Wednesday, April1, 2020
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Marine Weather and Tides
Fremont, CA

Version 3.4
NOTICE
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 6:50AMSunset 7:32PM Wednesday April 1, 2020 1:33 AM PDT (08:33 UTC) Moonrise 11:23AMMoonset 1:36AM Illumination 58% Phase: First Quarter Moon; Moon at 8 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- 834 Pm Pdt Tue Mar 31 2020
Tonight..NW winds 10 to 20 kt.
Wed..NW winds 15 to 20 kt with gusts up to 25 kt.
Wed night..NW winds 5 to 15 kt.
Thu..NW winds 10 to 20 kt with gusts up to 25 kt.
Thu night..NW winds 5 to 15 kt.
Fri..NW winds 5 to 15 kt with gusts up to 25 kt.
Fri night..W winds 5 to 10 kt.
Sat..SW winds 5 to 10 kt. A chance of rain.
Sun..S winds 5 to 10 kt. A chance of rain.
PZZ500 834 Pm Pdt Tue Mar 31 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwesterly winds strengthen Wednesday as a low pressure system over the pacific northwest moves inland, providing gale force winds. A prevailing mixed swell with a building short period and steep northwest swell and a light southwesterly swell will continue through the week.


7 Day Forecast for Marine Location Near Fremont, CA
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location: 37.45, -121.96     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 010543 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 1043 PM PDT Tue Mar 31 2020

SYNOPSIS. Dry weather conditions with seasonable temperatures are forecast for the remainder of the week. Rain chances and cooler temperatures return by the upcoming weekend and will potentially continue into early next week.

DISCUSSION. as of 9:10 PM PDT Tuesday . An upper low near Vancouver Island ushered in a moderate northwest flow over northern California. Upper level high off the central and southern California coasts brought lighter winds and warm temperatures to the southern half of the state. Inland highs today warmed into the low to mid 70s from the Santa Clara Valley south. Low clouds kept things cooler around the Bay Area except for some adiabatic warming in the North Bay valleys.

The upper low will shift south tonight and Tuesday. This will strengthen the northwest flow which will help to clear out the low clouds later tonight. Cooler temperatures are expected Wednesday followed by warmer weather Thursday and Friday as the low moves inland.

Models continue to indicate a fast moving storm system on Saturday followed by a stronger system on Sunday. Models coming into better agreement on timing of the first system with rain spreading into the North Bay Saturday morning and into the Monterey Bay Area Saturday afternoon. There could be a short break Saturday night before the second system arrives on Sunday with unsettled weather into Monday. In terms of total QPF amounts The GFS is a little wetter than the ECMWF. Forecast amounts Saturday through Monday are 1/2 to 1 inch across the area with 1-2 inches in the mountains and parts of the North Bay . and less amounts in southern Monterey and San Benito counties. Beyond that longer range models show dry weather returning.

AVIATION. as of 10:42 PM PDT Tuesday . for 06z TAFs. A patch of stratus moving over the ocean is providing lower cigs, but at this time it is moving south of the Bay Area and towards the Monterey Bay. A few midlevel clouds will linger overnight, but generally MVFR/VFR conditions is forecast. Onshore winds continue to be breezy and guidance is now suggesting little abatement overnight. In fact, stronger winds and gusts that are forecast for Wednesday afternoon look to be coming in sooner than originally forecast. Cigs will lift by the late morning for VFR through Wednesday.

Vicinity of KSFO . Onshore winds remain breezy around 12-15 knots with an occasional stronger gust. Now that the stratus has pushed south, cigs should remain above 1,000 feet into the morning. Winds will pick up and is now forecast a little sooner than originally anticipated providing stronger gusts at 20-25 kts Wednesday morning. Cigs will continue to lift through the morning for VFR all Wednesday.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . A patch of stratus is moving over the peninsula and will continue to move south over the next couple hours, lowering cigs and thickening cloud cover. Winds are onshore and locally breezy and should continue through the evening. Wednesday is forecast to be VFR with stronger onshore winds, not easing until the evening.

MARINE. as of 8:34 PM PDT Tuesday . Northwesterly winds strengthen Wednesday as a low pressure system over the Pacific Northwest moves inland, providing gale force winds. A prevailing mixed swell with a building short period and steep northwest swell and a light southwesterly swell will continue through the week.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Mry Bay SCA . Pigeon Pt to Pt Pinos 0-10 nm SCA . Pt Arena to Pt Reyes 0-10 nm SCA . Pt Pinos to Pt Piedras Blancas 0-10 nm SCA . Pt Arena to Pigeon Pt 10-60 nm SCA . Pt Reyes to Pigeon Pt 0-10 nm SCA . Pigeon Pt to Pt Piedras Blancas 10-60 nm



