Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Pittsburg, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:04AMSunset 7:23PM Wednesday March 22, 2017 11:19 PM PDT (06:19 UTC) Moonrise 2:39AMMoonset 1:01PM Illumination 20% Phase: Waning Crescent; Moon at 25 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- 847 Pm Pdt Wed Mar 22 2017
Tonight..W winds 10 to 20 kt.
Thu..W winds 5 to 15 kt.
Thu night..S winds 10 to 20 kt. Slight chance of rain in the evening, then chance of rain after midnight.
Fri..S winds 15 to 25 kt. Rain.
Fri night..SW winds 5 to 15 kt. Rain likely in the evening, then chance of showers after midnight.
Sat..W winds 5 to 15 kt.
Sun..SW winds 10 kt. Chance of showers.
Mon..W winds 10 kt...increasing to 10 to 20 kt. Chance of showers.
PZZ500 847 Pm Pdt Wed Mar 22 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure off the southern california coast will weaken tonight resulting in decreasing northwest winds. The winds will become southerly and increase on Thursday a ahead of the next system. Winds will increase during the day Thursday. Winds will switch to the northwest Friday but another system may impact the waters on Sunday.

7 Day Forecast for Marine Location Near Pittsburg, CA
   Hourly   EDIT   Help
location: 38.05, -121.87     debug


Area Discussion for - Sacramento, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 ksto 230421
afdsto
area forecast discussion
national weather service sacramento ca
921 pm pdt Wed mar 22 2017

Synopsis
Unsettled weather will continue into next week as a series of
weather systems move through the region.

Discussion
Upper low pressure system is still over the area with scattered
showers over the foothills and mountains with some lingering
isolated showers in the valley. The center of upper low will move
to near las vegas overnight and as it does the showers will
rapidly diminish between 10 pm and 1 am tonight.

Snow level is near 4500 feet and with the showers expected to
rapidly diminish the timing looks good to let the winter weather
advisory expire at 10 pm. Only minor accumulations are expected
before the showers end.

Thursday will be dry during the day. The GFS is slightly faster
than the NAM in bringing in precipitation Thursday night. Snow
levels will start out lower with this system (near 6000 ft) so
expected some travel problems going over the crest starting
Friday morning.

Previous discussion
Upper trough is positioned over california this afternoon with
disturbance dropping south through it across norcal. Morning's
precip band has shifted east and weakened over the sierra... But
not before producing a 4 to 6 hour burst of heavy snow. Afternoon
and evenings concerns shift to thunderstorm development with hail
being the main concern due to cold air aloft/steep lapse rates.

Shear is less than yesterday... But stronger than 12z model
forecast as southeast low winds of 10-20 mph continue red bluff
to sacramento. Activity will shift over sierra late this
afternoon/evening with another burst of heavy snow possible. Snow
levels will drop to 4000 feet at times in heavier activity.

Brief break between storms during the day Thursday before the next
system moves in during the night into Saturday. Valley rainfall
amounts will range from 1-2 inches redding area to 0.25-0.50
stockton/modesto. Mountain precip amounts will be 1-2 inches
liquid. Snowfall amounts 6-12 inches could fall with rather low
snow levels down to 4500 feet.

.Extended discussion (Sunday through Wednesday)
next in a series of pacific frontal systems pushes into norcal
on Sunday. All areas of the CWA should see at least a chance
of precipitation by afternoon. Precipitation amounts with this
week system are expected to be fairly light so even with moderate
snow levels, impacts are expected to be minimal. Models diverge
as to how fast this system will exit the region. ECMWF and gem
models quickly shift the upper trough axis eastward into the
great basin by Monday while the slower GFS keeps cyclonic flow
and shower threat over the forecast area Monday. Models diverge
even more Tuesday and Wednesday. Have kept slight threat of
precipitation over the northern mountains Tuesday with ecmwf
and gem showing some sort of trough over pacific northwest but
gfs puts a fairly strong ridge over norcal Tuesday so confidence
in the forecast for this time period is low. Models seem to be
settling in on idea of west coast ridging around the middle of
next week for at least a brief drying period but considering poor
model consistency, confidence remains low.

Aviation
Vfr ceilings central valley and MVFR/ifr over mountains as upper
level trough moves through norcal today. Snow level near 4500
feet. Improving conditions after 09z.

Sto watches/warnings/advisories
Winter weather advisory until 10 pm pdt this evening for west
slope northern sierra nevada-western plumas county/lassen park.



