Monday, March27, 2017 L-36.com


Marine Weather and Tides
Los Gatos, 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 6:58AMSunset 7:27PM Sunday March 26, 2017 9:36 PM PDT (04:36 UTC) Moonrise 5:21AMMoonset 5:09PM Illumination 0% Phase: New Moon; Moon at 29 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
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PZZ560 Pigeon Point To Point Pinos To 10 Nm- 859 Pm Pdt Sun Mar 26 2017
.small craft advisory in effect from Monday afternoon through late Monday night...
Tonight..NW winds 10 to 15 kt. Wind waves 3 to 5 ft. W swell 5 to 6 ft at 12 seconds. Chance of showers.
Mon..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. W swell 7 to 9 ft at 11 seconds.
Mon night..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. NW swell 10 to 11 ft at 11 seconds.
Tue..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 11 seconds.
Tue night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 11 seconds.
Wed..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 7 to 9 ft.
Thu..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 8 to 10 ft.
Fri..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft.
PZZ500 859 Pm Pdt Sun Mar 26 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds will continue to switch to the northwest overnight as a weak cold front passes through the waters. Northwest winds will increase Monday afternoon through Tuesday as a strong surface pressure gradient sets up across the region. At the same time a building northwest swell will pass through the waters but become messy in the near shore waters due to the strong winds. Typical gusty spring time northwest winds will continue at least through midweek and likely through Friday as the next weather system will likely increase the surface pressure gradient once again.

7 Day Forecast for Marine Location Near Los Gatos, CA
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location: 37.24, -121.95     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 262354
afdmtr
area forecast discussion
national weather service san francisco bay area
454 pm pdt Sun mar 26 2017

Synopsis A weak weather system will spread light rainfall to
most of our region later the afternoon into the overnight hours.

Showers will mostly end by Monday morning. Expect decreasing
clouds on Monday with brisk afternoon and evening northwest winds.

High pressure will build back to our region and provide warmer
days on Tuesday and Wednesday along with fewer clouds. A system
will move to our east on Thursday and bring windier conditions
along with colder temperatures.

Discussion As of 2:00 pm pdt Sunday... Multiple minor updates
to the forecast today to try to get the timing down as a weak
system will move through later. This morning kmux was indicating
possible light rain, however no tips of the buckets were noted, so
now appears it was either just clouds or virga. Anyway, main band
of rain associated with the system is still forecast to go
through over the next 6 to 12 hours and bring light rainfall to
most parts of our cwa. Timing has it moving to the north bay late
this afternoon, to sf bay by early in the evening, and down to
monterey bay by mid-evening. Rain will switch over to showers
behind the front with precipitation possible overnight. Totals
still look like 1/4" to 1/2" for the north bay mountains, 1/10" to
1/4" for the rest of the north bay plus the sc mountains, with
less than .15" for the remainder of the cwa.

Breezy northwesterly winds can be expected on Monday as a ridge of
high pressure begins to build back into our region. Highest values
should be along the coast and coastal ranges. Winds will start to
abate by the evening as the gradient slackens. Tuesday and
Wednesday are shaping up to be quiet weather days with the ridge
in place. Temperatures will return to the 60s and 70s. A few lower
80s are not of out the question in monterey county on Wednesday.

The pattern will change again on Thursday as an inside slider
moves into the intermountain region. Biggest question for a few
days has been if the low will be far enough west to produce
showers or if it will stay more to the east. 12z operational and
ensemble forecasts are trending farther to the east and now favor
drier solutions. Still could be a few showers over the north bay
mountains and east bay hills, so those were kept in the forecast.

The bigger impact will be another round of cooler
temperatures(highs mostly upper 50s to upper 60s) along with
breezy conditions. 925 mb speeds off to the ECMWF are forecast to
be up to 40 kt at the coast. Those values will likely increase
with the higher resolution models as it gets closer.

The ridge will rebuild starting on Friday and should keep dry
weather through at least all of next weekend. Temperatures will
warm back into the 60s and 70s.

Aviation As of 4:54 pm pdt Sunday... For 00z tafs. Weak front
is entering the north bay at this time with light rain at ksts.

Boundary will pass through the bay area this evening with some
light rain and lowering cigs. Southerly winds ahead of the front
will transition to wnw most terminals by 06z except later for the
monterey bay terminals as the front will take longer to arrive
down there. ExpectVFR conditions Monday but a breezy NW wind
pattern for most terminals by Monday afternoon.

Vicinity of ksfo... Southeast winds for a few more hours this
evening ahead of front with some light rain by about 02z. Precip
will be showery and fast moving with winds turning westerly by
06z. ExpectVFR skies by 16z Monday with breezy NW winds.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... ExpectVFR conditions early this evening
with frontal light rains arriving after 03z. Breezy NW winds on
Monday should mix out morning low clouds and leaveVFR skies for
much of the day.

