Wednesday, October17, 2018 L-36.com


Marine Weather and Tides
Alameda, 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 7:19AMSunset 6:29PM Wednesday October 17, 2018 2:57 AM PDT (09:57 UTC) Moonrise 2:04PMMoonset 12:00AM Illumination 54% Phase: First Quarter Moon; 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
    EDIT      (on/off)   Help
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 218 Am Pdt Wed Oct 17 2018
Today..E winds up to 10 kt...becoming sw this afternoon.
Tonight..SW winds 5 to 10 kt.
Thu..W winds up to 10 kt.
Thu night..SW winds 5 to 10 kt.
Fri..W winds up to 10 kt.
Fri night..SW winds 5 to 10 kt.
Sat..NW winds up to 10 kt.
Sun..W winds up to 10 kt.
PZZ500 218 Am Pdt Wed Oct 17 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Predominately light northwest winds through the the forecast period. Locall breezy northwest winds will develop through the usual coastal jets near the coast. A long period northwest swell will arrive on Wednesday bringing an increased risk of rip currents and sneaker waves. SWell period will decrease Wednesday night and Thursday.


7 Day Forecast for Marine Location Near Alameda city, CA
   Hourly   EDIT   Help
location: 37.78, -122.28     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 170950
afdmtr
area forecast discussion
national weather service san francisco bay area
250 am pdt Wed oct 17 2018

Synopsis Daytime will remain seasonably warm with patchy
coastal clouds at night will continue the rest of the week and
into the weekend. The forecast remains dry through the middle of
next week. Cooler weather returns next week.

Discussion As of 02:50 am pdt Wednesday... Offshore flow
continues to weaken (sfo-wmc gradient down another 4mb) as
onshore flow increase. Overnight GOES east satellite fog product
shows a summer type set up with coastal low clouds pushing locally
inland. Automated stations puts cloud heights at only a few
hundred feet with patchy dense fog. Therefore, added some patchy
dense fog around monterey bay, san mateo coast and santa rosa
vicinity. Expect clearing back to the coast by mid-morning with
sunny skies this afternoon. Similar to yesterday morning, it will
be chilly with a few interior pockets dipping into the upper 30s.

The longwave pattern aloft will gradually evolve over the next few
days and moreso next week. Currently the upper low over northern
arizona will continue to drift to the NE as ridging builds across
the pac nw. By Friday, high pressure aloft becomes established
over or as low pressure develops over socal as a weak rex block
into the weekend. So what does this mean for the bay area? Mild
daytime temperatures with cool overnight temperatures. Night and
morning low clouds will be possible along the coast and locally
inland. Conf is low on extent of clouds as some weak offshore flow
remains. Above the cloud deck, dry conditions will remain over the
hills keeping fire weather concerns heightened.

The 00z model suite continues to advertise another pattern shift
next week. The blocking pattern is short lived as an upper level
trough moves into the west coast. Confidence on precip chances
continues to remain low, but one thing that is more certain is
widespread cooling. Current forecast will bring temperatures down
by Monday with increasing clouds and a low chance for precip
across the north bay.

Aviation As of 10:00 pm pdt Tuesday... Satellite image shows
areas of stratus over the waters. Stratus is filling mry bay and
should spread into mry and sns. Latest NAM guidance shows cigs
into sfo and oak early morning so have added that into the tafs.

Vicinity of ksfo... Occasional MVFR CIGS between 12z and 16z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr CIGS after 07z clearing after 17z.

Marine As of 09:33 pm pdt Tuesday... High pressure over the
eastern pacific coupled with a thermal trough along the coast will
maintain light northwest winds through Sunday. A long period
northwest swell will arrive on Wednesday bringing an increased
risk of rip currents and sneaker waves. Swell period will decrease
Wednesday night and Thursday.

Mtr watches warnings advisories
Tday None.

Public forecast: mm
aviation: W pi
marine: W pi
visit us at

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
LNDC1 1 mi39 min W 2.9 G 5.1 56°F 1018.1 hPa
AAMC1 - 9414750 - Alameda, CA 1 mi45 min W 5.1 G 6 56°F 65°F1018.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 3 mi39 min SW 4.1 G 7
OBXC1 4 mi39 min 56°F 55°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 4 mi39 min WSW 1 G 4.1 56°F 1018.1 hPa
PXSC1 6 mi45 min 57°F 54°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 6 mi39 min WSW 7 G 11 55°F 1017.1 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 10 mi39 min S 9.9 G 12 57°F 1018.3 hPa
FTPC1 - 9414290 - San Francisco, CA 10 mi45 min SW 2.9 G 9.9 56°F 61°F1018.3 hPa
RCMC1 - 9414863 - Richmond, CA 12 mi39 min 63°F
TIBC1 - Tiburon Pier, San Francisco Bay, CA 12 mi46 min SW 2.9 54°F 1018 hPa
46237 - San Francisco Bar, CA (142) 19 mi57 min 59°F3 ft
MZXC1 - 9415102 - Martinez-Amorco CA 19 mi39 min WNW 11 G 13 64°F1017.5 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 19 mi39 min WSW 7 G 9.9 57°F 1017.6 hPa
RTYC1 - 9414523 - Redwood City, CA 19 mi39 min WSW 1 G 1.9 55°F 67°F1018.5 hPa
PCOC1 - 9415144 - Port Chicago, CA 23 mi39 min W 12 G 14 58°F 64°F1017.4 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 28 mi39 min WNW 8.9 G 13 60°F 1016.8 hPa
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 30 mi37 min NW 7.8 G 12 56°F 58°F1018.7 hPa
SFXC1 - San Francisco Bay Reserve, CA 32 mi72 min W 2.9 55°F 1017 hPa
PRYC1 - 9415020 - Point Reyes, CA 40 mi39 min WNW 6 G 7 59°F1017.8 hPa

