Monday, September25, 2017 L-36.com


Marine Weather and Tides
Costa Mesa, 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 6:41AMSunset 6:44PM Monday September 25, 2017 10:11 AM PDT (17:11 UTC) Moonrise 11:45AMMoonset 10:29PM Illumination 25% Phase: Waxing Crescent; Moon at 5 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- 820 Am Pdt Mon Sep 25 2017
Today..N winds 5 to 10 kt...becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 8 seconds.
Tonight..W winds 10 to 15 kt...becoming nw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 ft at 8 seconds.
Tue..N to ne winds 5 to 10 kt...becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 8 seconds.
Tue night..W winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 2 ft at 11 seconds.
Wed..NE winds 5 to 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 2 ft at 11 seconds.
Wed night..W winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 2 ft at 11 seconds.
Thu..Winds variable 10 kt or less...becoming nw winds 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft.
Fri..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft.
PZZ600 820 Am Pdt Mon Sep 25 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 pdt....A 1024 mb surface high was building into the great basin, while a 1010 mb thermal trough was along the southern california coast.

7 Day Forecast for Marine Location Near Costa Mesa, CA
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location: 33.63, -117.96     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 251701
afdsgx
area forecast discussion
national weather service san diego ca
1000 am pdt Mon sep 25 2017

Synopsis
High pressure over the great basin will bring weak to moderate
offshore flow to southern california through Wednesday. These santa
ana conditions bring warm days and comfortably cool nights. Winds
will be gusty at times in the mountains and foothills. Dry and
warmer Thursday and Friday with lighter offshore winds.

Discussion For extreme southwestern california including orange...

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

aside from a band of mid-level clouds over the san diego mountains
and eastern deserts, skies were clear this morning. The marine layer
was non-existent, and the closest low clouds were south of ensenada.

Santa ana conditions produced locally gusty winds in the mountains,
foothills and passes this morning, strongest san bernardino and
riverside counties, and the santa ana mountains where 10-20 mph
winds were gusting to 30-35 mph. Winds were lighter in san diego
county. The santa ana airmass has reached all the way to the coast
this morning where dewpoints were in the 30s and low 40s. Farther
inland the dewpoints were lower, ranging from the teens to the low
30s.

Both the ECMWF and GFS model are consistent with the santa ana
weather pattern this week. A longwave trough over the west will be
reinforced by a shortwave dropping south over nv tomorrow. This
shortwave will develop into a cut-off low over the lower colorado
river valley Wednesday. The trough then lifts NE on Thursday and
Friday with higher heights resulting in even hotter days to end the
week. The coastal areas may not see a significant temperature change
thu or Fri though, as the marine layer returns in response to a
coastal eddy that will form on Wednesday. Increasing boundary layer
rh will likely bring some marine layer clouds and patchy fog back
into coastal areas during that time.

Long range outlook for the weekend and beyond: the ECMWF and GFS are
at odds with each other. The GFS is forecasting a mean ridge pattern
through early next week, while the ECMWF is suggesting a trough for
stronger onshore flow and a hint of cooling. In either case,
precipitation is unlikely, and the main challenge will be if
temperatures will be average or above average.

Aviation
251630z... Mostly clear skies today and tonight. Local northeast
winds in foothills and below canyons into valleys. Expect greater
coverage of offshore winds around 15-25 kt in these areas through
20z today. Local mdt up downdrafts and llws west of the mtns. Kont
and ksbd are most likely TAF sites to be impacted by these winds and
llws. A similar offshore wind pattern will develop early Tuesday.

Marine
No hazardous marine weather is expected through Friday.

Fire weather
North-northeast winds in the mountains and foothills ranged from 10
to 20 mph this morning with gusts between 20-30 mph. A few of the
wind prone sites had peak gusts above 30 mph including fremont
canyon (43 mph at 7 am), crestline ridge (41 mph at 2 am), and big
black mountain (33 mph at 2 am). The winds will drop off this
afternoon and evening, then increase again Tuesday morning.

Strongest winds will be in and below the cajon pass and over the
santa ana mts canyons. The winds will be lighter over san diego
county. On Wednesday the winds will a little weaker. Afternoon
humidities will bottom out between 10-15% in these areas today and
Tuesday which will increase the wildfire risk, but limited areal
coverage of these conditions will be too small to require any fire
weather products.

