Tuesday, April24, 2018 L-36.com


Marine Weather and Tides
Saratoga, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:18AMSunset 7:53PM Tuesday April 24, 2018 5:15 AM PDT (12:15 UTC) Moonrise 1:30PMMoonset 2:30AM Illumination 67% Phase: Waxing Gibbous; Moon at 9 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
PZZ560 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 214 Am Pdt Tue Apr 24 2018
Today..NW winds around 5 kt...becoming W 5 to 15 kt this afternoon. Wind waves 2 ft or less. W swell 3 to 5 ft at 18 seconds. Patchy fog this morning.
Tonight..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 16 seconds. Patchy fog.
Wed..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 15 seconds. Patchy fog.
Wed night..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 4 to 6 ft at 14 seconds.
Thu..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 ft or less. W swell 4 to 5 ft.
Thu night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 5 ft and S around 3 ft.
Fri..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 5 ft and S around 3 ft.
Sat..NW winds 5 to 15 kt. Wind waves 2 ft or less. Mixed swell nw 4 to 6 ft and S around 3 ft.
PZZ500 214 Am Pdt Tue Apr 24 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light onshore winds through the work week, with locally breezy to gusty winds near coastal gaps or prominent points such as the golden gate bridge and point sur. Light to moderate seas will prevail through the forecast period with a mixed southerly and northwesterly swell developing late this week.

7 Day Forecast for Marine Location Near Saratoga, CA
   Hourly   EDIT   Help
location: 37.29, -122.05     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 241149
afdmtr
area forecast discussion
national weather service san francisco bay area
449 am pdt Tue apr 24 2018

Synopsis A cooling trend is forecast from Tuesday through the
end of the week as an area of low pressure offshore slowly
approaches the coast. This low pressure may produce widely scattered
showers from late Friday into Saturday, mainly from the san
francisco bay north. Temperatures will be cool through the weekend
and early next week.

Discussion As of 3:00 am pdt Tuesday... An upper level trough
that moved inland north of the state on Sunday has brought onshore
flow to the area which has allowed low clouds to spread around the
bay this morning. Forecast high temperatures have been adjusted
lower around the bay area for today to account for the 1500 foot
marine layer and the onshore gradients. Wednesday should be a
continuation of today with more night and morning low clouds
around the bay.

An upper level low currently near 40 137 will drift slowly
eastward over the next few days. This will deepen the marine layer
even more Thursday and Friday resulting in a cooling trend for all
areas including the interior valleys. Models are indicating
stratus may spread into the north and east bay interior valleys
Thursday night and Friday morning. The marine layer will
eventually mix out but cooler air will continue to advect into the
area as the low gets closer to the coast. There is remarkably
good agreement with the gfs ECMWF and canadian models in bringing
the low into northern california Friday night and Saturday.

Showers will be limited due to lack of moisture so the main
effects will be the cool temperatures. The forecast mentions a
slight chance of showers from the bay area north Friday night and
Saturday. Highs Friday and Saturday only in the 60s in the bay
area and low 70s in the inland valleys.

As the low moves inland models indicate a secondary upper level
disturbance pinwheeling around the upper low and racing through
the area on Sunday. Again shower chances will be very minimal but
it will keep the cool temperatures going into Monday.

Temperatures will start to warm back up the middle of next week as
an upper level ridge builds along the west coast.

Aviation As of 4:45 am pdt Tuesday... Stratus deck W cigs
400-1200 ft this morning as thermal trof lingers inland tightening
the onshore gradient. Gradient will weaken into the sunrise hours
allowing for a gradual burn off from the edges by 16-18z depending
on location. Otherwise, light to locally breezy (near coastal
gaps) onshore winds today with passing high clouds at or around
20000 ft. Another round of stratus, possibly thicker lower,
anticipated to begin again overnight tonight.

Vicinity of ksfo... Borderline ifr MVFR thru 16z posbl with some
sct- bkn clouds impacting approach into the 17z hour. Breezy pm
w-nw wind with a few more gusts to 20 knots possible later today.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr lifr into sunrise hours with a few
areas of lingering stratus into the mid morning around the lip of
the monterey bay. Light onshore winds this afternoon and evening.

Stratus and fog are likely to roll back inland early Tuesday
evening.

Marine As of 04:42 am pdt Tuesday... Generally light onshore
winds through the work week, with locally breezy to gusty winds
near coastal gaps or prominent points such as the golden gate
bridge and point sur. Light to moderate seas will prevail through
the forecast period with a mixed southerly and northwesterly
swell developing late this week.

Mtr watches warnings advisories
Tday None.

