Sunday, May28, 2017 L-36.com


Marine Weather and Tides
Plymouth, CA

Version 3.4
What's New / NOTES
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 5:40AMSunset 8:22PM Sunday May 28, 2017 5:11 PM PDT (00:11 UTC) Moonrise 7:49AMMoonset 10:27PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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
    EDIT      (on/off)   Help
PZZ530 San Pablo Bay Suisun Bay The West Delta And San Francisco Bay North Of The Bay Bridge- 213 Pm Pdt Sun May 28 2017
.small craft advisory in effect through late tonight...
.small craft advisory in effect from Monday afternoon through late Monday night...
Tonight..SW winds 10 to 20 kt. Patchy fog after midnight.
Memorial day..SW winds 15 to 25 kt. Patchy fog in the morning.
Mon night..SW winds 15 to 25 kt. Patchy fog after midnight. Patchy drizzle after midnight.
Tue..SW winds 15 to 25 kt. Patchy fog in the morning. Patchy drizzle in the morning.
Tue night..W winds 15 to 25 kt. Slight chance of showers after midnight.
Wed..W winds 10 to 20 kt...becoming southwest 10 kt. Patchy fog.
Thu..SW winds 5 to 15 kt. Patchy fog.
Fri..SW winds 5 kt...increasing to 5 to 15 kt. Patchy fog.
PZZ500 213 Pm Pdt Sun May 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Brisk northerly winds will continue over the coastal waters as high pressure remains strong off the west coast. The gusty winds will produce hazardous conditions with steeper wind waves and fresh swell. Winds will decrease Tuesday night as a weak frontal system moves through the coastal waters.

7 Day Forecast for Marine Location Near Plymouth, CA
   Hourly   EDIT   Help
location: 38.48, -120.84     debug


Area Discussion for - Sacramento, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 ksto 282144
afdsto
area forecast discussion
national weather service sacramento ca
244 pm pdt Sun may 28 2017

Synopsis
Warming temperatures for the rest of the holiday weekend followed
by a cooldown Tuesday. Isolated afternoon showers or
thunderstorms possible over the mountains into mid-week.

Discussion
1 pm temperatures were about 4-8 degrees warmer than yesterday
across much of the valley as the ridging over norcal strengthens.

Daytime highs today should peak in the upper 80s to low 90s for
the valley while foothill and mountain regions range mid 60s to
mid 80s. Ridge will still be in place on Monday allowing for
another 1-2 degrees of warming to the daytime highs. Looking at
radar and out our office window, the cumulonimbus clouds are
developing this afternoon as we see another round of isolated
showers and thunderstorms over the sierra which we'll likely see
on Monday as well.

The ridge over norcal shifts eastward Monday night into Tuesday as
a trough approaches the west coast. This will start a cooling
trend in our temperatures as a cooler airmass aloft arrives and
onshore flow is enhanced. Tuesday temperatures will drop several
degrees putting the valley highs firmly in the 80s as the delta
breeze picks up with gusts 25-35 mph. Additional cooling on
Wednesday by a few degrees, but the delta breeze won't be as
strong. In addition to the cooling trend, instability over the
mountains looks much weaker on Tuesday and Wednesday. Have removed
mention of thunderstorms for those days. Shower activity will be
minimal on Tuesday... Mainly over the coastal range as the trough
moves inland. Overnight Tuesday into Wednesday, chance for showers
increases across norcal over to the sierra and including portions
of the valley with the trough's eastward track. Jbb
.Extended discussion (Thursday through Sunday)
dry weather now begins Thursday and will last through the weekend
as a trough axis shifts east. The 12z GFS & ECMWF model runs have
shifted the following shortwave farther north than yesterday's
runs, resulting in the precipitation chances shifting north of the
area as well. Temperatures begin increasing Thursday and will
continue to slowly increase through the weekend with delta highs
in the high 80s, valley highs reaching low to mid 90s, and
mountain highs mid 60s to 70s. The delta breeze will diminish
slightly by the weekend allowing the southern sacramento valley
highs to reach the low 90s.