Marine As of 3:00 pm pdt Sunday... Light southerly winds will
veer to the northwest this evening as a front moves across the
coastal waters. Light northwesterly winds will prevail tonight
then increase Monday afternoon as high pressure builds in over the
eastern pacific and a thermal trough develops over the state. A
short period westerly swell is forecast to impact the region
beginning Monday afternoon and is expected to continue building
through Monday night. Choppy squared seas are forecast to persist
through midweek as moderate to strong northwesterly winds prevail.

Mtr watches/warnings/advisories
Tngt None.

Public forecast: bell
aviation: rww
marine: cw
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 23 mi48 min SSW 8.9 G 12 57°F 60°F1017.5 hPa
46092 - MBM1 34 mi87 min S 12 55°F 56°F1018.6 hPa (-0.0)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 41 mi46 min 5.8 G 9.7 56°F 56°F6 ft1018.6 hPa (+0.0)
AAMC1 - 9414750 - Alameda, CA 41 mi48 min WSW 12 G 15 57°F 60°F1018.6 hPa
LNDC1 42 mi48 min SW 11 G 19 57°F 1018 hPa
46114 - West Monterey Bay, CA 42 mi36 min 56°F6 ft
46240 - Cabrillo Point, Monterey Bay, CA (158) 42 mi45 min 58°F3 ft
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 44 mi48 min W 16 G 25
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi48 min W 14 G 17 55°F 1018 hPa
OBXC1 44 mi48 min 55°F 54°F
MEYC1 44 mi60 min S 13 G 17 54°F 57°F1018.9 hPa
PXSC1 46 mi48 min 55°F 53°F
FTPC1 - 9414290 - San Francisco, CA 48 mi48 min W 7 G 12

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose, San Jose International Airport, CA9 mi43 minSSE 810.00 miMostly Cloudy58°F48°F72%1018.2 hPa
San Jose / Reid / Hillv, CA10 mi1.8 hrsESE 510.00 miOvercast59°F48°F68%1018.6 hPa
Mountain View, Moffett Field, CA14 mi1.7 hrsSE 810.00 miOvercast58°F50°F75%1018.4 hPa
Palo Alto Airport, CA19 mi49 minVar 410.00 miMostly Cloudy59°F51°F77%1018.3 hPa
Watsonville, Watsonville Municipal Airport, CA22 mi43 minW 33.00 miLight Rain Fog/Mist53°F53°F100%1019.4 hPa

Wind History from SJC (wind in knots)
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Last 24hrNW8NW6N3SW3CalmCalmSE3SE4CalmCalmE4SE4SE4CalmNE3E5E7SE5S8S12S10S10S8S8
1 day agoE6E5SE4CalmCalmNE3CalmSW4NW4W6W8W5NW4NW6W5NW8W11NW10NW12NW11NW13NW13NW10NW9
2 days agoN3CalmSE8SE10SE9SE12SE10SE7SE7SE9SE14E16
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Tide / Current Tables for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
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Gold Street Bridge
Click for Map
Mon -- 01:00 AM PDT     9.15 feet High Tide
Mon -- 06:57 AM PDT     Moonrise
Mon -- 07:00 AM PDT     Sunrise
Mon -- 07:56 AM PDT     0.83 feet Low Tide
Mon -- 01:01 PM PDT     9.53 feet High Tide
Mon -- 07:16 PM PDT     Moonset
Mon -- 07:26 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Mon -- 08:13 PM PDT     0.16 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.39.28.77.65.83.92.31.20.81.83.96.48.69.59.186.14.12.20.80.20.72.65.2

Tide / Current Tables for Dumbarton Point 2.3 mi NE, South San Francisco Bay, California Current
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Dumbarton Point 2.3 mi NE
Click for Map
Mon -- 01:16 AM PDT     -0.00 knots Slack
Mon -- 05:25 AM PDT     -1.24 knots Max Ebb
Mon -- 06:58 AM PDT     Moonrise
Mon -- 07:00 AM PDT     Sunrise
Mon -- 07:42 AM PDT     0.01 knots Slack
Mon -- 10:19 AM PDT     1.53 knots Max Flood
Mon -- 01:25 PM PDT     -0.00 knots Slack
Mon -- 05:44 PM PDT     -1.38 knots Max Ebb
Mon -- 07:16 PM PDT     Moonset
Mon -- 07:26 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Mon -- 08:04 PM PDT     0.00 knots Slack
Mon -- 10:42 PM PDT     1.59 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.2-0.3-0.7-1.1-1.2-1.1-0.50.31.11.51.410.3-0.3-0.7-1.1-1.3-1.4-0.9-0.10.81.41.6

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (0,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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weather_mapweather_map weather_map

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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.