Sunday, April18, 2021
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Marine Weather and Tides
Newark, 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 6:27AMSunset 7:48PM Sunday April 18, 2021 2:30 PM PDT (21:30 UTC) Moonrise 9:45AMMoonset 12:15AM Illumination 44% Phase: First Quarter Moon; Moon at 7 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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PZZ531 San Francisco Bay South Of The Bay Bridge- 843 Am Pdt Sun Apr 18 2021
Today..W winds around 5 kt, increasing to 10 to 20 kt with gusts up to 25 kt this afternoon.
Tonight..W winds 10 to 20 kt with gusts up to 25 kt.
Mon..W winds 5 to 15 kt.
Mon night..W winds 10 to 20 kt with gusts up to 25 kt.
Tue..W winds 10 to 20 kt with gusts up to 25 kt.
Tue night..SW winds 5 to 15 kt.
Wed..W winds 5 to 15 kt.
Thu..W winds 5 to 15 kt.
PZZ500 843 Am Pdt Sun Apr 18 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Expect winds to gradually increase this afternoon and evening. Winds will then pick up further on Monday as a disturbance moves down from the pacific northwest into northern california. NEar gale force gusts may be possible over the northern waters by Tuesday morning. Elevated winds will persist through mid week. These winds will produce steep wind waves creating hazardous seas conditions, particularly for smaller vessels. Moderate northwest swell through the period along with a lighter longer period southerly swell.


7 Day Forecast for Marine Location Near Newark, CA
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location: 37.47, -122.07     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 182053 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 153 PM PDT Sun Apr 18 2021

SYNOPSIS. Interior temperatures will be well above normal today as ridging aloft continues. Slight cooling begins Monday, mainly in coastal areas. More widespread cooling is forecast for Tuesday as temperatures return to seasonal averages. Dry conditions persist through Friday with slight chances of rain next weekend.

DISCUSSION. as of 01:50 PM PDT Sunday . Today is a great example of weather at the coast vs weather across the interior. The shallow marine layer from this morning did erode from the interior spots, but it continues to persist at the coast. Ample insolation has led to a nice warm up across the interior with afternoon temperatures in the 70s and 80s. Max temperatures will likely top out 10-15 degrees above normal for this time year. At the coast is a different story where temperatures are still struggling to reach 60 degrees. In fact, the temperatures sensors on Pt Reyes are barely in the 50s BRRRR. definitely a jacket day at the coast. A few coastal spots may come up a few degrees short of the forecasted high temperature.

For tonight, the amplified ridge overhead will begin to weaken and shift eastward. The shallow marine layer lingering at the coast will move inland, likely farther inland the last night. Patchy fog will also be possible given the shallow nature.

To kick off the work week, morning clouds to start, but afternoon sunshine away from the coast. Temperatures away from the coast will still be above normal, but a little cooler than Sunday's high temps. Coastal locations will still be cool with lingering clouds.

The ridge flattens even more and focus begins to shift northward as an upper low develops off the PacNW Coast. This low will deepen more and beeline it for CA Tuesday into Wednesday. Latest guidance suggest enough moisture and instability will be present to generate a few showers and maybe a thunderstorm across portions of NorCal. The question is, any showers for the Bay Area? Hi-res model develop precip of the Yolla-Bolly Mts of Lake Cty, but they quickly fall apart before reaching the North Bay. In other words, there is an outside chance for N Bay showers, but it is low. Forecast is dry for now. Another upper low sweeps across the region on Wednesday into Thursday, but this system looks mostly dry as well. Regardless of precip the passing upper low will bring widespread cooling to the region.

Temperatures rebound a little by Friday into next weekend thanks to some ridging overhead. A more notable pattern change is still being advertise in the extended as an decent low pressure system drops in from the Gulf of Alaska. Deterministic and ensemble guidance have been honing in on increasing chances for precip next Sunday into the following week. Details will likely change between now and then, but at least there is rain chances in the forecast.

AVIATION. As of 11:30 AM PDT Sunday . For the 18Z TAFs. VFR at most all sites. The marine layer is hugging the coast, but will start to mix out as stronger winds build in over the waters this afternoon. Onshore winds will be lighter for the inland terminals, and mildly breezy for the coastal terminals this afternoon with more moderate winds at KSFO around 00Z. Skies will be SKC-FEW250 this afternoon and evening. The marine layer will return tonight around 08-10Z. KMRY/KSNS will see SCT008 start to advect inland around 03Z, reaching MVFR/IFR conditions around 08Z. Higher confidence in most sites returning to VFR by 17Z Monday.

Vicinity of KSFO . VFR with some low clouds along the coast west of the airport. Onshore winds will increase this afternoon to around 15-20 kt. Models and guidance show the potential for low clouds to move further inland late tonight, brining MVFR conditions from 10-16Z Monday morning. Winds will become more breezy Monday afternoon, with higher chances of G20-25kts.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . VFR conditions prevailing through this evening. Low clouds returning tonight will give MVFR/IFR conditions to KMRY/KSNS from 08-16Z. Lower chance for vis drops <1SM or +FG like was seen this morning. Light winds this morning increasing and turning onshore this afternoon. Onshore winds will become breezy Monday afternoon.