PUBLIC FORECAST: W Pi AVIATION: DK MARINE: DK

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 14 mi45 min W 8 G 9.9 54°F 61°F1018.2 hPa
AAMC1 - 9414750 - Alameda, CA 29 mi45 min W 6 G 7 55°F 60°F1017.5 hPa
LNDC1 29 mi45 min NW 5.1 G 7 55°F 1017.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 31 mi51 min WNW 2.9 G 5.1
OKXC1 - 9414776 - Oakland (Berth 34), CA 32 mi45 min NW 5.1 G 6 55°F 1017.5 hPa
OBXC1 32 mi45 min 55°F 52°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 33 mi45 min WSW 6 G 8.9 54°F 1016.5 hPa
PXSC1 34 mi45 min 55°F 51°F
FTPC1 - 9414290 - San Francisco, CA 36 mi45 min 59°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 38 mi45 min WNW 9.9 G 15 55°F 1017.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi47 min Calm 51°F 1017 hPa
RCMC1 - 9414863 - Richmond, CA 40 mi45 min NW 8 G 9.9 54°F 57°F1017.3 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi45 min W 23 G 27 55°F 58°F1016.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 41 mi51 min W 8.9 G 13 55°F 1016.2 hPa
UPBC1 42 mi45 min WNW 26 G 32
PCOC1 - 9415144 - Port Chicago, CA 42 mi45 min WSW 13 G 17 55°F 58°F1016.4 hPa
46237 - San Francisco Bar, CA (142) 43 mi63 min 56°F5 ft
ELXC1 - Elkhorn Slough Reserve, CA 45 mi108 min Calm 53°F 1031 hPa52°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 45 mi45 min NW 16 G 18 55°F 1016.9 hPa
MLSC1 - Moss Landing, South Harbor, CA 46 mi60 min Calm G 1 53°F 1017.7 hPa51°F
46092 - MBM1 48 mi65 min NW 14 55°F 56°F1016.8 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 49 mi33 min NNW 21 G 25 54°F 56°F1018.9 hPa46°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose, San Jose International Airport, CA6 mi40 minN 010.00 miA Few Clouds53°F46°F80%1017.6 hPa
Palo Alto Airport, CA9 mi4.8 hrsWNW 1310.00 miA Few Clouds55°F48°F77%1019 hPa
San Jose / Reid / Hillv, CA11 mi3.7 hrsNNW 710.00 miMostly Cloudy55°F50°F82%1019.3 hPa
San Carlos Airport, CA16 mi38 minW 910.00 miFair54°F46°F77%1017.9 hPa
Hayward, Hayward Air Terminal, CA17 mi39 minN 010.00 miMostly Cloudy53°F48°F83%1018.3 hPa
Livermore, Livermore Municipal Airport, CA19 mi40 minSW 710.00 miFair51°F48°F89%1016.8 hPa
Oakland, Metro Oakland International Airport, CA22 mi40 minW 1010.00 miA Few Clouds56°F50°F81%1017.5 hPa
San Francisco, San Francisco International Airport, CA24 mi37 minW 1610.00 miFair53°F46°F77%1017.5 hPa

Link to 5 minute data for KNUQ

Wind History from NUQ (wind in knots)
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Last 24hr------------------------------------------------
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Coyote Creek, Tributary #1, San Francisco Bay, California
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Coyote Creek
Click for Map
Wed -- 02:14 AM PDT     3.00 feet Low Tide
Wed -- 02:36 AM PDT     Moonset
Wed -- 03:21 AM PDT     First Quarter
Wed -- 06:46 AM PDT     7.68 feet High Tide
Wed -- 06:52 AM PDT     Sunrise
Wed -- 12:22 PM PDT     Moonrise
Wed -- 03:25 PM PDT     -0.11 feet Low Tide
Wed -- 07:31 PM PDT     Sunset
Wed -- 10:00 PM PDT     6.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.33.433.34.35.97.37.77.46.65.442.51.30.4-0.100.92.33.85.36.46.86.5

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
Wed -- 01:56 AM PDT     0.00 knots Slack
Wed -- 02:36 AM PDT     Moonset
Wed -- 03:21 AM PDT     First Quarter
Wed -- 04:27 AM PDT     0.53 knots Max Flood
Wed -- 06:52 AM PDT     Sunrise
Wed -- 07:01 AM PDT     -0.00 knots Slack
Wed -- 12:08 PM PDT     -1.04 knots Max Ebb
Wed -- 12:23 PM PDT     Moonrise
Wed -- 03:08 PM PDT     0.00 knots Slack
Wed -- 06:00 PM PDT     1.04 knots Max Flood
Wed -- 07:31 PM PDT     Sunset
Wed -- 09:32 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.200.30.50.50.30-0.2-0.5-0.7-0.9-1-0.9-0.5-0.10.50.9110.70.3-0.1-0.3

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
Wind Forecast for San Francisco/Monterey Bay Area, CA (4,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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