Monday, June24, 2019 L-36.com


Marine Weather and Tides
Los Altos Hills, CA

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Sunrise 5:47AMSunset 8:34PM Monday June 24, 2019 11:21 AM PDT (18:21 UTC) Moonrise 12:00AMMoonset 11:34AM Illumination 53% Phase: Third Quarter Moon; Moon at 22 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 Coastal Waters From Pigeon Point To Point Pinos California Out To 10 Nm- 824 Am Pdt Mon Jun 24 2019
Today..W winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft at 9 seconds.
Tonight..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 9 seconds.
Tue..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. NW swell 4 to 5 ft at 8 seconds.
Tue night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw 4 to 6 ft at 8 seconds and S around 3 ft at 16 seconds.
Wed..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw 3 to 4 ft at 9 seconds and S around 3 ft at 15 seconds.
Wed night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. Mixed swell nw 2 to 3 ft at 11 seconds and S around 3 ft at 14 seconds.
Thu..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
Fri..NW winds 10 to 20 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft.
PZZ500 824 Am Pdt Mon Jun 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwesterly winds will continue over the northern outer waters and along the coast north of point reyes through Tuesday as high pressure remains over the eastern pacific. These winds will result in steep fresh swell creating hazardous conditions over the waters, especially for smaller vessels. Winds will diminish on Tuesday as high pressure weakens and an upper low moves offshore of the pacific northwest.


7 Day Forecast for Marine Location Near Los Altos Hills, CA
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location: 37.35, -122.18     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 241734
afdmtr
area forecast discussion
national weather service san francisco bay area
1034 am pdt Mon jun 24 2019

Synopsis A cooling trend will get underway today and continue
through midweek, with temperatures forecast to cool by 10 to 20
degrees by Wednesday. In addition, expect an increase in night and
morning low clouds over the next few days. Temperatures will warm
a bit late in the week and into next weekend, but remain slightly
below seasonal averages.

Discussion As of 9:18 am pdt Monday... Visible satellite
imagery reveals marine stratus impacting parts of the san
francisco bay area this morning. Observations from the terminals
across the region indicate ceilings are around 200 to 1,000 ft agl
with a relatively shallow marine layer. As the morning
progresses, the low clouds will mix out of the inland valleys and
the san francisco bay as mostly sunny skies return with some
passing high clouds. Some locations along the immediate coast may
see some low clouds linger through the day. High temperatures will
begin trending downward this afternoon as an upper level low
gradually approaches the pacific northwest. The most noticeable
cooling will be felt across the interior where temperatures will
drop by 7-10 degrees from yesterday to today. The present short-
term forecast remains on track; for additional details beyond day
1, please refer to the previous discussion section.

Prev discussion As of 2:55 am pdt Monday... Low clouds and fog
formed overnight along most of our coastline from bodega bay
southward, and also locally inland through the golden gate and up
the salinas valley. This increasing coverage of marine layer
stratus and fog is in response to a gradual uptick in onshore flow
as the upper ridge that brought very warm temperatures to our
inland areas over the weekend begins to break down. The marine
layer is still relatively shallow at present, but is expected to
deepen over the next few days as an upper trough currently
settling over the pacific northwest digs south over california.

The deepening trough will also enhance onshore flow and bring a
cooler airmass south into california. 850 mb temperatures are
forecast to drop from about 21 deg c presently to around 11 deg c
by Wednesday. Thus, we can expect a robust cooling trend through
midweek. By Wednesday, high temperatures are forecast to be as
much as 20 degrees cooler than this past weekend's temps and be
anywhere from 5 to 12 degrees cooler than normal.

The models are in good agreement regarding this upcoming cooling
trend and indicate that Wednesday and Thursday will be the coolest
days of the week. Slightly warmer temperatures are expected on
Friday and on into the weekend, as the core of the upper trough
lifts to the northeast. However, the longwave trough position will
remain positioned near the west coast, and so temperatures will
likely remain at least slightly below average on through the
upcoming weekend.

In the longer range, the ensemble mean of both the GFS and ecmwf
indicate that the longwave trough position will retrograde as we
move into early july, allowing a ridge over the desert southwest
to build back towards california. Thus, we may see warmer
temperatures by the july 4th holiday, especially across inland
areas.

Aviation As of 10:25 am pdt Monday... For 18z tafs.VFR. Low
clouds over the region this morning have dissipated and retreated
to the coastline as of 1730z. Look for an increase in onshore
winds this afternoon with locally gusty conditions around the bay
area terminals. Low clouds will spread inland once again this
evening and persist through early Tuesday morning.

Vicinity of ksfo...VFR. W to NW winds will increase this
afternoon to around 15 kt with gusts to 20 kt possible. Low
clouds will return around the terminal early Tuesday morning, yet
confidence of a ceiling developing over ksfo remains low.

Sfo bridge approach... Similar to sfo. However, higher confidence
of low clouds over the approach Tuesday morning.

Monterey bay terminals...VFR. Slight increase in onshore flow this
afternoon. Low clouds likely to return late this evening and
persist through around 17z-18z Tuesday.

Marine As of 10:25 am pdt Monday... Gusty northwesterly winds
will continue over the northern outer waters and along the coast
north of point reyes through Tuesday as high pressure remains over
the eastern pacific. These winds will result in steep fresh swell
creating hazardous conditions over the waters, especially for
smaller vessels. Winds will diminish on Tuesday as high pressure
weakens and an upper low moves offshore of the pacific northwest.

