Friday, November16, 2018 L-36.com


Marine Weather and Tides
San Rafael, 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 6:51AMSunset 4:58PM Friday November 16, 2018 2:23 PM PST (22:23 UTC) Moonrise 1:49PMMoonset 12:03AM Illumination 64% Phase: Waxing Gibbous; Moon at 9 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- 854 Am Pst Fri Nov 16 2018
Today..NE winds up to 10 kt...becoming around 5 kt this afternoon. Hazy and patchy smoke.
Tonight..NW winds up to 10 kt. Hazy and patchy smoke.
Sat..SW winds up to 10 kt. Hazy and patchy smoke.
Sat night..W winds 5 to 15 kt. Hazy and patchy smoke.
Sun..NE winds 5 to 10 kt. Hazy and patchy smoke.
Sun night..E winds 5 to 10 kt.
Mon..E winds around 5 kt.
Tue..SE winds around 5 kt.
PZZ500 854 Am Pst Fri Nov 16 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds will continue through the weekend and early next week. A mixed moderate northwest swell and light southerly swell will also persist. No significant change in the weather pattern expected until mid week next week at the earliest.


7 Day Forecast for Marine Location Near San Rafael, CA
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location: 37.98, -122.47     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 162200
afdmtr
area forecast discussion
national weather service san francisco bay area
200 pm pst Fri nov 16 2018

Synopsis Widespread smoke and haze will continue to result in
poor air quality over much of the san francisco bay area through
the weekend. Otherwise, dry weather with mild temperatures are
forecast to persist through early next week. A significant pattern
change appears likely starting on Wednesday of next week, with
the potential for widespread periodic rainfall during the second
half of the week.

Discussion As of 02:00 pm pst Friday... Smoke and poor air
quality has continued to impact the region today, with the bay
area seeing the worst of the impacts. Visibilities are reduced due
to smoke with the livermore airport reporting the lowest
visibility at 3 4 a mile. Not expecting much change in smoke
coverage across the bay area as offshore flow continues to bring
smoke from the central valley through the bay area and the north
bay counties. Coastal areas may see some minor improvements in
air quality with an increase in onshore flow at times this
weekend. However, there is abundant smoke over the coastal waters
so not expecting onshore flow to improve conditions appreciably.

Smoke and poor air quality will continue to be an issue through
early next week.

Highs through the beginning of next week will be in the 60s to
lower 70s. This is a couple of degrees cooler than recent days, as
the ridge of high pressure overhead will weaken due to upper
level low approaching the ridge. Overnight lows will continue to
be cool in the valleys, with 30s to 40s expected. A surface low
just offshore will drive weak onshore flow and could see stratus
push into the bay area and along the coast tonight and again on
Saturday night. Will see an increase in offshore flow in the
higher terrain on Saturday night and into Sunday. Winds could be
breezy at times in the north and east bay hills with low relative
humidity, so fire weather concerns will continue through the
weekend.

Looking ahead to next week, models are in better agreement that
the first disturbance in a major pattern change will arrive on
Wednesday. There are significant differences between the GFS and
the euro on the amplitude of the shortwave trough, with the euro
much deeper and wetter. However, both the euro and GFS ensembles
are in good agreement of at least some precipitation over the
region. Have increased pops into the likely category during the
day on Wednesday. This pattern change will bring a return of
cleaner marine air, stronger winds, and precipitation which will
help to remove smoke from the area. The next trough is expected
to bring additional rainfall late on thanksgiving and into Friday,
with another trough possible over the weekend. These systems will
bring cooler temperatures, with rainfall amounts still highly
uncertain. While the timing and rainfall amounts of these troughs
is uncertain, confidence continues to increase that a major shift
towards a wet pattern will develop for our region.

Aviation As of 10:10 am pst Friday... Widespread impacts from
wildfire smoke, primarily throughout the sf bay area and delta.

Ifr visibility with periods of MVFR ceilings through the day. Weak
onshore push this afternoon may bring slight temporary
improvements later today, however, some areas such as koak could
see further deterioration in visibility as there is plenty of
smoke offshore to pull back inland. Poor slant range visbys
continue. Little relief from smoke through the weekend.

Vicinity of ksfo... MVFR-ifr visibility in smoke, light wind. Poor
to very poor slant range visibility.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR with periods of smoke through the
morning. Onshore wind shift later today will pull offshore smoke
inland, similar to yesterday afternoon, bringing generally MVFR
but possibly ifr visibilities late this afternoon through this
evening.

Marine As of 10:00 am pst Friday... Generally light winds will
continue through the weekend and early next week. A mixed moderate
northwest swell and light southerly swell will also persist. No
significant change in the weather pattern expected until mid week
next week at the earliest.

