Thursday, October1, 2020
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Marine Weather and Tides
Rio Vista, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 7:01AMSunset 6:50PM Thursday October 1, 2020 1:02 PM PDT (20:02 UTC) Moonrise 6:12PMMoonset 5:44AM Illumination 100% Phase: Full Moon; Moon at 14 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- 816 Am Pdt Thu Oct 1 2020
Rest of today..SW winds 5 to 15 kt. Hazy and areas of smoke.
Tonight..SW winds 5 to 10 kt. Hazy and areas of smoke.
Fri..SW winds 5 to 15 kt. Hazy and areas of smoke.
Fri night..W winds 5 to 15 kt. Hazy and areas of smoke.
Sat..SW winds 10 to 20 kt with gusts up to 25 kt.
Sat night..SW winds 10 to 20 kt with gusts up to 25 kt.
Sun..SW winds 5 to 10 kt.
Mon..SW winds up to 10 kt.
PZZ500 816 Am Pdt Thu Oct 1 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light to moderate northwest winds will persist as high pressure remains over the eastern pacific. Locally breezy afternoon and evening conditions expected along the immediate coast and prominent points and headlands. The strongest winds are forecast along the big sur coast south of point sur. Mixed seas will continue with a moderate northwest swell and a longer period light southerly swell. Expect southerly swell to build from south to north at the end of the week and into the weekend as a result of hurricane marie.


7 Day Forecast for Marine Location Near Rio Vista, CA
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location: 38.15, -121.69     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 011109 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 409 AM PDT Thu Oct 1 2020

SYNOPSIS. Above normal temperatures and very dry conditions will be seen through Friday. Areas of wildfire smoke will impact interior Norcal for the next couple of days. Continued dry weather and a slight cooling trend is expected for the weekend, although temperatures remain above normal.

DISCUSSION. A strong and highly amplified 2+ height anomaly ridge with a 5 to 10 year return interval will remain stationary over the W coastal states into Old Mexico through Fri before there is some weakening of the ridge over the weekend. The "Omega Block" is locked in place over Wrn NOAM by 2 long wave trofs, one over the Ern third of NOAM, and the other near 150W. This will result in well above normal temps with max temps some 14 to 22 degrees above normal today and widespread areas of moderate heat risk for this time of year. Given little movement is forecast with the high pressure cell over NV today, similar to yesterday, this will maintain the Ely and Nly pressure gradients and the Nly flow for another day. We do expect a gradual weakening of the Ely and Nly pressure gradients later in the day due to pressure falls from daytime heating.

Solano Co area likely to encounter another day triple digit temps and heat risk from the adiabatic warming effects from the Vaca Mtns. Record highs for Fairfield 104 set in 1952, and 104 at Vacaville Nut Tree Airport set in 2001, and 101 at Travis AFB in 1970 are possible. In fact, tying the record max at KSUU has a 70% chance of occurring according to our experimental NBM viewer. tying the record high potential is much lower in our other main climo areas with just 26% at KSCK (100 in 2001) and 17% at KRDD (104 in 2001). The wafting/drifting of wild fire smoke also adds to the uncertainty of establishing record temps.

Shifting of the high pressure cell to the west and over the Socal area on Fri will lessen the impact of Nly winds. Temps will not be quite as hot as today and this trend will continue on Sat as high pressure gradually weakens over the region. On Sun, onshore floor will provide some much needed relief with max temps cooling into the 80s in the Valley and mostly 60s and 70s in the high Sierra. This is up to 6 degrees above normal in the lower elevations and about 8 to 12 degrees above normal in the mountains. In addition, humidity recovery will remain poor to moderate over the higher terrain due to a strong subsidence inversion until the weekend.

Now that the calendar has turned to Oct 1, we begin a new water year today Happy new water year. hopefully it will be (b/w)etter than the last. JHM

EXTENDED DISCUSSION (Monday THROUGH Thursday).

GEFS and EC ensemble in general agreement weakening the persistent West Coast ridge and shifting it east by the middle of next week. Pattern will remain dry for NorCal with temperatures still around 10 degrees above average early in the week, returning to only slightly above average by Thursday.

AVIATION.

Widespread MVFR with local IFR conditions due to wildfire smoke expected across the Central Valley next 24 hours. Surface wind gusts generally under 12 kts except local northeast gusts 20-30 kts northern Sierra until 17Z.

