Tuesday, March26, 2019 L-36.com


Marine Weather and Tides
Stinson Beach, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:02AMSunset 7:28PM Tuesday March 26, 2019 2:57 AM PDT (09:57 UTC) Moonrise 12:00AMMoonset 10:03AM Illumination 71% Phase: Waning Gibbous; Moon at 20 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 Point Reyes To Pigeon Point To 10 Nm- 901 Pm Pdt Mon Mar 25 2019
.small craft advisory in effect from Tuesday evening through late Tuesday night...
Tonight..N winds 5 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 13 seconds. Scattered showers late in the evening. Isolated showers after midnight.
Tue..NE winds 10 kt...becoming southeast in the afternoon. Wind waves 2 ft or less. W swell 6 to 8 ft at 13 seconds and sw 3 ft at 16 seconds. Slight chance of showers through the day.
Tue night..S winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 4 to 6 ft at 13 seconds. Chance of rain in the evening, then rain after midnight.
Wed..SW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 7 ft at 13 seconds. Showers and slight chance of Thunderstorms.
Wed night..SW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 7 to 9 ft at 12 seconds. Chance of showers.
Thu..W winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 5 to 7 ft. Chance of showers.
Fri..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 4 to 6 ft and sw 3 ft.
Sat..NW winds 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 6 to 8 ft with a dominant of 14 seconds. Across the bar...combined seas 7 to 9 ft with a dominant period of 14 seconds. Maximum ebb current of 1.7 knots at 09:19 pm Monday and 3.0 knots at 08:37 am Tuesday.
PZZ500 901 Pm Pdt Mon Mar 25 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure off the oregon coast will keep light to moderate southerly winds through Tuesday night. Stronger winds can be expected over the northern waters Tuesday night. Winds will switch to southwest on Wednesday and Thursday as high pressure builds off the california coast.


7 Day Forecast for Marine Location Near Stinson Beach, 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 260530
afdmtr
area forecast discussion
national weather service san francisco bay area
1030 pm pdt Mon mar 25 2019

Synopsis A weak front continues to slowly push through the bay
area resulting in showers this evening. The front will stall over
the south bay and central coast on Tuesday keeping a chance of
showers in the forecast for southern areas. The next front will
push into the area later Tuesday night into early Wednesday with
another organized chance of rain. Shower and isolated
thunderstorms will be possible Wednesday before ending by
Thursday. Drying trend Friday into the weekend.

Discussion As of 08:58 pm pdt Monday... A weak cold front
continues to slowly move south and east through the bay area this
evening. Latest surface analysis indicates the front has push
through san francisco and is now moving through the santa cruz
mountains. Rainfall since this morning has been greatest across
the north bay, coastal santa cruz mts and higher terrain of the
east bay. Latest kmux radar imagery still indicates rain showers
ahead and along the cold front. Recent trends on radar do show the
front is starting to lose some steam. Taking a closer look one
can see a nice rain shadow effect happening on the lee side of the
santa cruz mts. Based on trends from radar and latest hi-res
model (hrrr) decided to update evening forecast lowering rain
potential monterey southward and over san benito county. Lowered
rainfall amounts to a tenth or two.

Take a sneak peak at the 00z models - the NAM really dries things
out overnight while the GFS is a little wetter. That being said,
both models continue shower activity tomorrow as the frontal
boundary continues to weaken and small waves vort maxes moves
through the region.

Prev discussion As of 1:51 pm pdt Monday... A frontal boundary is
weakening as it passes through the bay area this afternoon and
evening. Showers will continue to impact the afternoon evening
commute but mainly be light to occasionally moderate in intensity.

Shower activity will decrease this evening and overnight. The
surface boundary will wash out over the south bay and central
coast by early Tuesday morning.

As the main upper trough approaches on Tuesday, there may be
sufficient upper lift divergence over the left over surface
boundary to allow for more showers to develop on Tuesday. In
contrast to today the best chances will be from the far east bay
counties through the south bay and around the central coast in the
vicinity of the surface moisture boundary. The NAM model remains
most bullish on generating showers Tuesday while the ECMWF and gfs
are drier.

Rain chances will then increase again later Tuesday night into
weds, especially across the north bay as another surface front
approaches the region. This will lead to increased shower chances
right through weds morning. Enough cold air aloft by weds to allow
thunderstorm chances be put into the forecast (as inherited from
overnight shift).

The parent upper low responsible for all the shower chances the
next few days will finally move onshore late weds night into
Thursday morning. Precip chances should rapidly end by late
Thursday afternoon and evening. For all the talk of showers the
next few days, amounts in general look to be light with some
portions of interior monterey san benito potentially seeing no
rainfall at all. Daytime highs will be on the cool side of normal
with cloud cover and cool temps aloft. However, any peaks of
sunshine will allow temps to jump into the 60s most days.

High pressure to build Friday into the weekend with dry and mild
weather. Storm track remains somewhat active next week but right
now the best precip chances remain north of i-80.

Aviation As of 10:55 pm pdt Monday... For 06z tafs. The cold
front will continue to slide south across the region spreading
rain to area terminals from ksfo south. Showers will lingering
through tonight and likely through Tuesday. Winds will remain
light veering to the west behind the front... Otherwise winds will
be calm and variable overnight. MVFR toVFR CIGS will prevail
through much of the period.

Vicinity of ksfo... MVFR CIGS will prevail with showers gradually
tapering to vicinity showers overnight. Light west winds will
becoming light and variable overnight.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR to MVFR CIGS will prevail with
showers possible overnight as the front slides south. Light winds.