The will be a small increase in rh Wednesday through Friday, but
overall it will remain fairly dry with afternoon humidities below
25%. It will be dry and very warm days through next weekend,
creating an elevated wildfire risk region-wide. Winds may be gusty
both off and onshore at times, but should be localized and not over
any extended period.

Skywarn
Skywarn activation will not be needed today.

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public fire weather... Moede
aviation marine... Pg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46253 12 mi41 min 68°F1 ft
PRJC1 14 mi41 min S 1.9 G 2.9
46256 14 mi49 min 66°F2 ft
AGXC1 16 mi41 min ESE 2.9 G 2.9 70°F 1011.5 hPa
PFXC1 16 mi41 min S 1.9 G 2.9 73°F
PFDC1 17 mi41 min Calm G 1
PSXC1 17 mi41 min Calm G 0
OHBC1 - 9410660 - Los Angeles, CA 18 mi41 min 66°F1011.5 hPa
BAXC1 18 mi41 min NNW 1 G 1
46222 - San Pedro, CA (092) 19 mi41 min 64°F1 ft
PXAC1 19 mi41 min Calm G 1
46221 - Santa Monica Bay, CA (028) 39 mi41 min 68°F2 ft
ICAC1 - 9410840 - Santa Monica Pier 39 mi41 min WSW 1.9 G 2.9 72°F 67°F1011.4 hPa
46242 - Camp Pendleton Nearshore, CA (043) 40 mi73 min 67°F2 ft
46224 - Oceanside Offshore, CA (045) 41 mi41 min 67°F2 ft

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, CA6 mi18 minSW 410.00 miA Few Clouds74°F51°F45%1010.9 hPa
Los Alamitos Army Airfield, CA12 mi73 minN 010.00 miA Few Clouds68°F41°F38%1011.4 hPa
Fullerton, Fullerton Municipal Airport, CA17 mi18 minN 010.00 miPartly Cloudy79°F42°F27%1010.7 hPa
Long Beach, Long Beach Airport, CA17 mi18 minN 010.00 miFair78°F33°F19%1011.2 hPa
Torrance, Zamperini Field Airport, CA23 mi24 minN 010.00 miA Few Clouds75°F35°F24%1011.5 hPa

Wind History from SNA (wind in knots)
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Last 24hrCalm3SW8S10SW9SW8SW10SW8W653CalmCalmCalmCalmCalmCalmCalmCalmCalmSW3CalmCalmSW4
1 day agoSW5SW7S9SW9S10S12S116SW4SW6SW3S3CalmS3E3CalmNE4CalmCalmCalmCalmCalm3Calm
2 days ago33SW9S10SW12
G17
SW9SW11W9W7W6W3CalmSW4CalmSE3CalmSE3E3CalmNE3E53CalmE4

Tide / Current Tables for Santa Ana River entrance (inside), California
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Santa Ana River entrance (inside)
Click for Map
Mon -- 01:39 AM PDT     1.99 feet High Tide
Mon -- 06:42 AM PDT     Sunrise
Mon -- 08:08 AM PDT     0.48 feet Low Tide
Mon -- 11:44 AM PDT     Moonrise
Mon -- 01:09 PM PDT     2.60 feet High Tide
Mon -- 06:43 PM PDT     Sunset
Mon -- 09:54 PM PDT     0.28 feet Low Tide
Mon -- 10:29 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.61.921.81.51.20.90.60.50.61.11.72.32.62.52.421.61.20.80.50.30.30.5

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
Click for Map
Mon -- 02:15 AM PDT     3.06 feet High Tide
Mon -- 06:42 AM PDT     Sunrise
Mon -- 07:28 AM PDT     1.45 feet Low Tide
Mon -- 11:45 AM PDT     Moonrise
Mon -- 01:42 PM PDT     3.99 feet High Tide
Mon -- 06:44 PM PDT     Sunset
Mon -- 09:18 PM PDT     0.82 feet Low Tide
Mon -- 10:30 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.42.8332.62.21.71.51.51.82.32.93.53.943.83.32.721.510.80.91.2

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 (13,3,4,5)
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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.