29, 2021 1:52 PM PDT (20:52 UTC) Moonrise 10:48PMMoonset 10:54AM Illumination 70% Phase: Waning Gibbous; Moon at 20 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- 853 Am Pdt Thu Jul 29 2021
.small craft advisory in effect from 3 pm pdt this afternoon through this evening...
.small craft advisory in effect from Friday afternoon through Friday evening...
Today..SW winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. Gusts up to 25 kt.
Tonight..SW winds 10 to 15 kt with gusts up to 25 kt.
Fri..SW winds 10 to 15 kt with gusts up to 25 kt.
Fri night..SW winds 5 to 10 kt with gusts up to 25 kt.
Sat..SW winds 5 to 10 kt.
Sat night..SW winds 5 to 10 kt.
Sun..SW winds 10 to 15 kt.
Mon..SW winds 10 to 15 kt.
PZZ500 853 Am Pdt Thu Jul 29 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light to locally moderate gusty northwest winds across the northern outer waters. Breezy to gusty west winds each afternoon and evening across the san francisco bay north of the bay bridge otherwise light northwest winds through Monday. A moderate period southerly swell will persist in the waters.


7 Day Forecast for Marine Location Near Knightsen, CA
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location: 37.98, -121.58     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 291747 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 1047 AM PDT Thu Jul 29 2021

SYNOPSIS. Late day mountain thunderstorm chances expected through the week. Above normal temperatures are expected through Friday with a slight cooling trend for the weekend and early next week.

DISCUSSION. GOES-West infrared imagery reveals some mid/high clouds propagating over central and northern interior California this early Thursday morning. Infrared imagery also shows the Dixie Fire continuing to burn hot in some areas of Butte and Plumas Counties. After a hot day yesterday, most communities are running at least several degrees warmer compared to 24 hours ago -- if not more. As of 1 AM PDT, Chico and Oroville are both at 16 degrees above compared to this time yesterday night. Onshore San Francisco to Sacramento gradient is a tad stronger resulting in wind gusts around 25 to 30 kt at Travis Air Force Base. By sunrise, temperatures will bottom out in the 60s to low 70s in the Valley with the adjacent thermal belts in the 70s.

An expansive upper level ridge centered over the Great Plains will continue to promote south/southeasterly flow aloft over the Southwestern United States. Surface temperatures again this afternoon will be around 5 to 8 deg F above late July normals with most Valley locations forecast to reach the triple digits. Exception to this would be around the Delta in Solano County. Another potential twist that will have to be closely monitored would be wildfire smoke and its influence on temperatures. Corresponding heat risk for this afternoon generally lands in the moderate (orange) risk with a few isolated pockets of high (red) risk.

Reoccurring opportunities for afternoon/evening showers/ thunderstorms will continue over the next several afternoons as the south/southwest flow draws moisture into portions of central and northern California. For this afternoon, slight chance of showers and thunderstorms extend along and east of the Sierra crest with the best chance generally along/south of Interstate 80. Better chances develop on Friday with 15 to 30 percent chance of showers/thunderstorms expanding through the mountains of Shasta County. Storms may be accompanied by gusty/erratic winds, brief downpours, and lightning.

Temperatures are forecast to moderate over the weekend as an upper level trough develops along the 140th meridian. Most pronounced cooling will occur in/around the Delta where temperatures will fall back by 10 or more deg F. Sacramento Metro Area will likely fall to the 90s for both Saturday and Sunday. // Rowe

EXTENDED DISCUSSION (Monday THROUGH Thursday). Cluster analysis in the extended favors troughing along the West Coast with weak ridging over the Rockies. The resulting onshore flow for northern California will keep temperatures in-check early next week with highs generally landing within several degrees of early August normals.

AVIATION. VFR conditions at TAF sites. Local MVFR/IFR conditions in wildfire smoke, mainly over Plumas and Butte counties. Surface wind gusts under 12 kts continue except local southwest gusts 20-30 kts vicinity west Delta. Isolated showers and thunderstorms possible over the mountains after 18Z.

