Friday, July19, 2019 L-36.com


Marine Weather and Tides
San Rafael, CA

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:00AMSunset 8:32PM Thursday July 18, 2019 9:34 PM PDT (04:34 UTC) Moonrise 9:00PMMoonset 6:35AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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- 750 Pm Pdt Thu Jul 18 2019
.small craft advisory in effect until 9 pm pdt this evening...
Tonight..SW winds 10 to 20 kt. Patchy drizzle after midnight.
Fri..SW winds 15 to 20 kt with gusts up to 25 kt.
Fri night..SW winds 10 to 15 kt.
Sat..SW winds 10 to 15 kt.
Sat night..SW winds 10 to 15 kt.
Sun..SW winds 10 to 15 kt.
Sun night..SW winds 5 to 10 kt.
Mon..W winds 10 to 15 kt.
Tue..W winds 10 to 15 kt.
PZZ500 750 Pm Pdt Thu Jul 18 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Split flow will develop overnight through Friday with light to locally moderate northwest winds in the northern outer waters and southerly winds along the coast. The sea state will continue to be dominated by steeper northwest wind waves mixed with a light long 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 190411
afdmtr
area forecast discussion
national weather service san francisco bay area
911 pm pdt Thu jul 18 2019

Synopsis An inland cooling trend will persist through late
week with periods of night and morning low clouds. Temperatures
will then warm slightly this weekend before rebounding back to
near seasonal normals by next week.

Discussion As of 09:11 pm pdt Thursday... Stratus quo. Forecast
remains on track for this evening with areas of coastal fog and
drizzle already developing. One of our meteorologists already
reported drizzle along the northern monterey county coast. This
trend will continue through the night and early Friday morning
hours. The marine layer this evening is rather deep in the
southern portions of our service area, with the fort ord profiler
showing a depth up to around 3000 feet while the bodega bay
profiler is only showing a depth of about 1300 feet. The upper
trough over the pac NW knocks the nosy ridge out north bay, we
should see the marine layer deepen up in the northern portions of
our service area too. Other than the marine layer, weather remains
quiet for now. Temps will start to warm again next week. How
much? We'll see how the ridge builds in.

Prev discussion As of 01:49 pm pdt Thursday... The modestly deep
marine layer in place mixed out well over inland areas this
afternoon with mostly sunny conditions and temperatures in the
upper 60s to middle 80s. Meanwhile, stratus coverage persists
around the marin county coastline, over western portions of san
francisco and locally into the monterey bay region. Low clouds
will redevelop along the coast before spreading back into the
inland valleys overnight with temperatures cooling into the 50s
for most locations. Patchy fog and coastal drizzle will also be
possible late tonight into Friday morning.

The inland cooling trend will continue into Friday as a surface low
pressure system currently over northern california shifts offshore.

This will result in southerly surface winds which will potentially
maintain low clouds along south and southwest facing locations
through a good portion of the day on Friday. Little change is
forecast heading into Saturday with temperatures generally below
seasonal averages.

Building high pressure over the desert southwest will result in a
slight warming trend to begin on Sunday, especially for inland
areas. However, conditions near the coast will remain cooler as
onshore flow persists. The ridge to the east will begin to build
westward early next week and allow for temperatures to rebound back
to near seasonal averages. However, a deepening trough off of the
west coast will prevent the ridge from strengthening too much over
our region next week.

Aviation As of 4:40 pm pdt Thursday... For 00z tafs. Fractured
stratus deck from point arena southward through southern
california this evening. Breezy onshore winds this afternoon and
beginning to see some fingers of stratus push inland through the
monterey bay and golden gate gap. Expect to see some early
arrivals of the marine layer over terminals over the new few
hours, starting with ksns by 01z. Forecast confidence on lower end
given significant difference between model output and potential
for some pockets of drier air overnight.

Vicinity of ksfo... Sw-w winds 10-15 kt with gusts to 20 kt this
evening, then weakening overnight. Marine layer attempting to push
through the san bruno gap which will warrant close watch.

Otherwise, expecting sct bkn clouds overnight, with bkn posbl
after 06z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Onshore winds up to around 12kt the rest
of the day. Finger of stratus bending towards ksns at this moment
and should soon overtake the airport between 00-01z, then
overtake kmry later this evening. Lifr-ifr CIGS overnight.

