Thursday, November15, 2018 L-36.com


Marine Weather and Tides
San Mateo, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:48AMSunset 4:59PM Thursday November 15, 2018 3:24 AM PST (11:24 UTC) Moonrise 1:15PMMoonset 12:00AM Illumination 49% 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 214 Am Pst Thu Nov 15 2018
Today..NE winds up to 10 kt. Hazy and patchy smoke.
Tonight..N winds up to 10 kt. Hazy and patchy smoke.
Fri..NE winds up to 10 kt. Hazy and patchy smoke.
Fri night..W winds 5 to 10 kt.
Sat..SW winds up to 10 kt.
Sat night..W winds 5 to 10 kt.
Sun..NE winds around 5 kt.
Mon..NE winds around 5 kt.
PZZ500 214 Am Pst Thu Nov 15 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... North to northwest winds will prevail over the coastal waters through the end of the week and into the coming weekend. Expect locally breezy winds near coastal gaps and favored coastal jet locations during the afternoon and evening hours. In incoming northwest swell of 5 to 9 ft will arrive to the waters over the next 12 to 24 hours.


7 Day Forecast for Marine Location Near San Mateo, CA
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location: 37.59, -122.31     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 151054
afdmtr
area forecast discussion
national weather service san francisco bay area
254 am pst Thu nov 15 2018

Synopsis Smoke and haze will continue to produce poor air
quality over much of the san francisco bay through late week. Dry
and mild conditions are also likely to persist through early next
week with the potential for some improvement in smoky conditions
by the weekend as weak onshore flow returns. A more significant
pattern change appears likely during the latter half of next week
with the potential for widespread rainfall.

Discussion As of 02:49 am pst Thursday... Smoke from the camp
fire continues to adversely impact the region this morning,
especially around the greater san francisco bay area where
visibility has dropped below 2sm at times. These conditions are
resulting in poor air quality with no significant improvement
forecast through late week as weak offshore low persist.

Conditions are better this morning over portions of the north bay
and around the monterey bay region however. The latest hrrr smoke
model also supports ongoing smoky conditions region-wide through
at least the next 36 hours or so.

Day-to-day changes will be minor through the upcoming weekend with
daytime temperatures warming into the 60s and 70s with overnight
lows in the middle 30s across the colder inland locations to middle
40s near the coast bays. Very dry conditions are also likely to
persist, even near the coast through late week. As mentioned, weak
offshore flow will continue to advect smoke over the region until
the large scale pattern aloft changes. Slight improvement in surface
moisture and onshore flow looks possible by the upcoming weekend as
a weak mid upper level low develops offshore and begins to approach
southern california. However, not expecting smoky and hazy
conditions to completely scour out until sometime next week.

The much needed pattern change continues to look likely at some
point next week based off of the latest forecast models. The
aforementioned mid upper level low is forecast to first push
inland over southern california while dry conditions persist
across our region early in the week. The gfs, ECMWF and canadian
models are in decent agreement with the development of a deepening
upper level trough approaching the west coast late next week. It
is latter in the week that the ECMWF and canadian models bring a
short-wave trough into the pacific northwest with precipitation as
far south as our region late Wednesday into thanksgiving day.

However, the GFS keeps a short-wave ridge across our region with
dry conditions over the entire west coast through midweek. The
models come into better agreement by Friday with cooler, wetter
conditions spreading across much of the region. With all this
said, forecast confidence remains low at this time in the details
with respect to timing of precipitation and amounts. However,
confidence is higher with respect to an overall pattern change
that would potentially bring rainfall to the region late next
week.

Aviation As of 09:27 pm pst Wednesday... For 06z tafs. Smoke
continues to be an issue with reduced visibilities still being
reported across area terminals. Mainly MVFR vis with isolated
instances of ifr. Latest smoke model forecast does not indicate
that this will change overnight. Expect reduced vis at the surface
as well as slant range vis issues to persist due to smoke. Winds
will remain generally light through the period.

Vicinity of ksfo... MVFR vis due to smoke with generally light
winds. Slant range vis issues expected to persist. Latest hrrr
smoke forecast does not suggest much change in smoke conditions
through at least tonight.

Sfo bridge approach... Similar to terminal.

Monterey bay terminals...VFR prevailing with periods of reduced
vis to MVFR due to smoke.

Marine As of 02:49 am pst Thursday... North to northwest winds
will prevail over the coastal waters through the end of the week
and into the coming weekend. Expect locally breezy winds near
coastal gaps and favored coastal jet locations during the
afternoon and evening hours. In incoming northwest swell of 5 to 9
ft will arrive to the waters over the next 12 to 24 hours.

Mtr watches warnings advisories
Tday None.

