Sunday, July22, 2018 L-36.com


Marine Weather and Tides
Cupertino, CA

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What's New / NOTES
7/21/2018 Trying to make page Mobile Friendly

Sunrise 6:04AMSunset 8:25PM Sunday July 22, 2018 5:49 AM PDT (12:49 UTC) Moonrise 3:23PMMoonset 1:13AM Illumination 71% 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
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PZZ560 Pigeon Point To Point Pinos To 10 Nm- 222 Am Pdt Sun Jul 22 2018
.small craft advisory in effect from Monday afternoon through Monday evening...
Today..W winds 5 kt...increasing to 5 to 15 kt in the afternoon. Wind waves 2 ft or less...becoming 3 to 4 ft in the afternoon. Mixed swell nw 3 to 4 ft at 9 seconds and sw 3 ft at 17 seconds. Patchy fog in the morning.
Tonight..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. Mixed swell nw 2 to 3 ft at 9 seconds and sw 3 ft at 17 seconds. Patchy fog after midnight.
Mon..NW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Wind waves 3 to 5 ft. Mixed swell nw 2 to 3 ft at 8 seconds and sw 3 to 4 ft at 19 seconds. Patchy fog in the morning.
Mon night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. Mixed swell nw 2 to 3 ft at 8 seconds and sw 3 to 4 ft at 21 seconds. Patchy fog after midnight.
Tue..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. Mixed swell nw 2 ft at 8 seconds and S 3 to 4 ft at 18 seconds. Patchy fog in the morning. Patchy fog after midnight.
Wed..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. Mixed swell nw 2 to 3 ft and S 3 to 4 ft. Patchy fog.
Thu..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. Mixed swell nw 2 ft and S 3 ft. Patchy fog.
PZZ500 222 Am Pdt Sun Jul 22 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds will continue across the coastal waters through the rest of the weekend. Northwesterly winds will then increase through the coming week. Two long period southerly swells will impact the region with the first through the weekend and the second arriving early next week.

7 Day Forecast for Marine Location Near Cupertino, CA
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location: 37.31, -122.06     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 221134
afdmtr
area forecast discussion
national weather service san francisco bay area
434 am pdt Sun jul 22 2018

Synopsis Seasonable conditions will remain in place through
Monday. High pressure will build over the region by midweek
bringing hot temperatures to interior areas and in the mountains.

Discussion As of 3:40 am pdt Sunday... The marine layer has
deepened somewhat to around 1800 feet, and coastal low clouds
appear to be spreading a little farther inland, per satellite
imagery. Similar or slightly cooler high temps are expected today
due to the slightly deeper marine layer and continued onshore
flow. Highs should range from the 60s to mid 70s at the coast, to
the 80s and 90s inland. Not much change is indicated for Monday as
conditions remain fairly similar.

By midweek an upper level ridge will build westward into
california from the four corners region which will initiate a
warming trend for the area. The areas expected to be most
affected will be southern and central california, but hot
temperatures are expected to edge into our area as well. In
addition, overnight low temperatures will remain warm in the
higher terrain, thus a heat advisory has been issued for the east
bay hills as well as the mountains of san benito and inland
monterey counties, and the southern salinas valley beginning
midday Tuesday and extending through Wednesday afternoon. The
ridge will begin to moderate on Thursday with slight cooling
expected for the end of the week.

Aviation As of 04:34 am pdt Sunday... For 12z tafs. Conditions
currently range fromVFR at klvk to lifr at kmry as stratus
remains along the coast and inland. Clearing expected this morning
around 17z for most areas. Once stratus clears,VFR conditions to
prevail through this evening when another early return is
forecast. Light to moderate onshore winds this afternoon.

Vicinity of ksfo... MVFR to ifr CIGS through around 16z-17z.

Confidence on clearing time is low. Westerly winds increasing this
afternoon to 15-20 kt.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals... Ifr lifr CIGS through around 17z before
vfr conditions prevail. Early return of ifr CIGS is expected late
this afternoon early this evening. Generally light winds through
the period.

Marine As of 2:22 am pdt Sunday... Generally light winds will
continue across the coastal waters through the rest of the
weekend. Northwesterly winds will then increase through the coming
week. Two long period southerly swells will impact the region
with the first through the weekend and the second arriving early
next week.

