Saturday, April29, 2017 L-36.com


Marine Weather and Tides
La Presa, 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 6:00AMSunset 7:30PM Saturday April 29, 2017 10:35 AM PDT (17:35 UTC) Moonrise 9:02AMMoonset 11:17PM 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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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 221 Am Pdt Sat Apr 29 2017
Today..Wind N 10 to 15 kt...becoming W in the afternoon. Gusts to 20 kt. Wind waves 2 ft or less... Becoming 3 ft in the afternoon. SWell W 4 to 7 ft at 10 seconds.
Tonight..Wind nw 10 to 15 kt with gusts to 20 kt in the evening...becoming variable less than 10 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 3 to 5 ft at 11 seconds.
Sun..Wind variable less than 10 kt...becoming W 10 to 15 kt with gusts to 20 kt in the afternoon. Wind waves 2 ft or less... Becoming 3 ft in the afternoon. Mixed swell W 2 to 3 ft at 11 seconds and sw 3 ft at 18 seconds.
Sun night..Wind W 10 to 15 kt with gusts to 20 kt... Becoming sw after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and sw 3 ft at 17 seconds.
Mon..Wind sw to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and sw 3 ft at 16 seconds.
Mon night..Wind variable less than 10 kt...becoming S 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and sw 3 ft.
Tue..Wind se 10 kt...becoming sw with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 to 4 ft and sw 3 ft.
Tue night..Wind variable less than 10 kt...becoming S 10 kt after midnight. Wind waves 2 ft or less. SWell W 2 to 4 ft.
Wed..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft. SWell sw 3 ft.
Wed night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 3 ft.
PZZ700 221 Am Pdt Sat Apr 29 2017
Synopsis for far southern california coast.. At 2 am...a 1026 mb high was over northwest nevada and a 1009 mb low was just south of san diego. Light northeast flow will continue this morning...then become weak to moderate northwest flow this afternoon. Weak onshore flow will follow Sunday through Wednesday.

7 Day Forecast for Marine Location Near La Presa, CA
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location: 32.72, -117     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
IIWC1 - 9410172 - USS Midway South Navy Pier, San Diego, CA 9 mi59 min WSW 1.9 G 2.9 68°F
SDBC1 - 9410170 - San Diego, CA 9 mi47 min 68°F1015.1 hPa
TIXC1 - Tijuana River Reserve, CA 12 mi110 min NW 2.9 66°F 1015 hPa52°F
LJPC1 - La Jolla, CA (073) 17 mi75 min Calm 4 ft
46254 17 mi47 min 62°F4 ft
LJAC1 - 9410230 - La Jolla, CA 17 mi47 min SW 2.9 G 2.9 68°F 56°F1014.4 hPa
46225 - Torrey Pines Outer, CA (100) 25 mi44 min 63°F5 ft
46232 - Point Loma South, CA (191) 26 mi54 min 63°F6 ft
46258 27 mi35 min 62°F5 ft
46224 - Oceanside Offshore, CA (045) 40 mi35 min 63°F4 ft
46242 - Camp Pendleton Nearshore, CA (043) 42 mi97 min 61°F4 ft

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Diego/El Cajon, Gillespie Field Airport, CA8 mi48 minVar 410.00 miClear75°F14°F10%1014.9 hPa
San Diego, San Diego International-Lindbergh Field, CA9 mi44 minVar 310.00 miFair75°F28°F18%1015.3 hPa
San Diego, Montgomery Field, CA10 mi42 minWSW 410.00 miFair76°F17°F11%1014.6 hPa
San Diego, Brown Field Municipal Airport, CA10 mi42 minN 010.00 miFair76°F19°F12%1014.5 hPa
San Diego, North Island, Naval Air Station, CA11 mi43 minSSW 410.00 miFair75°F24°F15%1014.7 hPa
Imperial Beach, Naval Auxiliary Landing Field, CA12 mi39 minNW 610.00 miFair74°F39°F28%1015 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA14 mi40 minN 310.00 miFair82°F10°F7%1014.3 hPa
Ramona, Ramona Airport, CA23 mi42 minENE 1010.00 miFair75°F14°F10%1014.4 hPa

Wind History from SEE (wind in knots)
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Last 24hrCalm6SW10SW10W10
G15
W13W11
G18
W10NW86CalmCalmCalmNW5NW5CalmW4CalmCalmCalmCalmCalmCalm4
1 day agoNW5--CalmW11--W9W9W1066CalmS4CalmCalmSE4SE4CalmN3NW3CalmCalmCalm----
2 days ago--5SW10SW10SW9SW10SW9SW106CalmCalmS6SW3SW3CalmS4S4CalmCalmE3CalmCalm56

Tide / Current Tables for National City, San Diego Bay, California
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National City
Click for Map
Sat -- 06:03 AM PDT     Sunrise
Sat -- 06:44 AM PDT     -1.21 feet Low Tide
Sat -- 09:02 AM PDT     Moonrise
Sat -- 01:06 PM PDT     4.33 feet High Tide
Sat -- 06:14 PM PDT     1.72 feet Low Tide
Sat -- 07:28 PM PDT     Sunset
Sat -- 11:17 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.764.731.3-0.1-1-1.2-0.60.51.83.144.34.13.52.82.11.71.92.53.64.75.7

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Sat -- 03:18 AM PDT     -2.46 knots Max Ebb
Sat -- 06:03 AM PDT     Sunrise
Sat -- 06:55 AM PDT     0.00 knots Slack
Sat -- 09:03 AM PDT     Moonrise
Sat -- 09:56 AM PDT     1.53 knots Max Flood
Sat -- 01:15 PM PDT     -0.00 knots Slack
Sat -- 03:46 PM PDT     -1.09 knots Max Ebb
Sat -- 06:19 PM PDT     0.00 knots Slack
Sat -- 07:28 PM PDT     Sunset
Sat -- 09:28 PM PDT     1.35 knots Max Flood
Sat -- 11:17 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.2-1.2-2-2.4-2.3-1.8-0.90.10.91.41.51.30.80.2-0.5-1-1.1-0.8-0.20.511.31.31

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 San Diego, 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.