Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Tomales, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:59AMSunset 7:04PM Sunday September 24, 2017 7:39 PM PDT (02:39 UTC) Moonrise 10:18AMMoonset 9:02PM Illumination 20% Phase: Waxing Crescent; Moon at 4 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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PZZ540 Point Arena To Point Reyes To 10 Nm- 208 Pm Pdt Sun Sep 24 2017
Tonight..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 to 5 ft at 9 seconds.
Mon..NW winds 5 to 15 kt...increasing to 15 to 20 kt in the afternoon. Wind waves 3 to 5 ft. NW swell 3 to 5 ft at 9 seconds.
Mon night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 6 ft at 9 seconds.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft at 10 seconds.
Tue night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft at 10 seconds.
Wed..N winds 5 kt. Wind waves 2 ft or less...becoming 3 ft. NW swell 3 to 5 ft.
Thu..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft.
Fri..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 3 ft.
PZZ500 208 Pm Pdt Sun Sep 24 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure aloft will allow a thermal trough to develop at the surface over the coastal waters. This will keep the strongest northerly winds over the northern outer waters, west of point reyes with lighter wind and seas over the near shore waters. Generally light wind and seas are forecast in the bays the next few days. The upper ridge will stay in place through the week.

7 Day Forecast for Marine Location Near Tomales, CA
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location: 38.19, -122.92     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 250000
afdmtr
area forecast discussion
national weather service san francisco bay area
459 pm pdt Sun sep 24 2017

Synopsis A gradual warming trend will continue through the first
half of the workweek as high pressure across the eastern pacific
builds over california. While slightly cooling is expected late in
the week, temperatures are forecast to remain above seasonal
averages.

Discussion As of 01:58 pm pdt Sunday... Sunny conditions
persist over the region this afternoon as the air mass aloft warms
in response to weak offshore flow and building high pressure over
the eastern pacific. Meanwhile, at the surface, winds along the
coast remain light and slightly onshore while portions of the
interior are experiencing weak north northeast winds. These
conditions have resulted in a region- wide warming and drying
trend that will continue into the midweek time frame.

Look for temperatures overnight to remain on the cool side of
average for most valley and coastal locations while a more noticeable
warming trend begins in the hills. Temperatures region-wide will
continue on a warming trend Monday and ramp up Tuesday into
Wednesday as surface flow becomes predominantly offshore. By
midweek, 850 mb temperatures are forecast to approach 20 deg c and
will allow for afternoon high temperatures to reach into the
mid upper 80s at the coast with widespread 90s inland. However, even
the warmest inland areas are likely to stay below 100 degrees and a
more uniform temperature spread in the 80s to mid 90s appears most
likely Tuesday through Thursday. With this said, the threat for
heat related illnesses will likely remain in the low to moderate
category given decent overnight cooling.

Slight cooling is then forecast by Friday as weak onshore flow
returns to the coast in response to a mid upper level trough pushing
inland over the pacific northwest. However, the ridge of high
pressure does not completely get replaced and temperatures region-
wide will remain at or slightly above seasonal averages. The medium
to longer range forecast models agree that an upper level ridge will
once again become the dominate weather feature across our region by
late next weekend. This will likely lead to another warming trend by
next Sunday into Monday.

Aviation As of 4:59 pm pdt Sunday... Sct-bkn cirrus cloud coverage
associated with upper level divergence quickly sweeping SE with the
mid-latitude jet stream late this afternoon. High confidenceVFR
forecast for tonight through Monday as dry offshore flow and very
good visibilities prevail.

Vicinity of ksfo...VFR. A few westerly wind gusts to 20-25 knots until
04z this evening. Light surface wind shifting over to n-ne late tonight
into early Monday afternoon. Westerly winds are forecast to resume
from 22z Monday through Monday evening.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR. Onshore winds becoming light and shifting
over to e-se direction late tonight and Monday morning. Onshore wind
returns Monday afternoon and evening.

Fire weather As of 3:30 am pdt Sunday... Northerly winds have
eased in the hills since yesterday, but models indicate that
north winds will increase this morning and peak during the late
morning hours. Winds are expected to be strongest across the
north bay, although locally gusty winds are also likely in the
east bay hills. Relative humidity recoveries have been poor in the
hills overnight, with rh values remaining below 30 percent on the
higher peaks and ridges. Poor overnight humidity recoveries and
periods of moderate and gusty north to northeast winds are
forecast to persist through at least Tuesday morning. The most
critical fire weather conditions will remain over the north bay
mountains, particularly on Monday night and Tuesday morning when
winds are forecast to be at their strongest. A red flag warning
remains in effect for elevations above 1000 feet in the north bay
through Tuesday morning.

