Thursday, May23, 2019 L-36.com


Marine Weather and Tides
Lower Lake, 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 5:50AMSunset 8:23PM Wednesday May 22, 2019 10:16 PM PDT (05:16 UTC) Moonrise 11:10PMMoonset 8:05AM 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
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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 833 Pm Pdt Wed May 22 2019
.gale warning in effect until 3 am pdt Thursday...
Tonight..NW winds 25 to 35 kt...diminishing to 20 to 30 kt after midnight. Wind waves 8 to 9 ft. NW swell 13 to 15 ft at 11 seconds. SWell S around 3 ft.
Thu..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. NW swell 12 to 14 ft at 11 seconds.
Thu night..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 10 to 12 ft at 11 seconds.
Fri..S winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 7 to 9 ft at 10 seconds.
Fri night..NW winds 20 to 30 kt. Wind waves 4 to 5 ft. NW swell 6 to 8 ft at 9 seconds.
Sat..NW winds 20 to 30 kt with gusts up to 40 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 9 seconds.
Sat night..NW winds 5 to 15 kt. Wind waves around 3 ft. NW swell 4 to 6 ft at 11 seconds.
Sun..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
Memorial day..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 2 to 4 ft.
PZZ500 833 Pm Pdt Wed May 22 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure over the southern california interior will move into the great basin on Thursday. Strong northwest winds on the back side of the low including gale force winds over the northern waters will decrease Thursday night. A large northwest swell will persist through the end of the week particularly over the northern and outer waters.


7 Day Forecast for Marine Location Near Lower Lake, CA
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location: 38.89, -122.59     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 222203
afdsto
area forecast discussion
national weather service sacramento ca
303 pm pdt Wed may 22 2019

Synopsis
Generally light sierra showers and isolated afternoon thunderstorms
next couple of days as an upper low liners over the great basin.

Mainly dry elsewhere next couple of days with near normal
temperatures. Showers and isolated thunderstorms Friday through
memorial day as another low drops out of western canada.

Discussion
The upper level low which brought snow and thunderstorms yesterday
is currently centered over southern california. Mostly sunny
skies with some high and mid clouds are present across most of the
area. Temperatures are 5 to 18 degrees warmer than yesterday,
though will remain below normal for this time of year. Isolated
light showers are starting to develop over the sierra and
foothills. There could be enough instability for a few
afternoon evening thunderstorms to form over the mountains and
foothills.

Upper troughing over the great basin with northeasterly flow will
continue the shower and thunderstorm threat over the sierra
cascade range and foothills on Thursday. The airmass warms
slightly so should see a little warm up to slightly below normal
high temperatures for this time of year. Breezy northerly winds
are expected during the day, gusting up to 20 to 30 mph over the
northern and central sacramento valley.

Another upper low drops southward out of western canada Thursday
night will nudge the great basin low eastward bringing a temporary
dry period Thursday night and Friday morning. This break will be
short lived however with the upper low approaching norcal with a
threat of showers or thunderstorms for the mountains and the
northern sacramento valley by Friday afternoon. Daytime highs
will cool slightly on Friday then much more on Saturday as the
upper low continues southward through northern california. This
low will bring showers and afternoon isolated evening
thunderstorms to most of the area. Anyone planning weekend outdoor
activities should be prepared for periods of wet weather and
should be prepared to take shelter if thunderstorms develop. Daytime
highs are expected to drop to 10 to 15 degrees below normal, which
is the low 70s for the valley and delta. Ek
.Extended discussion (Sunday through Wednesday)
a closed upper low will be tracking across california towards the
southwest CONUS Sunday into Monday. Ensembles have been
consistent in indicating the potential for precipitation both on
Sunday and Monday. The better chances for showers and storms look
to be in the foothill and mountain regions Sunday, although light
valley rain will still be possible. Models indicate some
instability mainly north of i-80 across the area and have kept the
mention for scattered thunder on Sunday afternoon. Lingering
precipitation will be seen on memorial day. Models have a bit less
instability this day and have left the mention of thunder out at
this time. From here, dry valley conditions should be seen through
mid week with small precipitation chances at higher elevations.

Temperatures will be back on the rise Sunday through Wednesday,
with valley highs back into the 80s by Wednesday afternoon.

Aviation
"backwash" cloudiness will be spreading swward over norcal as
upper low moves from socal neward into utah. Most of norcal will
remainVFR, however local MVFR conditions in showers and isolated
thunderstorms can be expected over the W slope sierra with higher
terrain obscured. Lesser chance of a shower storm over the coastal
range. Areas of nly surface wind gusts up to 30 kts possible in
the vly through 03z thu, and over the west side of the vly
overnite. Local NE to E winds over the sierra gusting to 45 kts
overnite.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 56 mi91 min WNW 4.1 65°F 1008 hPa53°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 59 mi26 min NW 27 G 35 53°F16 ft1009.9 hPa
ANVC1 - 9416841 - Arena Cove, CA 59 mi28 min WNW 5.1 G 8.9 54°F 52°F1012.2 hPa

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, CA29 mi23 minN 710.00 miFair63°F53°F70%1007.9 hPa

Wind History from STS (wind in knots)
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Last 24hrW5W6W5S3CalmS4SE3CalmCalmNW4N7N4N6NW5NW7N3NW10NW8NW7
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2 days agoNW3N3CalmNW4CalmN5N3Calm3NW3CalmCalmSE4E4S4S5SW12SW11
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Tide / Current Tables for Napa, Napa River, Carquinez Strait, California
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Napa
Click for Map
Thu -- 12:07 AM PDT     Moonrise
Thu -- 04:50 AM PDT     6.65 feet High Tide
Thu -- 05:52 AM PDT     Sunrise
Thu -- 10:01 AM PDT     Moonset
Thu -- 12:24 PM PDT     -0.53 feet Low Tide
Thu -- 07:34 PM PDT     5.85 feet High Tide
Thu -- 08:20 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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33.54.45.56.46.66.35.44.12.51.10-0.5-0.40.31.52.84.15.25.85.85.34.63.8

Tide / Current Tables for Fort Ross, California
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Fort Ross
Click for Map
Thu -- 12:11 AM PDT     Moonrise
Thu -- 01:43 AM PDT     5.04 feet High Tide
Thu -- 05:55 AM PDT     Sunrise
Thu -- 09:02 AM PDT     -0.51 feet Low Tide
Thu -- 10:04 AM PDT     Moonset
Thu -- 04:27 PM PDT     4.27 feet High Tide
Thu -- 08:24 PM PDT     Sunset
Thu -- 09:30 PM PDT     2.98 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.54.954.73.92.81.60.5-0.3-0.5-0.30.41.32.23.23.94.24.243.63.2333.3

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (1,6,7,8)
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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.