Thursday, January17, 2019 L-36.com


Marine Weather and Tides
Plymouth, 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 7:18AMSunset 5:10PM Thursday January 17, 2019 10:03 AM PST (18:03 UTC) Moonrise 1:59PMMoonset 3:33AM Illumination 88% Phase: Waxing Gibbous; Moon at 12 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 The San Francisco Bay North Of The Bay Bridge- 852 Am Pst Thu Jan 17 2019
Today..SW winds 15 to 20 kt...becoming 10 to 20 kt this afternoon. Gusts up to 25 kt. Showers and a slight chance of Thunderstorms.
Tonight..SW winds 5 to 15 kt. A slight chance of showers.
Fri..SE winds 5 to 10 kt. A slight chance of showers.
Fri night..S winds 5 to 10 kt. A slight chance of showers.
Sat..S winds up to 10 kt. A slight chance of showers.
Sat night..SW winds 5 to 10 kt. A chance of showers.
Sun..W winds 5 to 15 kt. Showers likely.
Martin luther king jr day..NW winds 5 to 10 kt. Winds and wind waves higher in and near Thunderstorms.
PZZ500 852 Am Pst Thu Jan 17 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds will continue to gradually diminish through the day. However, the sea state will be hazardous with a very large and long period west swell. This swell will build through the day and persist into Friday. This incoming swell will prolong the hazardous sea conditions throughout the waters, particularly for small vessels.


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 171236
afdsto
area forecast discussion
national weather service sacramento ca
436 am pst Thu jan 17 2019

Synopsis
Showers, thunderstorms, heavy mountain snow and breezy conditions
today. Precipitation chances continue through the weekend, then a
pattern change to dry weather is expected for next week.

Discussion
Post-frontal airmass has settled across interior norcal with radar
indicating the bulk of shower activity now mainly over the
mountains. Upslope flow and strong mid-level flow pushing around
the base of the offshore trough is organizing the precipitation
into lines of moderate to heavy showers over the west slopes of
the northern sierra. Surface pressure gradients have relaxed
considerably compared to last evening, but enough gradient remains
for breezy to windy conditions (20-30 mph in the sacramento valley
and 40-60 mph in the sierra).

Runoff from yesterday's and last evening's heavy precipitation
will continue to result in some local flooding of creeks and small
rivers this morning, especially along the edge of the central
valley and into the foothills.

Scattered showers and thunderstorms today as the upper trough
lifts across the region. Higher resolution models indicate
potential for several lines of showers and thunderstorms to move
through the sacramento region today beginning around late-morning
and continuing into early this evening. Flash flood watch
continues for the recent burn scars for potential issues with high
rainfall rates associated with thunderstorms.

Heavy snow will continue across the northern sierra for about
another 24 hours with lowering snow levels. Snow levels will
lower to around 5000 feet this morning and to 4000 feet tonight.

12-18 inches of accumulation is forecast around blu with an
additional 2-3 feet across the northern sierra passes.

A brief period of improving conditions are anticipated thereafter
as a transient upper ridge moves through. By Saturday morning, a
shortwave moving through the pacific northwest will lead to some
increasing precipitation chances along the trailing cold front.

This is primarily a concern north of i-80 although amounts will
be nothing like this current storm. An additional precipitation
chance lurks in the wake to conclude the weekend.

.Extended discussion (Monday through Thursday)
precipitation ends early Monday morning with upper level ridging
rapidly building in bringing dry weather and northerly winds. Dry
weather with above normal temperatures are expected through next
week. High temperatures in the valley warm up to the lower 60s
with high temperatures in the mountain and foothills in the 40s.

Aviation
Isolated showers this morning in the valley becoming scattered in
the afternoon with local MVFR conditions possible. Isolated tsra
are possible after 17z in the valley. Southerly wind gusts up to
25-30 knots today.

Sto watches warnings advisories
Winter storm warning from noon today to 4 am pst Friday for west
slope northern sierra nevada-western plumas county lassen park.

Blizzard warning until noon pst today for west slope northern
sierra nevada-western plumas county lassen park.

Flash flood watch until 4 pm pst this afternoon for clear
lake southern lake county-mountains southwestern shasta county
to northern lake county-northeast foothills sacramento valley-
shasta lake area northern shasta county.

Wind advisory until noon pst today for central sacramento valley-
northeast foothills sacramento valley-northern sacramento valley-
southern sacramento valley.



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 mi78 min SSW 8 51°F 1014 hPa48°F
PCOC1 - 9415144 - Port Chicago, CA 70 mi33 min S 8.9 G 12 53°F 51°F1015.5 hPa
AAMC1 - 9414750 - Alameda, CA 92 mi39 min WSW 13 G 17 53°F 53°F1016.4 hPa

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
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
Last
24hr
E7
E8
G13
E8
E5
G8
SE1
SE8
G11
S7
G12
SE10
G14
S16
G21
S15
G24
S11
G17
S11
G20
S11
G17
SW12
G22
SW11
G16
SW7
G12
SW8
G12
SW9
G13
SW9
G13
SW6
G11
S9
G14
W7
SW15
S7
1 day
ago
E11
G16
E15
E15
G20
E16
G21
E16
G20
E12
G16
E14
G20
E11
G14
E9
G12
E5
G8
SE3
SW5
S6
G13
S6
S4
S4
G7
E4
E5
E7
E6
S7
G12
SE5
SW1
E5
2 days
ago
E12
G15
E11
G14
E10
G14
E11
G15
E7
G10
E9
G13
E12
G16
E14
E7
E10
E8
E11
G14
E7
G10
SE4
E7
G10
E4
SE3
G6
NE9
E8
E7
G11
NE6
E7
E6
G10
E11
G14

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Sacramento Mather Airport, CA25 mi68 minSSW 11 G 177.00 miLight Rain Fog/Mist52°F50°F94%1014.9 hPa

Wind History from MHR (wind in knots)
11
AM
12
PM
1
PM
2
PM
3
PM
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
Last 24hrSE18
G27
SE18
G27
S8
G18
S15
G20
S12SE17
G24
SE24
G31
SE24
G35
SE26
G33
SE27
G37
S20
G29
SE15
G27
SE27
G33
S22
G31
------S12S12SE10S9SE11SW11
G17
S12
1 day agoE5E7E7E8--NE5NE8SE8E14
G22
SE24
G34
S24
G36
S18
G29
S15
G21
S15
G20
--------S11--SE17
G25
SE16
G25
SE19
G27
SE14
G27
2 days agoCalmN5N4Calm--SE14
G21
SE11SE3E6E5E9E5NE4------SE4SE5E4E3SE5SE10SE6SE8

Tide / Current Tables for Clarksburg, Sacramento River, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Clarksburg #4, Sacramento River, California
   EDIT      (on/off)   Help   One Week of Data
Clarksburg #4
Click for Map
Thu -- 03:15 AM PST     2.08 feet High Tide
Thu -- 03:35 AM PST     Moonset
Thu -- 07:21 AM PST     Sunrise
Thu -- 08:55 AM PST     0.76 feet Low Tide
Thu -- 01:58 PM PST     3.21 feet High Tide
Thu -- 02:01 PM PST     Moonrise
Thu -- 05:11 PM PST     Sunset
Thu -- 11:06 PM PST     0.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.71.31.82.121.81.410.80.811.52.433.23.12.82.41.81.30.80.40.10

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (13,3,4,5)
      (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.