Saturday, May27, 2017 L-36.com


Marine Weather and Tides
Los Gatos, CA

Version 3.4
What's New / NOTES
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 5:49AMSunset 8:21PM Saturday May 27, 2017 8:47 AM PDT (15:47 UTC) Moonrise 6:54AMMoonset 9:33PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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- 317 Am Pdt Sat May 27 2017
.small craft advisory in effect from Sunday morning through late Sunday night...
Today..NW winds 5 to 15 kt. Wind waves 1 to 3 ft...becoming 3 to 4 ft in the afternoon. NW swell 3 to 4 ft at 9 seconds. Patchy fog in the morning.
Tonight..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 ft at 11 seconds.
Sun..NW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Wind waves 1 to 3 ft...increasing to 4 to 6 ft in the afternoon. NW swell 3 ft at 11 seconds.
Sun night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 3 ft at 11 seconds.
Memorial day..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 3 ft at 10 seconds.
Tue..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 ft.
Wed..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 ft.
PZZ500 317 Am Pdt Sat May 27 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light west winds through the morning. Northwest winds will begin to increase later today and through the memorial day weekend as high pressure builds offshore. The swell train will be generally 5 foot or less through the forecast period so wind waves will dominate the sea state.

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 271151
afdmtr
area forecast discussion
national weather service san francisco bay area
451 am pdt Sat may 27 2017

Synopsis Dry with seasonable temperatures for much of the
holiday weekend. The next trough and associated cooling trend
arrives Tuesday and Wednesday with long range trends indicating
dry and benign weather pattern.

Discussion As of 4:00 am pdt Saturday... Cloud coverage is much
more patchy this morning compared to 24 hours ago with profiler
data showing a weak inversion above 4000 feet. At this time clouds
are most numerous around sf bay, marin county and the santa clara
valley. Clouds will likely continue to expand through sunrise but
given the patchy nature inland and cooling aloft expect skies to
turn mostly sunny much earlier today as high pressure builds. The
increased sunshine will lead to a noted warming trend today,
especially after such a cool Friday where most climate sites
stayed in the 60s or struggled to reach around 70 even inland. It
should be a nice start to the holiday weekend with widspread 70s
away from the coast and even some lower 80s for the warmest inland
spots while the coast should see peaks of sunshine with beach
temps in the lower 60s.

High pressure will nose over the region on Sunday with 850 mb
temps this morning around 12 celsius approaching 18 celsius inland
on Sunday afternoon. This should lead to a pronounced warming
trend for inland areas with more widespread 80s.

In general weather should be nice for memorial day but increasing
onshore flow ahead of the next trough will likely bring some gusty
west winds to the beaches with increased marine clouds. Inland
areas should enjoy another sunny and seasonably warm afternoon on
Monday for those looking to enjoy outdoor activities.

A fairly well defined upper trough will approach CAPE mendocino by
early Tuesday morning and likely bring some coastal drizzle and
increased marine push of clouds for Tuesday morning. In addition
temperatures will trend cooler again with a synoptically cooler
airmass aloft. Surface pressure gradients will increase such that
breezy west winds are forecast both Tuesday and weds in what will
likely be a fairly cool end to the month.

Ecmwf shows dry with high pressure for the start of june into the
first weekend of the month.

Aviation As of 4:45 am pdt Saturday... Stratus deck retreated
offshore late last evening and has slowly been building back
towards the coast over the last few hours. A mixed bag ofVFR to
MVFR CIGS currently, but expect to see deteriorating ceilings up
to and around sunrise, then persist around those levels for around
an hour or two into the morning. Otherwise, light winds today,
with some breezy west winds along the immediate coastline by the
afternoon. For tonight, subsidence aloft will contribute to a
compressed marine layer, reducing the inland intrusion extent,
but bringing much lower lifr to ifr cigs. In addition, onshore
winds increase tomorrow.

Vicinity of ksfo... Stratus deck expanding and thickening during
the pre dawn hours. CurrentlyVFR but would not be surprised to
see MVFR by 12-13z... Persisting into or just beyond sunrise. Low
confidence due to discontinuity of marine layer and lack of
persistence guidance.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Patchy CIGS in the predawn hours will
become increasingly lower and more widespread as additional
moisture is advected onshore. MVFR CIGS by sunrise, which will
linger into the mid morning. Model guidance is sketchy on a return
time of stratus for later today, with a return possible as early
as 01z. Light onshore winds.

