Sunday, September24, 2017 L-36.com


Marine Weather and Tides
Timber Cove, 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 7:00AMSunset 7:04PM Sunday September 24, 2017 5:22 AM PDT (12:22 UTC) Moonrise 10:20AMMoonset 9:03PM Illumination 15% 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- 238 Am Pdt Sun Sep 24 2017
Today..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 6 ft at 9 seconds.
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. Wind waves 1 to 3 ft. NW swell 3 to 5 ft at 9 seconds.
Mon night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 6 ft at 10 seconds.
Tue..N winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds.
Wed..N winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
Thu..W winds 5 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft.
PZZ500 238 Am 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 will continue off the northern california coast. A thermal trough will shift towards the coast resulting in decreasing winds for the inner waters today and the northern outer waters Tuesday.

7 Day Forecast for Marine Location Near Timber Cove, CA
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location: 38.52, -123.25     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 241034
afdmtr
area forecast discussion
national weather service san francisco bay area
334 am pdt Sun sep 24 2017

Synopsis High pressure off the west coast will gradually build
eastward and over california through midweek, maintaining a
warming trend through Wednesday. Slight cooling is expected late
in the week, but temperatures will remain above seasonal averages.

Discussion As of 3:30 am pdt Sunday... Skies remain clear
across our entire forecast area early this morning. Surface
pressure gradients remain weak onshore locally but have trended
offshore across northern california. Dry northerly flow aloft
continues to bring a dry airmass into the region and early morning
relative humidity values are as much as 25 percent lower compared
to this time yesterday morning. Also, the airmass aloft continues
to gradually warm as the upper ridge offshore builds slowly
towards the west coast. These factors point to a warmer day across
our region today. High temperatures today are forecast to be
anywhere from 3 to 8 degrees warmer than on Saturday. It's
possible we may see a few patches of fog develop along the coast
by sunrise, but any fog will clear by mid morning. The upshot is
that our entire area can expect a sunny and pleasant day with high
temperatures in 70s near the ocean and 80s elsewhere.

Offshore winds have eased in the hills since yesterday, but the
latest WRF model forecasts increasing north winds in the hills
through late morning, especially in the north bay. Locally
moderate and gusty offshore winds combined with a dry airmass will
continue to produce critical fire weather conditions in the north
bay mountains. A red flag warning remains in effect for the north
bay mountains until Tuesday morning (see fire weather discussion
below for more details).

The models have been consistent in maintaining a gradual warming
and drying trend through midweek as the upper ridge offshore
slowly builds over california. 850 mb temperatures are forecast
to increase from about 14 deg c today to nearly 20 deg c by
Tuesday and Wednesday. Meanwhile, light offshore flow will become
better established across the region by Tuesday. High temperatures
by Tuesday and Wednesday will climb into the upper 70s to mid 80s
near the coast... And from the mid 80s to mid 90s inland. If
offshore flow is slightly stronger than currently anticipated,
downtown san francisco could reach 90 by Tuesday or Wednesday
(instead of current forecast of low to mid 80s). Coastal
temperatures will be the most difficult part of the forecast this
week.

Although daytime temperatures will be very warm by midweek,
longer early autumn nights and a dry airmass will allow for
relatively good cooling overnight throughout the week. Overnight
lows are forecast to mostly be in the 50s at lower elevations.

Overnight cooling will help reduce heat risks which are currently
projected to remain in the low to moderate category through the
week.

Slight cooling is expected later in the week as the upper ridge
axis shifts to our east and light onshore flow develops.

Cooling on Thursday will mostly be confined to coastal areas,
while inland areas remain very warm. More widespread cooling is
likely by Friday. But even with the expected cooling late in the
week, temperatures will remain warmer than normal.

The longer range models agree that an upper ridge will strengthen
over california once again next weekend. However, the ecmwf
builds the ridge more strongly compared to the GFS and therefore
the european model solution would result in more robust warming
late in the extended.

Aviation As of 10:29 pm pdt Saturday... Light winds andVFR.

Patchy ifr CIGS are possible over the monterey bay early Sunday
morning.

Vicinity of ksfo...VFR.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR. Patchy ifr CIGS are possible around
sunrise.

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 10:13 pm pdt Saturday... Northwesterly winds will
be gusty over the northern waters while winds over the remaining
waters and bays remain light tonight. Surface high pressure
situated offshore will also periodically build across northern
nevada through early next week. A northwest swell train will
arrive by the middle of next week.

Mtr watches warnings advisories
Tday Sca... Pt pinos to pt piedras blancas 0-10 nm until 3 am
sca... Pigeon pt to pt piedras blancas 10-60 nm until 3 am
sca... Pt arena to pigeon pt 10-60 nm
public forecast: dykema
aviation: canepa
marine: canepa
fire weather: dykema
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 20 mi43 min NNW 7.8 G 12 57°F 58°F1013.1 hPa54°F
ANVC1 - 9416841 - Arena Cove, CA 37 mi53 min NE 7 G 9.9 57°F 52°F1013.9 hPa
PRYC1 - 9415020 - Point Reyes, CA 39 mi53 min Calm G 1 59°F 55°F1012.6 hPa
46214 - Point Reyes, CA (029) 41 mi53 min 60°F7 ft

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA23 mi30 minWNW 510.00 miFair47°F41°F80%1012.4 hPa

Wind History from STS (wind in knots)
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Last 24hrNW4NW3CalmCalmN7NW63NW8N7
G16
N7CalmW6W10SE6SE3CalmSW3CalmCalmNW4SW3W3W5W5
1 day agoCalmNW3CalmNW3Calm3S633S6SE6W10W5W5CalmCalmCalmCalmCalmCalmCalmNW3N3NW5
2 days agoNW4CalmCalmNW3N11NW10
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NW14W8W5NW8W6W5SE4S3SE3CalmCalmCalm

Tide / Current Tables for Fort Ross, California
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Fort Ross
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Sun -- 02:20 AM PDT     4.55 feet High Tide
Sun -- 07:02 AM PDT     Sunrise
Sun -- 08:03 AM PDT     2.02 feet Low Tide
Sun -- 11:20 AM PDT     Moonrise
Sun -- 02:01 PM PDT     5.25 feet High Tide
Sun -- 07:06 PM PDT     Sunset
Sun -- 08:47 PM PDT     0.78 feet Low Tide
Sun -- 10:03 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.44.14.54.54.13.42.72.222.22.83.64.455.254.43.42.41.50.90.81.11.8

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Sun -- 12:26 AM PDT     0.94 knots Max Flood
Sun -- 03:42 AM PDT     -0.00 knots Slack
Sun -- 06:09 AM PDT     -0.84 knots Max Ebb
Sun -- 07:03 AM PDT     Sunrise
Sun -- 09:41 AM PDT     0.00 knots Slack
Sun -- 11:21 AM PDT     Moonrise
Sun -- 12:27 PM PDT     0.75 knots Max Flood
Sun -- 03:24 PM PDT     -0.00 knots Slack
Sun -- 06:26 PM PDT     -1.14 knots Max Ebb
Sun -- 07:06 PM PDT     Sunset
Sun -- 10:03 PM PDT     Moonset
Sun -- 10:21 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.90.70.3-0.2-0.6-0.8-0.8-0.5-0.20.10.50.70.70.50.2-0.3-0.8-1.1-1.1-0.8-0.5-0.10.3

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 (8,2,3,4)
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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.