Monday, March25, 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 7:05AMSunset 7:26PM Sunday March 24, 2019 10:33 PM PDT (05:33 UTC) Moonrise 10:50PMMoonset 8:42AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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 Pm Pdt Sun Mar 24 2019
.small craft advisory in effect from 3 am pdt Monday through Monday evening...
Tonight..S winds 5 to 15 kt...becoming southeast 10 to 20 kt with gusts up to 25 kt after midnight. Wind waves 3 to 4 ft. W swell 5 to 7 ft at 17 seconds. A slight chance of rain this evening, then rain likely after midnight.
Mon..S winds 20 to 25 kt with gusts up to 35 kt. Wind waves 4 to 6 ft. W swell 6 to 8 ft at 16 seconds. Rain.
Mon night..SW winds 5 to 15 kt with gusts up to 25 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 13 seconds. A chance of showers.
Tue..SE winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 14 seconds. A chance of showers.
Tue night..S winds 20 to 30 kt with gusts up to 40 kt. Wind waves 5 to 7 ft. W swell 4 to 6 ft at 13 seconds. Rain.
Wed..SW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 4 to 7 ft at 13 seconds. Showers.
Wed night..SW winds 10 to 20 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. W swell 7 to 9 ft at 12 seconds. Showers likely.
Thu..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft. A chance of showers.
Fri..NW winds 5 to 15 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 16 seconds. Across the bar...combined seas 7 to 9 ft with a dominant period of 16 seconds. Maximum ebb current of 3.4 kt at 07:55 am Monday and 1.7 kt at 09:19 pm Monday.
PZZ500 844 Pm Pdt Sun Mar 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds southerly and rain developing through Monday morning ahead of approaching low pressure system and cold front. Gusty winds can be expected ahead of the front. Showers linger Monday night and Tuesday. Rain develops again during the mid-week then dry weather returns late week.


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 250441
afdmtr
area forecast discussion
national weather service san francisco bay area
941 pm pdt Sun mar 24 2019

Synopsis A pacific storm system will spread moderate rain
across the north bay late tonight and Monday morning, with light
rain then expected to develop south across much of the rest of the
area on Monday afternoon and evening. Periods of rain are then
likely to continue from Monday night through Thursday, with the
most widespread rainfall expected late Tuesday night into
Wednesday. Dry weather is forecast to return late in the week and
into next weekend.

Discussion As of 9:00 pm pdt Sunday... Evening IR satellite
imagery shows a large upper low centered about 800 miles off the
coast of the pacific northwest. To the south and east of this low
center is the initial frontal boundary that is currently
approaching the northern california coast. Models forecast light
warm advection rainfall to develop out ahead of the frontal
boundary and into the north bay by around midnight tonight, and
the kmux radar is already showing weak returns near northwest
sonoma county. Latest hrrr and the 00z NAM indicate that rain
rates will increase in the north bay late tonight as the frontal
boundary approaches our coast. Moderate to locally heavy rainfall
can be expected in the north bay from late tonight through the
Monday morning commute. The latest hrrr also forecasts moderate
rainfall rates developing as far south and east as the san
francisco peninsula and western alameda county by midday tomorrow.

The frontal boundary is then forecast to weaken significantly as
it pushes south into the south bay and monterey bay area on Monday
afternoon and evening. Rainfall totals in the north bay through
Monday evening are forecast to range from 0.5-1.5 inches with as
much as 2 inches possible in northwest sonoma county. Rain totals
through late Monday for the remainder of our area are expected to
be a quarter inch or less except up to a half inch along the sf
peninsula, and locally in the santa cruz mountains and east bay
hills.

The weakened frontal boundary is forecast to stall along a line
from about san jose to monterey late Monday night and persist
there through Tuesday. During this time frame, scattered showers
will be most likely near the stalled frontal boundary, but could
occur most anywhere in our area. In any case, rainfall amounts
from late Monday night through Tuesday evening are expected to be
light.

