Thursday, April26, 2018 L-36.com


Marine Weather and Tides
Las Lomas, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:15AMSunset 7:53PM Thursday April 26, 2018 4:04 AM PDT (11:04 UTC) Moonrise 3:40PMMoonset 3:44AM Illumination 85% 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- 301 Am Pdt Thu Apr 26 2018
Today..W winds around 5 kt...increasing to 10 to 20 kt with gusts up to 25 kt this afternoon. Wind waves 2 ft or less... Becoming 3 to 4 ft this afternoon. W swell 3 to 4 ft at 12 seconds.
Tonight..W winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 ft or less. W swell around 3 ft at 12 seconds.
Fri..W winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell around 3 ft at 16 seconds.
Fri night..W winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 3 to 4 ft at 15 seconds.
Sat..W winds 10 to 20 kt with gusts up to 25 kt. Wind waves around 3 ft. W swell 3 to 4 ft at 14 seconds.
Sat night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 3 to 5 ft at 14 seconds.
Sun..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 3 to 4 ft.
Mon..W winds 10 to 20 kt. Wind waves 2 ft or less. NW swell 3 to 6 ft.
PZZ500 301 Am Pdt Thu Apr 26 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light west to northwest winds, but also locally breezy near coastal gaps and prominent points later today. Light to moderate seas will continue through the forecast period with a mixed south and northwest swell developing late in the week.

7 Day Forecast for Marine Location Near Las Lomas, CA
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location: 36.86, -121.76     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 261027
afdmtr
area forecast discussion
national weather service san francisco bay area
327 am pdt Thu apr 26 2018

Synopsis Upper low off the coast will keep temperatures below
normal through the end of the work week and into the weekend. Some
coastal drizzle or very light showers possible later tonight
through early Saturday as the upper low moves onshore, however
most areas will remain dry with below normal temperatures being
the main impact. Cool and dry pattern continues into early next
week.

Discussion As of 3:27 am pdt Thursday... Marine layer now in
excess of 2000 feet with fog product showing another good push of
stratus into most inland valleys. Upper low well off the coast is
responsible for the deep marine layer and below normal temperature
pattern. Unseasonably cool highs today with 60s near the
coast bays and only some low to mid 70s inland. The low will
slowly approach the coast tonight into Friday. As this occurs some
coastal drizzle may occur as the marine layer continues to deepen
overnight into Friday as initial vorticity lobs passes over the
region.

Core of upper low looks to move onshore near CAPE mendocino on
Friday with continued slight chance of some coastal drizzle in
deepening marine layer environment. Light showers associated with
the instability aloft will be confined to the far north bay,
mainly later Friday night Saturday morning. Daytime highs Friday
and Saturday continue to be unseasonably cool with deep marine
layer, substantial clouds and a cool airmass aloft leading to lots
of daytime highs only in the 60s throughout the bay area.

The main low finally ejects eastward late Saturday night into
Sunday. So for the weekend Sunday looks to have more sunshine and
slightly warmer temperatures.

Longwave trough stays over the west coast with a cold but dry
shortwave dropping towards the central coast by Monday and
Tuesday. This will continue to keep temperatures on the cool side
of normal through the end of the month but no precip expected with
this upper level shortwave. Modest warming and drying trend by the
middle of next week but no hot weather nor storms of note in
sight.

Aviation As of 10:45 pm pdt Wednesday... Lower level cooling
is continuing to lift and weaken the marine layer inversion. A
negative tilt, amplifying mid level trough arrives Thursday night
which should further weaken and mix out the marine layer. Forecast
confidence in the 06z tafs is low to slightly more than moderate
on ceiling bases, timing and duration.

Vicinity of ksfo... Westerly wind 5 to 10 knots tonight.VFR MVFR
tonight,VFR returns by late Thursday morning. Gusty westerly winds
Thursday afternoon near 20 knots.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... MVFR tonight into Thursday morning,VFR returns
by late Thursday morning.

