Thursday, July18, 2019 L-36.com


Marine Weather and Tides
San Simeon, CA

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:59AMSunset 8:22PM Thursday July 18, 2019 8:44 PM PDT (03:44 UTC) Moonrise 8:53PMMoonset 6:37AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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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PZZ565 Coastal Waters From Point Pinos To Point Piedras Blancas California Out To 10 Nm- 750 Pm Pdt Thu Jul 18 2019
Tonight..W winds around 5 kt, increasing to 5 to 10 kt after midnight. Wind waves 4 to 5 ft. SW swell around 2 ft at 17 seconds. Patchy fog after midnight.
Fri..S winds 10 to 15 kt. Wind waves 5 to 6 ft. SW swell around 2 ft at 16 seconds.
Fri night..SE winds 5 to 10 kt. Wind waves 5 to 6 ft. SW swell around 2 ft at 15 seconds.
Sat..S winds 5 to 10 kt. Wind waves 5 to 6 ft. S swell around 2 ft at 14 seconds.
Sat night..W winds around 5 kt. Wind waves around 5 ft. S swell around 2 ft at 14 seconds. Patchy fog.
Sun..W winds around 5 kt. Wind waves 4 to 5 ft. S swell around 2 ft at 14 seconds. Patchy fog.
Sun night..NW winds 5 to 10 kt. Wind waves 4 to 5 ft. S swell around 2 ft at 12 seconds.
Mon..NW winds 10 to 15 kt. Wind waves around 4 ft.
Tue..NW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft.
PZZ500 750 Pm Pdt Thu Jul 18 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Split flow will develop overnight through Friday with light to locally moderate northwest winds in the northern outer waters and southerly winds along the coast. The sea state will continue to be dominated by steeper northwest wind waves mixed with a light long period southwest swell.


7 Day Forecast for Marine Location Near San Simeon, CA
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location: 35.65, -121.79     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 182340
afdmtr
area forecast discussion
national weather service san francisco bay area
440 pm pdt Thu jul 18 2019

Synopsis An inland cooling trend will persist through late
week with periods of night and morning low clouds. Temperatures
will then warm slightly this weekend before rebounding back to
near seasonal normals by next week.

Discussion As of 01:49 pm pdt Thursday... The modestly deep
marine layer in place mixed out well over inland areas this
afternoon with mostly sunny conditions and temperatures in the
upper 60s to middle 80s. Meanwhile, stratus coverage persists
around the marin county coastline, over western portions of san
francisco and locally into the monterey bay region. Low clouds
will redevelop along the coast before spreading back into the
inland valleys overnight with temperatures cooling into the 50s
for most locations. Patchy fog and coastal drizzle will also be
possible late tonight into Friday morning.

The inland cooling trend will continue into Friday as a surface low
pressure system currently over northern california shifts offshore.

This will result in southerly surface winds which will potentially
maintain low clouds along south and southwest facing locations
through a good portion of the day on Friday. Little change is
forecast heading into Saturday with temperatures generally below
seasonal averages.

Building high pressure over the desert southwest will result in a
slight warming trend to begin on Sunday, especially for inland
areas. However, conditions near the coast will remain cooler as
onshore flow persists. The ridge to the east will begin to build
westward early next week and allow for temperatures to rebound back
to near seasonal averages. However, a deepening trough off of the
west coast will prevent the ridge from strengthening too much over
our region next week.

Aviation As of 4:40 pm pdt Thursday... For 00z tafs. Fractured
stratus deck from point arena southward through southern
california this evening. Breezy onshore winds this afternoon and
beginning to see some fingers of stratus push inland through the
monterey bay and golden gate gap. Expect to see some early
arrivals of the marine layer over terminals over the new few
hours, starting with ksns by 01z. Forecast confidence on lower end
given significant difference between model output and potential
for some pockets of drier air overnight.

Vicinity of ksfo... Sw-w winds 10-15 kt with gusts to 20 kt this
evening, then weakening overnight. Marine layer attempting to push
through the san bruno gap which will warrant close watch.

Otherwise, expecting sct bkn clouds overnight, with bkn posbl
after 06z.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Onshore winds up to around 12kt the rest
of the day. Finger of stratus bending towards ksns at this moment
and should soon overtake the airport between 00-01z, then
overtake kmry later this evening. Lifr-ifr CIGS overnight.

Marine As of 08:44 am pdt Thursday... Generally light to
moderate northwest winds will persist through Monday with locally
gusty winds over the northern outer waters. Lighter southerly flow
can be expected along the coast today and into the start of the
weekend. The sea state will continue to be dominated by short
period wind generated waves along with a light long period
southerly swell.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Sf bay until 9 pm
public forecast: rgass
aviation: drp
marine: as
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46239 - Point Sur, CA (157) 51 mi44 min 56°F4 ft
46215 - Diablo Canyon, CA (076) 58 mi44 min 55°F3 ft

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Paso Robles Municipal Airport, CA62 mi51 minS 1210.00 miFair69°F55°F61%1011.4 hPa

Wind History from PRB (wind in knots)
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Last 24hrS7SE3SE5CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3SW10
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1 day agoNW10NW13NW12NW13NW7NW8NW9W12NW6NW5NW8NW5NW53CalmNW5SW10SW15SW17S16SW15SW18
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2 days agoNW14NW15NW18NW14NW9NW10NW10NW7--CalmCalmCalmNW7NW5NW9NW17NW16NW16
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Tide / Current Tables for San Simeon, California
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San Simeon
Click for Map
Thu -- 06:02 AM PDT     Sunrise
Thu -- 06:19 AM PDT     -0.45 feet Low Tide
Thu -- 07:35 AM PDT     Moonset
Thu -- 12:51 PM PDT     3.86 feet High Tide
Thu -- 05:31 PM PDT     2.35 feet Low Tide
Thu -- 08:19 PM PDT     Sunset
Thu -- 09:50 PM PDT     Moonrise
Thu -- 11:36 PM PDT     5.66 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.64.93.72.310-0.4-0.30.31.22.33.23.73.93.63.22.72.42.42.83.44.35.15.6

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Thu -- 06:01 AM PDT     Sunrise
Thu -- 06:17 AM PDT     -0.44 feet Low Tide
Thu -- 07:34 AM PDT     Moonset
Thu -- 12:51 PM PDT     3.74 feet High Tide
Thu -- 05:29 PM PDT     2.28 feet Low Tide
Thu -- 08:17 PM PDT     Sunset
Thu -- 09:48 PM PDT     Moonrise
Thu -- 11:36 PM PDT     5.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.54.73.52.20.90-0.4-0.30.31.22.23.13.63.73.53.12.62.32.32.73.44.24.95.4

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 (23,6,7,8)
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Ground Weather Radar Station Vandenberg AFB, 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.