Thursday, July18, 2019 L-36.com


Marine Weather and Tides
Stinson Beach, CA

Version 3.4
NOTICE
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 2:35 PM PDT (21:35 UTC) Moonrise 9:01PMMoonset 6:36AM Illumination 97% 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
    EDIT      (on/off)   Help
PZZ545 Coastal Waters From Point Reyes To Pigeon Point California Out To 10 Nm- 844 Am Pdt Thu Jul 18 2019
Today..SW winds 10 to 15 kt. Wind waves around 3 ft.
Tonight..SW winds 5 to 10 kt. Wind waves around 3 ft.
Fri..S winds 10 to 15 kt. Wind waves 3 to 4 ft.
Fri night..S winds 10 to 15 kt. Wind waves 3 to 4 ft.
Sat..S winds 10 to 15 kt. Wind waves 3 to 4 ft.
Sat night..SW winds 5 to 10 kt. Wind waves around 3 ft. Patchy fog.
Sun..W winds 5 to 10 kt. Wind waves 2 ft or less. Patchy fog.
Mon..W winds 10 to 15 kt. Wind waves around 3 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...southwest swell 3 to 4 ft with a dominant period of 17 seconds. Across the bar...southwest swell 4 to 5 ft with a dominant period of 17 seconds. Maximum ebb current of 1.7 kt at 07:01 pm Thursday and 2.8 kt at 06:49 am Friday.
PZZ500 844 Am 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... Generally light to moderate northwest winds will persist through Monday with locally gusty winds over the northern outer waters. Lighter southerly flow can be expected along the coast today and into the start of the weekend. The sea state will continue to be dominated by short period wind generated waves along with a light long period southerly swell.


7 Day Forecast for Marine Location Near Stinson Beach CDP, CA
   Hourly   EDIT   Help
location: 37.85, -122.67     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 182050
afdmtr
area forecast discussion
national weather service san francisco bay area
150 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 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 10:32 am pdt Thursday... For 18z tafs. The
marine layer remains at around 2000 ft agl per the fort ord
profiler with satellite imagery showing stratus eroding inland.

Vfr conditions expected for the rest of the day and into this
evening. Guidance is now showing stratus redeveloping earlier this
evening compared to yesterday, so moved forward return times by a
couple of hours for the 18z package. Onshore winds this afternoon
10-15 kt with gusts 20-25 kt at the typically windy spots.

Vicinity of ksfo...VFR. Westerly winds 10-15 kt with gusts to 25
kt this afternoon. Expecting sfo to see MVFR conditions overnight.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR this afternoon before low CIGS return
this evening. Expecting an earlier return for kmry than was seen
yesterday as well as another early return of stratus for ksns.

Onshore winds this afternoon 10-15 kt with locally gusty winds
down the salinas valley.

Marine As of 08:44 am pdt Thursday... Generally light to
moderate northwest winds will persist through Monday with locally
gusty winds over the northern outer waters. Lighter southerly flow
can be expected along the coast today and into the start of the
weekend. The sea state will continue to be dominated by short
period wind generated waves along with a light long period
southerly swell.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt arena to pt reyes 0-10 nm until 3 pm
sca... Sf bay until 9 pm
public forecast: rgass
aviation: as
marine: as
visit us at

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46237 - San Francisco Bar, CA (142) 5 mi66 min 57°F4 ft
FTPC1 - 9414290 - San Francisco, CA 11 mi60 min WSW 11 G 16 60°F 60°F1014.2 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 11 mi36 min SW 5.8 G 7.8 56°F 55°F1014.9 hPa (-0.4)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi61 min S 14 61°F 1014 hPa
RCMC1 - 9414863 - Richmond, CA 15 mi48 min 64°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 15 mi48 min WSW 6 G 14 64°F 1012.9 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi48 min SW 17 G 21 60°F 1013.8 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi60 min WSW 9.9 G 11
OBXC1 18 mi54 min 63°F 60°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi48 min W 8.9 G 12 64°F 1013.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 19 mi48 min 55°F1014.1 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi60 min W 8 G 12 67°F 69°F1014.2 hPa
LNDC1 21 mi48 min W 9.9 G 13 65°F 1013.7 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 26 mi48 min SW 18 G 21 65°F 1012 hPa
UPBC1 32 mi48 min W 13 G 15
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi60 min WSW 11 G 13 73°F 72°F1012.1 hPa
RTYC1 - 9414523 - Redwood City, CA 34 mi48 min NW 13 G 16 73°F 74°F1013.6 hPa
PCOC1 - 9415144 - Port Chicago, CA 36 mi48 min W 17 G 18 72°F 70°F1011.9 hPa
SFXC1 - San Francisco Bay Reserve, CA 42 mi111 min W 9.9 76°F 1012 hPa60°F
46214 - Point Reyes, CA (029) 43 mi36 min 53°F5 ft
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 43 mi36 min WNW 7.8 G 9.7 51°F1013.7 hPa (+0.0)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 44 mi48 min NW 14 G 18 75°F 1011 hPa

