Wednesday, May23, 2018 L-36.com


Marine Weather and Tides
Lower Lake, 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 5:49AMSunset 8:25PM Wednesday May 23, 2018 3:48 AM PDT (10:48 UTC) Moonrise 1:35PMMoonset 1:53AM Illumination 61% Phase: Waxing Gibbous; Moon at 8 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- 231 Am Pdt Wed May 23 2018
Today..SW winds around 10 kt. Wind waves 2 ft or less. W swell 3 to 4 ft at 11 seconds and sw 3 to 4 ft at 17 seconds.
Tonight..W winds around 10 kt. Wind waves 2 ft or less. W swell 4 to 6 ft at 12 seconds and sw 3 to 4 ft at 16 seconds.
Thu..S winds 10 kt. Wind waves 2 ft or less. W swell 4 to 5 ft at 12 seconds and sw 3 to 4 ft at 16 seconds. Slight chance of showers in the afternoon.
Thu night..S winds 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. Slight chance of showers in the evening, then chance of showers after midnight.
Fri..SE winds 10 kt...becoming nw. Wind waves 1 to 3 ft. W swell 4 to 6 ft at 11 seconds and S 3 ft at 15 seconds. Chance of showers in the morning, then slight chance of showers in the afternoon.
Sat..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 3 to 5 ft and S 3 ft...shifting to the nw around 3 ft.
Sun..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. NW swell 3 to 5 ft...becoming 3 to 4 ft. Patchy fog.
PZZ500 231 Am Pdt Wed May 23 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light northwest winds will prevail through midweek for the coastal waters. Winds are expected to increase through the golden gate gap, around angel island, and in the west delta by mid morning into mid afternoon today. Thus, a small craft advisory is in place for the northern san francisco bay and west delta for persistent wind gusts over 20 knots. By Thursday morning, winds are forecast to turn southerly as a weak low pressure system approaches from the west. This low will bring a chance of showers Thursday and Friday. Long period southwest swell will persist with a shorter period northwest swell through the week, decreasing by Friday.

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 222054
afdsto
area forecast discussion
national weather service sacramento ca
154 pm pdt Tue may 22 2018

Synopsis
Afternoon and evening thunderstorms possible mainly over higher
terrain this week. These may extend through the valley late in the
week. Slightly cooler than normal temperatures continue across
most of the region this week warming to above normal early next
week.

Discussion
A low pressure area centered over nevada continues to drift
northward during the day. Easterly flow continues to dominate
aloft, so afternoon mountains activity during the day will be
trying to push towards the valley once again with the best chances
in the valley during the evening hours over the central and
northern sacramento valley. The delta breeze is expected to remain
moderate to locally strong this evening and tonight. Temperatures
will remain on the cool side of normal as a result near the delta
influence areas. The only exception will be over the north end of
the valley which will warm well into the 80s. Some stratus will
possibly advect into the valley the next couple of mornings.

Wednesday will still have a decent delta breeze in place and
temperatures are expected to be slightly cooler across the region.

Unstable air over the mountains will continue with possible
afternoon and evening thunderstorm activity.

The low pressure area to our northwest will continue to move
closer to the region Thursday and Friday moving through Friday
night. This low will have cooler air associated with it so expect
temperatures to remain below normal for the latter part of the
week and unstable conditions each day. Snow levels may drop to
around pass levels during the day and below Friday night. At this
time though precipitation amounts look light but 1 to 3 inches of
snow across elevations higher than 8000 feet looks possible.

There should be an increase in shower activity as the low moves
closer and through the region Friday and Friday night.

.Extended discussion (Saturday through Tuesday)
a low pressure system will continue to move east through the area
during the morning hours on Saturday and into nevada by late
Saturday. Colder air associated with the low may bring some snow
down around pass levels. However, since showers are expected to
be scattered enough to not produce much precipitation, we are not
expecting much snow at or below pass levels at this time. Precipitation
should be winding down by Saturday night as the low moves further
to the east, though could see some lingering mountain showers
through very early Sunday. Behind the system northerly winds will
develop Sunday into Monday. Ridging begins to build early next
week, causing temperatures to rise significantly beginning Sunday.

Most valley locations could see temperatures in the 90s by Monday.

Aviation
Showers and thunderstorms have formed over the mountains, will
continue through the evening. Local MVFR ifr conditions possible
in storms. Otherwise, mainlyVFR conditions over interior norcal
next 24 hours except small chance of stratus near sacramento taf
sites after 10z Wednesday. Winds up to 15 kts in the valley with
gusts up to 35kts in delta. Hec

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 mi64 min WNW 12 56°F 1011 hPa52°F
ANVC1 - 9416841 - Arena Cove, CA 59 mi49 min S 1.9 G 1.9 52°F 49°F1012.7 hPa (-0.3)
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 59 mi39 min WNW 9.7 G 12 54°F 1012.7 hPa53°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, CA29 mi56 minSE 39.00 miOvercast54°F51°F90%1010.8 hPa

Wind History from STS (wind in knots)
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Last 24hrS3CalmCalmS3SW4S3336S6S9S8S9SE11SE11SE11SE11SE9SE6SE7S3SE3SE4SE3
1 day agoCalmCalmCalmCalmSW3Calm45S75
G14
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G18
SE12SE9SE7S7S5S4S3S3CalmCalm
2 days agoSW4SE3CalmS3S33Calm3SE5S7S8SE9
G16
SW8S8SE6N7N14
G19
NW75S5S3CalmCalmCalm

Tide / Current Tables for Fort Ross, California
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Fort Ross
Click for Map
Wed -- 01:02 AM PDT     1.76 feet Low Tide
Wed -- 02:54 AM PDT     Moonset
Wed -- 05:55 AM PDT     Sunrise
Wed -- 06:21 AM PDT     4.32 feet High Tide
Wed -- 12:54 PM PDT     0.17 feet Low Tide
Wed -- 02:37 PM PDT     Moonrise
Wed -- 07:44 PM PDT     5.38 feet High Tide
Wed -- 08:24 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
21.822.53.23.94.34.23.72.91.910.40.20.51.22.33.44.55.25.454.13.1

Tide / Current Tables for Napa, Napa River, Carquinez Strait, California
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Napa
Click for Map
Wed -- 02:50 AM PDT     Moonset
Wed -- 04:24 AM PDT     1.83 feet Low Tide
Wed -- 05:51 AM PDT     Sunrise
Wed -- 09:28 AM PDT     5.90 feet High Tide
Wed -- 02:33 PM PDT     Moonrise
Wed -- 04:16 PM PDT     0.18 feet Low Tide
Wed -- 08:20 PM PDT     Sunset
Wed -- 10:51 PM PDT     7.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.64.43.22.31.922.73.955.85.85.34.22.91.60.70.20.41.22.54.15.66.77

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 (6,6,7,8)
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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.