Thursday, September21, 2017 L-36.com


Marine Weather and Tides
Newport Beach, CA

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:38AMSunset 6:49PM Thursday September 21, 2017 2:24 PM PDT (21:24 UTC) Moonrise 8:01AMMoonset 8:03PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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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PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 212 Pm Pdt Thu Sep 21 2017
.small craft advisory in effect through late tonight...
Tonight..Western portion...w winds 25 to 30 kt becoming nw 20 to 25 kt after midnight. Elsewhere...w winds 15 to 25 kt becoming variable 10 kt or less after midnight. Combined seas 3 to 5 ft dominant period 7 seconds.
Fri..SE winds 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 5 ft at 9 seconds.
Fri night..W winds 15 to 20 kt with gusts to 25 kt...becoming nw 10 to 15 kt after midnight. Strongest western portion. Wind waves 1 to 3 ft. W swell 3 to 5 ft at 10 seconds.
Sat..NE winds 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 4 ft at 10 seconds.
Sat night..W winds 10 to 15 kt...becoming nw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 10 seconds. Patchy fog after midnight.
Sun..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft. Patchy fog in the morning.
Sun night..W winds 10 to 15 kt...becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft.
Mon..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
Tue..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
PZZ600 212 Pm Pdt Thu Sep 21 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 21z...or 2 pm pdt...a weak frontal system will move over the coastal waters today. Winds will increase to moderate to strong by this afternoon and evening along with building short-period steep seas.

7 Day Forecast for Marine Location Near Balboa, CA
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location: 33.59, -117.91     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 211620
afdsgx
area forecast discussion
national weather service san diego ca
920 am pdt Thu sep 21 2017

Synopsis
A trough of low pressure will drop into southern california today
and linger through Saturday. Today it will bring cooler and
cloudier weather, some showers from the coast to the mountain
crests, and areas of strong winds in the mountains and deserts. As
the trough departs over the weekend, offshore flow will develop
to bring clear skies and a warming trend next week.

Discussion For extreme southwestern california including orange...

san diego... Western riverside and southwestern san bernardino
counties...

Update...

water vapor loop shows a trough digging south across california. A
narrow moisture axis ahead of this trough will move south across
southern california today. Pw on the morning san diego sounding
was 0.90 inches, up from 0.76 inches last evening. Pw could rise
to near 1 inch this afternoon, so nothing significant but enough
low level moisture below about 6,000 ft for shower development
ahead of the trough in upslope flow.

Light showers are developing and hi-res models show showers
continuing to develop and focusing along the coastal mountain
slopes as well as near the coast. Have adjusted pops upward and
made a slight uptick in qpf. Rainfall amounts will be light... Less
than a tenth of an inch, except 0.25-0.60 inches along the
coastal slopes with maxima along the san bernardino coastal
slopes. Crestline has received 0.12 inches of rain so far this
morning, the maximum in our service area so far.

Winds are on the increase out ahead of the trough. MAX gusts are
in the 35-45 mph range and expect this to continue. Wind prone
locales such as whitewater likely will hit 50+ mph this
afternoon early this evening before winds taper off tonight. A
wind advisory continues in effect from the mountain crests to the
desert floor. Patchy blowing dust and sand, creating restrictions
in visibility, will be found across the deserts.

Previous discussion (issued 230 am pdt Thu sep 21 2017)...

a big trough of low pressure, quite unseasonal for the last day
of summer, will drop into southern california today. Clouds have
already filled the coastal basin pretty much to the brim, that
is, to the mountain crests. A couple spots on the coastal slopes
have already begun to measure a few hundredths of rain. Later this
morning, a more organized band of legit showers will form along a
surface wind discontinuity over the ocean, meaning some uplift
will be generated along a line where southerly winds meet with
westerly winds. This band of showers will bring light rainfall:
below a tenth inch for most everywhere, but some foothill
locations such as near crestline could harvest a third inch or
more. Winds strengthen this afternoon and evening. Strongest winds
will occur through mountain passes and east into adjacent deserts
with top gusts over 45 mph. Temperatures will be in the low 70s
for most of the low elevations west of the mountains today, 15-20
degrees below average for the inland valleys. Residual moisture
and onshore flow will keep skies partly cloudy and temperatures
well below normal for Friday. A secondary shortwave within the big
trough over the west will slow down the trough such that it won't
really move out until Sunday. The surface flow will gradually go
offshore and that will help clear the area of clouds over the
weekend. Northeast winds will get started Sunday and appear each
morning through at least Tuesday. Local gusts below cajon pass and
in the santa ana mountains could exceed 40 mph each morning, but
overall this will not be a widespread or strong offshore event.

This fall weather comes right on schedule as if the atmosphere
knew it was time to start acting like fall. Temperatures will
climb each day next week, topping 90 in a few spots by Monday,
with 90s more common in the following days. Clouds will be hard
to come by next week. The clear skies and dry air will allow temps
to drop at night, providing some relief from the hot days.

Aviation
211530z... Coast valleys coastal slopes... Widespread stratus over the
coast, valleys, coastal slopes and mountain passes, with highly
variable bases of 2500-4000 ft msl, tops of 5000-6000 ft msl, areas
of -dz isol -shra producing local vis CIGS of 2-5 sm 1000-1500 ft
msl, and mountain obscuration of coastal slopes below 6000 ft msl,
will continue for the most part through 22 0000 utc, although cloud
coverage may become bkn-sct after 1800 utc with -dz -shra likely
ending by 2100 utc. 22 0000-1500 utc, bkn-ovc stratus filling the
coast, valleys and coastal slopes, with bases 2500-3500 ft msl, tops
4500-5000 ft msl and mountain obscuration of coastal slopes below
5000 ft msl.