MARINE. as of 10:47 AM PDT Sunday . Expect winds to gradually increase this afternoon and evening. Winds will then pick up further on Monday as a disturbance moves down from the Pacific Northwest into northern California. Near gale force gusts may be possible over the northern waters by Tuesday morning. Elevated winds will persist through mid week. These winds will produce steep wind waves creating hazardous seas conditions, particularly for smaller vessels. Moderate northwest swell through the period along with a lighter longer period southerly swell.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Pigeon Pt to Pt Pinos 0-10 nm until 3 AM SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm from 6 PM until 3 AM SCA . Pt Reyes to Pigeon Pt 0-10 nm from 9 PM



PUBLIC FORECAST: MM AVIATION: Dhuyvetter MARINE: Dhuyvetter

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 8 mi43 min W 6 G 8 77°F 1020 hPa
AAMC1 - 9414750 - Alameda, CA 24 mi43 min W 7 G 9.9 65°F 60°F1019.9 hPa
LNDC1 25 mi43 min WSW 6 G 8 68°F 1019.5 hPa
OBXC1 27 mi43 min 63°F 51°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 27 mi43 min W 7 G 9.9
OKXC1 - 9414776 - Oakland (Berth 34), CA 27 mi49 min NW 7 G 8.9 59°F 1019.7 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 28 mi43 min SW 5.1 G 9.9 68°F 1018.6 hPa
PXSC1 29 mi49 min 64°F 50°F
FTPC1 - 9414290 - San Francisco, CA 31 mi43 min WSW 16 G 21 52°F 59°F1020.2 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 34 mi49 min SSW 9.9 G 13 59°F 1020.1 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 35 mi50 min E 1.9 70°F 1019 hPa
RCMC1 - 9414863 - Richmond, CA 36 mi55 min SE 2.9 G 5.1 64°F 59°F1019.4 hPa
46237 - San Francisco Bar, CA (142) 37 mi61 min 55°F4 ft
46269 37 mi61 min 49°F 55°F3 ft
UPBC1 39 mi49 min WNW 1 G 2.9
MZXC1 - 9415102 - Martinez-Amorco CA 39 mi43 min W 5.1 G 6 77°F 61°F1018.8 hPa
PCOC1 - 9415144 - Port Chicago, CA 41 mi43 min W 4.1 G 5.1 80°F 61°F1018.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 41 mi43 min NW 4.1 G 7 81°F 1018.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 42 mi49 min W 6 G 8 68°F 1018.7 hPa
CQUC1 42 mi48 min 60°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi21 min NNW 16 G 19 48°F 1021.5 hPa47°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 45 mi21 min NW 14 G 18 50°F1021.4 hPa
MLSC1 - Moss Landing, South Harbor, CA 48 mi35 min 54°F
ELXC1 - Elkhorn Slough Reserve, CA 49 mi46 min W 8 57°F 1023 hPa52°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palo Alto Airport, CA3 mi44 minNNW 910.00 miClear79°F43°F28%1019.3 hPa
San Jose, San Jose International Airport, CA10 mi38 minNW 710.00 miFair81°F39°F22%1018.6 hPa
San Carlos Airport, CA10 mi35 minNNW 510.00 miClear82°F27°F13%1019.3 hPa
Hayward, Hayward Air Terminal, CA13 mi37 minWNW 910.00 miFair78°F41°F27%1019.9 hPa
San Jose / Reid / Hillv, CA16 mi44 minNNW 310.00 miClear81°F39°F23%1019 hPa
Oakland, Metro Oakland International Airport, CA18 mi38 minWNW 710.00 miA Few Clouds73°F47°F40%1019.5 hPa
San Francisco, San Francisco International Airport, CA19 mi35 minWNW 1810.00 miA Few Clouds and Breezy68°F48°F49%1019.3 hPa
Livermore, Livermore Municipal Airport, CA21 mi38 minSW 710.00 miFair84°F22°F10%1018 hPa
Half Moon Bay Airport, CA23 mi36 minNW 116.00 miFog/Mist54°F48°F82%1021.3 hPa

Link to 5 minute data for KPAO

Wind History from PAO (wind in knots)
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Last 24hrNW12NW15N15NW17NW15NW10NW6------------------4CalmCalm43N7N8NW9
1 day agoNW13NW14N19--NW16NW9NW6------------------44----N7N11N12NW12
2 days agoN15N16N14NW13N12N9NW12------------------CalmCalmCalm45----N12

Tide / Current Tables for Calaveras Point, west of, San Francisco Bay, California
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Calaveras Point
Click for Map
Sun -- 01:14 AM PDT     Moonset
Sun -- 04:35 AM PDT     7.75 feet High Tide
Sun -- 06:28 AM PDT     Sunrise
Sun -- 10:44 AM PDT     Moonrise
Sun -- 12:31 PM PDT     0.27 feet Low Tide
Sun -- 07:46 PM PDT     Sunset
Sun -- 08:02 PM PDT     6.72 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.54.25.36.67.67.77.36.34.93.41.90.90.30.412.13.44.75.86.56.76.45.44.4

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Sun -- 01:15 AM PDT     Moonset
Sun -- 02:30 AM PDT     0.48 knots Max Flood
Sun -- 04:52 AM PDT     -0.00 knots Slack
Sun -- 06:28 AM PDT     Sunrise
Sun -- 10:17 AM PDT     -0.99 knots Max Ebb
Sun -- 10:44 AM PDT     Moonrise
Sun -- 01:13 PM PDT     0.00 knots Slack
Sun -- 04:01 PM PDT     0.88 knots Max Flood
Sun -- 07:46 PM PDT     Sunset
Sun -- 07:48 PM PDT     -0.00 knots Slack
Sun -- 11:04 PM PDT     -0.34 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.30.40.40.3-0-0.2-0.4-0.7-0.9-1-0.9-0.5-0.10.40.70.90.80.60.3-0-0.2-0.3-0.3

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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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