Wednesday, June19, 2019 L-36.com


Marine Weather and Tides
Bolinas, 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 5:46AMSunset 8:35PM Wednesday June 19, 2019 9:41 AM PDT (16:41 UTC) Moonrise 9:48PMMoonset 6:55AM Illumination 95% 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- 837 Am Pdt Wed Jun 19 2019
Today..S winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft at 10 seconds.
Tonight..SW winds 10 to 15 kt. Wind waves around 3 ft. NW swell 5 to 7 ft at 11 seconds. Patchy fog.
Thu..SW winds 10 to 15 kt. Wind waves around 3 ft. NW swell 6 to 8 ft at 11 seconds.
Thu night..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 6 to 7 ft. NW swell 7 to 9 ft at 11 seconds.
Fri..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 4 to 5 ft. NW swell 8 to 10 ft at 11 seconds.
Fri night..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 7 to 9 ft at 11 seconds.
Sat..NW winds 15 to 20 kt. Wind waves around 3 ft. NW swell 6 to 8 ft.
Sun..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 7 to 9 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 5 to 7 ft with a dominant swell period of 10 seconds. Across the bar...combined seas 6 to 8 ft with a dominant swell period of 10 seconds. Maximum ebb current of 1.5 kt at 07:25 pm Wednesday and 3.1 kt at 06:49 am Thursday.
PZZ500 837 Am Pdt Wed Jun 19 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light to locally moderate south to southwesterly winds will prevail across the coastal waters with the exception of strengthening northerly winds over the northernmost outer waters. Strong northerly gale force winds are forecast to be confined mainly to the northernmost outer waters north of point reyes from this evening through at least Thursday evening. Gusty northerly winds will become more widespread across the coastal waters Thursday evening through Friday. This will result in steep fresh swell creating hazardous seas conditions, particularly for smaller vessels.


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 191605
afdmtr
area forecast discussion
national weather service san francisco bay area
905 am pdt Wed jun 19 2019

Synopsis Cooler temperatures are expected today and Thursday
before trending warmer Friday and Saturday. There is the potential
for moderately gusty offshore winds over the north and east bay
hills Thursday and Friday nights.

Discussion As of 9:05 am pdt Wednesday... The marine layer is
about 1500 feet deep and current satellite imagery shows coastal
low clouds extending well inland this morning. Stratus should be
fairly slow to clear from near-coastal areas as the area remains
under a moderate onshore flow, with 2.1 mb from sfo to sac. High
temperatures today are forecast to be a few degrees cooler than
yesterday in most places, with 60s to lower 70s at the coast, and
80s to lower 90s inland. Some of the warmest inland areas could
see highs in the middle 90s.

The upper level ridge off the california coast will continue to
weaken as an upper level low drops south from western canada into
the pacific northwest. This will lead to continued cooling during
the next couple of days. Thursday will be the coolest day as an
upper level disturbance moves south across nevada with the trough
axis moving through our district. This disturbance will tighten
an offshore surface pressure gradient with north to northeast
winds increasing Thursday night as this trough moves through. The
12z run of the nam12 model shows 925 mb winds in the 25 to 35 kt
range... Strongest winds over the higher terrain in napa county.

After weakening on Friday the north to northeast winds will ramp
up once again Friday night as the flow aloft becomes northeast on
the back side of the trough bringing another night of potentially
gusty winds for the north and east bay hills Friday night.

Currently there are no watches or advisories for the north and
east bay hills but will continue to monitor.

Longer range models indicate a long-wave upper trough over the
eastern pacific, with high pressure over the rocky mountain
states. This will maintain cool or near seasonally normal temps
going into the first week of summer.

Aviation As of 4:44 am pdt Wednesday... For 12z tafs.

Widespread stratus infiltrated well inland overnight under a very
deep marine layer. Low clouds will linger through the morning with
a relatively late burn off around 18z-19z today. CIGS will return
around 03z-04z this evening. Light and locally variable winds
will continue through the morning then strengthen becoming
westerly around 10-15 kt in the afternoon.