The upper low will finally begin to approach the far northern
california coast late Tuesday night. A vigorous shortwave trough
rotating around the low is expected to bring another round of
widespread rainfall to our area from late Tuesday night through
Wednesday morning. Scattered showers will continue into Wednesday
afternoon and evening. In addition, the airmass will become
increasing unstable late Tuesday night and Wednesday morning as
the upper low approaches and we could see isolated thunderstorms
on Wednesday. The upper low will be very slow to move to the
northeast and out of our area, so scattered showers may continue
through Wednesday night and into Thursday, primarily across the
northern portion of our area. Additional rainfall from Tuesday
through Thursday is forecast to range from 0.50-1.50" in most
areas, with as little as 0.25" in our far southern valleys and as
much as 2 inches in northwest sonoma county. Forecast rainfall
from late tonight through Thursday will mostly be beneficial,
although some minor nuisance flooding is possible in the north
bay, particularly on Monday morning.

Gusty winds can be expected at times through midweek. South winds
may gust as high as 35 mph along the coast of the sf bay area
from late tonight through early Monday afternoon. More widespread
gusty winds are then likely from late Tuesday through Wednesday
when southwest winds may gust up to 40 mph at the coast and in
the hills.

Southerly flow ahead of this system will result in mild
temperatures through early Wednesday, with cooling then expected
late Wednesday into Thursday. A forecast update earlier this
evening included increasing temperatures, particularly at night,
from Monday night through Tuesday night.

Longer range models indicate dry conditions will return by Friday
and continue into the weekend, although rain may develop in the
north bay by Sunday afternoon.

Aviation As of 9:41 pm pdt Sunday...VFR extending through the
evening with southerly wind flow, drying lower levels; the wrf
model's boundary layer and surface humidities initialized well
except rhs are over-forecast along the monterey county coast. High
pressure moving to the central coast is setting up a smx-sfo
pressure gradient, currently 2.0 mb, and the sfo-acv gradient is
3.1 mb. An eastern pacific trough will bring lowering ceilings,
mainly to the bay area, late tonight and Monday. MVFR ceilings
with light to moderate rain preceding an incoming cold front, post
frontal wind shifts over to sw-w direction Monday. Ifr ceilings
and visibilities in moderate to heavy rain over the north bay
mainly Monday morning. Light rain with a slow moving and weakening
cold front eventually arrives along the north central coast Monday
evening, front may stall in vicinity of central coast Monday night
and Tuesday.

Vicinity of ksfo...VFR, wind SE shifting to westerly by 23z Monday.

Tempo light rain 11z-15z Monday with gradually lowering ceilings
becoming MVFR in rain by 15z. Showers with frontal passage diminish
through Monday night.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR, wind e-se with SE wind increasing
in the salinas valley Monday morning and afternoon prior to cold
frontal passage late in the afternoon or evening. Light rain
developing 21z-22z and lasting into the evening as slow moving,
weakening cold front arrives, possibly stalling in the vicinity of
the central coast Monday night and Tuesday.

Marine As of 8:44 pm pdt Sunday... Winds southerly and rain
developing through Monday morning ahead of approaching low
pressure system and cold front. Gusty winds can be expected ahead
of the front. Showers linger Monday night and Tuesday. Rain
develops again during the mid-week then dry weather returns late
week.

Mtr watches warnings advisories
Tngt Sca... Pt reyes to pigeon pt 0-10 nm from 3 am
sca... Pigeon pt to pt pinos 0-10 nm from 3 am
sca... Pt arena to pigeon pt 10-60 nm
sca... Pt arena to pt reyes 0-10 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
public forecast: dykema
aviation marine: canepa
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 mi64 min 55°F5 ft
FTPC1 - 9414290 - San Francisco, CA 11 mi40 min 57°F 56°F1020.7 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 11 mi34 min S 14 G 18 56°F 56°F1021.1 hPa (-0.0)
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi29 min W 1 55°F 1021 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 15 mi34 min 57°F 1019.4 hPa (+0.0)
RCMC1 - 9414863 - Richmond, CA 15 mi40 min 58°F 57°F1020.1 hPa
PXSC1 15 mi34 min 59°F 46°F
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi34 min 60°F 1020.8 hPa (+0.0)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi64 min E 4.1 G 4.1
OBXC1 18 mi34 min 59°F 42°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi34 min 58°F 1020.5 hPa (+0.0)
PRYC1 - 9415020 - Point Reyes, CA 19 mi34 min 56°F1020.2 hPa (-0.0)
AAMC1 - 9414750 - Alameda, CA 20 mi40 min 58°F 58°F1020.9 hPa
LNDC1 21 mi34 min 59°F 1020.5 hPa (+0.0)
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 26 mi34 min 57°F 1020.3 hPa (+0.3)
UPBC1 32 mi64 min WNW 4.1 G 7
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi34 min 58°F 57°F1020.7 hPa (+0.5)39°F
RTYC1 - 9414523 - Redwood City, CA 34 mi34 min 58°F 60°F1021.1 hPa (+0.0)
PCOC1 - 9415144 - Port Chicago, CA 36 mi34 min 56°F 57°F1020.7 hPa (+0.4)
SFXC1 - San Francisco Bay Reserve, CA 42 mi109 min NE 1.9 49°F 1020 hPa43°F
46214 - Point Reyes, CA (029) 43 mi34 min 55°F7 ft
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 43 mi34 min S 16 G 19 55°F1020.6 hPa (+0.6)
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 44 mi34 min 57°F 1020.4 hPa (-0.0)