Public forecast: W pi
aviation: drp
marine: drp
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
RTYC1 - 9414523 - Redwood City, CA 17 mi45 min NNW 2.9 G 4.1 55°F 66°F1015.9 hPa
AAMC1 - 9414750 - Alameda, CA 36 mi45 min WNW 4.1 G 6 53°F 63°F1015.8 hPa
ELXC1 - Elkhorn Slough Reserve, CA 37 mi90 min SE 2.9 50°F 1016 hPa49°F
LNDC1 37 mi45 min WSW 5.1 G 6 54°F 1015.6 hPa
46092 - MBM1 37 mi70 min NE 3.9 51°F 53°F1015.9 hPa (-1.2)
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 38 mi45 min WSW 4.1 G 5.1
46042 - MONTEREY - 27NM West of Monterey Bay, CA 39 mi85 min NNW 1.9 G 5.8 51°F 53°F5 ft1015.8 hPa (-1.1)
OKXC1 - 9414776 - Oakland (Berth 34), CA 39 mi45 min WNW 4.1 G 6 54°F 1015.7 hPa
OBXC1 39 mi45 min 54°F 52°F
PXSC1 40 mi45 min 54°F 52°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 40 mi45 min WSW 5.1 G 7 53°F 1014.6 hPa
46114 - West Monterey Bay, CA 42 mi45 min 54°F6 ft
FTPC1 - 9414290 - San Francisco, CA 42 mi45 min W 1 G 6 52°F 55°F1015.9 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi85 min W 1.9 G 3.9 53°F 56°F6 ft1015.4 hPa (-1.4)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 46 mi51 min SSW 4.1 G 6 54°F 1015.9 hPa
46237 - San Francisco Bar, CA (142) 46 mi45 min 54°F4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 47 mi52 min Calm 52°F 1016 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 47 mi54 min 56°F3 ft
RCMC1 - 9414863 - Richmond, CA 48 mi45 min SSW 4.1 G 6 53°F 58°F1015.4 hPa
MEYC1 48 mi45 min ENE 4.1 G 6 50°F 56°F1016 hPa

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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
3
AM
4
AM
Last
24hr
W2
S2
W2
W3
E2
N3
NE1
N2
N7
NW10
G13
NW11
G14
NW10
G13
NW12
G15
NW12
N8
G13
NW11
NW9
NW8
NW8
NW6
W4
NW4
N1
N1
1 day
ago
S1
N1
S1
--
NW4
N2
NE1
N1
N5
NW12
NW7
G10
NW10
NW11
NW8
W10
N9
N7
NW5
NW3
N3
NW4
W4
S1
W3
2 days
ago
SW2
SE1
S4
SE4
SE2
N4
NE3
NW5
N4
N4
N5
G8
NW11
NW11
NW12
NW9
N7
G10
N5
G8
N2
NW2
NW2
NW3
NW4
NW4
--

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose, San Jose International Airport, CA8 mi22 minE 310.00 miOvercast55°F51°F87%1015.3 hPa
Mountain View, Moffett Field, CA10 mi79 minN 09.00 miOvercast56°F52°F87%1016 hPa
San Carlos Airport, CA20 mi20 minSE 510.00 miOvercast55°F51°F88%1015.6 hPa

Wind History from SJC (wind in knots)
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
3
AM
4
AM
5
AM
Last 24hrCalmS3CalmCalmCalm3Calm4NW5NW9NW12NW13NW11W11W8W6W8W5NW6W3CalmSE4SE5E3
1 day agoW4SE6SE4NW3NW53CalmCalmNW9NW13W9NW12NW10NW11
G17
NW8NW4W4CalmNW4W4SW3CalmCalmCalm
2 days agoCalmCalmSE43CalmCalmNW3CalmNW5NW8W5NW13W12W11NW9W5SW4SW3NW6W4W3NW5NW4Calm

Tide / Current Tables for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Gold Street Bridge
Click for Map
Tue -- 03:30 AM PDT     Moonset
Tue -- 04:01 AM PDT     2.17 feet Low Tide
Tue -- 06:21 AM PDT     Sunrise
Tue -- 08:28 AM PDT     8.33 feet High Tide
Tue -- 02:29 PM PDT     Moonrise
Tue -- 04:19 PM PDT     -0.17 feet Low Tide
Tue -- 07:51 PM PDT     Sunset
Tue -- 10:16 PM PDT     8.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.14.73.42.52.22.94.66.78.18.27.66.44.83.11.50.4-0.10.11.43.45.67.68.78.5

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
   EDIT      (on/off)   Help   One Week of Data
Dumbarton Point 2.3 mi NE
Click for Map
Tue -- 01:29 AM PDT     -0.68 knots Max Ebb
Tue -- 03:31 AM PDT     Moonset
Tue -- 03:51 AM PDT     0.01 knots Slack
Tue -- 06:16 AM PDT     0.88 knots Max Flood
Tue -- 06:21 AM PDT     Sunrise
Tue -- 08:59 AM PDT     -0.01 knots Slack
Tue -- 01:34 PM PDT     -1.15 knots Max Ebb
Tue -- 02:29 PM PDT     Moonrise
Tue -- 04:17 PM PDT     0.00 knots Slack
Tue -- 07:14 PM PDT     1.45 knots Max Flood
Tue -- 07:51 PM PDT     Sunset
Tue -- 10:21 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-0.7-0.7-0.40.10.60.90.80.5-0-0.4-0.7-1-1.1-1.1-0.8-0.20.61.21.41.410.3-0.2

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 (8,2,3,4)
      (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.