Marine As of 04:43 am pdt Saturday... Light west winds through
the morning. Northwest winds will begin to increase later today
and through the memorial day weekend as high pressure builds
offshore. The swell train will be generally 5 foot or less
through the forecast period so wind waves will dominate the sea
state.

Mtr watches warnings advisories
Tday Sca... Pt pinos to pt piedras blancas 0-10 nm from 3 pm
sca... Mry bay from 3 pm
public forecast: rww
aviation: drp
marine: drp
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 23 mi47 min Calm G 2.9 56°F 66°F1018.7 hPa (+1.3)
ELXC1 - Elkhorn Slough Reserve, CA 31 mi62 min N 1 52°F 1018 hPa52°F
AAMC1 - 9414750 - Alameda, CA 41 mi47 min WSW 6 G 8.9 55°F 63°F1019.6 hPa (+1.3)
46042 - MONTEREY - 27NM West of Monterey Bay, CA 41 mi57 min 55°F 57°F4 ft1019.3 hPa (+1.5)
LNDC1 42 mi47 min SW 7 G 11 55°F 1019.1 hPa (+1.3)
46114 - West Monterey Bay, CA 42 mi47 min 58°F4 ft
46240 - Cabrillo Point, Monterey Bay, CA (158) 42 mi26 min 55°F2 ft
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 44 mi47 min SSW 9.9 G 11
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi47 min SW 7 G 8.9 55°F 1019.2 hPa (+1.3)
OBXC1 44 mi47 min 55°F 48°F
MEYC1 44 mi71 min ESE 1 G 1.9 53°F 55°F1019.3 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 45 mi47 min SE 7 G 12 54°F 1017.9 hPa (+1.1)
PXSC1 46 mi47 min 55°F 48°F
FTPC1 - 9414290 - San Francisco, CA 48 mi47 min SSW 5.1 G 7 53°F 56°F1019.4 hPa (+1.3)

Wind History for Redwood City, CA
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NE3
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Jose, San Jose International Airport, CA9 mi54 minN 010.00 miOvercast58°F50°F75%1018.9 hPa
San Jose / Reid / Hillv, CA10 mi60 minVar 410.00 miOvercast57°F50°F77%1019.6 hPa
Mountain View, Moffett Field, CA14 mi51 minWNW 310.00 miOvercast57°F48°F72%1019.5 hPa
Palo Alto Airport, CA19 mi60 minW 810.00 miOvercast57°F50°F77%1019 hPa
Watsonville, Watsonville Municipal Airport, CA22 mi54 minN 010.00 miOvercast54°F51°F90%1019.4 hPa

Wind History from SJC (wind in knots)
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Last 24hrS11S9S9S6S9S8S5Calm34NW13NW13NW9NW10NW10N8N5N6CalmNW4N3N3CalmCalm
1 day agoS15
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2 days agoSE5CalmCalmCalmNW6NW9NW8NW11W9W8NW8NW8S8S10SE13SE11SE13SE11SE12SE10SE7SE8SE5SE8

Tide / Current Tables for Gold Street Bridge, Alviso Slough, San Francisco Bay, California
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Gold Street Bridge
Click for Map
Sat -- 01:42 AM PDT     11.15 feet High Tide
Sat -- 05:50 AM PDT     Sunrise
Sat -- 07:54 AM PDT     Moonrise
Sat -- 09:43 AM PDT     -1.72 feet Low Tide
Sat -- 03:40 PM PDT     8.40 feet High Tide
Sat -- 08:19 PM PDT     Sunset
Sat -- 09:41 PM PDT     2.11 feet Low Tide
Sat -- 10:33 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
8.510.611.110.58.96.74.11.6-0.4-1.5-1.7-0.51.64.16.58.18.47.66.34.63.22.32.23.6

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
Sat -- 02:05 AM PDT     -0.01 knots Slack
Sat -- 05:50 AM PDT     Sunrise
Sat -- 06:53 AM PDT     -1.81 knots Max Ebb
Sat -- 07:55 AM PDT     Moonrise
Sat -- 09:32 AM PDT     0.01 knots Slack
Sat -- 12:18 PM PDT     1.89 knots Max Flood
Sat -- 03:49 PM PDT     -0.01 knots Slack
Sat -- 07:32 PM PDT     -0.90 knots Max Ebb
Sat -- 08:20 PM PDT     Sunset
Sat -- 09:29 PM PDT     0.00 knots Slack
Sat -- 10:33 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.30.80.1-0.4-1-1.4-1.7-1.8-1.4-0.50.51.41.91.81.40.7-0.1-0.5-0.7-0.9-0.8-0.30.31

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 (11,2,3,4)
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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.