Tuesday, January23, 2018 L-36.com


Marine Weather and Tides
Hayward, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:17AMSunset 5:23PM Monday January 22, 2018 11:46 PM PST (07:46 UTC) Moonrise 10:35AMMoonset 10:56PM Illumination 40% Phase: Waxing Crescent; Moon at 6 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 San Francisco Bay North Of The Bay Bridge- 844 Pm Pst Mon Jan 22 2018
Tonight..NE winds 10 kt. Patchy fog after midnight.
Tue..NE winds 10 kt. Patchy fog in the morning.
Tue night..NE winds 10 kt.
Wed..SE winds 5 to 15 kt. Rain in the afternoon.
Wed night..SW winds 15 to 25 kt. Rain likely in the evening, then chance of showers after midnight.
Thu..SW winds 5 to 15 kt. Chance of showers, then slight chance of showers.
Fri..NW winds 10 kt.
Sat..N winds 5 kt.
PZZ500 844 Pm Pst Mon Jan 22 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A 1028 mb high centered 550 miles west of pt conception will bring light northwest winds to the coastal waters tonight. Southerly winds will develop over the northern waters Tuesday ahead of the next frontal system. Southerly winds will increase over the waters Wednesday then switch to moderate northwest Wednesday night after thge front goes by.

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 230602
afdmtr
area forecast discussion
national weather service san francisco bay area
1002 pm pst Mon jan 22 2018

Synopsis Anticipate partly cloudy skies tonight with patchy
fog developing in the valleys. Dry and seasonably cool weather
forecast Tuesday. Next front arrives weds morning or midday in the
north bay and then spreads rain southward later weds afternoon
into weds night for the bay area into the central coast. Steady
rain quickly turns to showers before sunrise Thursday. A round of
more organized showers is possible Thursday afternoon as the upper
low moves inland. Dry weather forecast Friday through the weekend
and into early next week.

Discussion As of 8:41 pm pst Monday... Showers across the
southern portion of the forecast area have dissipated however
abundant low level moisture persist. Satellite imagery reveals
cloudy conditions across the north and east bay to patchy clouds
anchored over the hill south of the bay area. The main concern for
tonight remains the possibility of fog development due to the
moist boundary layer and a strengthening inversion as result of a
building area of high pressure over the region.

Tuesday will bring a return of mild and dry weather after the morning
fog burns off. High clouds are anticipated to increase as the next
storm system approaches from the northwest. The forecast remains
on track... No updates expected.

From previous discussion... Run of the mill pacific frontal
passage on tap for weds. As has been the trend of late, the models
seem to be showing a less robust frontal passage. Latest timing
would bring steady frontal rains into the north bay later weds
morning or around midday. Front will then slide southward through
the bay area weds afternoon and evening. Similar to todays front,
the rain will weaken and become more disorganized by the time it
reaches the central coast. The north bay coastal hills will be the
winners once again with 1-2 inches of rain possible while amounts
will drop off sharply over the bay area and central coast. Winds
associated with the front will be fairly light too, some gusts in
the 25-35 mph range as the front passes through.

Any steady rain will quickly turn to showers before sunrise
Thursday. Cold air aloft and an associated shortwave are forecast
to pass through on Thursday afternoon. This should produce an
organized area of rain and isolated thunderstorms, especially
focused from about the santa cruz mtns northward. Some brief heavy
rain and small hail will be possible as this feature passes
through.

Dry weather returns Thursday night into Friday. Latest model
trends show above average confidence for dry conditions Friday
through the weekend and into early next week. Some of the gfs
solutions keep the storm track just to our north but ensembles
suggest another west coast ridge could become entrenched so the
wed-thu rain may be the last significant rainfall for awhile.

Aviation As of 10:00 pm pst Monday... Latest satellite imagery
shows clouds over the east and south bay spreading into the rest
of the sfo bay area under light northeast flow. Ceiling heights
mostly around 4000 feet but a couple of METAR sites are reporting
2200 foot. With abundanct low level moisture... CIGS are expected
to lower to 1000-1500 feet as the night wares on. There is some
concern about fog getting into sfo and oak as northeast flow
advects moisture from the valleys. But chances of that are low
since cloudcover should keep temperatures up. Low Sun angle will
result in slow clearing of the clouds so expect CIGS to be in
through early afternoon.

Vicinity of ksfo... MVFR CIGS after 08z. There is a small chance
that vsbys will drop down to 3-5 miles between 12z and 17z. Light
northeast winds.

Sfo bridge approach... CIGS over the east and south bay will spread
over the rest of the approach. CIGS lowering to MVFR range after
12z.

Monterey bay terminals... MVFR CIGS have redeveloped over the
salinas valley and will be spreading into mry. MVFR CIGS will then
last until 20z.

Marine As of 10:00 pm pst Monday... A 1028 mb high centered 550
miles west of pt conception will bring light northwest winds to
the coastal waters tonight. Southerly winds will develop over the
northern waters Tuesday ahead of the next frontal system.