Mtr watches warnings advisories
Tday Sca... Sf bay from 2 pm
public forecast: sims
aviation: as
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 16 mi32 min 75°F
AAMC1 - 9414750 - Alameda, CA 34 mi38 min W 7 G 9.9 61°F 71°F1018.1 hPa
LNDC1 36 mi38 min W 4.1 G 6 61°F 1017.9 hPa
OBXC1 37 mi38 min 61°F 61°F
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 37 mi38 min W 8 G 9.9
OKXC1 - 9414776 - Oakland (Berth 34), CA 38 mi32 min W 7 G 9.9 60°F 1017.9 hPa
ELXC1 - Elkhorn Slough Reserve, CA 38 mi65 min Calm 59°F 1018 hPa59°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 38 mi38 min WSW 6 G 8.9 60°F 1016.9 hPa
PXSC1 38 mi38 min 61°F 61°F
46092 - MBM1 39 mi46 min Calm 59°F 60°F1017.8 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 40 mi38 min SW 4.1 G 7 60°F 63°F1018.1 hPa
46042 - MONTEREY - 27NM West of Monterey Bay, CA 40 mi60 min WNW 1.9 G 3.9 59°F 61°F4 ft1017.6 hPa (+0.0)
46114 - West Monterey Bay, CA 43 mi50 min 61°F5 ft
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 44 mi60 min SSW 1.9 G 3.9 60°F 60°F5 ft1018.3 hPa (+0.0)
PPXC1 - 9414847 - Richmond (Point Potrero), CA 44 mi32 min WSW 6 G 8 62°F 1018.1 hPa
46237 - San Francisco Bar, CA (142) 45 mi50 min 61°F3 ft
RCMC1 - 9414863 - Richmond, CA 46 mi38 min SW 5.1 G 8.9 61°F 65°F1017.6 hPa
46240 - Cabrillo Point, Monterey Bay, CA (158) 48 mi29 min 57°F2 ft

Wind History for Redwood City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA8 mi54 minN 510.00 miOvercast62°F60°F93%1018.1 hPa
San Jose, San Jose International Airport, CA8 mi57 minN 010.00 miPartly Cloudy64°F57°F78%1017.4 hPa
San Carlos Airport, CA18 mi55 minWNW 310.00 miOvercast63°F57°F83%1017.6 hPa
Hayward, Hayward Air Terminal, CA24 mi56 minNNW 610.00 miOvercast63°F57°F81%1018.5 hPa

Wind History from NUQ (wind in knots)
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Last 24hrN3Calm3N4N8N7NW8N10N15N11N12N15
G21
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N16N11N9N8N7N5NE3N4N4N4N5
1 day agoN3NW33N3N5N8N9N12N11NW11N14
G19
N14N12N9N7NW7NW7NW5N5N6N6N7N6N4
2 days ago3NE4N6N5N64N8N7N9N11NW10NW11N10NW10NW10NW5W4NW3W3N4N5NW3N5NE3

Tide / Current Tables for Upper Guadalupe Slough, San Francisco Bay, California
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Upper Guadalupe Slough
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Sun -- 02:12 AM PDT     Moonset
Sun -- 05:03 AM PDT     0.56 feet Low Tide
Sun -- 06:04 AM PDT     Sunrise
Sun -- 10:53 AM PDT     6.81 feet High Tide
Sun -- 04:22 PM PDT     Moonrise
Sun -- 04:26 PM PDT     2.73 feet Low Tide
Sun -- 08:24 PM PDT     Sunset
Sun -- 09:56 PM PDT     10.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.25.33.41.90.90.612.13.75.36.46.86.45.54.43.42.82.945.87.89.510.19.7

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
Sun -- 02:00 AM PDT     -1.07 knots Max Ebb
Sun -- 02:12 AM PDT     Moonset
Sun -- 04:51 AM PDT     0.00 knots Slack
Sun -- 06:04 AM PDT     Sunrise
Sun -- 07:45 AM PDT     1.11 knots Max Flood
Sun -- 10:37 AM PDT     -0.00 knots Slack
Sun -- 02:44 PM PDT     -0.50 knots Max Ebb
Sun -- 04:22 PM PDT     Moonrise
Sun -- 04:37 PM PDT     0.00 knots Slack
Sun -- 07:21 PM PDT     0.93 knots Max Flood
Sun -- 08:24 PM PDT     Sunset
Sun -- 10:04 PM PDT     -0.01 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.9-1-1.1-1-0.60.10.711.10.90.4-0.1-0.3-0.4-0.5-0.5-0.30.20.70.90.90.60.1-0.4

Weather Map and Satellite Images
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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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (8,2,3,4)
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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.