Mtr watches warnings advisories
Tday Sca... Pt arena to pt reyes 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
public forecast: rowe dykema
aviation: rgass
marine: rgass
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 11 mi51 min N 6 G 8.9 65°F 75°F1012.9 hPa
AAMC1 - 9414750 - Alameda, CA 30 mi57 min W 4.1 G 6 62°F 69°F1013 hPa
LNDC1 31 mi51 min NW 5.1 G 8 62°F 1012.5 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 32 mi51 min W 2.9 G 6
OBXC1 33 mi51 min 60°F 60°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 33 mi51 min W 6 G 8.9 62°F 1011.6 hPa
OKXC1 - 9414776 - Oakland (Berth 34), CA 33 mi51 min WNW 8 G 8.9 59°F 1012.6 hPa
PXSC1 33 mi51 min 62°F 57°F
FTPC1 - 9414290 - San Francisco, CA 35 mi57 min WSW 7 G 9.9 57°F 62°F1013.1 hPa
46237 - San Francisco Bar, CA (142) 39 mi51 min 60°F4 ft
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi34 min NNE 1 61°F 1013 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 40 mi51 min SSW 7 G 11 59°F 1012.9 hPa
RCMC1 - 9414863 - Richmond, CA 41 mi51 min 63°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 41 mi31 min W 1.9 G 3.9 57°F 61°F6 ft1013 hPa (+0.5)
46092 - MBM1 42 mi68 min S 3.9 55°F 59°F1013.3 hPa
MLSC1 - Moss Landing, South Harbor, CA 43 mi131 min NNW 1 G 4.1 55°F 1013.9 hPa54°F
ELXC1 - Elkhorn Slough Reserve, CA 44 mi96 min SW 1.9 57°F 1014 hPa56°F
46114 - West Monterey Bay, CA 44 mi51 min 61°F7 ft
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 45 mi31 min S 5.8 G 7.8 56°F 59°F5 ft1013.6 hPa
MZXC1 - 9415102 - Martinez-Amorco CA 47 mi51 min WNW 16 G 17 64°F 68°F1011.6 hPa
UPBC1 48 mi51 min WNW 12 G 16
PCOC1 - 9415144 - Port Chicago, CA 49 mi51 min W 16 G 18 65°F 69°F1011.6 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 49 mi51 min W 8.9 G 12 62°F 1012 hPa

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA9 mi85 minN 010.00 miFair70°F59°F68%1012.5 hPa
Palo Alto Airport, CA10 mi34 minN 710.00 miMostly Cloudy66°F60°F83%1012.2 hPa
San Jose, San Jose International Airport, CA13 mi28 minNW 610.00 miMostly Cloudy75°F57°F55%1011.6 hPa
San Carlos Airport, CA13 mi34 minN 89.00 miMostly Cloudy66°F59°F78%1012.5 hPa
San Jose / Reid / Hillv, CA19 mi31 minN 010.00 miMostly Cloudy75°F53°F47%1011.8 hPa
Half Moon Bay Airport, CA20 mi26 minS 75.00 miFog/Mist57°F55°F94%1013.5 hPa
San Francisco, San Francisco International Airport, CA21 mi25 minNNE 610.00 miMostly Cloudy67°F57°F71%1012.2 hPa
Hayward, Hayward Air Terminal, CA22 mi27 minW 69.00 miFair68°F57°F70%1013 hPa
Oakland, Metro Oakland International Airport, CA24 mi28 minW 710.00 miMostly Cloudy68°F55°F65%1012.3 hPa

Wind History from NUQ (wind in knots)
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Last 24hrN8N8N9NW11NW11N9NW9N8N6N4W3NW4NW4NW3CalmW3CalmCalmCalmNE3CalmN3CalmN8
1 day agoN6N9N11N10N12
G18
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N9CalmNW3CalmCalmCalmW3CalmCalmCalmCalmCalmCalmN3N5N4
2 days agoN9N8N13N11N13N13N12NW10N10NE5CalmCalmW3CalmCalmCalmCalmS3CalmCalmCalmCalmNE5N5

Tide / Current Tables for Palo Alto Yacht Harbor, California
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Palo Alto Yacht Harbor
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Mon -- 12:57 AM PDT     Moonrise
Mon -- 01:44 AM PDT     2.77 feet Low Tide
Mon -- 05:48 AM PDT     Sunrise
Mon -- 06:16 AM PDT     6.77 feet High Tide
Mon -- 12:34 PM PDT     Moonset
Mon -- 01:42 PM PDT     0.90 feet Low Tide
Mon -- 07:20 PM PDT     7.29 feet High Tide
Mon -- 08:33 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.732.83.44.766.76.55.64.43.42.51.71.10.91.63.156.57.27.16.55.85

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 -- 12:57 AM PDT     Moonrise
Mon -- 01:31 AM PDT     0.00 knots Slack
Mon -- 03:35 AM PDT     0.55 knots Max Flood
Mon -- 05:48 AM PDT     Sunrise
Mon -- 06:18 AM PDT     -0.00 knots Slack
Mon -- 10:54 AM PDT     -0.87 knots Max Ebb
Mon -- 12:33 PM PDT     Moonset
Mon -- 01:34 PM PDT     0.00 knots Slack
Mon -- 04:22 PM PDT     0.99 knots Max Flood
Mon -- 07:49 PM PDT     -0.00 knots Slack
Mon -- 08:33 PM PDT     Sunset
Mon -- 11:43 PM PDT     -0.66 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-0.20.20.50.50.40.1-0.1-0.4-0.6-0.8-0.9-0.6-0.20.20.7110.80.4-0-0.3-0.5-0.6

Weather Map and Satellite Images
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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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (14,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.