Friday, May25, 2018 L-36.com


Marine Weather and Tides
San Rafael, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:50AMSunset 8:23PM Friday May 25, 2018 11:45 AM PDT (18:45 UTC) Moonrise 3:40PMMoonset 2:56AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 813 Am Pdt Fri May 25 2018
Today..SW winds 5 to 15 kt. A chance of showers.
Tonight..W winds 5 to 10 kt.
Sat..SW winds 5 to 15 kt with gusts up to 25 kt.
Sat night..SW winds 5 to 15 kt with gusts up to 25 kt.
Sun..SW winds 10 to 20 kt with gusts up to 30 kt.
Sun night..SW winds 10 to 20 kt with gusts up to 25 kt.
Memorial day..SW winds up to 10 kt.
Tue..SW winds up to 10 kt.
PZZ500 813 Am Pdt Fri May 25 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light winds will continue across the coastal waters this morning before northwesterly winds increase later today into tonight. Gusty northwest winds will persist through much of the weekend. Mixed swells are expected through the forecast period with a moderate northwest swell and a longer period southwest swell.

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 251742
afdmtr
area forecast discussion
national weather service san francisco bay area
1042 am pdt Fri may 25 2018

Synopsis Unseasonably cool today with scattered showers ending
overnight. Dry conditions return Saturday with temperatures
trending towards normal. A warming trend will begin Sunday
through Tuesday as high pressure builds into the state. A cooling
trend returns by midweek as another upper trough approaches the
coast.

Discussion As of 8:51 am pdt Friday... Radar scans show a few
showers still rotating through into santa cruz and santa clara
counties. Overnight rainfall totals of up to nearly two tenths of
an inch as showers associated with an upper level low moved across
central and northern california. The upper low is currently
located right about over the san francisco bay area, with most of
the shower activity occurring east and north of this low. Heavier
showers are currently occurring in the sacramento valley as well
as a few lightning strikes being noted in the northern sac valley.

This shower activity is expected to continue through the
overnight hours as the upper low slowly edges eastward. High temps
today are expected to be similar to yesterday's - cool, mainly in
the upper 50s to upper 60s.

After the low moves to the east, high pressure will gradually fill
in from the west. Look for a gradual warming trend beginning on
Saturday and extending through memorial day. High temperatures by
Monday are forecast to be 5 to 20 degrees warmer than today's,
with inland areas possibly topping out in the upper 80s to lower
90s! Near-coastal sites will remain more moderate with 60s to mid
70s expected.

By midweek another upper through is progged to approach the coast.

This will bring another cooling trend to the area and a deepening
of the marine layer and enhanced onshore flow.

Aviation As of 10:42 am pdt Friday... For 18z tafs. A few
scattered showers remain across the area and will taper off into
the afternoon. CIGS will continue to switch between MVFR andVFR
as the upper low moves inland. Cloud ceilings are ranging from
1800 to about 4000 ft. Lower CIGS should start to lift as the
afternoon approaches and showers become less frequent. Due to
ample low to mid level moisture, expect sct to bkn CIGS to
continue through most of the period between 3000 and 5000 ft.

Winds will remain light and become onshore for most sites this
afternoon at around 10 to 15 kt.

Moderate confidence on winds. Low confidence on cigs.

Vicinity of ksfo... CIGS currently around 2000 ft occasionally
lifting to 3000 ft. Borderline MVFRVFR conditions will continue
into the late afternoon. BriefVFR conditions are possible this
afternoon into this evening before MVFR CIGS redevelop and settle
in through tomorrow morning. SW winds around 10 kt currently and
will continue over the next few hours before winds turn onshore
this afternoon. Vcsh due to occasional weak showers through 03-05z
Saturday.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFRVFR CIGS will continue through the
morning with periodic weak showers moving through the area.

Possible to seeVFR conditions this afternoon before MVFR cigs
return this evening. Onshore winds this afternoon 10-15 kt.

Marine As of 08:13 am pdt Friday... Light winds will continue
across the coastal waters this morning before northwesterly winds
increase later today into tonight. Gusty northwest winds will
persist through much of the weekend. Mixed swells are expected
through the forecast period with a moderate northwest swell and a
longer period southwest swell.

Mtr watches warnings advisories
Tday None.

