Thursday, March21, 2019 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 7:10AMSunset 7:24PM Thursday March 21, 2019 5:26 AM PDT (12:26 UTC) Moonrise 7:26PMMoonset 6:56AM 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 219 Am Pdt Thu Mar 21 2019
Today..NW winds around 5 kt...becoming sw 5 to 15 kt this afternoon.
Tonight..SW winds 5 to 10 kt.
Fri..SE winds 10 to 20 kt with gusts up to 30 kt. Rain.
Fri night..W winds 5 to 10 kt. A chance of rain.
Sat..W winds 5 to 15 kt.
Sat night..NW winds 5 to 10 kt.
Sun..SE winds 5 to 15 kt. A chance of rain.
Mon..S winds 5 to 10 kt. Rain likely.
PZZ500 219 Am Pdt Thu Mar 21 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Rain shower chances will continue through the early morning hours, mainly from pigeon point and locations south. Weak high pressure will build off the southern california coast through the day bringing light west to northwest winds. Winds will turn southerly and increase on Friday as a frontal system moves in. A moderate- period west swell will continue through Thursday before a longer period west to northwest swell arrives on Friday.


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 211138
afdmtr
area forecast discussion
national weather service san francisco bay area
438 am pdt Thu mar 21 2019

Synopsis Isolated showers will be possible across the region
through early afternoon, especially along coastal areas of the
central coast. Dry conditions develop tonight ahead of the next
frontal system that will bring widespread rainfall to the region
Friday into Friday night. Mainly dry conditions return for a
majority of the weekend with unsettled weather likely throughout
at least the first half of next week.

Discussion As of 03:46 am pdt Thursday... A weak short-wave
disturbance approaching the coast this morning has resulted rain
showers off of the big sur coast which are beginning to push
inland. Elsewhere, mainly dry weather conditions prevail with
temperatures ranging from the upper 30s in the north bay valleys
to middle upper 40s elsewhere (near 50 around san francisco). As
the weak system pushes inland through the day, cannot rule out
isolated showers from the big sur coast up to the santa cruz
mountains. The short-range models do indicate the potential for
isolated showers as far north as the greater san francisco bay
area as well. However, widespread rainfall is unlikely with any
lingering showers likely to diminish through the evening. Daytime
temperatures are forecast to warm into the upper 50s near the
coast to middle 60s inland.

Dry weather conditions are then forecast tonight into early Friday
morning ahead of an approaching frontal boundary. This next system
will move from northwest to southeast across the region on Friday
with light to occasionally moderate rainfall. Most indications are
the santa cruz mountains northward through the north bay will see the
most with amounts from 0.50" to 0.75" in most urban areas (lesser
amounts in the east bay valleys and south bay). Meanwhile, 1.00" to
1.50" will be possible in the coastal ranges and north bay hills.

Rainfall amounts will tapper off across the central coast with most
locations picking up less than 0.25". Locally breezy conditions are
also expected ahead of and in wake of the frontal passage with gusts
to around 35 to 40 mph. Post frontal showers may linger into Friday
night before diminishing region-wide on Saturday. Saturday and
Sunday appear to be mainly dry in between weather systems with
daytime temperatures generally in the 60s on Saturday to potentially
upper 60s (inland) by Sunday.

Weather conditions next week continue to look unsettled with another
round of precipitation returning as early as Sunday night. However,
the forecast models don't agree on the specifics to timing, amounts
and location of heaviest precipitation at this time. With this said,
the ensembles point toward the potential for more widespread
rainfall through at least the first half of next week. The forecast
will be worth monitoring in the coming days.

Aviation As of 4:38 am pdt Thursday... For 12z tafs. Infrared
satellite imagery shows an upper level low spinning southeastward
toward the central coast this morning. There have been some echos
on radar overnight, but there returns have trended downward in
coverage over the past several hours. With the isolated showers
mainly confined from mry and points south,VFR conditions are
generally expected to prevail at the TAF sites through the day.

The exception to this would be sts and perhaps lvk where some
patching morning fog may bring reduced visibilities. Light winds
this morning are forecast to become onshore this afternoon. By the
end of the TAF period, the next storm system will be approaching
the region with winds expected to become southerly once again in
the 24-36 hour timeframe.

Vicinity of ksfo...VFR conditions are forecast to prevail through
the day. Winds will remain relatively light in the morning and
will become onshore around 10-15 kt this afternoon. High clouds
will increase through the period with winds becoming southerly by
the end of the 30 hour TAF as the next system approaches.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Isolated showers have been detected
within the vicinity of mry this morning as an upper level low
tracks southeasterly along toward the central coast. Other than
a stray shower or two over the next few hours, offshore winds
this morning will become onshore this afternoon for both mry and
sns.