Marine As of 08:57 pm pdt Thursday... Split flow will develop
overnight through Friday with light to locally moderate northwest
winds in the northern outer waters and southerly winds along the
coast. The sea state will continue to be dominated by steeper
northwest wind waves mixed with a light long period southwest
swell.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Sf bay until 9 pm
public forecast: bfg rgass
aviation: drp
marine: drp
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RCMC1 - 9414863 - Richmond, CA 5 mi52 min S 5.1 G 8 59°F 62°F1011.9 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 6 mi149 min SE 8.9 58°F 1012 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 8 mi52 min SSW 14 G 19 59°F 1012 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 12 mi46 min SW 15 G 18 60°F 1010.9 hPa
FTPC1 - 9414290 - San Francisco, CA 12 mi52 min WSW 7 G 12 57°F 59°F1012.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 13 mi46 min W 5.1 G 13 58°F 1011.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi52 min WSW 8 G 8.9
OBXC1 14 mi46 min 59°F 59°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi46 min WSW 8 G 11 60°F 1012.5 hPa
46237 - San Francisco Bar, CA (142) 16 mi64 min 58°F4 ft
LNDC1 16 mi46 min WSW 8 G 11 60°F 1012.5 hPa
AAMC1 - 9414750 - Alameda, CA 17 mi52 min WSW 12 G 16 60°F 69°F1013.1 hPa
UPBC1 19 mi46 min WSW 13 G 16
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi52 min WSW 7 G 9.9 65°F 70°F1011.1 hPa
PCOC1 - 9415144 - Port Chicago, CA 23 mi46 min SW 11 G 14 65°F 71°F1010.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 25 mi24 min WSW 7.8 G 9.7 56°F 56°F1013.1 hPa
PRYC1 - 9415020 - Point Reyes, CA 27 mi46 min 56°F1012.3 hPa
SFXC1 - San Francisco Bay Reserve, CA 28 mi109 min W 8.9 69°F 1010 hPa59°F
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 31 mi52 min W 7 G 12 69°F 1010.2 hPa
RTYC1 - 9414523 - Redwood City, CA 35 mi46 min WNW 9.9 G 13 63°F 74°F1012.7 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 48 mi34 min WNW 7.8 G 9.7 52°F1011.6 hPa (-0.7)

Wind History for Richmond, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA12 mi59 minESE 710.00 miFair64°F57°F78%1011.2 hPa
Napa, Napa County Airport, CA19 mi40 minS 1110.00 miFair60°F57°F90%1010.3 hPa
Petaluma Municipal Airport, CA20 mi59 minNW 58.00 miFair59°F59°F100%1011.8 hPa
Concord, Buchanan Field, CA22 mi41 minS 1310.00 miFair67°F55°F66%1009.7 hPa
Oakland, Metro Oakland International Airport, CA23 mi41 minN 010.00 miOvercast63°F57°F81%1012.6 hPa

Wind History from DVO (wind in knots)
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Last 24hrN6NW5NW6CalmCalmCalmCalmCalmCalmCalmN6Calm4CalmE8E7E6SW12SW10
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1 day agoE4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm344NW9
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2 days ago4CalmCalmNE5NE4CalmNW4CalmCalmN4CalmCalm44SE9SW12
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Tide / Current Tables for Point San Quentin, San Francisco Bay, California
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Point San Quentin
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Fri -- 01:46 AM PDT     5.76 feet High Tide
Fri -- 06:02 AM PDT     Sunrise
Fri -- 08:32 AM PDT     Moonset
Fri -- 08:42 AM PDT     -0.34 feet Low Tide
Fri -- 03:49 PM PDT     4.81 feet High Tide
Fri -- 08:29 PM PDT     Sunset
Fri -- 08:49 PM PDT     2.72 feet Low Tide
Fri -- 10:32 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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55.65.75.44.43.11.70.5-0.2-0.30.10.923.144.64.84.53.93.32.82.733.6

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 -- 12:41 AM PDT     1.74 knots Max Flood
Fri -- 03:36 AM PDT     -0.00 knots Slack
Fri -- 06:02 AM PDT     Sunrise
Fri -- 07:07 AM PDT     -2.98 knots Max Ebb
Fri -- 08:32 AM PDT     Moonset
Fri -- 11:13 AM PDT     0.00 knots Slack
Fri -- 02:33 PM PDT     1.85 knots Max Flood
Fri -- 05:56 PM PDT     -0.00 knots Slack
Fri -- 08:12 PM PDT     -1.28 knots Max Ebb
Fri -- 08:29 PM PDT     Sunset
Fri -- 10:32 PM PDT     Moonrise
Fri -- 10:44 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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1.61.71.30.6-0.5-1.8-2.7-3-2.8-2.4-1.5-0.30.81.51.81.81.50.8-0.1-0.9-1.3-1.2-0.60.2

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 (0,6,7,8)
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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.