Monday, March27, 2017 L-36.com


Marine Weather and Tides
San Simeon, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:54AMSunset 7:24PM Monday March 27, 2017 9:32 AM PDT (16:32 UTC) Moonrise 5:57AMMoonset 6:15PM Illumination 0% Phase: New Moon; Moon at 0 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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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 908 Am Pdt Mon Mar 27 2017
.small craft advisory in effect until noon pdt today...
.gale warning in effect from noon pdt today through Tuesday morning...
Today..NW winds 20 to 25 kt...becoming 25 to 30 kt with gusts to 35 kt in the afternoon. Combined seas 5 to 6 ft dominant period 12 seconds...building to 7 to 8 ft dominant period 12 seconds in the afternoon.
Tonight..NW winds 20 to 30 kt with gusts to 40 kt. Combined seas 8 to 9 ft dominant period 8 seconds...building to 12 to 13 ft dominant period 9 seconds after midnight.
Tue..NW winds 15 to 25 kt with local gusts to 30 kt. Strongest western portion. Combined seas 11 to 12 ft dominant period 10 seconds.
Tue night..NW winds 15 to 25 kt with local gusts to 30 kt. Strongest western portion. Combined seas 11 to 12 ft dominant period 11 seconds...subsiding to 9 ft dominant period 11 seconds after midnight.
Wed..N winds 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 10 to 11 ft dominant period 15 seconds.
Wed night..N winds 20 to 25 kt with gusts to 35 kt. Combined seas 10 to 11 ft dominant period 15 seconds.
Thu..NW winds 20 to 30 kt with gusts to 35 kt. Combined seas 10 to 12 ft.
Fri..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 10 to 12 ft.
PZZ600 908 Am Pdt Mon Mar 27 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z...or 8 am pst...a 1029 mb high pressure center was located 00 nm nw of point conception and a 1008 mb low pressure center was located in nw arizona. Winds will be elevated during much of this coming week. Widespread gales are likely this afternoon and evening and possibly again Thursday and Friday. Short period seas will dominate the waters due to persistent northwest winds.

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 271450
afdmtr
area forecast discussion
national weather service san francisco bay area
750 am pdt Mon mar 27 2017

Synopsis Partly cloudy skies are forecast today along with
brisk northwest winds during the afternoon and evening. High
pressure will build over california through midweek, resulting in
dry weather and a warming trend through Wednesday. Slightly cooler
conditions are expected on Thursday as a weather system moves
into eastern california. That weather system will bring only a
slight chance of showers to the northern and eastern portions of
our area, and also result in blustery conditions near the coast
and in the hills by late Thursday. High pressure will redevelop
late in the week and result in warmer weather once again by the
weekend.

Discussion As of 7:45 am pdt Monday... Kmux shows that the last
few showers this morning have finally dissipated. Overall looks
very quiet for our weather today outside of breezy northwesterly
winds especially along the coast. Highs will mostly be in the 50s
to mid 60s. 12z NAM now in through Thursday continues to downplay
precipitation chances from the mid-week inside slider.

No major updates planned.

Previous discussion The weak frontal system that brought
light rain to much of our region Sunday afternoon and evening has
moved off to our east and south early this morning. Radar still
shows isolated light showers over our area, but all shower
activity is expected to end by daybreak as drier air continues to
move in from the northwest. That drier airmass is already
resulting in clearing in the north bay and this clearing trend is
expected to continue from north to south through this morning. By
afternoon, expect mostly sunny to partly cloudy skies in all
areas.

Surface high pressure will begin to build off the northern
california coast today and the resulting tightening pressure
gradients will generate brisk northwest winds along the coast
this afternoon. Local gusts up to 35 mph are possible in the
windier coastal locations from late afternoon through early
evening.

An upper level ridge is forecast to build over california during
the next few days, resulting in dry weather and a warming trend
through Wednesday. By Wednesday, high temperatures will be mostly
in the upper 60s and 70s, with a few lower 80s possible in
monterey and san benito counties.

Daytime temperatures on Thursday will cool by 5 to 10 degrees as
an inside slider type system drops inland to our east. The gfs
keeps all precipitation with this system to our north and east,
but the ECMWF tracks the system a bit farther to the west and
clips the northern and eastern fringes of our area with light
shower activity late Wednesday night and Thursday morning. Either
solution will result in blustery conditions in the hills and near
the coast by Thursday afternoon when locally strong northwest
winds develop. Northerly winds will ease near the coast by Friday,
but remain locally strong and gusty in the hills into Friday
night.