Wind History for Alameda, CA
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
Last
24hr
E3
E2
E2
E3
E2
E2
E1
S2
SW4
SE3
SW2
W4
W4
W10
G13
W10
W7
G10
W8
W9
W7
W4
W4
W7
G10
W4
W4
1 day
ago
SE2
G8
N8
G16
SE2
G8
SE1
G7
E2
E5
G8
E3
G6
SE4
G8
S5
G8
SW5
SW4
SW4
SW4
W4
W7
W7
NW3
N3
NW3
NW1
--
NE1
E4
E3
2 days
ago
W2
G6
S3
SW2
S2
G5
SE1
SE1
SW4
W3
N4
G9
NW3
W8
W8
W8
W6
G9
W6
G9
NW3
N3
N4
G8
N8
G11
E4
NE1
G4
NE4
G13

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oakland, Metro Oakland International Airport, CA6 mi64 minWNW 710.00 miA Few Clouds55°F52°F90%1018.1 hPa
Hayward, Hayward Air Terminal, CA12 mi63 minN 010.00 miFair53°F44°F72%1018.8 hPa
San Francisco, San Francisco International Airport, CA12 mi61 minW 910.00 miA Few Clouds52°F50°F93%1017.7 hPa
San Carlos Airport, CA17 mi62 minN 010.00 miFair54°F46°F77%1017.9 hPa
Concord, Buchanan Field, CA18 mi64 minESE 310.00 miFair54°F46°F77%1016 hPa

Wind History from OAK (wind in knots)
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
12
AM
1
AM
2
AM
Last 24hrE4E4E3E3CalmNE3CalmSE4S5SW3SW3W4NW8W11W12NW9NW8NW5NW4--N3CalmNW4NW7
1 day agoN10CalmE8
G17
E6E6SE8SE9E7E15S10S9SW6W8W7W12NW8NW4NW3NW4NW5CalmCalmE4E6
2 days agoNW5N4N4N3CalmCalmCalmS6SW3W8W6NW7NW10W8NW9W10W8NW5NW4W44N9NE11NE13
G18

Tide / Current Tables for Oakland Inner Harbor, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Oakland Inner Harbor
Click for Map
Wed -- 12:28 AM PDT     Moonset
Wed -- 01:16 AM PDT     0.71 feet Low Tide
Wed -- 07:19 AM PDT     Sunrise
Wed -- 08:55 AM PDT     5.13 feet High Tide
Wed -- 02:09 PM PDT     2.97 feet Low Tide
Wed -- 03:04 PM PDT     Moonrise
Wed -- 06:28 PM PDT     Sunset
Wed -- 07:20 PM PDT     5.19 feet High 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
10.70.81.322.93.74.555.14.94.43.73.233.13.64.24.85.25.14.63.82.8

Tide / Current Tables for Oakland Inner Harbor Reach, 33 ft. below datum Current
   EDIT      (on/off)   Help   One Week of Data
Oakland Inner Harbor Reach
Click for MapFlood direction 82 true
Ebb direction 255 true

Wed -- 12:19 AM PDT     0.01 knots Slack
Wed -- 12:28 AM PDT     Moonset
Wed -- 05:26 AM PDT     0.26 knots Max Flood
Wed -- 07:19 AM PDT     Sunrise
Wed -- 08:10 AM PDT     -0.00 knots Slack
Wed -- 09:57 AM PDT     -0.15 knots Max Ebb
Wed -- 12:49 PM PDT     0.00 knots Slack
Wed -- 03:04 PM PDT     Moonrise
Wed -- 05:10 PM PDT     0.14 knots Max Flood
Wed -- 06:28 PM PDT     Sunset
Wed -- 07:23 PM PDT     -0.00 knots Slack
Wed -- 10:00 PM PDT     -0.30 knots Max Ebb
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
-0.10.10.10.20.20.30.20.20-0.1-0.2-0.1-0.100.10.10.10.10.10.1-0.1-0.2-0.3-0.3

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 San Francisco/Monterey Bay Area, CA (5,6,7,8)
      (on/off)   Help

Ground Weather Radar Station San Francisco Bay Area, 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.