Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Midway City, 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 6:02AMSunset 7:35PM Saturday April 29, 2017 10:38 AM PDT (17:38 UTC) Moonrise 9:04AMMoonset 11:23PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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- 905 Am Pdt Sat Apr 29 2017
.small craft advisory in effect through this evening...
Today..NE winds 15 to 25 kt...becoming W in the afternoon. Combined seas 4 to 6 ft dominant period 10 seconds.
Tonight..W winds 15 to 25 kt...becoming nw 5 to 10 kt after midnight. Combined seas 4 to 5 ft dominant period 11 seconds.
Sun..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 2 ft at 18 seconds.
Sun night..W winds 10 to 15 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 3 ft at 9 seconds and sw 2 ft at 17 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 4 ft at 9 seconds. Patchy fog in the morning.
Mon night..SW winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 3 to 4 ft at 9 seconds. Patchy fog after midnight.
Tue..S winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 4 ft. Patchy fog.
Wed..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft. Patchy fog.
PZZ600 905 Am Pdt Sat Apr 29 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 1025 mb surface high was over nevada and will weaken by this evening. Meanwhile a 1030 mb surface high was centered 800 nm northwest of point conception and will change little through at least Tuesday.

7 Day Forecast for Marine Location Near Midway City, CA
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location: 33.74, -118     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 291530
afdsgx
area forecast discussion
national weather service san diego ca
830 am pdt Sat apr 29 2017

Synopsis
Strong northeast winds this morning below the canyons and passes
will weaken later in the day as upper-level support weakens, and a
sea breeze develops. The offshore flow will result in a much warmer
day west of the mountains today, as the marine air is driven
offshore. Weak onshore flow will return on Sunday, bringing the
marine layer back to coastal areas late. A coastal eddy should help
to reinforce the marine air along the coast on Monday, for more
cooling. Continued sunny and warm inland for the coming week under
high pressure aloft, while onshore flow keeps the coastal areas
seasonal with periods of nocturnal low clouds and fog.

Discussion For extreme southwestern california including orange...

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

skies were completely clear this morning across the entire CWA and
adjacent coastal waters. The 12z miramar sounding was very dry with
a sfc-based inversion and NE winds from the sfc to about 4k ft msl.

The NE wind layer saw a temp rise of around 4 degrees c with a max
increase of 7 degrees c near 1750 ft. Surface pressure gradients
were offshore about 8 mbs from SW nv, and 2 mbs from the lower
deserts to ksan. Through 8 am pdt... Peak NE wind gusts were 70 mph
at fremont canyon, and 65 mph at pleasants peak, both in the santa
ana mts. Sill hill, in san diego county was closing in on 50 mph.

A high wind warning remains in effect through noon pdt for portions
of the inland empire, santa ana mts, and orange county, with a wind
advisory for the san diego county mts/deserts. No changes to the
forecast this morning.

From previous discussion...

a slow moving low pressure system was over the central and southern
rockies early this morning with high pressure aloft off the
california coast. Surface high pressure over the great basin will
bring strong gusty northeast winds near the coastal slopes of the
mountains and below passes and canyons. The strongest and most
widespread winds are expected after sunrise... With winds diminishing
during the late morning into the afternoon. Strongest gusts early
this morning have been to around 60 mph along the coastal slopes of
the santa ana mountains.

The offshore flow combined with the high pressure aloft off the
california coast will bring much warmer high temperatures today
for coastal and western valley areas with warmest high
temperatures today of around 90 in some inland coastal areas.

High pressure aloft off the california coast will weaken some for
Sunday and Monday with weak onshore flow returning. High
temperatures near the coast will bring to cool as areas farther
inland will continue to warm.

The marine layer is expected to return late Sunday night and
Monday with cooling spreading into the valleys early next week.

Toward the end of next week... A trough of los pressure developing
near the west coast will bring stronger onshore flow with greater
cooling spreading inland.

Aviation
291530z... Northeast winds gusting 35-50 kt will continue this
morning along coastal mountain slopes and through mountain passes
and into adjacent valleys. Portions of orange county coastal areas
will be exposed to the strong winds, as well. Stg-svr up/downdrafts
and llws are likely through the afternoon just west of the
mountains, likely impacting kont, ksbd, ksna and to a lesser extent
kcrq. Winds will gradually weaken through the afternoon and evening.

Marine
Northwest winds gusting near 20 kt will develop over the coastal
waters this afternoon through early tonight. Otherwise, no hazardous
marine conditions are expected through Wednesday.

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

Sgx watches/warnings/advisories
Ca... Wind advisory until noon pdt today for riverside county
mountains-san diego county mountains-san diego county
valleys-san gorgonio pass near banning.

