Wednesday, May27, 2020
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Marine Weather and Tides
Lakeport, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:48AMSunset 8:31PM Wednesday May 27, 2020 5:34 AM PDT (12:34 UTC) Moonrise 9:11AMMoonset 12:00AM Illumination 28% Phase: Waxing Crescent; Moon at 5 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- 306 Am Pdt Wed May 27 2020
.small craft advisory in effect through late tonight...
Today..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft, increasing to 5 to 6 ft this afternoon. NW swell 5 to 7 ft at 10 seconds and sw around 2 ft at 18 seconds.
Tonight..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 4 ft. NW swell 4 to 6 ft at 11 seconds and sw around 2 ft at 17 seconds.
Thu..NW winds 10 to 20 kt. Wind waves 1 to 2 ft. NW swell 5 to 6 ft at 10 seconds and sw around 2 ft at 16 seconds.
Thu night..W winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 5 to 7 ft at 9 seconds and sw around 2 ft at 19 seconds.
Fri..SE winds 10 to 15 kt. Wind waves 2 to 3 ft. W swell 3 to 5 ft at 9 seconds and sw around 2 ft at 19 seconds.
Fri night..SE winds 10 to 15 kt. Wind waves 1 to 2 ft. NW swell 6 to 8 ft at 14 seconds and sw around 2 ft at 19 seconds. A chance of showers.
Sat..S winds up to 10 kt. Wind waves 1 ft. NW swell 5 to 7 ft and sw around 2 ft. A chance of showers.
Sun..NW winds 5 to 15 kt. Wind waves 1 ft. Mixed swell nw 3 to 5 ft and sw 2 to 3 ft.
PZZ500 306 Am Pdt Wed May 27 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Breezy northwest winds will persist over the northern waters through today. These winds will generate steep fresh swell resulting in hazardous seas conditions for small crafts. Generally light to moderate northwest winds are expected elsewhere with winds generally easing across the waters late this week as an upper ridge sits over california and an upper low slowly approaches from the southwest. Mixed seas will continue with a short period northwest swell and a longer period southwest swell. A longer period northwest swell will arrive later this week.


7 Day Forecast for Marine Location Near Lakeport, CA
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location: 39.03, -123.02     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 270940 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 240 AM PDT Wed May 27 2020

Synopsis. High pressure will continue hot weather with moderate to high heat risk through Thursday. A pattern change begins Friday which will lead to cooler temperatures and chances of showers and thunderstorms over the weekend.

DISCUSSION. Clear skies and generally light winds continue across the region early this morning. Current temperatures are very mild and are several degrees warmer across most of the region compared to 24 hours ago. Readings range from the mid 40s in the mountain valleys to the upper 60s to around 80 across the Central Valley.

Hot temperatures will continue today and Thursday as strong high pressure remains over NorCal. We will see a gradual return of stronger onshore flow later today and Thursday which may begin to cool the Delta a few degrees.

With the prolonged heat in the forecast, the general population should take precautions to prevent heat related illnesses given the potential for moderate to very high heat risk. Stay hydrated, limit outdoor activities, and check on sensitive groups. If you plan on enjoying the outdoors, be sure to practice heat safety and a cold water safety if visiting area waterways. Area waterways continue to run very cold and fast, and precautions should be taken if heading to the water.

A cutoff low continuing to spin well off the coast of SoCal and Baja will bring changes to our weather on Friday as it pushes toward NorCal. We will see the start of a cooling trend with valley highs falling back into the 90s. The forcing will be on the weak side for Friday but we do see some instability build in generally above 500 mb. This will bring a slight chance for t-storms in the higher elevations during the afternoon and evening.

Better shower and thunderstorm chances develop Saturday, especially to the north of Sacramento as moisture and vertical motion increase ahead of the low as it lifts northward. Temperatures will cool significantly on Saturday due to the increase in clouds and showers, stronger onshore flow and major synoptic cooling.

EXTENDED DISCUSSION (Sunday THROUGH Wednesday). Long wave trough sets up off the West Coast Sunday with a series of embedded waves moving through interior NorCal. This will keep unsettled weather through the extended forecast period. Best chances for showers will be over the foothills and mountains. High temperatures will be near to slightly below normal through Tuesday, warming to slightly above normal Wednesday.

AVIATION. VFR conditions over Interior NorCal the next 24 hours with surface winds generally below 12 knots.

STO WATCHES/WARNINGS/ADVISORIES. Excessive Heat Warning until 7 PM PDT Thursday for Carquinez Strait and Delta-Central Sacramento Valley-Motherlode-Mountains Southwestern Shasta County to Western Colusa County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Southern Sacramento Valley.

Excessive Heat Warning until 7 PM PDT Thursday for Northern San Joaquin Valley.

Excessive Heat Warning from 7 AM to 7 PM PDT Thursday for Shasta Lake Area / Northern Shasta County.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 37 mi46 min W 1.9 G 6 52°F 49°F1013 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 52 mi24 min NW 18 G 21 51°F1012.9 hPa

Wind History for Arena Cove, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA12 mi38 minN 010.00 miFair60°F55°F84%1011.8 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmN3NW333CalmNW10NW10N10
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1 day agoCalmCalmCalmCalmCalmN4NE436NW5W7W7W6NE6Calm3S3CalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmSE3NE3Calm33E33CalmNW8W10
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Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
Click for Map
Wed -- 12:25 AM PDT     Moonset
Wed -- 01:54 AM PDT     5.45 feet High Tide
Wed -- 05:53 AM PDT     Sunrise
Wed -- 09:20 AM PDT     -0.84 feet Low Tide
Wed -- 10:13 AM PDT     Moonrise
Wed -- 04:47 PM PDT     4.47 feet High Tide
Wed -- 08:31 PM PDT     Sunset
Wed -- 09:33 PM PDT     3.34 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.85.35.45.24.53.31.90.6-0.4-0.8-0.7-0.10.81.82.93.84.34.54.33.93.63.43.43.6

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Wed -- 12:22 AM PDT     Moonset
Wed -- 12:32 AM PDT     0.54 knots Max Flood
Wed -- 02:56 AM PDT     -0.00 knots Slack
Wed -- 05:52 AM PDT     Sunrise
Wed -- 06:49 AM PDT     -1.30 knots Max Ebb
Wed -- 10:13 AM PDT     Moonrise
Wed -- 10:38 AM PDT     0.00 knots Slack
Wed -- 01:48 PM PDT     0.95 knots Max Flood
Wed -- 05:33 PM PDT     -0.00 knots Slack
Wed -- 07:37 PM PDT     -0.54 knots Max Ebb
Wed -- 08:28 PM PDT     Sunset
Wed -- 10:37 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.50.3-0-0.4-0.8-1.2-1.3-1.1-0.7-0.30.20.60.910.80.60.2-0.2-0.5-0.5-0.3-0.10.1

Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (8,2,3,4)
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Ground Weather Radar Station Beal AFB, 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 numerous 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.