Mountain ridges desert slopes deserts... Mostly skc with p6sm vis
through tonight. Through 1800 utc, west winds 15-25 kt with gusts 35
kt with mod-stg uddfs llws. Winds will strengthen after 1800 utc
with gusts to 45 kt possible below the passes, on desert slopes, and
near the desert foothills, resulting in stg uddfs llws as well as
surface wind gusts at kpsp and ktrm possibly reaching 35 kt at
times. Blowing dust & sand this afternoon and evening in the deserts.

Marine
A small craft advisory will be in effect for the outer coastal
waters this afternoon through late tonight as a trough of low
pressure creates moderate to strong onshore flow. Northwest wind
gusts of 25 kt are likely in the outer waters, while the inner
waters will see gusts mainly in the 15-20 kt rang (which is below
small craft advisory criteria). At the same time, there will also be
short-period seas of 4-7 ft. Although winds will decrease early
Friday morning, another increase in winds is expected late Friday
afternoon with wind gusts in the outer waters mainly around 20 kt.

Lighter winds and smaller seas are forecast over the weekend.

Skywarn
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

Sgx watches warnings advisories
Ca... Wind advisory until 1 am pdt Friday for apple and lucerne
valleys-coachella valley-riverside county mountains-san
bernardino county mountains-san diego county deserts-san
diego county mountains-san gorgonio pass near banning.

Pz... Small craft advisory until 1 am pdt Friday for waters from san
mateo point to the mexican border extending 30 to 60 nm out
including san clemente island.

Public... Gregoria (update) mm (prev discussion)
aviation marine... Brotherton


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46253 14 mi54 min 71°F4 ft
46256 17 mi62 min 65°F3 ft
PRJC1 18 mi54 min WSW 19 G 21
PFXC1 19 mi54 min WSW 9.9 G 12 72°F
PFDC1 20 mi60 min SSW 12 G 15
AGXC1 20 mi60 min WSW 15 G 19 67°F 1011 hPa
PSXC1 21 mi54 min W 12 G 16
OHBC1 - 9410660 - Los Angeles, CA 21 mi54 min 63°F1011 hPa
BAXC1 21 mi60 min WNW 12 G 16
PXAC1 22 mi60 min W 8.9 G 12
46222 - San Pedro, CA (092) 22 mi54 min 67°F4 ft
46242 - Camp Pendleton Nearshore, CA (043) 36 mi86 min 69°F3 ft
46224 - Oceanside Offshore, CA (045) 37 mi54 min 69°F3 ft
46221 - Santa Monica Bay, CA (028) 43 mi54 min 71°F4 ft
ICAC1 - 9410840 - Santa Monica Pier 43 mi54 min WSW 15 G 17 65°F 68°F1010.4 hPa

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Wayne-Orange County Airport, CA7 mi31 minWSW 8 G 1510.00 miMostly Cloudy70°F57°F64%1010.4 hPa
Los Alamitos Army Airfield, CA16 mi86 minWSW 1310.00 miMostly Cloudy74°F58°F59%1010.4 hPa
Fullerton, Fullerton Municipal Airport, CA20 mi31 minWSW 810.00 miOvercast71°F55°F59%1009.7 hPa
Long Beach, Long Beach Airport, CA21 mi31 minW 1110.00 miPartly Cloudy72°F50°F46%1010.1 hPa

Wind History from SNA (wind in knots)
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S11SW10SW8SW5SW6SW6SW4S6SE8SE6SE6SE5SE3S5S4S7SE10SE8SE8S10SW11SW8
1 day agoSW10S11S86SW9W3W5SW3CalmW3CalmSE3E4SE7SE6SE4SE3CalmSE6SE6SW7SW9SW8SW10
2 days agoSW8W7SW86SW8S7SW6NW4W3CalmCalmW4NE33SE3SE6SE5SE5SE5SE5SE7S7S9
G15
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Tide / Current Tables for Balboa Pier, Newport Beach, California
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Balboa Pier
Click for Map
Thu -- 04:25 AM PDT     0.41 feet Low Tide
Thu -- 06:39 AM PDT     Sunrise
Thu -- 08:00 AM PDT     Moonrise
Thu -- 10:28 AM PDT     5.36 feet High Tide
Thu -- 04:47 PM PDT     0.63 feet Low Tide
Thu -- 06:49 PM PDT     Sunset
Thu -- 08:03 PM PDT     Moonset
Thu -- 10:44 PM PDT     5.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.43.2210.50.51.22.33.64.75.35.34.73.72.51.50.80.61.123.14.24.85

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
Click for Map
Thu -- 05:35 AM PDT     0.26 feet Low Tide
Thu -- 06:39 AM PDT     Sunrise
Thu -- 08:01 AM PDT     Moonrise
Thu -- 11:36 AM PDT     4.62 feet High Tide
Thu -- 05:59 PM PDT     0.37 feet Low Tide
Thu -- 06:49 PM PDT     Sunset
Thu -- 08:03 PM PDT     Moonset
Thu -- 11:51 PM PDT     4.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.53.92.91.80.90.40.30.81.82.93.94.54.64.13.32.31.30.60.40.71.42.43.44.1

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

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for San Diego, CA (17,4,5,8)
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Ground Weather Radar Station Santa Ana Mtns, 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.