High wind warning until noon pdt today for orange county coastal
areas-orange county inland areas-san bernardino county
mountains-san bernardino and riverside county valleys-the
inland empire-santa ana mountains and foothills.

Pz... None.

Public... Jad/17
aviation/marine... Pg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 10 mi51 min ENE 13 G 20
46256 11 mi47 min 58°F3 ft
PFXC1 11 mi51 min NE 2.9 G 8 78°F
PSXC1 12 mi51 min NE 5.1 G 8.9
AGXC1 13 mi51 min NE 11 G 12 72°F 1016 hPa
PFDC1 13 mi51 min NE 9.9 G 12
BAXC1 13 mi51 min ENE 7 G 12
PXAC1 14 mi57 min E 5.1 G 7
OHBC1 - 9410660 - Los Angeles, CA 15 mi51 min 60°F1016.1 hPa
46253 15 mi39 min 56°F4 ft
46222 - San Pedro, CA (092) 19 mi50 min 57°F5 ft
ICAC1 - 9410840 - Santa Monica Pier 32 mi57 min SE 6 G 8.9 67°F 52°F1016.2 hPa
46221 - Santa Monica Bay, CA (028) 34 mi39 min 57°F4 ft
46242 - Camp Pendleton Nearshore, CA (043) 47 mi101 min 61°F4 ft
46224 - Oceanside Offshore, CA (045) 48 mi39 min 63°F4 ft

Wind History for Los Angeles Pier J, CA
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S10
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G14
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G22
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G22
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G11
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NE23
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G27
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S4
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SW7
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W14
G18
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G17
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SW12
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NE2
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Alamitos U. S. Army Airfield, CA4 mi1.7 hrsE 14 G 1910.00 miFair74°F19°F12%1015.8 hPa
Santa Ana, John Wayne Airport-Orange County Airport, CA8 mi46 minENE 16 G 2610.00 miFair78°F12°F8%1015.4 hPa
Fullerton, Fullerton Municipal Airport, CA9 mi46 minENE 12 G 2110.00 miFair78°F15°F9%1015.5 hPa
Long Beach, Long Beach Airport, CA10 mi46 minNNE 7 G 1710.00 miFair78°F8°F7%1015.7 hPa
Torrance, Zamperini Field Airport, CA18 mi49 minVar 310.00 miClear73°F17°F12%1016.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA22 mi46 minN 010.00 miFair74°F8°F8%1016.1 hPa
Los Angeles / USC Campus Downtown, CA24 mi52 minN 010.00 miFair77°F19°F11%1015.4 hPa
El Monte, CA24 mi54 minN 010.00 miFair77°F15°F10%1016.6 hPa
Corona Airport, CA24 mi43 minNE 16 G 2510.00 miFair75°F19°F12%1017.4 hPa

Wind History from SLI (wind in knots)
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Last 24hrS7S8S10S7SW13
G21
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G23
W18
G25
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G22
W12NW7NW9NW6NW4N5NE18
G28
NE22
G28
NE20
G29
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G29
NE17
G29
E9E16
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NE12
G25
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1 day agoS5S8S9S9S5SW6W13
G17
W11
G17
W8W12SW8CalmSE8E8SE6SW3E3S4S4E3E2SE4S5Calm
2 days agoS7SW10S13
G17
S9S12S9S11S8S7S7S5S7S9
G17
S8S3S3S8--CalmSE3S5S4SE8S4

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Sat -- 12:20 AM PDT     5.12 feet High Tide
Sat -- 06:05 AM PDT     Sunrise
Sat -- 07:38 AM PDT     -0.60 feet Low Tide
Sat -- 09:04 AM PDT     Moonrise
Sat -- 01:58 PM PDT     3.21 feet High Tide
Sat -- 07:06 PM PDT     1.09 feet Low Tide
Sat -- 07:34 PM PDT     Sunset
Sat -- 11:23 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.154.43.42.210.1-0.5-0.6-0.10.71.62.433.232.51.91.31.11.31.92.83.7

Tide / Current Tables for Santa Ana River entrance (inside), California
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Santa Ana River entrance (inside)
Click for Map
Sat -- 06:04 AM PDT     Sunrise
Sat -- 08:16 AM PDT     -0.20 feet Low Tide
Sat -- 09:04 AM PDT     Moonrise
Sat -- 01:25 PM PDT     2.08 feet High Tide
Sat -- 07:33 PM PDT     Sunset
Sat -- 07:44 PM PDT     0.37 feet Low Tide
Sat -- 11:22 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.33.12.72.21.50.90.4-0-0.2-0.10.41.11.7221.81.510.70.40.40.81.52.4

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.