Friday, September21, 2018 L-36.com


Marine Weather and Tides
Sand City, CA

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:54AMSunset 7:06PM Friday September 21, 2018 3:41 AM PDT (10:41 UTC) Moonrise 4:39PMMoonset 2:33AM Illumination 87% Phase: Waxing Gibbous; Moon at 11 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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PZZ535 Monterey Bay- 242 Am Pdt Fri Sep 21 2018
Today..SW winds 10 kt...increasing to 10 to 20 kt in the afternoon. Wind waves 2 ft or less...becoming 3 ft in the afternoon. W swell 3 ft at 8 seconds. Patchy fog through the day.
Tonight..SW winds 5 to 15 kt...decreasing to 5 kt after midnight. Wind waves 2 ft or less. W swell 3 ft at 8 seconds. Patchy fog in the evening.
Sat..W winds 10 kt...increasing to 10 to 20 kt in the afternoon. Wind waves 2 ft or less...becoming 3 ft in the afternoon. W swell 3 ft at 8 seconds.
Sat night..W winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 3 ft at 9 seconds.
Sun..W winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 3 ft at 9 seconds.
Mon..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 ft.
Tue..NW winds 10 kt. Wind waves 2 ft or less. W swell 3 ft.
PZZ500 242 Am Pdt Fri Sep 21 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A high pressure ridge over the eastern pacific will extend over far northern california today and tonight. A strong high pressure system south of the aleutian islands will advance eastward and become stationary off the pacific northwest by early next week.


7 Day Forecast for Marine Location Near Sand City, CA
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location: 36.66, -121.86     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 211000
afdmtr
area forecast discussion
national weather service san francisco bay area
300 am pdt Fri sep 21 2018

Synopsis Cooler temperatures are expected near the coast and
in some valleys today, but most inland areas will remain very
warm and dry. Cooling is expected region-wide over the weekend as
onshore flow increases, but temperatures are forecast to remain
near or slightly above seasonal averages. A renewed warming trend
is then likely during the first half of next week as high pressure
builds near the west coast and offshore flow potentially
develops.

Discussion As of 3:00 am pdt Friday... Another clear night
across the district, although coastal stratus is starting to
progress northward and has rounded point conception. Temperatures
are warmer than they were 24 hours ago, while dew points are
lower. Thus, rh values are 10-20% lower than last night, but
fortunately, winds are light.

Models continue to indicate a southerly stratus surge today. As
low clouds can be seen on satellite moving up the coast, arrival
to the monterey bay isn't expected until mid or late morning. If
it reaches santa cruz, high temps there could be 20 degrees cooler
than Thursday's high of 92. Some coastal valleys will also
experience cooling today, however, the inland valleys and hills
will remain very warm and dry on Friday.

An upper trough is forecast to move inland across the pacific
northwest and far northern california during the weekend. This
will result in some modest cooling across our entire region on
Saturday and Sunday as onshore flow increases. Locally gusty
westerly winds are forecast to develop, especially by Sunday
afternoon.

High pressure is forecast to rebuild over the west early next
week. This is expected to bring another robust warming trend to
the area beginning on Monday. Offshore flow could develop as early
as Sunday night and Monday morning with gusty winds possible in
the higher terrain. Temperatures are expected to level off and
continue warm through the remainder of the week as high pressure
remains over the west.

Aviation As of 10:30 pm pdt Thursday... The offshore flow has
diminished but has left a dry airmass over the area that will keep
clearVFR conditions through at least Friday morning. Southerly
flow develops along the coast Friday which may start to push
stratus up the coast from southern california Friday night.

This is becoming more likely as satellite image shows increasing
low clouds along the coast from sba south. Low CIGS could reach
the mry bay area Friday evening.

Vicinity of ksfo...VFR.

Sfo bridge approach... .Similar to sfo.

Monterey bay terminals... .Vfr.

Fire weather As of 3:00 am pdt Friday... A warm and very dry
airmass will remain over inland areas today and relative humidity
recoveries in the hills this morning are expected to be very poor
once again. However, winds are forecast to remain light through
the day.

Gradual inland cooling is forecast over the weekend as onshore
flow increases. Locally gusty westerly winds are expected by
Sunday afternoon. A renewed warming trend is then likely during
the first half of next week with inland temperatures forecast to
warm back into the 90s by Tuesday and Wednesday. Models indicate
the potential for moderate northerly (offshore) winds in the hills
on Sunday night and Monday morning and then light offshore flow
from Monday afternoon through midweek. Will need to monitor the
forecast for early next week closely for the potential for
stronger offshore winds.

Marine As of 2:42 am pdt Friday... A high pressure ridge over
the eastern pacific will extend over far northern california today
and tonight. A strong high pressure system south of the aleutian
islands will advance eastward and become stationary off the
pacific northwest by early next week.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt arena to pt reyes 0-10 nm from 6 am
public forecast: sims
aviation: W pi
marine: canepa
fire weather: dykema sims
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46240 - Cabrillo Point, Monterey Bay, CA (158) 3 mi51 min 57°F2 ft
MEYC1 4 mi66 min 54°F 60°F1011.7 hPa
46092 - MBM1 11 mi97 min NNE 5.8 56°F 56°F1011.7 hPa (-0.0)
ELXC1 - Elkhorn Slough Reserve, CA 13 mi57 min NNE 2.9 52°F 1012 hPa49°F
46239 - Point Sur, CA (157) 25 mi42 min 55°F6 ft
46114 - West Monterey Bay, CA 26 mi42 min 55°F6 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 30 mi52 min N 1.9 G 3.9 56°F 56°F6 ft1011.1 hPa (-0.3)

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Monterey Regional Airport, CA5 mi48 minN 010.00 miFair54°F48°F80%1013 hPa
Salinas, Salinas Municipal Airport, CA13 mi49 minSSE 88.00 miFair56°F50°F81%1012.4 hPa
Watsonville, Watsonville Municipal Airport, CA20 mi49 minNNW 510.00 miFair55°F42°F62%1011.8 hPa

Wind History from MRY (wind in knots)
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Last 24hrCalmCalmCalmE4E5CalmW3W5W5NW7NW6NW6NW5NW4CalmN4E4CalmCalmE4CalmCalmCalmCalm
1 day agoCalmSW3S3SW6CalmW5CalmW6W8--NW7W6W73SW6W5SW7SW4E4CalmSE33CalmCalm
2 days agoS5S4SW5W3CalmW3W6W5W8W8W9W9W9W6SW75W7S6S5S6S6W7SW3W4

Tide / Current Tables for Monterey, Monterey Harbor, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Point Pinos, California Current
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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 (6,6,7,8)
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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.