Marine As of 02:57 am pdt Thursday... Winds will remain
generally light over the coastal waters overnight, though locally
breezy conditions could develop near coastal gaps or prominent
points during the day on Thursday. Light to moderate seas will
continue through the forecast period with a mixed south and
northwest swell developing late in the week.

Mtr watches warnings advisories
Tngt None.

Public forecast: rww
aviation: drp
marine: drp
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ELXC1 - Elkhorn Slough Reserve, CA 3 mi79 min NW 2.9 53°F 1018 hPa49°F
46092 - MBM1 16 mi99 min WNW 5.8 53°F 53°F1017.8 hPa (-0.4)
46240 - Cabrillo Point, Monterey Bay, CA (158) 18 mi73 min 56°F3 ft
MEYC1 19 mi88 min SW 1.9 G 4.1 52°F 57°F1017.9 hPa
46114 - West Monterey Bay, CA 33 mi64 min 56°F6 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 34 mi74 min N 3.9 G 7.8 53°F 56°F5 ft1017.4 hPa (-0.7)
46239 - Point Sur, CA (157) 40 mi64 min 55°F6 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA6 mi71 minW 39.00 miOvercast51°F46°F86%1017.5 hPa
Salinas, Salinas Municipal Airport, CA16 mi71 minWNW 410.00 miOvercast54°F46°F77%1018.3 hPa
Hollister, CA, CA19 mi69 minN 010.00 miOvercast50°F46°F88%1017.6 hPa
Monterey Regional Airport, CA19 mi70 minW 310.00 miOvercast53°F46°F80%1018.9 hPa

Wind History from WVI (wind in knots)
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Last 24hrCalmCalmCalmSW3S3CalmCalm4S5SW8W8S11SW9SW6SW8SW7W5CalmCalmCalmCalmCalmCalmW3
1 day agoCalmE4CalmCalmW3CalmSE4S3SW7SW7SW8S10SW8SW8S9SW7SW3CalmCalmCalmSW4SW3CalmN3
2 days agoCalmSW3CalmCalmCalmCalmCalmE3S9S9S8S10SW7SW8SW4SW5S4SW3SW3S4CalmCalmCalmCalm

Tide / Current Tables for Elkhorn Slough railroad bridge, Monterery Bay, California
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Elkhorn Slough railroad bridge
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Thu -- 02:53 AM PDT     0.94 feet Low Tide
Thu -- 04:44 AM PDT     Moonset
Thu -- 06:18 AM PDT     Sunrise
Thu -- 09:08 AM PDT     4.45 feet High Tide
Thu -- 03:05 PM PDT     -0.16 feet Low Tide
Thu -- 04:39 PM PDT     Moonrise
Thu -- 07:51 PM PDT     Sunset
Thu -- 10:00 PM PDT     5.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.91.81.10.91.21.92.73.54.24.44.33.62.41.20.2-0.20.10.81.9344.754.7

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Thu -- 01:22 AM PDT     -0.69 knots Max Ebb
Thu -- 04:44 AM PDT     Moonset
Thu -- 04:49 AM PDT     0.00 knots Slack
Thu -- 06:19 AM PDT     Sunrise
Thu -- 07:45 AM PDT     0.65 knots Max Flood
Thu -- 10:32 AM PDT     -0.00 knots Slack
Thu -- 01:30 PM PDT     -0.78 knots Max Ebb
Thu -- 04:40 PM PDT     Moonrise
Thu -- 05:05 PM PDT     0.00 knots Slack
Thu -- 07:51 PM PDT     Sunset
Thu -- 08:09 PM PDT     0.78 knots Max Flood
Thu -- 11:06 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.6-0.7-0.7-0.6-0.30.10.40.60.60.50.2-0.2-0.6-0.8-0.8-0.7-0.4-00.40.70.80.70.50

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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Wind Forecast for San Francisco/Monterey Bay Area, CA (7,2,3,4)
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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.