Thursday, November14, 2019 L-36.com


Marine Weather and Tides
Bolinas, 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 6:47AMSunset 5:01PM Thursday November 14, 2019 4:09 PM PST (00:09 UTC) Moonrise 6:54PMMoonset 8:52AM Illumination 92% 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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PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 312 Pm Pst Thu Nov 14 2019
.small craft advisory in effect from Friday afternoon through late Friday night...
Today..S winds 5 to 10 kt, becoming W this afternoon. Wind waves 1 ft. W swell 2 to 4 ft at 15 seconds and sw around 2 ft at 13 seconds. A slight chance of sprinkles this morning. Patchy very light drizzle this afternoon.
Tonight..W winds around 5 kt. Wind waves 1 ft. W swell 3 to 5 ft at 19 seconds and sw around 2 ft at 13 seconds.
Fri..NW winds up to 10 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 18 seconds and S around 2 ft at 12 seconds.
Fri night..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft at 16 seconds.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. W swell 7 to 9 ft at 15 seconds.
Sat night..NW winds 5 to 10 kt. Wind waves 1 to 2 ft. W swell 6 to 8 ft at 15 seconds.
Sun..N winds 10 to 20 kt with gusts up to 25 kt. Wind waves 1 ft. W swell 4 to 6 ft.
Mon..N winds up to 10 kt. Wind waves 1 ft. W swell 5 to 7 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...seas 3 to 4 ft with a dominant period of 11 seconds. Across the bar...seas 4 to 5 ft with a dominant period of 11 seconds. Maximum ebb current of 4.1 kt at 04:49 pm Thursday and 1.1 kt at 06:07 am Friday.
PZZ500 312 Pm Pst Thu Nov 14 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light southerly winds across the coastal waters today. Winds switch to the northwest Friday and gradually increase into Friday night. A larger, longer period northwest swell will arrive and continue through Friday and Saturday. Wave heights around 10 feet will create hazardous conditions for small crafts Friday through Saturday.


7 Day Forecast for Marine Location Near Bolinas, CA
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location: 37.67, -123.15     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 142352
afdmtr
area forecast discussion
national weather service san francisco bay area
352 pm pst Thu nov 14 2019

Synopsis Cloudy and seasonably cool the rest of today as an
upper trough passes over the region. Another weak system will
approach from the northwest tonight into early Friday and some
sprinkles or drizzle cant be ruled out, especially for the coastal
hills. Otherwise turning partly cloudy and warmer by Friday
afternoon. High pressure builds this weekend leading to a warming
trend with mostly sunny skies. Dry pattern continues at least
through early next week.

Discussion As of 02:03 pm pst Thursday... A deep marine layer
remains in place at over 3,000 feet as a weak upper trough moves
through the region. Low cloud cover and an expanding marine layer
have generated some drizzle across the area this afternoon.

Temperatures are mainly in the upper 50s to upper 60s inland with
little additional warming expected for the rest of the day. Patchy
drizzle will also remain a possibility over the next couple of
hours.

Another weak shortwave trough will move through tonight and
into tomorrow morning that may generate a few showers for coastal
areas and out over the waters. This morning's run of the ECMWF is
a little more generous spreading showers across much of the north
bay. High res models have precip much more scattered showing the
best chances for showers drizzle outside of our area and over the
waters. Leaned towards the high res models for this afternoon's
forecast package and kept precip chances fairly low. After another
cloudy morning, expect partly cloudy skies by the afternoon with
temperatures a few degrees warmer than today as the trough exits
the region and high pressure begins to build. Most areas will
remain in the 60s with some isolated locations hitting the low
70s.

Warming will continue into the weekend as a ridge of high pressure
builds over the eastern pacific and expands into california. A
brief period of dry north to northeast winds will develop in the
hills late Friday night and into Saturday morning. Winds at this
time are not expected to be strong and humidity values will stay
moderate enough to keep fire danger below extreme levels. As
conditions dry out by Saturday afternoon, winds will have eased.

The upper ridge will then remain in place the rest of the weekend
with temperatures forecast to be back above normal (~5-10 deg f)
by Saturday and through Monday.

Models still show the ridge weakening on Tuesday as an upper
trough drops down the west coast from the pacific northwest.

Earlier runs of the GFS and ECMWF were quite different in regards
to this system with the GFS showing the trough moving inland
through interior ca and nv on Wednesday while the ecmwf
developed a cut off low along the california coast. Today's 12z
run of the gfs, however, now more closely aligns with the ECMWF in
showing the trough forming into a cut off low and sliding down
the california coast. Both models also show some precipitation
associated with this low, although at this point do not expect it
to be significant. Solutions diverge once again beyond Wednesday
afternoon. This is still fairly far out in the forecast and things
will likely change between now and then.

Looking out farther in the extended. A handful of the GFS and
ecmwf ensembles are showing some precip towards the end of the
month. The deterministic longer range gfs, however, does not. Will
continue to look out for signs of wetting rains in the future,
stay tuned to the forecast.

