Monday, October14, 2019 L-36.com


Marine Weather and Tides
Roseland, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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 7:17AMSunset 6:36PM Monday October 14, 2019 7:17 PM PDT (02:17 UTC) Moonrise 6:27PMMoonset 6:56AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 242 Pm Pdt Mon Oct 14 2019
Tonight..NW winds up to 10 kt. Wind waves 1 ft. NW swell 4 to 6 ft at 11 seconds and sw around 2 ft at 16 seconds. Patchy fog.
Tue..NW winds around 5 kt. Wind waves 1 ft. NW swell 3 to 5 ft at 11 seconds and sw around 2 ft at 17 seconds. Patchy fog.
Tue night..NW winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 3 to 4 ft at 10 seconds and sw around 2 ft at 17 seconds.
Wed..W winds 5 to 10 kt. Wind waves 1 ft. NW swell 3 to 5 ft at 11 seconds and sw around 2 ft at 17 seconds.
Wed night..W winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 7 to 9 ft at 15 seconds and sw 2 to 3 ft at 16 seconds. A slight chance of rain.
Thu..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 10 to 12 ft at 16 seconds and sw 2 to 3 ft at 15 seconds.
Thu night..NW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 12 to 14 ft at 16 seconds and sw 2 to 3 ft at 16 seconds.
Fri..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 10 to 12 ft and sw 2 to 3 ft.
Sat..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 9 to 11 ft and S 2 to 3 ft.
PZZ500 242 Pm Pdt Mon Oct 14 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light northwest winds will prevail over the coastal waters through Tuesday. Mixed seas will continue over the next few days with a light shorter period northwest swell and a light southerly swell. A larger moderate period northwest swell is forecast to arrive later this week with forerunners expected in the next couple days.


7 Day Forecast for Marine Location Near Roseland, CA
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location: 38.43, -122.71     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 150019
afdmtr
area forecast discussion
national weather service san francisco bay area
519 pm pdt Mon oct 14 2019

Synopsis Slight warming is expected Tuesday ahead of a weak
frontal system that will move through the region late on Wednesday.

This may produce light rain over the northern portions of the
north bay late Wednesday and Wednesday night. Post-frontal breezy
conditions and cooler temperatures are expected from late
Wednesday through Thursday and may persist into the upcoming
weekend.

Discussion As of 01:53 pm pdt Monday... Satellite imagery shows
low clouds just offshore with mostly clear skies over land.

Temperatures across the region are in the 60s and 70s a few
degrees cooler than yesterday. Some additional warming can be
expected the rest of the afternoon with highs in the mid 60s to
low 70s at the coast to 70s and low 80s inland. Synoptically, the
upper trough that has been over much of the west coast has begun
to shift eastward while a weak short-wave ridge starts to move in
to take its place. Behind this ridging is an upper low in the gulf
of alaska with a cold front approaching california and the
pacific northwest.

These features will drive our weather pattern for much of this
week. The weak short wave ridge will move over california by
tomorrow allowing for a slight increase in temperatures across
the region. Coastal areas will remain in the upper 60s to low 70s
with 70s to low 80s across the interior. Isolated inland locations
will reach the mid 80s. This ridging will be quickly overcome by
an upper low approaching western canada with a trough extending
southward along the west coast of the u.S. This will allow
temperatures to cool some on Wednesday ahead of the system.

A weak cold front will then move into northern california late
Wednesday and Wednesday night bringing a slight chance of rain to
the north bay. Not more than a few hundredths is expected out of
this system with measurable rainfall south of sonoma county still
unlikely. The upper trough and surface cold front will also act
to cool temperatures further across the region with afternoon
highs across the interior in the 70s by Thursday. Locally gusty
northwesterly winds are expected behind the front into Thursday,
mainly along the coast. These winds will accompany higher relative
humidity values lessening fire concerns. Breezy afternoon
conditions may continue through late this week and into the coming
weekend with temperatures just below seasonal averages.

Looking into this weekend, models show a shortwave trough moving
in to our north on Saturday. Both the 12z GFS and the ECMWF show
some showers over the far northern portions of the region, but
differ on timing. Regardless, the best shower chances will be
outside of our area. As the trough continues to shift inland into
the great basin over the weekend, models do show northerly winds
developing by Sunday and Monday as an upper ridge builds over the
eastern pacific. These winds do not look to be strong enough to raise
significant fire weather concerns at this point. This set up will
also bring some warming and drying to the region into early next
week.

Aviation As of 5:00 pm pdt Monday... Satellite imagery shows
more stratus over the coastal waters than yesterday. An upper
level ridge is moving over the area and there is an indication
that a marine layer is developing at around 1000 feet. This could
bring stratus into the mry bay area early tonight. Stratus should
spread into the east bay tonight and will have to monitor for the
stratus spreading into sfo late tonight. For now will keep cigs
out of sfo since the marine layer will be shallow. Fog likely once
again in the north bay valleys and ksts.

