Tuesday, April7, 2020
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Marine Weather and Tides
Hayward, 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 6:42AMSunset 7:38PM Tuesday April 7, 2020 6:44 PM PDT (01:44 UTC) Moonrise 6:27PMMoonset 5:51AM Illumination 100% Phase: Full Moon; Moon at 15 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- 230 Pm Pdt Tue Apr 7 2020
Rest of today..NW winds 10 to 20 kt with gusts up to 25 kt.
Tonight..W winds 10 to 20 kt with gusts up to 25 kt.
Wed..W winds up to 10 kt.
Wed night..SW winds up to 10 kt.
Thu..W winds around 5 kt.
Thu night..W winds up to 10 kt.
Fri..W winds up to 10 kt.
Sat..W winds up to 10 kt.
PZZ500 230 Pm Pdt Tue Apr 7 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light to locally moderate west to northwest winds will persist the rest of today and tonight as an upper low slowly exits the region. Locally breezy winds are expected this afternoon and evening over the Monterey bay and along the inner coastal waters from pigeon point to point pinos as well as overnight north of point reyes. A long period southwest and a long period west to northwest swell will continue into tomorrow before decreasing in period.


7 Day Forecast for Marine Location Near Hayward, CA
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location: 37.62, -122.15     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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FXUS66 KMTR 072358 AFDMTR

Area Forecast Discussion National Weather Service San Francisco Bay Area 458 PM PDT Tue Apr 7 2020

SYNOPSIS. Isolated to scattered rain showers will be possible over the Central Coast through midweek while mainly dry conditions prevail to the north. Temperatures will begin a gradual warming trend late in the week and into the upcoming weekend as conditions dry out region-wide.

DISCUSSION. as of 01:14 PM PDT Tuesday . Very light rainfall occurred over the far northern portions of Sonoma and Napa Counties earlier this morning as moisture continued to wrap around the mid/upper level low offshore. However, much of the region remains dry at this hour with an increase in cumulus given some daytime heating. Expecting some showers to begin to develop over interior portions of Monterey and San Benito Counties through the afternoon and potentially into the evening. Showers that do develop will move westward toward the coast and may impact valley and coastal locations. Thus, will continue to carry a slight chance of showers over much of the Central Coast through the afternoon, evening and even into late tonight.

Isolated to potentially scattered showers will remain possible over the southern portion of the region again on Wednesday and potentially into Thursday as the mid/upper level low off of the central and southern California coast slowly approaches the coast. This will also allow for seasonably cool conditions to persist over the southern areas while places such as the North Bay begin to experience a gradual warming trend through midweek. Mostly dry conditions will also prevail over the northern portion of the region through midweek.

The aforementioned mid/upper level low will push inland over southern California late in the week with conditions beginning to dry out region-wide. As it shifts inland this weekend, a warming trend is likely with more widespread mid/upper 60s near the coast and low/mid 70s over the interior. This trend is likely to extend into early next week as an upper level ridge builds just off of the West Coast.

AVIATION. as of 4:55 PM PDT Tuesday . Afternoon cumulus clouds have developed this afternoon with SCT-BKN bases around 5000 ft. As the upper level low moves into southern California tonight another band of showers will get close to the Mry Bay Area later tonight. Abundant low level moisture will allow for MVFR cigs to spread into the SFO Bay Area during the night.

Vicinity of KSFO . Scattered cumulus clouds decreasing early this evening. MVFR cigs returning after 08Z with bases around 2500 ft.

SFO Bridge Approach . Similar to KSFO.

Monterey Bay Terminals . Scattered cumulus clouds with lower cigs arriving after 08Z. Any precip should stay to the south.

MARINE. as of 04:48 PM PDT Tuesday . Generally light to locally moderate west to northwest winds will persist the rest of today and tonight as an upper low slowly exits the region. Locally breezy winds are expected this afternoon and evening over the Monterey Bay and along the inner coastal waters from Pigeon Point to Point Pinos as well as overnight north of Point Reyes. A long period southwest and a long period west to northwest swell will continue into tomorrow before decreasing in period.

MTR WATCHES/WARNINGS/ADVISORIES. Tngt. SCA . Mry Bay until 9 PM SCA . Pigeon Pt to Pt Pinos 0-10 nm until 9 PM SCA . Pt Arena to Pigeon Pt 10-60 nm from 9 PM SCA . Pt Arena to Pt Reyes 0-10 nm from 9 PM