Aviation As of 3:50 pm pst Thursday... For 00z tafs. As a weak
boundary moves through the bay area, MVFRVFR CIGS continue and
will do so for much of the TAF period as mid-to-high clouds remain
over the region. Drizzle has fallen in isolated locations, but
has not impacted runways. Any lingering drizzle should be over
with by 2z. CIGS are forecast to lower tonight and into Friday
morning, but should remain generally MVFR withVFR expected later
in the morning continuing for most of the day with light winds.

Stronger, breezier winds can be expected in the late afternoon.

Vicinity of ksfo... Winds remain out of the south-southwest. The
breezier winds will subside over the next few hours, remaining
light overnight. CIGS will lower tonight and into Friday morning
before clearing later in the morning to early afternoon. Winds
shift back around to the northwest tomorrow afternoon with a few
stronger gusts possible.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Patchy drizzle is possible before 2z,
but should not impact runways or vis. CIGS will lower overnight
but remain MVFR. Winds will pick up in the late afternoon and
return to the northwest.

Marine As of 03:33 pm pst Thursday... Generally light southerly
winds across the coastal waters today. Winds switch to the
northwest Friday and gradually increase into Friday night. A
larger, longer period northwest swell will arrive and continue
through Friday and Saturday. Wave heights around 10 feet will
create hazardous conditions for small crafts Friday through
Saturday.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm from 3 am
public forecast: as
aviation: dk
marine: drp
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 17 mi40 min ENE 1.9 G 3.9 57°F 55°F1019.6 hPa
PRYC1 - 9415020 - Point Reyes, CA 24 mi52 min 55°F1018.3 hPa
46214 - Point Reyes, CA (029) 25 mi40 min 59°F4 ft
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 26 mi40 min WNW 5.8 G 7.8 57°F 58°F1019.3 hPa55°F
FTPC1 - 9414290 - San Francisco, CA 37 mi58 min W 2.9 G 5.1 55°F 55°F1019.6 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi59 min NNE 1 57°F 1019 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 41 mi50 min SSE 3.9 G 5.8 54°F 55°F1019.3 hPa51°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi52 min W 5.1 G 8 56°F 1018.2 hPa
PXSC1 41 mi82 min 58°F 57°F
RCMC1 - 9414863 - Richmond, CA 43 mi148 min S 6 G 8 57°F 56°F1019.1 hPa
OBXC1 44 mi52 min 57°F 57°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi52 min W 7 G 8.9 56°F 1019.1 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 44 mi52 min W 8.9 G 11
PPXC1 - 9414847 - Richmond (Point Potrero), CA 45 mi52 min SSW 5.1 G 8 58°F 1019.4 hPa
AAMC1 - 9414750 - Alameda, CA 46 mi58 min S 5.1 G 6 58°F 58°F1019.6 hPa
LNDC1 47 mi52 min SSW 4.1 G 5.1 59°F 1019.1 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA42 mi74 minWSW 48.00 miMostly Cloudy59°F52°F78%1019 hPa

Link to 5 minute data for KSFO

Wind History from SFO (wind in knots)
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Last 24hrW11NW7NW4CalmNW4SE6S5CalmCalmNE3CalmSW4CalmCalmSE4SE5SE6SE4E5E3SW9SW5SW4W9
1 day agoW10W10W9W11W11W7W10W7W3W6W4W6W5W6W8W9W9NW5N3NW11NW10NW8W14NW13
2 days agoW12W12W9CalmNW6W6W5W9W7W4W4W5W6W5W3CalmCalmCalmCalmN4N3NE4N3W7

Tide / Current Tables for Southeast Farallon Island, California
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Southeast Farallon Island
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Thu -- 12:26 AM PST     4.32 feet High Tide
Thu -- 05:20 AM PST     2.68 feet Low Tide
Thu -- 06:50 AM PST     Sunrise
Thu -- 08:51 AM PST     Moonset
Thu -- 11:09 AM PST     5.70 feet High Tide
Thu -- 05:01 PM PST     Sunset
Thu -- 06:13 PM PST     -0.58 feet Low Tide
Thu -- 06:53 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.34.33.93.432.72.83.244.75.45.75.54.83.62.20.8-0.1-0.6-0.40.31.22.23.2

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Thu -- 01:36 AM PST     -0.00 knots Slack
Thu -- 03:50 AM PST     -0.72 knots Max Ebb
Thu -- 06:51 AM PST     Sunrise
Thu -- 06:52 AM PST     0.00 knots Slack
Thu -- 08:52 AM PST     Moonset
Thu -- 09:49 AM PST     0.72 knots Max Flood
Thu -- 12:29 PM PST     -0.00 knots Slack
Thu -- 04:00 PM PST     -1.41 knots Max Ebb
Thu -- 05:01 PM PST     Sunset
Thu -- 06:52 PM PST     Moonrise
Thu -- 07:48 PM PST     0.00 knots Slack
Thu -- 10:51 PM PST     1.04 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.3-0.2-0.6-0.7-0.5-0.300.40.60.70.50.2-0.2-0.8-1.2-1.4-1.2-0.8-0.40.10.60.91

Weather Map
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wmap_P
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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (19,4,5,8)
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Ground Weather Radar Station San Francisco Bay Area, 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.