Southerly winds will increase over the waters Wednesday then
switch to moderate northwest Wednesday night after thge front goes
by.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar
public forecast: cw
aviation: W pi
marine: W pi
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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 mi47 min NW 6 G 7 51°F 55°F1027.5 hPa (+0.9)
AAMC1 - 9414750 - Alameda, CA 13 mi47 min SSE 1 G 4.1 50°F 55°F1027.2 hPa (+1.0)
LNDC1 14 mi53 min NE 6 G 9.9 51°F 1027.1 hPa
OBXC1 16 mi47 min 51°F 46°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 16 mi47 min E 2.9 G 2.9
OKXC1 - 9414776 - Oakland (Berth 34), CA 16 mi47 min N 5.1 G 6 50°F 1027.1 hPa (+0.7)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 18 mi47 min N 7 G 8 50°F 1026.2 hPa (+0.7)
PXSC1 18 mi47 min 51°F 47°F
FTPC1 - 9414290 - San Francisco, CA 21 mi47 min N 8 G 9.9 50°F 53°F1027.1 hPa (+0.4)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 23 mi47 min NE 8 G 8.9 50°F 1027.3 hPa (+0.5)
RCMC1 - 9414863 - Richmond, CA 25 mi47 min ENE 4.1 G 8 50°F 53°F1026.8 hPa (+0.6)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 25 mi53 min WNW 2.9 48°F 1027 hPa
46237 - San Francisco Bar, CA (142) 28 mi47 min 53°F9 ft
MZXC1 - 9415102 - Martinez-Amorco CA 29 mi47 min ESE 2.9 G 6 48°F 51°F1027.8 hPa (+0.7)48°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 31 mi53 min SSE 1.9 G 2.9 48°F 1027.4 hPa
PCOC1 - 9415144 - Port Chicago, CA 31 mi47 min E 5.1 G 6 48°F 51°F1027.7 hPa (+0.8)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 32 mi47 min Calm G 1 50°F 1027.8 hPa (+0.7)
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 38 mi57 min E 7.8 G 12 51°F 54°F9 ft1026.9 hPa (+0.6)
SFXC1 - San Francisco Bay Reserve, CA 41 mi62 min WSW 1.9 42°F 1027 hPa41°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 43 mi57 min N 9.7 G 12 53°F 56°F11 ft1026.3 hPa (+0.4)

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hayward, Hayward Air Terminal, CA3 mi53 minNE 710.00 miOvercast50°F41°F71%1028 hPa
Oakland, Metro Oakland International Airport, CA7 mi54 minN 710.00 miOvercast49°F45°F86%1027.3 hPa
San Carlos Airport, CA8 mi52 minNW 410.00 miOvercast50°F46°F88%1027.4 hPa
Palo Alto Airport, CA10 mi3 hrsWNW 510.00 miPartly Cloudy46°F44°F93%1026.4 hPa
San Francisco, San Francisco International Airport, CA11 mi51 minNE 410.00 miMostly Cloudy52°F44°F75%1027 hPa
Mountain View, Moffett Field, CA14 mi51 minW 510.00 miOvercast50°F45°F83%1027.2 hPa
Livermore, Livermore Municipal Airport, CA18 mi54 minE 310.00 miOvercast48°F45°F89%1026.9 hPa
Half Moon Bay Airport, CA20 mi52 minNE 68.00 miFair48°F46°F94%1025.7 hPa
San Jose, San Jose International Airport, CA21 mi54 minWSW 410.00 miPartly Cloudy50°F45°F83%1026.5 hPa

Wind History from HWD (wind in knots)
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Last 24hrSE8SE8SE10SE9SE8SE8SE8SE11SE10S8S8S55NW6W8W6W7W8N3NE5N5NE4NE4NE7
1 day agoCalmE4E4E3E3E5NE3E4E3SE4S6SE4E3W5W4CalmSW4SW4S3S4SE4SE3S6SE8
2 days agoCalmCalmCalmE3CalmE4CalmE4CalmCalmNW6W56W7W7W8W6W5W4NW4NE5E3E3NE3

Tide / Current Tables for San Mateo Bridge (east end), San Francisco Bay, California
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San Mateo Bridge (east end)
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Tue -- 04:46 AM PST     7.18 feet High Tide
Tue -- 07:18 AM PST     Sunrise
Tue -- 11:07 AM PST     Moonrise
Tue -- 11:14 AM PST     2.14 feet Low Tide
Tue -- 04:35 PM PST     6.04 feet High Tide
Tue -- 05:22 PM PST     Sunset
Tue -- 10:59 PM PST     1.32 feet Low Tide
Tue -- 11:58 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
23.34.86.177.26.75.84.53.42.52.22.43.14.25.25.965.64.73.52.41.61.3

Tide / Current Tables for Mulford Gardens Channel #2 SSW, South San Francisco Bay, California Current
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Mulford Gardens Channel #2 SSW
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Tue -- 01:21 AM PST     0.86 knots Max Flood
Tue -- 04:38 AM PST     -0.01 knots Slack
Tue -- 07:19 AM PST     Sunrise
Tue -- 07:32 AM PST     -0.61 knots Max Ebb
Tue -- 10:50 AM PST     0.00 knots Slack
Tue -- 11:07 AM PST     Moonrise
Tue -- 01:50 PM PST     0.60 knots Max Flood
Tue -- 04:43 PM PST     -0.00 knots Slack
Tue -- 05:22 PM PST     Sunset
Tue -- 07:47 PM PST     -0.58 knots Max Ebb
Tue -- 10:37 PM PST     0.00 knots Slack
Tue -- 11:58 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.80.80.60.3-0.1-0.4-0.6-0.6-0.4-0.200.30.50.60.50.2-0.1-0.3-0.5-0.6-0.4-0.10.1

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (2,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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weather_mapweather_map weather_map

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Disclaimer:
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 numerious 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.