Thursday, October28, 2021
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Marine Weather and Tides
Rodeo, 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 7:29AMSunset 6:15PM Thursday October 28, 2021 1:41 PM PDT (20:41 UTC) Moonrise 11:26PMMoonset 1:38PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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- 936 Am Pdt Thu Oct 28 2021
Today..SE winds 5 to 10 kt, becoming nw this afternoon. Patchy fog this morning.
Tonight..SW winds 5 to 10 kt.
Fri..SW winds 5 to 10 kt.
Fri night..SW winds 5 to 10 kt.
Sat..SW winds around 5 kt.
Sat night..SW winds 5 to 10 kt.
Sun..SW winds around 5 kt. A chance of rain.
Mon..S winds 5 to 10 kt. Rain likely.
PZZ500 936 Am Pdt Thu Oct 28 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A moderately large, longer period northwest swell has arrived and is outperforming model data by a few feet, with swell heights of 10 to 14 feet at roughly 15 to 17 seconds. This wave energy will bring hazardous conditions for small craft vessels, particularly in the surf zone, near shoals, and at harbor entrances with breakers of 15 to 20 feet. This wave energy will gradually subside later today and into tomorrow. Breezy to locally gusty northwest winds will persist during the day over in our outer waters and occasionally along some of our inner water zones.


7 Day Forecast for Marine Location Near Rodeo, CA
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location: 38.06, -122.28     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 281034 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 334 AM PDT Thu Oct 28 2021

SYNOPSIS. Dry and mild weather the next couple of days. Low pressure moving over the far northern portion of California will bring a chance of showers late Friday and Saturday, mainly to the northern mountains. Rain returns to the the majority of Northern California early next week.

DISCUSSION. A little north wind down the Valley overnight provided sufficient mixing to limit fog in the Valley, while the night fog product showed moisture trapped in the mountain valleys/basins, i.e. Burney Basin and around Big Q. Increasing subsidence this morning, from the upper ridge axis building over the region, may lead to some fog in the Valley, as moisture from recent rain will be trapped below the radiative inversion. The HREF suggests some patchy chances of better than 50/50 of VSBYS less than 3SM developing before or after sunrise from the Nrn San Joaquin Valley northward into the central Sac Vly, mainly in the 0600-1000 time frame. At 0300, MCC and SAC began to report BR. Otherwise, a very pleasant day with max temps near to a little above normal in the Valley, and 3 to 9 degrees above normal in the mountains due to the warmer air aloft.

The upper ridge over Norcal shifts Ewd on Fri in advance of a closing mid-level low pressure center. Differences in the track of the low center provide a great deal of uncertainty in the areal coverage of PoPs/QPFs mainly Fri nite and Sat. The GFS continues to be farther south and faster than the ECMWF. The 5H cluster analysis shows a trof over Norcal with only Cluster 3 heavily weighted to the ECMWF showing a closed low just off the N CA coast by 12z Sat. Looks as if the models, especially the GFS have slowed the timing of spreading precip into our CWA and have adjusted the PoP/QPF timing in the morning package to Fri nite and Sat. This also includes limiting the chance of thunder to Sat with the consolidated low near the CA/OR border. Forecast water vapor transport shows Norcal in between moisture plumes so just light QPFs are expected over the Nrn mountain zones. The SREF QPF plumes show a mean of about 0.20" at MHS, and less than a tenth of RDD, however the majority of members are higher and consolidated just under a tenth of an inch.

A narrow highly amplified ridge builds along the W Coast on Sun while the cut-off low fills/exits our area, but suppresses heights and warming in our CWA. Thus a cooling trend is expected over the weekend. The narrow, amplified ridge will quickly be shunted Ewd by the next progressive Pacific trof and front which is forecast to move inland on Mon bringing another round of precip to interior Norcal. JHM

EXTENDED DISCUSSION (Monday THROUGH Thursday).

Models in good agreement with progression of next Pacific frontal system into NorCal Monday. Front progged to weaken as it moves into the CWA with overall light QPF. Drier weather expected Tuesday into early Wednesday under upper level ridge. Models differ with progression and overall QPF of next system, but point to more widespread light to moderate precipitation around the Wed/Thu timeframe.

AVIATION.