PUBLIC FORECAST: RGass AVIATION: W Pi MARINE: AS

Visit us at www.weather.gov/sanfrancisco

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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 mi57 min 59°F
AAMC1 - 9414750 - Alameda, CA 13 mi57 min W 8 G 12 58°F 59°F1017.3 hPa
LNDC1 14 mi57 min W 9.9 G 14 58°F 1017.2 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi63 min W 15 G 18
OBXC1 16 mi57 min 57°F 46°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi57 min WNW 12 G 15 56°F 1017.2 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 18 mi57 min WSW 9.9 G 14 58°F 1016.5 hPa
PXSC1 18 mi57 min 58°F 46°F
FTPC1 - 9414290 - San Francisco, CA 21 mi57 min 60°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 23 mi57 min W 6 G 8 61°F 1017.5 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 25 mi65 min SSW 1.9 61°F 1017 hPa
RCMC1 - 9414863 - Richmond, CA 25 mi57 min WSW 2.9 G 4.1 60°F 57°F1016.9 hPa
46237 - San Francisco Bar, CA (142) 28 mi75 min 55°F4 ft
UPBC1 29 mi57 min WNW 7 G 9.9
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi57 min WNW 8 G 9.9 61°F 58°F1017 hPa
PCOC1 - 9415144 - Port Chicago, CA 31 mi57 min NNW 1.9 G 2.9 61°F 58°F1016.7 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi57 min W 5.1 G 7 61°F 1017 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 32 mi63 min NNW 6 G 8 63°F 1016.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 38 mi45 min NW 16 G 19 52°F 52°F1018.8 hPa (-1.6)
SFXC1 - San Francisco Bay Reserve, CA 41 mi120 min WSW 5.1
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi45 min NW 18 G 19 53°F 54°F1018.5 hPa47°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hayward, Hayward Air Terminal, CA3 mi51 minW 1510.00 miA Few Clouds60°F45°F58%1017.8 hPa
Oakland, Metro Oakland International Airport, CA7 mi52 minWNW 1310.00 miA Few Clouds62°F45°F54%1017.4 hPa
San Carlos Airport, CA8 mi56 minWNW 1110.00 miA Few Clouds59°F39°F48%1017.6 hPa
Palo Alto Airport, CA10 mi58 minNW 1410.00 miA Few Clouds61°F42°F52%1016.9 hPa
San Francisco, San Francisco International Airport, CA11 mi49 minW 1610.00 miA Few Clouds58°F44°F60%1017.4 hPa
Livermore, Livermore Municipal Airport, CA18 mi52 minN 610.00 miFair61°F39°F44%1016 hPa
Half Moon Bay Airport, CA20 mi50 minNNW 13 G 2110.00 miFair54°F46°F77%1017.9 hPa
San Jose, San Jose International Airport, CA21 mi52 minNW 1610.00 miA Few Clouds61°F44°F54%1016.2 hPa

Link to 5 minute data for KHWD

Wind History from HWD (wind in knots)
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Last 24hrNW5CalmCalmCalmCalmE5E5NE3NE6E5NE5NE4NE3NE3CalmN3CalmW7W9W10W11W12NW14W15
1 day agoW6W4W6N3CalmNE4NE6NE6E3E3NE6CalmNE5NE4NE6NE3CalmCalmSE83S4SW3CalmW6
2 days agoS5S6W7W5SW6SW6S3SE4E5SE8S5SE9SE8S8S11S9
G18
S8S6W6W7W7W5NW9W3

Tide / Current Tables for Alameda Creek, San Francisco Bay, California
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Alameda Creek
Click for Map
Tue -- 12:43 AM PDT     6.13 feet High Tide
Tue -- 06:44 AM PDT     Sunrise
Tue -- 06:50 AM PDT     Moonset
Tue -- 07:55 AM PDT     0.08 feet Low Tide
Tue -- 12:51 PM PDT     6.10 feet High Tide
Tue -- 07:27 PM PDT     Moonrise
Tue -- 07:35 PM PDT     Full Moon
Tue -- 07:37 PM PDT     Sunset
Tue -- 08:09 PM PDT     0.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.86.15.74.83.52.210.30.10.82.44.25.66.15.84.93.72.41.20.400.51.93.7

Tide / Current Tables for Little Coyote Pt 3.1 mi ENE, South San Francisco Bay, California Current
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Little Coyote Pt 3.1 mi ENE
Click for Map
Tue -- 12:05 AM PDT     -0.01 knots Slack
Tue -- 02:33 AM PDT     -0.93 knots Max Ebb
Tue -- 05:34 AM PDT     0.00 knots Slack
Tue -- 06:44 AM PDT     Sunrise
Tue -- 06:50 AM PDT     Moonset
Tue -- 08:47 AM PDT     0.87 knots Max Flood
Tue -- 12:24 PM PDT     -0.00 knots Slack
Tue -- 02:54 PM PDT     -0.95 knots Max Ebb
Tue -- 05:57 PM PDT     0.01 knots Slack
Tue -- 07:27 PM PDT     Moonrise
Tue -- 07:35 PM PDT     Full Moon
Tue -- 07:37 PM PDT     Sunset
Tue -- 09:06 PM PDT     0.85 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0-0.5-0.9-0.9-0.7-0.30.20.60.80.90.80.50.2-0.3-0.8-1-0.8-0.400.40.70.90.80.6

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 (21,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.