Vicinity of ksfo...VFR conditions are forecast to maintain.

Confidence is not high as more stratus is expected into the east
bay and could possibly spread into sfo. For now have keptVFR
conditions since the marine layer is expected to be too shallow.

Sfo bridge approach... Same as ksfo.

Monterey bay terminals... Satellite image shows stratocumulus
clouds approaching the monterey peninsula. This will bring
scattered clouds to mry after 01-02z with CIGS after 04-06z.

Sns being further inland should stayVFR through 06-08z.

Marine As of 04:43 pm pdt Monday... Generally light northwest
winds will prevail over the coastal waters through Tuesday. Mixed
seas will continue over the next few days with a light shorter
period northwest swell and a light southerly swell. A larger
moderate period northwest swell is forecast to arrive later this
week with forerunners expected in the next couple days.

Mtr watches warnings advisories
Tngt None.

Public forecast: as
aviation: W pi
marine: st
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRYC1 - 9415020 - Point Reyes, CA 33 mi48 min 57°F1015.7 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 34 mi28 min WNW 5.8 G 9.7 54°F8 ft1015.8 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 35 mi48 min W 5.1 G 6 63°F 1013.8 hPa
RCMC1 - 9414863 - Richmond, CA 38 mi48 min NNW 1 G 2.9 60°F 61°F1014.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi37 min W 8 59°F 1015 hPa
SFXC1 - San Francisco Bay Reserve, CA 40 mi93 min WNW 7 72°F 1013 hPa45°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 41 mi48 min SW 8.9 G 12 61°F 1015.1 hPa
UPBC1 41 mi48 min WNW 11 G 13
MZXC1 - 9415102 - Martinez-Amorco CA 41 mi48 min WNW 8.9 G 11 67°F 64°F1014 hPa50°F
PCOC1 - 9415144 - Port Chicago, CA 44 mi48 min W 8.9 G 12 67°F 65°F1013.9 hPa
FTPC1 - 9414290 - San Francisco, CA 45 mi48 min WSW 6 G 15 55°F 57°F1015.2 hPa
46237 - San Francisco Bar, CA (142) 45 mi48 min 56°F5 ft
PXSC1 46 mi48 min 58°F 52°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi48 min W 9.9 G 13 58°F 1015 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 47 mi28 min NW 7.8 G 12 53°F 55°F7 ft1016.5 hPa
OBXC1 47 mi48 min 58°F 53°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 47 mi48 min SW 5.1 G 8 56°F 1014.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 48 mi48 min WSW 7 G 14
LNDC1 49 mi48 min WNW 4.1 G 5.1 61°F 1015.2 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA8 mi25 minSSE 710.00 miFair56°F46°F72%1014.2 hPa
Petaluma Municipal Airport, CA13 mi23 minVar 510.00 miFair52°F50°F94%1015.6 hPa
Novato / Gnoss Field, CA21 mi23 minN 1010.00 miFair57°F46°F67%1014.9 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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Last 24hrSE6CalmCalmSE3W3CalmCalmCalmCalmCalmCalmCalmN3CalmCalmCalmS4S6S6S7S9SE10S9SE7
1 day agoSE6CalmCalmCalmW3CalmW4NW4CalmCalmCalmCalmCalmN3CalmCalmCalmCalmSE5S6S6SW7S6S7
2 days agoSE5CalmCalmCalmNW4NW3CalmN4W3CalmW3CalmCalmCalm3NW44S345SW6S4S6SE4

Tide / Current Tables for Upper drawbridge, Petaluma River, San Pablo Bay, California
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Upper drawbridge
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Mon -- 02:45 AM PDT     5.85 feet High Tide
Mon -- 07:18 AM PDT     Sunrise
Mon -- 07:55 AM PDT     Moonset
Mon -- 09:16 AM PDT     1.19 feet Low Tide
Mon -- 02:39 PM PDT     6.51 feet High Tide
Mon -- 06:34 PM PDT     Sunset
Mon -- 07:26 PM PDT     Moonrise
Mon -- 09:49 PM PDT     0.47 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.24.65.65.85.54.63.52.41.61.21.42.43.95.36.36.565.13.82.51.40.70.51.1

Tide / Current Tables for Lakeville, Petaluma River, San Pablo Bay, California
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Lakeville
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Mon -- 02:34 AM PDT     5.60 feet High Tide
Mon -- 07:17 AM PDT     Sunrise
Mon -- 07:55 AM PDT     Moonset
Mon -- 08:56 AM PDT     1.19 feet Low Tide
Mon -- 02:28 PM PDT     6.23 feet High Tide
Mon -- 06:33 PM PDT     Sunset
Mon -- 07:26 PM PDT     Moonrise
Mon -- 09:29 PM PDT     0.47 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.44.75.55.65.14.23.12.11.41.21.62.74.15.36.16.25.64.63.32.11.10.50.61.3

Weather Map
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GEOS 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 (22,6,7,8)
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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.