Mtr watches warnings advisories
Tngt None.

Public forecast: st
aviation: drp
marine: drp
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 5 mi36 min 57°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 6 mi43 min WNW 9.9 60°F 1015 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi36 min W 1.9 G 1.9 66°F 1015 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi42 min NNE 4.1 G 4.1 60°F 56°F1015.2 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi36 min E 12 G 14 61°F 1014.6 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 13 mi36 min W 1.9 G 5.1 62°F 1013.9 hPa
PXSC1 13 mi42 min 63°F 37°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi36 min NW 6 G 7 58°F 1014.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi42 min NNW 5.1 G 6
OBXC1 14 mi36 min 59°F 42°F
LNDC1 16 mi36 min NW 4.1 G 6 61°F 1014.8 hPa
46237 - San Francisco Bar, CA (142) 16 mi54 min 55°F6 ft
AAMC1 - 9414750 - Alameda, CA 17 mi42 min SW 1.9 G 2.9 58°F 58°F1015.2 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi36 min NNE 1 G 1.9 58°F 58°F1015.3 hPa37°F
PCOC1 - 9415144 - Port Chicago, CA 23 mi36 min ENE 7 G 8 58°F 57°F1015.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi24 min NW 7.8 G 12 56°F 57°F1015.3 hPa (-2.0)
PRYC1 - 9415020 - Point Reyes, CA 27 mi36 min NNE 1 G 1.9 55°F1014.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi99 min W 1.9 58°F 1016 hPa31°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 31 mi36 min S 4.1 G 4.1 61°F 1015.2 hPa
RTYC1 - 9414523 - Redwood City, CA 35 mi36 min N 6 G 7 62°F 58°F1015.1 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 48 mi34 min NW 7.8 G 9.7 56°F6 ft1015.4 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA12 mi29 minSE 41.50 miFair with Haze64°F32°F30%1014.9 hPa
Napa, Napa County Airport, CA19 mi30 minESE 61.50 miHaze Smoke65°F30°F27%1014.1 hPa
Petaluma Municipal Airport, CA20 mi29 minN 01.50 miFair with Haze64°F32°F30%1015.2 hPa
Concord, Buchanan Field, CA22 mi31 minNNE 31.00 miOvercast with Haze68°F21°F17%1013.8 hPa
Oakland, Metro Oakland International Airport, CA23 mi31 minW 42.00 miOvercast with Haze60°F39°F46%1015.1 hPa

Wind History from DVO (wind in knots)
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Last 24hrS6SE5SE4SE4CalmCalmS4CalmCalmN3CalmCalmS3CalmS3S7CalmCalmCalmCalmCalm4SE4SE5
1 day agoSE6SE4E4S4CalmS3S3CalmCalmCalmS3CalmCalmCalmCalmCalmCalmCalmCalmCalmS44SE5S6
2 days agoCalm4S5S5S5SW5S3S4CalmN4CalmCalmCalmCalmCalmS7N6CalmCalmCalmN5CalmSE4SE4

Tide / Current Tables for Point San Pedro, San Pablo Bay, California
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Point San Pedro
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Fri -- 12:03 AM PST     Moonset
Fri -- 12:34 AM PST     0.75 feet Low Tide
Fri -- 06:51 AM PST     Sunrise
Fri -- 08:02 AM PST     5.01 feet High Tide
Fri -- 01:48 PM PST     Moonrise
Fri -- 01:54 PM PST     2.45 feet Low Tide
Fri -- 04:57 PM PST     Sunset
Fri -- 07:03 PM PST     4.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.81.11.82.63.54.34.854.84.33.732.62.52.63.13.74.14.34.23.62.92

Tide / Current Tables for Point San Pablo Midchannel, San Pablo Bay, California Current
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Point San Pablo Midchannel
Click for Map
Fri -- 12:03 AM PST     Moonset
Fri -- 02:48 AM PST     0.00 knots Slack
Fri -- 06:28 AM PST     1.98 knots Max Flood
Fri -- 06:51 AM PST     Sunrise
Fri -- 09:42 AM PST     -0.00 knots Slack
Fri -- 12:27 PM PST     -1.76 knots Max Ebb
Fri -- 01:48 PM PST     Moonrise
Fri -- 03:21 PM PST     0.00 knots Slack
Fri -- 04:57 PM PST     Sunset
Fri -- 05:55 PM PST     1.18 knots Max Flood
Fri -- 08:38 PM PST     -0.00 knots Slack
Fri -- 11:52 PM PST     -2.28 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.2-1.7-0.90.21.11.71.91.91.50.7-0.3-1.2-1.7-1.7-1.2-0.30.511.210.5-0.4-1.4-2.1

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 (17,4,5,8)
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Ground Weather Radar Station Sacramento, 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.