Saturday, April10, 2021
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Marine Weather and Tides
Antioch, CA

Version 3.4
NOTICE
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 6:36AMSunset 7:40PM Saturday April 10, 2021 4:20 AM PDT (11:20 UTC) Moonrise 5:22AMMoonset 5:31PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 254 Am Pdt Sat Apr 10 2021
.small craft advisory in effect from this afternoon through this evening...
Today..SW winds 5 to 15 kt.
Tonight..SW winds 5 to 15 kt with gusts up to 25 kt.
Sun..SW winds 5 to 15 kt.
Sun night..SW winds 5 to 15 kt.
Mon..SW winds 10 to 20 kt with gusts up to 25 kt.
Mon night..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue..W winds 5 to 15 kt.
Wed..W winds 5 to 10 kt.
PZZ500 254 Am Pdt Sat Apr 10 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate to locally strong northwest winds across the waters today, with gale force winds forecast across the northern waters from the golden gate gap northward and south of point sur. These gusty winds will generate steep to very steep wind waves at 8 to 10 seconds today. A moderate northwest swell of 3 to 6 feet at 12 to 14 seconds will arrive late this weekend and merge with the steep wind waves. Together, steep to very steep combined seas of 12 to 18 feet at 10 to 12 seconds are possible Sunday and Monday. Novice mariners and sailors should Monitor forecasts closely or consider staying in harbor over the coming days as gale force winds and steep seas continue.


7 Day Forecast for Marine Location Near Antioch, CA
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location: 38.03, -121.82     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 100945 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 245 AM PDT Sat Apr 10 2021

SYNOPSIS. Continued dry and warm conditions are forecast to prevail through the weekend and into next week. Periods of breezy conditions are expected tomorrow, as well as early next week.

DISCUSSION. Infrared satellite imagery reveals clear skies over interior northern California this early Saturday morning while marine stratus blankets the coast and portions of the Bay Area. Fort Ord profiler near Monterey indicates the marine layer is just north of 2,000 ft deep, and combined with healthy onshore flow (SFO to SAC surface pressure gradient at +3.0 mb, and decreasing) can't rule out some stratus pushing into the Delta by sunrise Saturday. HREF is rather bullish with painting rather high probabilities of ceilings making inland as far as the Sacramento area, but due to the dry airmass, think any stratus in the Valley would be patchy at most.

Dry, northwest flow aloft with upper level ridging just west of the California coast will support continued above-normal temperatures again for the region on Saturday afternoon. Valley highs will max out in the upper 70s to low 80s, or about 5 to 10 deg F above early April normals.

Surface high pressure will build in Oregon on Sunday, promoting the development of north-to-south surface pressure gradients over northern California. This will result in increased northerly winds across portions of the area on Sunday, particularly in the northern Sacramento Valley, as well as the wind-prone westside of the Valley (generally along and west of the I-5). Peak winds gusts will generally be in the 20 to 30 mph range, but can't rule out some isolated higher gusts.

Shortwave through will drop south from the Pacific Northwest around Tuesday-Wednesday next week. While there remains some uncertainty with respect to the timing and placement, this type of synoptic setup would expect favor increased north / east winds for northern California, as well as a slight chance for mountain showers. The National Blend of Models presently gives the Sierra about a 10 to 20 percent chance of precipitation during this period.

While it is only April, will note that wildland fuels are significantly drier compared to climatology. The Energy Release Components (ERCs) for the Sacramento Valley/Foothills is near- record level for this time of year. The absence of precipitation along with dry winds will allow fuels to continue to dry out over the coming days. // Rowe

EXTENDED DISCUSSION (Wednesday THROUGH Saturday). Large upper low centered in the Great Basin Wednesday with embedded vort lobes rotating through the CWA. Moisture looks limited, however enough dynamics to support a threat of showers over the higher terrain of Western Plumas and northern Sierra Nevada. Some breezy north to east continues into Wednesday morning.

Models diverge with handling of this feature late next week into the weekend. Main message is low elongates W-E Thursday into Friday as it slowly fills, with placement of the low varying. Short wave trough progged across northern portions of the CWA late Friday into Saturday where some light showers may occur over the Shasta and Western Plumas mountains. Slow warming trend with above normal high temperatures expected through the extended forecast period.