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
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 1 mi49 min WNW 8.9 G 12 52°F 1019.1 hPa
PCOC1 - 9415144 - Port Chicago, CA 9 mi49 min W 15 G 19 53°F 58°F1019.2 hPa
SFXC1 - San Francisco Bay Reserve, CA 13 mi94 min WNW 7 49°F 1019 hPa45°F
UPBC1 13 mi49 min WNW 11 G 17
MZXC1 - 9415102 - Martinez-Amorco CA 14 mi49 min W 13 G 17 53°F 58°F1019.7 hPa49°F
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 21 mi49 min W 5.1 G 8.9 53°F 1019.5 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 28 mi49 min WNW 15 G 21 54°F 1019.7 hPa
LNDC1 28 mi49 min NW 7 G 12 53°F 1019.8 hPa
RCMC1 - 9414863 - Richmond, CA 30 mi49 min NW 12 G 17 53°F 57°F1019.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 30 mi49 min WNW 13 G 15
AAMC1 - 9414750 - Alameda, CA 30 mi49 min W 8 G 11 53°F 60°F1020.2 hPa
OBXC1 30 mi49 min 53°F 44°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 30 mi49 min WNW 11 G 14 53°F 1019.9 hPa
PXSC1 33 mi49 min 53°F 43°F
FTPC1 - 9414290 - San Francisco, CA 36 mi49 min WNW 8.9 G 13 52°F 57°F1020.4 hPa
RTYC1 - 9414523 - Redwood City, CA 42 mi49 min W 9.9 G 12 53°F 59°F1019.8 hPa
46237 - San Francisco Bar, CA (142) 44 mi49 min 55°F9 ft

Wind History for Port Chicago, CA
(wind in knots)    EDIT      (on/off)   Help
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
Last
24hr
S4
G7
W2
S3
S5
G9
S11
G14
S8
G11
S5
G8
W6
G9
W11
SW6
G9
W10
G15
W11
W13
G16
W14
W13
W14
G17
W17
G22
W17
W18
W17
G21
W16
G20
W14
G18
W16
W14
G17
1 day
ago
E7
E6
NE3
SE3
SE2
S4
G8
S3
G6
S10
G13
S4
G8
S5
G8
SW14
G17
SW15
SW13
G19
SW15
G19
SW16
G20
W17
G21
SW17
SW12
G18
SW5
G11
SW5
G9
S7
G11
S7
G11
S5
G8
SE4
2 days
ago
W10
SW8
G11
SW7
G10
E2
SE5
SE9
S8
G11
SW4
G11
S6
S5
G8
NE7
E9
E5
E7
NE5
SE2
S1
G4
E2
E7
G10

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Concord, Buchanan Field, CA11 mi26 minSW 510.00 miA Few Clouds51°F44°F77%1018.5 hPa
Fairfield / Travis Air Force Base, CA16 mi21 minWSW 710.00 miFair46°F44°F95%1019.3 hPa
Vacaville Nut Tree Airport, CA23 mi26 minN 010.00 miFair47°F44°F90%1019.3 hPa
Napa, Napa County Airport, CA24 mi25 minWNW 810.00 miFair50°F43°F77%1018.7 hPa
Livermore, Livermore Municipal Airport, CA24 mi26 minWSW 610.00 miA Few Clouds48°F39°F74%1019.6 hPa

Wind History from CCR (wind in knots)
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
Last 24hrS5S7S9S11S8S9S63S4W7W7W7W13W10W6W11W11
G18
W14W14W14W11SW6SW5SW5
1 day agoCalmCalmNW3CalmS7S7S4S11S7S7W10SW10SW12
G19
W16SW11SW13SW11SW13
G19
SW11SW14
G22
SW10SW10S7S6
2 days agoCalmNW4SW3W5W7S3CalmS7S8S9S10S9S9S9S5E3SE4S5SE6CalmNW4--NW3Calm

Tide / Current Tables for Pittsburg, New York Slough, Suisun Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Pittsburg
Click for Map
Thu -- 01:13 AM PDT     3.32 feet High Tide
Thu -- 04:23 AM PDT     Moonrise
Thu -- 06:34 AM PDT     1.60 feet Low Tide
Thu -- 07:05 AM PDT     Sunrise
Thu -- 12:01 PM PDT     3.61 feet High Tide
Thu -- 02:58 PM PDT     Moonset
Thu -- 07:22 PM PDT     Sunset
Thu -- 07:39 PM PDT     0.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
33.33.22.82.31.91.61.61.92.53.13.53.63.53.12.41.71.10.60.30.20.61.22

Tide / Current Tables for Chain Island .7 mi SW, Sacramento River, California Current
   EDIT      (on/off)   Help   One Week of Data
Chain Island .7 mi SW
Click for Map
Thu -- 12:14 AM PDT     1.20 knots Max Flood
Thu -- 03:20 AM PDT     -0.00 knots Slack
Thu -- 04:23 AM PDT     Moonrise
Thu -- 05:53 AM PDT     -0.87 knots Max Ebb
Thu -- 07:05 AM PDT     Sunrise
Thu -- 08:13 AM PDT     0.00 knots Slack
Thu -- 10:57 AM PDT     1.05 knots Max Flood
Thu -- 02:06 PM PDT     -0.00 knots Slack
Thu -- 02:58 PM PDT     Moonset
Thu -- 05:40 PM PDT     -1.56 knots Max Ebb
Thu -- 07:22 PM PDT     Sunset
Thu -- 09:22 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.21.10.70.2-0.4-0.8-0.9-0.7-0.10.50.910.90.60.1-0.7-1.2-1.5-1.6-1.4-0.9-0.30.40.9

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 (2,6,7,8)
      (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.