Upper level ridging is forecast to redevelop over california just
in time for the weekend, and current model projections indicate
dry and seasonably warm weather on both Saturday and Sunday.

Aviation As of 4:55 am pdt Monday for 12z tafs. Winds have
switched to the northwest overnight with a weak frontal passage.

ExpectVFR conditions to prevail after 16z. There are a few low
clouds around ksfo and kmry as of 11z, but not expecting there to
be significant impacts as the boundary layer continues to dry
through the day. West to northwest winds can be expected this
afternoon with possible gusts exceeding 25 kts in the afternoon.

Vicinity of ksfo... MVFR conditions early this morning with a few
low cloud decks. Expect ceilings to improve by 16z as drier air
continues to move in. West to northwest winds will become gusty
this afternoon in excess of 20 to 25 kts.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... A few low clouds continue to impact kmry
this morning with ceilings around 3000 ft. ExpectVFR conditions
by mid-morning with gusty west to northwest winds this afternoon,
notably at ksns.

Marine As of 04:47 am pdt Monday... Northwest winds will
increase this afternoon through at least Tuesday as a strong
surface pressure gradient builds across the region. At the same
time, a building northwest swell will pass through the waters.

Typical gusty spring time northwest winds will continue at least
through midweek and likely through Friday as the next weather
system will likely increase the surface pressure gradient once
again.

Mtr watches/warnings/advisories
Tday Sca... Pt arena to pt reyes 0-10 nm from 12 pm
sca... Pt reyes to pigeon pt 0-10 nm from 12 pm
sca... Pigeon pt to pt pinos 0-10 nm from 12 pm
sca... Pt arena to pigeon pt 10-60 nm from 12 pm
sca... Pigeon pt to pt piedras blancas 10-60 nm from 12 pm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Mry bay from 12 pm
sca... Sf bay from 12 pm
public forecast: bell/dykema
aviation: rowe
marine: rowe
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46028 - CAPE SAN MARTIN - 55NM West Northwest of Morro Bay, CA 6 mi43 min NNW 19 G 23 56°F 55°F7 ft1022.2 hPa (+2.0)
46239 - Point Sur, CA (157) 51 mi71 min 55°F6 ft
46215 - Diablo Canyon, CA (076) 58 mi43 min 55°F5 ft

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Paso Robles, Paso Robles Municipal Airport, CA62 mi40 minNNW 14 G 1910.00 miFair53°F45°F74%1021.3 hPa

Wind History from PRB (wind in knots)
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Last 24hrCalmN43W644N4N7W8S4S6S7S5SW4CalmS4SW3NE3NW7NW9NW8NW10NW9N14
G19
1 day agoNW10NW10NW8NW9NW7NW7N9N10NW9E7CalmW76NW8NW8NW5NW4NW6CalmNE3E4E3NE3Calm
2 days agoE4S4SW11S10S10SW9SW8S5SW9S7SW6SE5CalmE3SE5SE5SE5S5S4S5NW10NW5NW7NW5

Tide / Current Tables for San Simeon, California
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San Simeon
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Mon -- 04:15 AM PDT     0.60 feet Low Tide
Mon -- 06:54 AM PDT     Moonrise
Mon -- 06:57 AM PDT     Sunrise
Mon -- 10:20 AM PDT     5.09 feet High Tide
Mon -- 04:37 PM PDT     -0.10 feet Low Tide
Mon -- 07:12 PM PDT     Moonset
Mon -- 07:22 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Mon -- 10:52 PM PDT     5.04 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
431.910.60.81.42.53.64.65.154.33.11.80.70-0.10.51.52.844.85

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Mon -- 04:21 AM PDT     0.28 feet Low Tide
Mon -- 06:52 AM PDT     Moonrise
Mon -- 06:56 AM PDT     Sunrise
Mon -- 10:27 AM PDT     5.11 feet High Tide
Mon -- 04:43 PM PDT     -0.26 feet Low Tide
Mon -- 07:11 PM PDT     Moonset
Mon -- 07:21 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Mon -- 10:55 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
431.80.80.30.41.12.23.44.5554.43.21.90.7-0.1-0.20.31.32.63.94.75

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (12,3,4,5)
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Ground Weather Radar Station Vandenberg AFB, CA
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weather_mapweather_map weather_map

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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.