Hec

Aviation
Vfr conditions expected next 24 hours. Winds generally 10 kts or
less for TAF sites with gusts to around 30 knots in vicinity of
the delta.

Sto watches warnings advisories
None.



Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 66 mi87 min W 12 74°F 1016 hPa60°F
PCOC1 - 9415144 - Port Chicago, CA 70 mi42 min W 16 G 18 70°F 66°F1015.4 hPa
AAMC1 - 9414750 - Alameda, CA 92 mi42 min SW 4.1 G 6 60°F 61°F1018 hPa

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
Last
24hr
W14
SW12
G16
W14
G19
W15
G19
W14
G18
SW15
SW11
G15
SW14
SW13
SW8
G11
SW7
SW7
G10
SW8
G11
SW8
G11
SW10
SW11
G14
W14
W16
W15
W14
W13
W16
W14
W14
G17
1 day
ago
W13
W13
G17
W12
G15
W12
G15
SW9
G13
SW6
SW6
SW10
G13
SW11
SW13
SW10
G13
W11
G14
SW9
SW8
G12
W11
SW8
G11
W13
W13
W15
W15
W16
W15
W14
W14
G17
2 days
ago
W18
G24
W20
W18
G23
SW16
G21
SW15
SW11
G15
SW14
G19
W14
G18
W15
G19
W12
G16
W12
G16
W12
G15
W12
G15
W10
G14
W11
G15
W12
W8
G11
W8
W8
W12
W11
G14
W12
G15
W14
W16

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento, Sacramento Mather Airport, CA25 mi2.4 hrsWNW 410.00 miClear84°F55°F37%1014.9 hPa

Wind History from MHR (wind in knots)
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
Last 24hrW8SW6S7SW7--SW8--------------S3SE4S3SW4SW4W3SW4NW4NW4W5W4
1 day agoS3CalmSW5SW7SW8SW8SW7SW7------SE5SE6SE6SE5SE5S5SW4SW6SW6SW7SW7SW6SW7
2 days agoSW8
G15
SW12
G16
W11SW11W11
G17
SW6S6S6S5------SE6--E3SE5S5SW7SW7S4SW7S8S8SW6

Tide / Current Tables for Clarksburg, Sacramento River, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Clarksburg
Click for MapNote: These data apply only during low river stages.

Sun -- 03:16 AM PDT     0.68 feet Low Tide
Sun -- 05:45 AM PDT     Sunrise
Sun -- 07:42 AM PDT     3.33 feet High Tide
Sun -- 08:52 AM PDT     Moonrise
Sun -- 04:38 PM PDT     -0.37 feet Low Tide
Sun -- 08:21 PM PDT     Sunset
Sun -- 10:04 PM PDT     2.52 feet High Tide
Sun -- 11:30 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.20.80.70.81.52.53.23.33.12.72.11.50.90.3-0.1-0.3-0.30.10.91.72.32.52.4

Tide / Current Tables for Clarksburg #4, Sacramento River, California
   EDIT      (on/off)   Help   One Week of Data
Clarksburg #4
Click for Map
Sun -- 03:16 AM PDT     0.67 feet Low Tide
Sun -- 05:45 AM PDT     Sunrise
Sun -- 07:42 AM PDT     3.33 feet High Tide
Sun -- 08:52 AM PDT     Moonrise
Sun -- 04:38 PM PDT     -0.38 feet Low Tide
Sun -- 08:21 PM PDT     Sunset
Sun -- 10:04 PM PDT     2.51 feet High Tide
Sun -- 11:30 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.20.80.70.81.52.43.23.33.12.72.11.50.90.3-0.1-0.3-0.30.10.91.72.32.52.4

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Sacramento, CA (20,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Sacramento, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.