STO WATCHES/WARNINGS/ADVISORIES. None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 17 mi53 min NW 13 G 18 77°F 1011.7 hPa (-0.8)
PCOC1 - 9415144 - Port Chicago, CA 25 mi53 min W 16 G 18 74°F 71°F1012.4 hPa (-1.2)
SFXC1 - San Francisco Bay Reserve, CA 28 mi68 min WNW 11 86°F 1013 hPa59°F
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi53 min NW 15 G 19 74°F 69°F1012.7 hPa (-1.2)
UPBC1 29 mi53 min WNW 15 G 19
CQUC1 35 mi34 min 68°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 37 mi53 min W 11 G 13 67°F 1013 hPa (-1.4)
LNDC1 39 mi53 min NNW 4.1 G 8.9 67°F 1014.1 hPa (-0.7)
AAMC1 - 9414750 - Alameda, CA 41 mi53 min W 8 G 9.9 64°F 68°F1014.5 hPa (-0.8)
OBXC1 42 mi53 min 62°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 42 mi53 min WNW 8 G 8.9 62°F 1014.2 hPa (-0.9)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 42 mi53 min W 8.9 G 9.9
PPXC1 - 9414847 - Richmond (Point Potrero), CA 42 mi53 min SSW 13 G 17 61°F 1014.3 hPa (-1.0)
RCMC1 - 9414863 - Richmond, CA 44 mi53 min S 5.1 G 8 65°F 64°F1014 hPa (-1.0)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 45 mi53 min WSW 6 G 15 65°F 1013.2 hPa (-0.9)
PXSC1 45 mi53 min 65°F 65°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 46 mi42 min ENE 2.9 67°F 1014 hPa
RTYC1 - 9414523 - Redwood City, CA 47 mi53 min NNW 7 G 11 69°F 1014.5 hPa (-0.9)
FTPC1 - 9414290 - San Francisco, CA 48 mi53 min WSW 4.1 G 13 58°F 63°F1014.6 hPa (-0.7)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Stockton, Stockton Metropolitan Airport, CA18 mi58 minNNW 810.00 miFair93°F57°F30%1011.4 hPa
Livermore, Livermore Municipal Airport, CA23 mi60 minW 710.00 miFair93°F49°F22%1011.8 hPa

Link to 5 minute data for KSCK

Wind History from SCK (wind in knots)
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Last 24hr5NW7W10NW10NW11NW12NW10W12W11W10W8NW7N6N7N4N5N4N5NE3Calm3NW7NW7N8
1 day agoNW9N11N10
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2 days ago4W5
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Tide / Current Tables for Irish Landing, Sand Mound Slough, San Joaquin River, California
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Irish Landing
Click for Map
Thu -- 04:29 AM PDT     1.00 feet Low Tide
Thu -- 06:07 AM PDT     Sunrise
Thu -- 09:48 AM PDT     2.92 feet High Tide
Thu -- 11:54 AM PDT     Moonset
Thu -- 04:26 PM PDT     0.25 feet Low Tide
Thu -- 08:17 PM PDT     Sunset
Thu -- 11:04 PM PDT     3.33 feet High Tide
Thu -- 11:48 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.92.31.81.3111.422.52.82.92.72.31.610.50.30.30.71.32.12.73.23.3

Tide / Current Tables for Vulcan Island .5 mi E, San Joaquin River, California Current
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Vulcan Island .5 mi E
Click for Map
Thu -- 12:01 AM PDT     -0.00 knots Slack
Thu -- 02:50 AM PDT     -0.35 knots Max Ebb
Thu -- 05:49 AM PDT     0.00 knots Slack
Thu -- 06:06 AM PDT     Sunrise
Thu -- 08:18 AM PDT     0.48 knots Max Flood
Thu -- 11:25 AM PDT     -0.00 knots Slack
Thu -- 11:53 AM PDT     Moonset
Thu -- 02:34 PM PDT     -0.49 knots Max Ebb
Thu -- 06:06 PM PDT     0.00 knots Slack
Thu -- 08:17 PM PDT     Sunset
Thu -- 09:01 PM PDT     0.65 knots Max Flood
Thu -- 11:47 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0-0.2-0.3-0.3-0.3-0.20.10.30.50.50.30.1-0.1-0.4-0.5-0.5-0.4-0.3-00.30.60.60.60.5

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    EDIT
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.
Link to Loop

Other links: GEOS-West     Contential US     Full GOES-East
Ground Weather Radar Station




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