Vicinity of ksfo... Borderline MVFR to ifr CIGS will continue
till around 18z-19z. Confidence is low on timing, CIGS may end up
clearing slightly earlier than forecast. Light winds will turn
onshore this afternoon and strengthen to around 15 kt.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals... Ifr to lifr conditions will continue
till around 18z. Light to locally variable winds will turn
onshore this afternoon and strengthen to around 8-12 kt.

Marine As of 8:37 am pdt Wednesday... Generally light to
locally moderate south to southwesterly winds will prevail across
the coastal waters with the exception of strengthening northerly
winds over the northernmost outer waters. Strong northerly gale
force winds are forecast to be confined mainly to the northernmost
outer waters north of point reyes from this evening through at
least Thursday evening. Gusty northerly winds will become more
widespread across the coastal waters Thursday evening through
Friday. This will result in steep fresh swell creating hazardous
seas conditions, particularly for smaller vessels.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm
public forecast: sims
aviation: cw
marine: st
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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 mi32 min S 7.8 G 9.7 56°F 56°F1015.9 hPa
PRYC1 - 9415020 - Point Reyes, CA 24 mi54 min 56°F1015.1 hPa
46214 - Point Reyes, CA (029) 26 mi42 min 55°F11 ft
46237 - San Francisco Bar, CA (142) 28 mi72 min 57°F5 ft
FTPC1 - 9414290 - San Francisco, CA 37 mi60 min WSW 5.1 G 7 58°F 59°F1014.9 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 40 mi32 min SE 5.8 G 9.7 53°F1015.5 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi54 min W 2.9 G 5.1 59°F 1013.5 hPa
PXSC1 41 mi54 min 60°F 59°F
RCMC1 - 9414863 - Richmond, CA 43 mi54 min 63°F
OBXC1 44 mi54 min 59°F 59°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi54 min NW 7 G 8 59°F 1014.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 44 mi60 min Calm G 2.9
PPXC1 - 9414847 - Richmond (Point Potrero), CA 45 mi60 min SW 9.9 G 13 59°F 1014.8 hPa
AAMC1 - 9414750 - Alameda, CA 46 mi60 min Calm G 1 60°F 65°F1014.9 hPa
LNDC1 47 mi54 min SW 1.9 G 1.9 60°F 1014.4 hPa

Wind History for Point Reyes, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Half Moon Bay Airport, CA36 mi47 minSSE 910.00 miOvercast57°F55°F94%1015.2 hPa

Wind History from HAF (wind in knots)
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2 days agoSW3W4W4W5W4W5W4W5--NW4CalmCalmCalmS3S4S5S7SE8S8SE7SE8SE8S11S10

Tide / Current Tables for Southeast Farallon Island, California
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Southeast Farallon Island
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Wed -- 12:08 AM PDT     5.67 feet High Tide
Wed -- 05:50 AM PDT     Sunrise
Wed -- 07:21 AM PDT     -0.97 feet Low Tide
Wed -- 07:54 AM PDT     Moonset
Wed -- 02:32 PM PDT     4.38 feet High Tide
Wed -- 07:19 PM PDT     3.01 feet Low Tide
Wed -- 08:36 PM PDT     Sunset
Wed -- 10:46 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.75.54.73.520.6-0.4-0.9-0.8-0.20.71.82.93.84.34.34.13.63.233.13.54.14.8

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Wed -- 01:27 AM PDT     -0.00 knots Slack
Wed -- 04:48 AM PDT     -1.48 knots Max Ebb
Wed -- 05:49 AM PDT     Sunrise
Wed -- 07:54 AM PDT     Moonset
Wed -- 08:48 AM PDT     0.00 knots Slack
Wed -- 11:53 AM PDT     1.13 knots Max Flood
Wed -- 03:18 PM PDT     -0.00 knots Slack
Wed -- 05:25 PM PDT     -0.64 knots Max Ebb
Wed -- 08:37 PM PDT     Sunset
Wed -- 08:40 PM PDT     0.00 knots Slack
Wed -- 10:47 PM PDT     Moonrise
Wed -- 11:23 PM PDT     0.70 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.2-0.3-0.9-1.4-1.5-1.3-0.9-0.50.10.711.110.70.2-0.3-0.6-0.6-0.4-0.20.10.50.7

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (12,3,4,5)
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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.