Thursday, September20, 2018 L-36.com


Marine Weather and Tides
Templeton, CA

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9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:48AMSunset 7:02PM Thursday September 20, 2018 1:27 AM PDT (08:27 UTC) Moonrise 3:55PMMoonset 1:37AM Illumination 78% Phase: Waxing Gibbous; Moon at 10 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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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 835 Pm Pdt Wed Sep 19 2018
Tonight..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 9 seconds.
Thu..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 5 ft at 9 seconds.
Thu night..NW winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 9 seconds.
Fri..SE winds 5 to 10 kt, becoming sw in the afternoon. Wind waves 2 ft or less. NW swell 3 ft at 10 seconds.
Fri night..Winds variable 10 kt or less. Wind waves 2 ft or less. NW swell 3 to 4 ft at 9 seconds.
Sat..Winds variable 10 kt or less, becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 ft at 9 seconds.
Sat night..NW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds.
Sun..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft.
Mon..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft.
PZZ600 835 Pm Pdt Wed Sep 19 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt, a 1026 mb surface high was located about 600 nm west of eureka and a 998 mb low was south of las vegas.


7 Day Forecast for Marine Location Near Templeton, CA
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location: 35.56, -120.71     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 200610
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1110 pm pdt Wed sep 19 2018

Synopsis 19 801 pm.

Temperatures will be a bit warmer on Thursday then change little
into early next week. There will be overnight and morning low clouds
and fog along much of the coastline with little inland penetration.

Offshore winds will be gusty across santa barbara south coast and
portions of ventura and los angeles counties on Thursday.

Short term (wed-sat) 19 748 pm.

***update***
another quiet evening across the district. Latest satellite and
surface observations indicate clear skies across the area except
for a patch of stratus fog around the lompoc area. Latest sounding
data indicates marine inversion based around 1000 feet deep. As
for winds, there are some localized sundowner winds across
southern santa barbara county (gusting 40-45 mph at refugio and
gaviota), but light winds elsewhere.

Overnight, surface pressure gradients are forecast to turn weakly
offshore. This weak offshore flow should greatly limit any stratus
development. At worst, will expect continuation of patchy stratus
across the central coast and the possibility of some stratus
across the lax coastal plain. Other than this potential patchy
stratus, skies should remain clear overnight.

As for winds, the gusty sundowner winds occurring from gaviota
westward should gradually diminish overnight. Given the localized
nature of this winds, do not feel the need for any advisories at
this time. Otherwise, the offshore gradients overnight may produce
some locally gusty offshore winds across the mountains and
foothills, but this winds should remain very localized and well
below advisory levels.

Overall, current forecast has very good handle on the immediate
short term. No significant forecast updates are anticipated.

***from previous discussion***
the trough axis has shifted east of the area now and we're
starting to see pressure gradients trends trending offshore which
means soon the actual trends themselves will be offshore as well.

This is a typical start of an offshore event though it's still
early in the season for this and in this case it will be pretty
weak with only some localized north northeast winds. The strongest
will be through the i5 corridor and the foothills and mtns of
slo sba counties. Stratus was already pretty minimal today and the
offshore push Thursday should have no problem keeping any return
very minimal as well and likely confined to SRN la county coastal
areas. The combination of the offshore push and rising heights
behind the trough passage will lead to at least a few degrees of
warming most areas, but especially on the coast. Models show
northeast winds 20-30kt at 850 along the central coast which is a
favorable set up for a big warmup in downslope areas such as
slo and pismo. Sundowners expected again tonight with a little
more northeast developing later on which will hit the eastern
santa ynez range a little more. But still mostly below advisory
levels.

It's pretty much a "one off" offshore event as gradients quickly
reverse Friday and Saturday and low clouds likely return to all
coastal areas and possibly lower valleys. So coastal areas,
especially central coast, will likely see a big drop in highs
Friday with little change Saturday. Inland areas either little
change or slightly warmer as the building ridge aloft will be the
primary driver for temps there.

Long term (sun-wed) 19 207 pm.

The ECMWF is a little stronger with the next trough Sunday into
Monday while the GFS keep the ridge over the area. After that
both are fairly similar through the middle of the week. Either
way impacts are minimal with weak onshore flow through the period
and marine layer likely confined to the coastal and lower valley
areas at most. At this point not seeing enough northerly flow to
kick low clouds out of sb south coast once they return later this
week but confidence pretty high that day to day changes will be
very minor and highs will be + - a couple degrees from normal.

More significant warming is possible towards the end of next week
as both models show the ridge strengthening and pressure
gradients still pretty light.

Aviation 20 0606z.

At 0545z, the marine inversion at klax was based at 1100 feet.

The top of the inversion was 2500 feet with a temperature of 23
degrees celsius.

Very good confidence in all tafs xcp for ksmx klax ksmo klgb where
there is a 20 percent chc of ifr CIGS 10z-16z.

Klax... Moderate confidence in taf. There is a 30% chance of ifr
conditions 10z-16z.

Kbur... High confidence in cavu taf.

Marine 19 735 pm.

For the outer waters, moderate to high confidence in current
forecast. Small craft advisory (sca) level winds will continue
through tonight. Conditions are expected to remain below sca
levels Thursday through Saturday. On Sunday and Monday, there
is a 50% chance of SCA level winds developing across pzz670 and
pzz673.

For the inner waters north of point sal, high confidence in
current forecast. Conditions are expected to remain below sca
levels through Monday.

For the inner waters south of point conception, moderate to high
confidence in current forecast. Across the western half of the
santa barbara channel, SCA level winds are likely through tonight.

Otherwise, conditions are expected to remain below SCA levels
through Monday.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 3 am pdt Thursday for
zones 650-670-673-676. (see laxmwwlox).

Hazard potential outlook (sat-wed)
No significant hazards expected.

Public... Mw rat
aviation... Rorke
marine... Rat
synopsis... Kj
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 26 mi31 min 59°F5 ft
PSLC1 - 9412110 - Port San Luis, CA 27 mi40 min 57°F 60°F1009.1 hPa
CPXC1 27 mi28 min Calm G 1 56°F 1009.1 hPa (-0.4)51°F
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 45 mi38 min NW 18 G 21 58°F 59°F6 ft1008 hPa (-0.6)

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Paso Robles Municipal Airport, CA9 mi35 minENE 310.00 miFair55°F44°F67%1009.6 hPa
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA22 mi32 minN 09.00 miFair51°F46°F86%1008.3 hPa

Wind History from PRB (wind in knots)
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Last 24hrNW5CalmNW3NW5NW4N3NW5N5CalmW5NW54NW4N4NW4N7N9NW10NW6
G15
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G27
CalmE3
1 day agoNW3N3N3NE3CalmCalmCalmN5NW7N7NW7--NW644SW8SW9W11NW12
G19
NW16NW11NW11NW7NW6
2 days agoCalmCalmCalmCalmCalmCalmCalmNW3N5NW54NW5Calm4S9SW12S13W8W9NW14NW12NW10NW8W5

Tide / Current Tables for Morro Beach, Estero Bay, 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 Morro Bay, California
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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 Southwest    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 Los Angeles/Oxnard, CA (4,6,7,8)
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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.