Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Cloverdale, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:50AMSunset 8:25PM Thursday May 24, 2018 6:57 AM PDT (13:57 UTC) Moonrise 2:40PMMoonset 2:26AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 300 Am Pdt Thu May 24 2018
Today..W winds around 5 kt...increasing to 5 to 10 kt this afternoon. Wind waves 2 ft or less. W swell 4 to 5 ft at 12 seconds and S 3 to 4 ft at 16 seconds.
Tonight..W winds up to 10 kt. Wind waves 2 ft or less. W swell 4 to 5 ft at 11 seconds and S 3 to 4 ft at 16 seconds. A slight chance of showers.
Fri..SW winds up to 10 kt. Wind waves 2 ft or less. W swell 4 to 5 ft at 11 seconds and S around 3 ft at 15 seconds. A chance of showers.
Fri night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell W 4 to 5 ft at 11 seconds and S around 3 ft at 15 seconds. A slight chance of showers.
Sat..NW winds 15 to 25 kt with gusts up to 35 kt. Wind waves 4 to 6 ft. Mixed swell nw 4 to 6 ft at 11 seconds and S around 3 ft at 14 seconds.
Sat night..NW winds 15 to 25 kt with gusts up to 35 kt. Wind waves 3 to 5 ft. NW swell 3 to 5 ft at 11 seconds.
Sun..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 3 to 5 ft.
Memorial day..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft.
PZZ500 300 Am Pdt Thu May 24 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds across the waters today and tonight. The strongest winds today will be located in the northern san francisco bay. Northwest winds pick up by mid day tomorrow and become locally moderate by tomorrow night through the upcoming weekend. Mixed seas with a longer period southwest swell and a smaller northwest swell. Increasing winds later this weekend will bring locally steep fresh swell.

7 Day Forecast for Marine Location Near Cloverdale, CA
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location: 38.77, -122.99     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 241101
afdsto
area forecast discussion
national weather service sacramento ca
401 am pdt Thu may 24 2018

Synopsis
Afternoon and evening thunderstorms possible mainly over higher
terrain this week. These are expected to extend across the valley
later this week. Slightly cooler than normal temperatures
continue across most of the region through Saturday, warming to
well above normal early next week.

Discussion
A cool upper trough currently off the coast will approach and
move inland late tonight into Friday. Showers and thunderstorms
are expected over the mountains this afternoon and evening.

Widespread showers are expected by Friday morning, including
across the delta, valley and foothills. Thunderstorms will once
again develop in the mountains and foothills, potentially into
portions of the valley. Snow levels will drop enough to allow
some snow at high sierra pass levels south of highway 50, such as
ebbetts and sonora passes. Current projected snow accumulations
continue to be about 3 to 6 inches above 8000 feet through
Saturday morning. High temperatures trend well below normal
Thursday and Friday. Friday highs across the valley are expected
to be in the upper 60s, about 10 to 15 degrees below normal. For
downtown sacramento the forecast record low maximum is 65 degrees,
set in 1915. The current forecast high is a few degrees higher,
at 68, so it could be close.

Showers linger across much of the area Saturday morning, then
gradually shift eastward as the upper low exits to the east.

Mountain showers and thunderstorms are possible again in the
afternoon and evening hours. Anyone planning outdoor activities
for the holiday weekend should be prepared for these storms, and
have shelter available, especially from lightning. High elevation
hikers and campers should also be prepared for unseasonably cool
temperatures and snow showers. Temperatures over the valley will
warm quite a bit as ridging builds in and skies begin to clear,
with highs 10 to 15 degrees higher than Friday, in the upper 70s
to lower 80s.

Sunday looks mainly dry, except for some lingering showers and
afternoon thunderstorms over the sierra crest south of i80. Highs
in the valley and delta will increase about another 10 degrees,
reaching the mid to upper 80s, near 90 for the northern
sacramento valley. Ek
.Extended discussion (Monday through Thursday)
the end of the memorial day weekend Monday will start out very
warm under upper level high pressure over the west coast. All
areas should see dry conditions with daytime highs expected to
hit as much as 10 to 15 degrees above normal. ECMWF brings a weak
shortwave into the pacific northwest on Tuesday for a threat of
showers over the sierra cascade range while GFS is much weaker on
this feature. Split the difference leaving a slight threat of
showers or thunderstorms over the northern sierra Tuesday
afternoon but affect on daytime temperatures should be minimal.

Models agree slightly better on Wednesday in bringing a stronger
upper trough into the west coast on Wednesday for a better threat
of sierra showers or thunderstorms and a cool off in daytime highs
down to just a bit above normal. Upper troughing remains over the
west coast going into the end of the week with a little more
cooling Thursday back down to near normal for this time of year.

Sierra shower thunderstorm threat gets reduced Thursday but still
can not rule it out all together with upper trough axis expected
to be somewhere near the sierra range.

Aviation
Vfr conditions are expected at the TAF sites the next 24 hours.

Scattered showers and t-storms over the mountains after about 21z.

MVFR ifr in the vicinity of any this activity. Scattered marine
stratus in the delta. Breezy west winds in the delta 15 to 25
knots. South to west winds to 15 knots elsewhere after 18z.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 40 mi40 min Calm G 1.9 52°F 52°F1016.9 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 40 mi48 min W 7.8 G 9.7 54°F 1016.4 hPa51°F

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, CA20 mi65 minN 010.00 miOvercast55°F50°F83%1014.5 hPa

Wind History from STS (wind in knots)
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Last 24hrS3S3W3S4S3S8S9S8S5SW9SW7S5SW8W85SW3S5S5SE5SE3S3W4CalmCalm
1 day agoS3SW4S3336S6S9S8S9SE11SE11SE11SE11SE9SE6SE7S3SE3SE4SE3CalmW4Calm
2 days agoCalmSW3Calm45S75
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Tide / Current Tables for Fort Ross, California
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Fort Ross
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Thu -- 02:05 AM PDT     1.18 feet Low Tide
Thu -- 03:27 AM PDT     Moonset
Thu -- 05:54 AM PDT     Sunrise
Thu -- 07:41 AM PDT     4.20 feet High Tide
Thu -- 01:49 PM PDT     0.55 feet Low Tide
Thu -- 03:41 PM PDT     Moonrise
Thu -- 08:25 PM PDT     Sunset
Thu -- 08:26 PM PDT     5.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.11.41.21.422.73.54.14.23.83.12.11.30.70.60.91.72.83.94.95.55.54.93.9

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Thu -- 03:26 AM PDT     0.00 knots Slack
Thu -- 03:28 AM PDT     Moonset
Thu -- 05:54 AM PDT     Sunrise
Thu -- 06:21 AM PDT     0.81 knots Max Flood
Thu -- 09:01 AM PDT     -0.00 knots Slack
Thu -- 11:54 AM PDT     -0.94 knots Max Ebb
Thu -- 03:28 PM PDT     0.00 knots Slack
Thu -- 03:41 PM PDT     Moonrise
Thu -- 06:38 PM PDT     1.03 knots Max Flood
Thu -- 08:26 PM PDT     Sunset
Thu -- 09:32 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-0.9-0.6-0.20.30.60.80.80.50-0.5-0.9-0.9-0.9-0.6-0.20.30.7110.80.3-0.3-0.8

Weather Map and Satellite Images
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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.
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Wind Forecast for Sacramento, CA (9,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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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.