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last
24hr
W12
G19
W13
G19
W12
G18
W11
G16
SW10
G16
SW14
G20
SW10
G18
S5
G13
SW8
G12
SW8
G14
SW5
G11
W7
G15
SW8
G12
SW6
G11
W6
G14
SW5
G10
W7
G17
SW6
G14
W8
G12
SW10
G13
SW12
G18
SW8
G16
SW7
G12
SW12
G19
1 day
ago
SW14
G20
SW17
G25
W10
G18
SW15
G21
SW11
G18
SW8
G16
SW12
G20
SW12
G20
SW5
G13
SW7
G10
SW3
G6
S4
G8
S4
G10
S2
G7
SW3
W6
SW5
G8
W3
G7
W7
G13
W11
G15
W7
G12
W12
G17
SW11
G16
SW13
G19
2 days
ago
SW12
G20
SW17
G22
SW16
G21
SW16
G24
SW12
G21
SW12
G20
SW11
G20
SW13
G19
SW13
G18
SW13
G18
W11
G15
SW12
G17
SW11
G18
SW8
G17
SW4
G9
SW5
G10
W2
G9
SW6
G10
S8
G11
SW5
G13
SW10
G16
SW9
G17
W13
G21
SW13
G19

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA21 mi41 minE 1010.00 miFair77°F59°F54%1012.2 hPa
San Francisco, San Francisco International Airport, CA23 mi40 minNE 710.00 miMostly Cloudy73°F57°F59%1013 hPa

Wind History from DVO (wind in knots)
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
-12
PM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last 24hrNW9
G14
64
G13
SW6CalmNE4CalmN6NW5NW6CalmCalmCalmCalmCalmCalmCalmN6Calm4CalmE8E7E6
1 day agoW19
G29
W22
G29
W21
G29
W18
G32
S13SW7
G14
SE4E4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm344
2 days agoSW11
G17
S85
G12
S8
G15
S12S7
G13
Calm4CalmCalmNE5NE4CalmNW4CalmCalmN4CalmCalm44SE9SW12
G19
SW19
G24

Tide / Current Tables for Bolinas Lagoon, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Bolinas Lagoon
Click for Map
Thu -- 12:18 AM PDT     4.23 feet High Tide
Thu -- 06:02 AM PDT     Sunrise
Thu -- 07:36 AM PDT     Moonset
Thu -- 07:55 AM PDT     -0.34 feet Low Tide
Thu -- 02:27 PM PDT     3.39 feet High Tide
Thu -- 07:53 PM PDT     1.78 feet Low Tide
Thu -- 08:31 PM PDT     Sunset
Thu -- 10:00 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
4.24.23.732.11.10.3-0.2-0.3-0.10.61.42.22.93.33.33.12.62.21.91.822.63.3

Tide / Current Tables for San Francisco Bay Entrance (Golden Gate), California Current
   EDIT      (on/off)   Help   One Week of Data
San Francisco Bay Entrance (Golden Gate)
Click for Map
Thu -- 02:25 AM PDT     -0.00 knots Slack
Thu -- 05:41 AM PDT     -4.79 knots Max Ebb
Thu -- 06:02 AM PDT     Sunrise
Thu -- 07:35 AM PDT     Moonset
Thu -- 09:41 AM PDT     0.01 knots Slack
Thu -- 12:44 PM PDT     3.72 knots Max Flood
Thu -- 04:02 PM PDT     -0.01 knots Slack
Thu -- 06:15 PM PDT     -2.31 knots Max Ebb
Thu -- 08:29 PM PDT     Sunset
Thu -- 09:32 PM PDT     0.00 knots Slack
Thu -- 09:59 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.620.7-1.1-3.2-4.5-4.7-4.1-2.9-1.30.62.53.53.73.11.90.1-1.6-2.3-2.1-1.5-0.60.61.8

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (17,4,5,8)
      (on/off)   Help

Ground Weather Radar Station San Francisco Bay Area, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.