Public forecast: sims
aviation: as
marine: as
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 5 mi75 min S 5.1 G 8 57°F 59°F1019.2 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 6 mi76 min S 4.1 57°F 1020 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi81 min SW 8.9 G 11 57°F 1019.5 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi75 min SW 8 G 12 56°F 56°F1019.7 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi75 min SW 12 G 17 58°F 1018.7 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 13 mi75 min W 4.1 G 6 58°F 1018.3 hPa
PXSC1 13 mi75 min 59°F 51°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi75 min SSE 6 G 7
OBXC1 14 mi75 min 57°F 53°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi75 min SSE 6 G 8 58°F 1019.4 hPa
46237 - San Francisco Bar, CA (142) 16 mi75 min 53°F4 ft
LNDC1 16 mi75 min S 6 G 8 57°F 1019.4 hPa
AAMC1 - 9414750 - Alameda, CA 17 mi75 min S 4.1 G 8 57°F 61°F1019.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi75 min WSW 6 G 9.9 60°F 63°F1019 hPa52°F
PCOC1 - 9415144 - Port Chicago, CA 23 mi75 min SSW 6 G 11 60°F 64°F1018.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi65 min S 5.8 G 7.8 54°F 54°F1019.9 hPa54°F
PRYC1 - 9415020 - Point Reyes, CA 27 mi75 min SSE 2.9 G 6 54°F1018.8 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi120 min WSW 7 58°F 1019 hPa51°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 31 mi75 min SW 6 G 9.9 61°F 1018.9 hPa
RTYC1 - 9414523 - Redwood City, CA 35 mi75 min N 4.1 G 6 58°F 63°F1019.8 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 48 mi65 min S 5.8 G 7.8 54°F 1019.2 hPa53°F
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 48 mi115 min SSW 3.9 G 5.8 55°F 55°F5 ft1019.1 hPa (+1.2)

Wind History for Richmond, CA
(wind in knots)    EDIT      (on/off)   Help
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SW7
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SE10
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G13
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G18
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA12 mi50 minSSW 76.00 miOvercast with Haze57°F53°F88%1019 hPa
Napa, Napa County Airport, CA19 mi51 minS 1310.00 miOvercast59°F52°F78%1018.3 hPa
Petaluma Municipal Airport, CA20 mi70 minW 32.50 miFog/Mist55°F55°F100%1019 hPa
Concord, Buchanan Field, CA22 mi52 minS 11 G 1610.00 miMostly Cloudy64°F48°F58%1017.8 hPa
Oakland, Metro Oakland International Airport, CA23 mi52 minSSW 510.00 miMostly Cloudy60°F51°F72%1019.7 hPa

Wind History from DVO (wind in knots)
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Last 24hrSW12W7
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SW7SW6SW6SW74--W6SW6SW5
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SW4SW5S6S5S6SW64SW5
1 day agoSW9W9SW12W8
G14
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Calm--SW5--SW103W9
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NW565CalmW5SW8SW8SW9
2 days ago4E9SW11SW18
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CalmSW95W3SW3SW4W8SW8SW9
G14

Tide / Current Tables for Point San Quentin, San Francisco Bay, California
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Point San Quentin
Click for Map
Fri -- 03:56 AM PDT     Moonset
Fri -- 04:20 AM PDT     0.59 feet Low Tide
Fri -- 05:52 AM PDT     Sunrise
Fri -- 10:22 AM PDT     4.32 feet High Tide
Fri -- 03:59 PM PDT     0.90 feet Low Tide
Fri -- 04:40 PM PDT     Moonrise
Fri -- 08:21 PM PDT     Sunset
Fri -- 10:35 PM PDT     5.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.53.221.10.60.71.32.133.84.34.23.72.81.81.10.91.21.934.15.15.85.9

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 PDT     -0.00 knots Slack
Fri -- 03:15 AM PDT     -2.78 knots Max Ebb
Fri -- 03:55 AM PDT     Moonset
Fri -- 05:52 AM PDT     Sunrise
Fri -- 06:27 AM PDT     0.00 knots Slack
Fri -- 09:27 AM PDT     1.71 knots Max Flood
Fri -- 12:04 PM PDT     -0.00 knots Slack
Fri -- 03:03 PM PDT     -2.25 knots Max Ebb
Fri -- 04:39 PM PDT     Moonrise
Fri -- 06:01 PM PDT     0.00 knots Slack
Fri -- 08:21 PM PDT     Sunset
Fri -- 09:30 PM PDT     2.27 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-1.2-2.2-2.8-2.6-1.8-0.60.51.31.71.610.1-1.1-1.9-2.3-2-1.2-01.11.82.22.21.7

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 (14,3,4,5)
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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.