AVIATION. VFR conds ovr intr NorCal nxt 24 hrs. Vcnty of Delta, sfc wnd gsts to 25 kts poss attm, otrw sfc wnds genly AOB 12 kts.

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 4 mi51 min W 8 G 15 50°F 1018.2 hPa
PCOC1 - 9415144 - Port Chicago, CA 12 mi51 min SW 11 G 14 47°F 59°F1019.1 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 16 mi51 min SSW 5.1 G 7 48°F 60°F1019.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 16 mi96 min W 9.9 47°F 1020 hPa43°F
UPBC1 16 mi51 min WSW 8 G 12
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 24 mi51 min W 8.9 G 12 50°F 1019.3 hPa
LNDC1 29 mi51 min W 4.1 G 6 49°F 1019.9 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 30 mi51 min NE 2.9 G 5.1 50°F 1020 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 31 mi51 min W 8 G 11 49°F 1019.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 31 mi51 min W 11 G 13
AAMC1 - 9414750 - Alameda, CA 31 mi51 min W 7 G 11 49°F 59°F1020.2 hPa
OBXC1 32 mi51 min 49°F 45°F
RCMC1 - 9414863 - Richmond, CA 32 mi51 min W 1.9 G 4.1 49°F 57°F1019.7 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 34 mi51 min W 7 G 12 48°F 1018.7 hPa
PXSC1 34 mi51 min 49°F 45°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 35 mi70 min Calm 46°F 1020 hPa
FTPC1 - 9414290 - San Francisco, CA 38 mi51 min W 6 G 7 47°F 54°F1019.9 hPa
RTYC1 - 9414523 - Redwood City, CA 42 mi51 min SW 4.1 G 8 49°F 69°F1021.5 hPa
46237 - San Francisco Bar, CA (142) 46 mi51 min 49°F6 ft

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA13 mi28 minSSW 1110.00 miFair with Haze48°F41°F77%1017.8 hPa
Fairfield / Travis Air Force Base, CA18 mi23 minSW 1710.00 miFair46°F40°F82%1018.6 hPa
Livermore, Livermore Municipal Airport, CA23 mi28 minWSW 610.00 miOvercast48°F41°F77%1019.5 hPa

Link to 5 minute data for KCCR

Wind History from CCR (wind in knots)
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Tide / Current Tables for Antioch, San Joaquin River, California
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Antioch
Click for Map
Sat -- 03:40 AM PDT     3.67 feet High Tide
Sat -- 06:21 AM PDT     Moonrise
Sat -- 06:38 AM PDT     Sunrise
Sat -- 10:02 AM PDT     0.38 feet Low Tide
Sat -- 03:41 PM PDT     3.23 feet High Tide
Sat -- 06:31 PM PDT     Moonset
Sat -- 07:38 PM PDT     Sunset
Sat -- 10:07 PM PDT     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.32.233.63.63.32.61.91.20.60.40.61.222.73.13.22.92.31.610.50.30.5

Tide / Current Tables for Antioch Pt .3 mi E, San Joaquin River, California Current
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Antioch Pt .3 mi E
Click for Map
Sat -- 03:05 AM PDT     1.61 knots Max Flood
Sat -- 05:42 AM PDT     -0.00 knots Slack
Sat -- 06:21 AM PDT     Moonrise
Sat -- 06:38 AM PDT     Sunrise
Sat -- 08:54 AM PDT     -1.43 knots Max Ebb
Sat -- 12:06 PM PDT     0.00 knots Slack
Sat -- 03:06 PM PDT     1.38 knots Max Flood
Sat -- 05:32 PM PDT     -0.00 knots Slack
Sat -- 06:31 PM PDT     Moonset
Sat -- 07:39 PM PDT     Sunset
Sat -- 08:51 PM PDT     -1.40 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.211.41.61.40.7-0.2-0.8-1.3-1.4-1.2-0.7-0.10.71.21.41.20.5-0.3-0.9-1.3-1.4-1.2-0.8

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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