Marine As of 03:46 am pdt Thursday... Rain shower chances will
continue through the early morning hours, mainly from pigeon point
and locations south. Weak high pressure will build off the
southern california coast through the day bringing light west to
northwest winds. Winds will turn southerly and increase on Friday
as a frontal system moves in. A moderate- period west swell will
continue through Thursday before a longer period west to northwest
swell arrives on Friday.

Mtr watches warnings advisories
Tday None.

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

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 5 mi38 min 56°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 6 mi117 min Calm 49°F 1019 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi38 min N 5.1 G 6 50°F 1019 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi38 min NNE 1 G 2.9 48°F 1018.6 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi44 min Calm G 2.9 49°F 55°F1018.9 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 13 mi38 min NNW 7 G 8 51°F 1017.7 hPa
PXSC1 13 mi44 min 52°F 51°F
OBXC1 14 mi44 min 52°F 50°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi38 min N 7 G 8 1018.7 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi44 min N 5.1 G 6
46237 - San Francisco Bar, CA (142) 16 mi56 min 55°F8 ft
LNDC1 16 mi38 min N 1 G 2.9 1018.6 hPa
AAMC1 - 9414750 - Alameda, CA 17 mi44 min E 1 G 1.9 50°F 58°F1019 hPa
UPBC1 19 mi38 min W 6 G 7
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi44 min WSW 1.9 G 4.1 49°F 56°F1018.6 hPa49°F
PCOC1 - 9415144 - Port Chicago, CA 23 mi38 min S 5.1 G 7 56°F1018.6 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi36 min NE 5.8 G 9.7 53°F 55°F8 ft1018.9 hPa
PRYC1 - 9415020 - Point Reyes, CA 27 mi38 min 55°F1018.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi101 min NW 1 43°F 1018 hPa41°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 31 mi38 min W 5.1 G 8 51°F 1018.2 hPa
RTYC1 - 9414523 - Redwood City, CA 35 mi38 min S 1 G 1.9 61°F1019 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 48 mi36 min ENE 5.8 G 9.7 54°F10 ft1018.8 hPa

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA12 mi51 minVar 510.00 miPartly Cloudy43°F42°F100%1019 hPa
Napa, Napa County Airport, CA19 mi32 minNNW 510.00 miFair43°F41°F93%1017.8 hPa
Petaluma Municipal Airport, CA20 mi51 minVar 40.25 miFog43°F42°F100%1019 hPa
Concord, Buchanan Field, CA22 mi33 minS 410.00 miFair46°F41°F83%1017.3 hPa
Oakland, Metro Oakland International Airport, CA23 mi33 minN 010.00 miOvercast48°F45°F89%1018.6 hPa

Wind History from DVO (wind in knots)
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S6SW8SW7SW11SW14SW10SW12W9SW9SW7--W4CalmSW3CalmSW3CalmCalmNE3CalmCalm
1 day agoN6CalmS3CalmCalmE4Calm434SE5S4W12SW9SW3
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CalmSW10E3CalmSE5SE12SE10
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2 days agoCalmCalmCalmS5S7S6S94SE7E7SE7CalmS54N8N6N10N10N8NW5S4N4CalmS6

Tide / Current Tables for Point San Quentin, San Francisco Bay, California
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Point San Quentin
Click for Map
Thu -- 01:21 AM PDT     5.86 feet High Tide
Thu -- 07:08 AM PDT     0.54 feet Low Tide
Thu -- 07:12 AM PDT     Sunrise
Thu -- 07:55 AM PDT     Moonset
Thu -- 01:19 PM PDT     6.05 feet High Tide
Thu -- 07:22 PM PDT     Sunset
Thu -- 07:28 PM PDT     -0.06 feet Low Tide
Thu -- 08:26 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.15.85.74.93.52.110.50.81.734.35.465.953.620.7000.81.93.3

Tide / Current Tables for Point San Pablo Midchannel, San Pablo Bay, California Current
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Point San Pablo Midchannel
Click for Map
Thu -- 12:00 AM PDT     2.11 knots Max Flood
Thu -- 03:17 AM PDT     -0.01 knots Slack
Thu -- 06:16 AM PDT     -2.34 knots Max Ebb
Thu -- 07:11 AM PDT     Sunrise
Thu -- 07:55 AM PDT     Moonset
Thu -- 09:15 AM PDT     0.01 knots Slack
Thu -- 12:09 PM PDT     2.23 knots Max Flood
Thu -- 03:14 PM PDT     -0.00 knots Slack
Thu -- 06:15 PM PDT     -2.87 knots Max Ebb
Thu -- 07:22 PM PDT     Sunset
Thu -- 08:25 PM PDT     Moonrise
Thu -- 09:39 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.91.30.3-0.9-1.9-2.3-2.2-1.6-0.40.91.92.221.40.3-1.2-2.3-2.8-2.7-2.1-0.90.51.5

Weather Map and Satellite Images
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wmap_P
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 (8,2,3,4)
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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.