Marine As of 4:40 pm pdt Sunday... High pressure aloft will
allow a thermal trough to develop at the surface over the coastal
waters. This will keep the strongest northerly winds over the
northern outer waters, west of point reyes with lighter wind and
seas over the near shore waters. Generally light wind and seas are
forecast in the bays the next few days. The upper ridge will stay
in place through the week.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
public forecast: rgass
aviation: canepa
marine: rww
fire weather: dykema
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRYC1 - 9415020 - Point Reyes, CA 14 mi52 min W 14 G 18 65°F 58°F1013.1 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 21 mi40 min WNW 18 G 21 61°F 60°F1013.5 hPa (-0.7)55°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi50 min NW 7.8 G 9.7 59°F 59°F4 ft1013.7 hPa (+0.0)
46237 - San Francisco Bar, CA (142) 32 mi70 min 60°F3 ft
RCMC1 - 9414863 - Richmond, CA 33 mi52 min NW 6 G 8.9
46214 - Point Reyes, CA (029) 34 mi40 min 61°F5 ft
PPXC1 - 9414847 - Richmond (Point Potrero), CA 35 mi52 min SSW 4.1 G 5.1 69°F 1013.4 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 36 mi52 min W 8 G 11 74°F 1012.6 hPa
FTPC1 - 9414290 - San Francisco, CA 36 mi52 min SW 8.9 G 15
PXSC1 39 mi52 min 72°F 44°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 39 mi52 min WSW 7 G 12 71°F 1011.9 hPa
OBXC1 41 mi52 min 70°F 48°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 41 mi52 min WNW 1 G 2.9 69°F 1013 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 41 mi52 min W 5.1 G 7
LNDC1 43 mi52 min N 2.9 G 4.1 73°F 1012.9 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 43 mi52 min W 8.9 G 9.9 74°F 67°F1013 hPa46°F
AAMC1 - 9414750 - Alameda, CA 44 mi52 min WNW 5.1 G 7 70°F 68°F1013.4 hPa
SFXC1 - San Francisco Bay Reserve, CA 47 mi115 min ENE 8 82°F 1012 hPa29°F
PCOC1 - 9415144 - Port Chicago, CA 48 mi52 min W 8 G 11 74°F 68°F1012.5 hPa

Wind History for Point Reyes, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petaluma Municipal Airport, CA17 mi65 minW 810.00 miFair73°F37°F27%1012.9 hPa
Novato / Gnoss Field, CA20 mi45 minSE 610.00 miFair73°F35°F25%1012.9 hPa
Santa Rosa, Santa Rosa Sonoma County Airport, CA23 mi47 minN 010.00 miPartly Cloudy76°F35°F23%1011.6 hPa

Wind History from O69 (wind in knots)
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Last 24hrCalmN3CalmCalmCalmCalmNW4CalmCalmCalmCalmCalmCalmNW4--W54
G14
N4
G12
NW7W15
G20
W14W9
G15
W5W5
1 day agoN3CalmCalmCalmCalmNW5NW5CalmCalmCalmCalmCalmNW7NW66
G11
W6NW10
G15
N9W10
G18
SW15W13W11W7W4
2 days agoW9--CalmW4CalmN4CalmNW3CalmCalmCalm--CalmCalmCalmCalm5S7S11S8
G16
4W9W6
G11
W3

Tide / Current Tables for Blakes Landing, Tomales Bay, California
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Blakes Landing
Click for Map
Sun -- 03:43 AM PDT     4.07 feet High Tide
Sun -- 07:01 AM PDT     Sunrise
Sun -- 09:48 AM PDT     1.66 feet Low Tide
Sun -- 11:18 AM PDT     Moonrise
Sun -- 03:24 PM PDT     4.70 feet High Tide
Sun -- 07:04 PM PDT     Sunset
Sun -- 10:02 PM PDT     Moonset
Sun -- 10:32 PM PDT     0.64 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.82.63.444.13.83.32.72.11.81.722.73.54.24.74.64.23.52.61.81.10.70.7

Tide / Current Tables for Point Reyes, California Current
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Point Reyes
Click for Map
Sun -- 12:34 AM PDT     0.94 knots Max Flood
Sun -- 03:50 AM PDT     -0.00 knots Slack
Sun -- 06:17 AM PDT     -0.84 knots Max Ebb
Sun -- 07:01 AM PDT     Sunrise
Sun -- 09:49 AM PDT     0.00 knots Slack
Sun -- 11:18 AM PDT     Moonrise
Sun -- 12:35 PM PDT     0.75 knots Max Flood
Sun -- 03:32 PM PDT     -0.00 knots Slack
Sun -- 06:34 PM PDT     -1.14 knots Max Ebb
Sun -- 07:05 PM PDT     Sunset
Sun -- 10:03 PM PDT     Moonset
Sun -- 10:29 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.90.70.4-0.1-0.6-0.8-0.8-0.6-0.30.10.40.70.70.50.2-0.2-0.7-1.1-1.1-0.9-0.6-0.20.2

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (22,6,7,8)
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Ground Weather Radar Station Sacramento, CA
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weather_mapweather_map weather_map

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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.