VFR conds ovr intr NorCal nxt 24 hrs exc lcl MVFR/IFR poss in BR/FG in Cntrl Vly til 17z with sfc wnd blo 12 kts.

STO WATCHES/WARNINGS/ADVISORIES. None.


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 1 mi53 min E 9.9G12 67°F 1020.4 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 8 mi53 min NE 5.1G7 65°F 62°F1021.1 hPa
RCMC1 - 9414863 - Richmond, CA 12 mi53 min NW 6G8.9 64°F 61°F1020.8 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 12 mi53 min NNW 11G13 70°F 1020.8 hPa
PCOC1 - 9415144 - Port Chicago, CA 13 mi53 min E 11G13 66°F 63°F1020.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 15 mi60 min NNW 8.9 62°F 1021 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 17 mi53 min NNW 11G12 63°F 1020.1 hPa
SFXC1 - San Francisco Bay Reserve, CA 17 mi116 min E 8.9 67°F 1026 hPa58°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi53 min NW 1.9G4.1
OBXC1 18 mi53 min 64°F
LNDC1 18 mi53 min WNW 5.1G7 68°F 1020.3 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 19 mi53 min NW 8G11 65°F 1019.5 hPa
PXSC1 19 mi53 min 65°F 65°F
FTPC1 - 9414290 - San Francisco, CA 20 mi53 min N 9.9G12 65°F 1020.3 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi53 min NW 5.1G6 68°F 62°F1020.7 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 21 mi53 min SE 6G8 65°F 1020.8 hPa
46237 - San Francisco Bar, CA (142) 26 mi71 min 59°F 60°F9 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 36 mi41 min WNW 5.8G9.7 58°F1020.7 hPa
PRYC1 - 9415020 - Point Reyes, CA 37 mi53 min 59°F1020.7 hPa
RTYC1 - 9414523 - Redwood City, CA 38 mi53 min SE 1G2.9 72°F 1021 hPa
BDXC1 46 mi95 min 58°F

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
Napa, Napa County Airport, CA10 mi47 minESE 610.00 miFair73°F58°F59%1019.4 hPa
Concord, Buchanan Field, CA13 mi48 minNNE 810.00 miFair72°F55°F55%1019.2 hPa
Novato / Gnoss Field, CA16 mi66 minN 010.00 miFair72°F61°F69%1021 hPa
Petaluma Municipal Airport, CA22 mi46 minN 010.00 miFair70°F61°F73%1021 hPa
Fairfield / Travis Air Force Base, CA24 mi43 minNE 1010.00 miFair72°F58°F62%1021.6 hPa

Link to 5 minute data for KAPC

Wind History from APC (wind in knots)
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Last 24hrSW6SW7S3SW4S40SE30E300000000N3N3N4N40E6SE6
1 day agoS10S11S10SW9S6S6SW6SW6SW40W3SW400N4S30S300NW3SW434
2 days agoW14W16W15W12W13W10W11SW8SW5W3SW4W4W5SW5NW300SE30S4S10S12S11S11

Tide / Current Tables for Selby, Carquinez Strait, California
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Selby
Click for Map
Thu -- 01:32 AM PDT     0.50 feet Low Tide
Thu -- 07:31 AM PDT     Sunrise
Thu -- 09:11 AM PDT     5.03 feet High Tide
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:26 PM PDT     3.54 feet Low Tide
Thu -- 02:37 PM PDT     Moonset
Thu -- 06:13 PM PDT     Sunset
Thu -- 06:48 PM PDT     5.32 feet High 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 Davis Point, California Current
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Davis Point
Click for Map
Thu -- 03:33 AM PDT     0.00 knots Slack
Thu -- 06:23 AM PDT     1.13 knots Max Flood
Thu -- 07:31 AM PDT     Sunrise
Thu -- 10:57 AM PDT     -0.00 knots Slack
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 01:30 PM PDT     -0.89 knots Max Ebb
Thu -- 02:37 PM PDT     Moonset
Thu -- 03:27 PM PDT     0.00 knots Slack
Thu -- 05:28 PM PDT     1.01 knots Max Flood
Thu -- 06:13 PM PDT     Sunset
Thu -- 07:47 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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Weather Map
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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.
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