Public forecast: rgass
aviation: as
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 8 mi36 min SW 1 G 1.9 46°F 59°F1022.8 hPa
AAMC1 - 9414750 - Alameda, CA 13 mi42 min NE 1 G 1.9 52°F 58°F1022.7 hPa
LNDC1 14 mi36 min NNE 2.9 G 4.1 50°F 1022.3 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 15 mi36 min ENE 4.1 G 5.1 51°F 1022.4 hPa
PXSC1 15 mi42 min 55°F 44°F
OBXC1 15 mi36 min 53°F 43°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 15 mi36 min N 5.1 G 5.1 54°F 1021.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 15 mi36 min NNE 4.1 G 5.1
FTPC1 - 9414290 - San Francisco, CA 17 mi36 min NNE 7 G 8 57°F1022.5 hPa
46237 - San Francisco Bar, CA (142) 22 mi54 min 55°F5 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 22 mi42 min N 8 G 8.9 51°F 1022.8 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 22 mi37 min W 1.9 51°F 1022 hPa
RCMC1 - 9414863 - Richmond, CA 24 mi36 min Calm G 1 57°F1022.1 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi24 min N 3.9 G 3.9 54°F 56°F1022.2 hPa (-1.3)
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi36 min ENE 1.9 G 4.1 46°F 57°F1022.9 hPa37°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 32 mi42 min Calm G 1 49°F 1022.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 35 mi36 min ENE 2.9 G 4.1 48°F 58°F1022.9 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 38 mi36 min SW 2.9 G 2.9 45°F 1022.7 hPa
PRYC1 - 9415020 - Point Reyes, CA 45 mi36 min Calm G 1 55°F1021.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 45 mi99 min E 4.1 38°F 1023 hPa29°F

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA3 mi28 minSSW 44.00 miMostly Cloudy with Haze46°F32°F58%1021.9 hPa
San Carlos Airport, CA5 mi29 minN 04.00 miOvercast with Haze45°F28°F53%1022.3 hPa
Oakland, Metro Oakland International Airport, CA9 mi31 minNNE 52.00 miOvercast with Haze42°F28°F60%1022.3 hPa
Hayward, Hayward Air Terminal, CA11 mi30 minENE 52.50 miHaze Smoke47°F21°F36%1023.2 hPa
Half Moon Bay Airport, CA11 mi29 minN 04.00 miOvercast with Haze37°F26°F65%1022 hPa
Mountain View, Moffett Field, CA18 mi28 minN 03.00 miSmoke43°F32°F65%1023 hPa

Wind History from SFO (wind in knots)
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Last 24hrCalmCalmS3S3E3S3CalmE4NE4N5N4CalmCalmNW6W8W4S4CalmS3CalmS4CalmSW4SW4
1 day agoSW3CalmSW3CalmCalmS3CalmCalmCalmCalmN3NE3CalmCalmCalmS3S3CalmCalmSE5CalmCalmSW6W4
2 days agoCalmSW4CalmSE3SE6S6E3E4CalmCalmNE3CalmCalmE3S3S3CalmCalmCalmCalmCalmCalmSW3Calm

Tide / Current Tables for Coyote Point Marina, San Francisco Bay, California
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Coyote Point Marina
Click for Map
Thu -- 06:39 AM PST     6.12 feet High Tide
Thu -- 06:49 AM PST     Sunrise
Thu -- 06:54 AM PST     First Quarter
Thu -- 12:16 PM PST     3.09 feet Low Tide
Thu -- 01:14 PM PST     Moonrise
Thu -- 04:58 PM PST     Sunset
Thu -- 05:31 PM PST     5.67 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.81.42.33.44.55.466.15.754.23.53.13.23.84.55.25.65.65.14.23.12.11.4

Tide / Current Tables for San Mateo Bridge, South San Francisco Bay, California Current
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San Mateo Bridge
Click for Map
Thu -- 01:02 AM PST     0.00 knots Slack
Thu -- 04:03 AM PST     1.33 knots Max Flood
Thu -- 06:48 AM PST     Sunrise
Thu -- 06:54 AM PST     First Quarter
Thu -- 07:42 AM PST     -0.00 knots Slack
Thu -- 10:17 AM PST     -0.72 knots Max Ebb
Thu -- 01:14 PM PST     Moonrise
Thu -- 01:46 PM PST     0.00 knots Slack
Thu -- 03:57 PM PST     0.69 knots Max Flood
Thu -- 04:57 PM PST     Sunset
Thu -- 06:56 PM PST     -0.00 knots Slack
Thu -- 10:20 PM PST     -1.20 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-00.71.21.31.310.5-0.1-0.5-0.7-0.7-0.5-0.30.10.50.70.60.4-0-0.5-0.9-1.2-1.1

Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (6,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.