Marine As of 9:00 pm pdt Monday... Low pressure off the oregon
coast will keep light to moderate southerly winds through Tuesday
night. Stronger winds can be expected over the northern waters
Tuesday night. Winds will switch to southwest on Wednesday and
Thursday as high pressure builds off the california coast.

Mtr watches warnings advisories
Tngt None.

Public forecast: mm rww
aviation: cw
marine: W pi cw
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 mi58 min 55°F10 ft
FTPC1 - 9414290 - San Francisco, CA 11 mi46 min 53°F 56°F1018.4 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 11 mi38 min NW 5.8 G 7.8 53°F 55°F1018.7 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi47 min Calm 51°F 1018 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 15 mi40 min 53°F 1017.2 hPa
RCMC1 - 9414863 - Richmond, CA 15 mi40 min 56°F
PXSC1 15 mi46 min 54°F 51°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi40 min 53°F 1018.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi58 min W 8.9 G 8.9
OBXC1 18 mi40 min 54°F 51°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi40 min 53°F 1018.2 hPa
PRYC1 - 9415020 - Point Reyes, CA 19 mi40 min 56°F1018 hPa
AAMC1 - 9414750 - Alameda, CA 20 mi46 min 54°F 58°F1018.5 hPa
LNDC1 21 mi40 min 53°F 1018.1 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 26 mi40 min 53°F 1018 hPa
UPBC1 32 mi58 min WNW 7 G 9.9
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi40 min 57°F1018.2 hPa
RTYC1 - 9414523 - Redwood City, CA 34 mi40 min 53°F 59°F1018.7 hPa
PCOC1 - 9415144 - Port Chicago, CA 36 mi40 min 53°F 57°F1018.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 42 mi73 min SSW 2.9 51°F 1018 hPa49°F
46214 - Point Reyes, CA (029) 43 mi28 min 55°F10 ft
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 43 mi38 min NW 1.9 G 5.8 55°F1018.1 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 44 mi40 min 53°F 1017.9 hPa

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
Last
24hr
S4
S3
S3
G6
SE1
E1
E8
S4
G7
SE7
G12
SE9
G18
SE9
G17
SE8
G14
SE6
G9
S8
G17
S5
G9
S8
G16
S7
G16
SW4
G13
SW3
G6
SW4
W2
S1
W2
SW4
W3
G6
1 day
ago
E3
S2
SW2
S1
N4
NE3
NE6
N7
NE5
NE6
NE6
NE7
N5
W3
W5
G10
W8
G13
W6
G10
SW2
G5
S4
E3
SW5
SW5
G11
SW5
G10
SE1
2 days
ago
SW4
W4
G7
SW2
SW5
G8
SW6
G10
W4
G8
W9
G12
W8
G14
W8
G15
W12
G20
W9
G16
W10
G18
W10
G15
W8
G15
W7
G11
W7
G10
W6
W5
G8
W3
G6
S2
SW2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA21 mi63 minWNW 310.00 miOvercast48°F48°F100%1018.6 hPa
San Francisco, San Francisco International Airport, CA23 mi62 minW 58.00 miOvercast54°F48°F80%1018.1 hPa

Wind History from DVO (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
Last 24hrS6S5S5S4SE7S11S17
G24
S13
G20
SE15
G23
SE9
G14
SE5S6
G13
S8
G15
SW7SW6Calm--CalmCalmCalmCalmCalmCalmCalm
1 day agoS4CalmN3S3CalmCalmCalmS3E6SE6SE8SE6SE6
G12
SE75SE6CalmCalmCalmCalmS5SW7CalmCalm
2 days agoCalmS5S4Calm--W7NW10NW9NW10NW9
G15
NW9
G15
NW13W14
G20
W13
G21
W13
G20
W8
G16
W6
G13
CalmNE3E4N6CalmCalmCalm

Tide / Current Tables for Bolinas Lagoon, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Bolinas Lagoon
Click for Map
Tue -- 12:53 AM PDT     Moonrise
Tue -- 03:47 AM PDT     3.90 feet High Tide
Tue -- 07:05 AM PDT     Sunrise
Tue -- 11:03 AM PDT     Moonset
Tue -- 11:22 AM PDT     0.11 feet Low Tide
Tue -- 05:52 PM PDT     2.93 feet High Tide
Tue -- 07:28 PM PDT     Sunset
Tue -- 11:24 PM PDT     1.67 feet Low Tide
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
1.92.63.23.83.93.73.22.51.60.90.40.10.20.61.21.82.42.82.92.82.52.21.91.7

Tide / Current Tables for South Channel, San Francisco Bay Approach, California Current
   EDIT      (on/off)   Help   One Week of Data
South Channel
Click for Map
Tue -- 12:52 AM PDT     Moonrise
Tue -- 01:27 AM PDT     0.84 knots Max Flood
Tue -- 04:43 AM PDT     -0.01 knots Slack
Tue -- 07:04 AM PDT     Sunrise
Tue -- 07:48 AM PDT     -1.50 knots Max Ebb
Tue -- 11:03 AM PDT     Moonset
Tue -- 11:41 AM PDT     0.00 knots Slack
Tue -- 02:49 PM PDT     1.09 knots Max Flood
Tue -- 06:31 PM PDT     -0.01 knots Slack
Tue -- 07:27 PM PDT     Sunset
Tue -- 08:30 PM PDT     -0.65 knots Max Ebb
Tue -- 11:51 PM PDT     0.00 knots Slack
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
0.60.80.80.60.3-0.2-0.8-1.4-1.5-1.3-0.9-0.40.20.711.110.70.3-0.3-0.6-0.6-0.5-0.3

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 (5,6,7,8)
      (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.