STO WATCHES/WARNINGS/ADVISORIES. Heat Advisory from noon today to 8 PM PDT this evening for Carquinez Strait and Delta.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 13 mi45 min Calm G 1 83°F
SFXC1 - San Francisco Bay Reserve, CA 18 mi78 min ESE 1
PCOC1 - 9415144 - Port Chicago, CA 20 mi45 min ENE 7 G 7 80°F 70°F
UPBC1 24 mi45 min E 4.1 G 5.1
MZXC1 - 9415102 - Martinez-Amorco CA 24 mi45 min NE 4.1 G 5.1 76°F 70°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi45 min W 1.9 G 2.9 73°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi51 min SSW 2.9 G 2.9 76°F
LNDC1 40 mi45 min WSW 1 G 1.9 79°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 41 mi45 min NW 1.9 G 1.9 69°F
RCMC1 - 9414863 - Richmond, CA 41 mi51 min Calm G 1 73°F 65°F
OBXC1 42 mi45 min 71°F 55°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 42 mi45 min WSW 2.9 G 2.9
AAMC1 - 9414750 - Alameda, CA 42 mi45 min SW 1.9 G 1.9 74°F 68°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 44 mi45 min E 2.9 G 2.9 71°F
PXSC1 44 mi51 min 72°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 44 mi34 min Calm 74°F 1016 hPa
FTPC1 - 9414290 - San Francisco, CA 48 mi45 min ENE 5.1 G 5.1 72°F 63°F

Wind History for Port Chicago, CA
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Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fairfield / Travis Air Force Base, CA16 mi67 minNE 75.00 miSmoke84°F52°F33%1016.2 hPa
Vacaville Nut Tree Airport, CA21 mi70 minNNE 53.00 miFair with Haze87°F46°F25%1015.9 hPa
Concord, Buchanan Field, CA22 mi70 minN 05.00 miHaze Smoke87°F46°F25%1014.2 hPa

Link to 5 minute data for KSUU

Wind History from SUU (wind in knots)
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Last 24hrNW3CalmN4Calm--W9W10SW8S7S8SW8S9S10SW4SW4S5SW5SW6CalmCalmCalmNE5NE4NE7
1 day agoSW6W4N3CalmW5W11W9W10W10SW7SW9SW7W7W11SW12SW11SW11SW10SW9SW10SW9SW6CalmSW3
2 days agoNE16
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Tide / Current Tables for Rio Vista, Sacramento River, California
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Rio Vista
Click for Map
Thu -- 03:52 AM PDT     3.97 feet High Tide
Thu -- 06:43 AM PDT     Moonset
Thu -- 07:03 AM PDT     Sunrise
Thu -- 10:46 AM PDT     0.32 feet Low Tide
Thu -- 02:06 PM PDT     Full Moon
Thu -- 04:33 PM PDT     3.94 feet High Tide
Thu -- 06:48 PM PDT     Sunset
Thu -- 07:11 PM PDT     Moonrise
Thu -- 11:11 PM PDT     0.67 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.42.33.23.843.73.22.61.810.50.30.71.62.63.43.93.93.63.12.41.710.7

Tide / Current Tables for Point Sacramento .3 mi NE, Sacramento River, California Current
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Point Sacramento .3 mi NE
Click for Map
Thu -- 01:47 AM PDT     0.97 knots Max Flood
Thu -- 05:07 AM PDT     -0.00 knots Slack
Thu -- 06:44 AM PDT     Moonset
Thu -- 07:03 AM PDT     Sunrise
Thu -- 08:12 AM PDT     -0.95 knots Max Ebb
Thu -- 11:25 AM PDT     0.00 knots Slack
Thu -- 02:06 PM PDT     Full Moon
Thu -- 02:14 PM PDT     1.06 knots Max Flood
Thu -- 05:50 PM PDT     -0.00 knots Slack
Thu -- 06:49 PM PDT     Sunset
Thu -- 07:12 PM PDT     Moonrise
Thu -- 08:51 PM PDT     -0.89 knots Max Ebb
Thu -- 11:53 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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0.50.910.80.50.1-0.4-0.8-0.9-0.9-0.6-0.20.40.91.110.80.4-0.1-0.5-0.8-0.9-0.8-0.4

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
Ground Weather Radar Station Sacramento, CA
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weather_mapweather_map weather_map


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