Wind History for San Francisco, CA
(wind in knots)    EDIT      (on/off)   Help
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
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
Last
24hr
W5
G8
W3
G6
S2
SW2
E3
S2
SW2
S1
N4
NE3
NE6
N7
NE5
NE6
NE6
NE7
N5
W3
W5
G10
W8
G13
W6
G10
SW2
G5
S4
E3
1 day
ago
S3
SE2
G5
SE4
G10
S7
G11
S3
SW4
W5
G8
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
2 days
ago
S3
SE4
SE3
SE5
G8
SE2
SE4
G7
SE6
G11
SE9
G13
SE5
G9
SE6
G10
SW1
SE4
SE4
G7
SE7
G10
SW3
SE3
SE3

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Novato / Gnoss Field, CA21 mi39 minN 010.00 miFair55°F50°F82%1020.7 hPa
San Francisco, San Francisco International Airport, CA23 mi38 minSE 710.00 miMostly Cloudy59°F43°F56%1020.2 hPa

Wind History from DVO (wind in knots)
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
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
Last 24hrN6CalmCalmCalmS4CalmN3S3CalmCalmCalmS3E6SE6SE8SE6SE6
G12
SE75SE6CalmCalmCalmCalm
1 day agoSE6CalmCalmCalmCalmS5S4Calm--W7NW10NW9NW10NW9
G15
NW9
G15
NW13W14
G20
W13
G21
W13
G20
W8
G16
W6
G13
CalmNE3E4
2 days agoCalmCalmCalmCalmCalmCalmCalmCalmSE6SE7S6SE6SE6SE7SE7SE10SE8SE9S9SE11SE6SE7
G13
SE8S9

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
Mon -- 03:02 AM PDT     4.09 feet High Tide
Mon -- 07:06 AM PDT     Sunrise
Mon -- 10:21 AM PDT     Moonset
Mon -- 10:21 AM PDT     0.03 feet Low Tide
Mon -- 04:30 PM PDT     3.09 feet High Tide
Mon -- 07:27 PM PDT     Sunset
Mon -- 10:19 PM PDT     1.40 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
2.33.13.84.13.93.42.71.80.90.300.10.61.322.733.12.82.421.61.41.5

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
Mon -- 02:01 AM PDT     2.67 knots Max Flood
Mon -- 04:57 AM PDT     -0.00 knots Slack
Mon -- 07:06 AM PDT     Sunrise
Mon -- 08:05 AM PDT     -4.15 knots Max Ebb
Mon -- 10:20 AM PDT     Moonset
Mon -- 12:05 PM PDT     0.01 knots Slack
Mon -- 03:03 PM PDT     3.07 knots Max Flood
Mon -- 06:25 PM PDT     -0.01 knots Slack
Mon -- 07:26 PM PDT     Sunset
Mon -- 08:39 PM PDT     -2.17 knots Max Ebb
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
1.12.22.72.31.4-0.1-1.9-3.5-4.1-3.8-2.8-1.6-0.11.52.73.12.820.7-0.9-2-2.1-1.7-1

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 (1,6,7,8)
      (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.