Tuesday, October17, 2017 L-36.com


Marine Weather and Tides
National City, 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 6:53AMSunset 6:13PM Tuesday October 17, 2017 4:24 AM PDT (11:24 UTC) Moonrise 4:47AMMoonset 5:24PM Illumination 9% Phase: Waning Crescent; Moon at 27 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- 146 Am Pdt Tue Oct 17 2017
Today..Wind variable less than 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 10 seconds and sw 2 to 3 ft at 18 seconds.
Tonight..Wind nw to 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 6 seconds and sw 3 ft at 17 seconds.
Wed..Wind variable less than 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 6 seconds and sw 3 to 4 ft at 16 seconds.
Wed night..Wind W to 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 6 seconds and sw 3 ft at 15 seconds.
Thu..Wind sw to 10 kt...becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 6 seconds and sw 3 ft at 15 seconds.
Thu night..Wind W 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 to 3 ft.
Fri..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 2 ft or less...becoming 3 to 4 ft in the afternoon. Mixed swell W 2 to 4 ft and sw 2 ft.
Fri night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 3 to 4 ft in the evening...becoming 2 ft or less. Mixed swell W 3 to 5 ft and S 1 to 2 ft.
Sat..Wind E to 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft and sw 1 ft.
Sat night..Wind nw 10 kt with gusts to 15 kt...becoming ne after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and S 1 to 2 ft.
PZZ700 146 Am Pdt Tue Oct 17 2017
Synopsis for the far southern california coast..At 1 am, a 1036 mb high was over eastern oregon and a 1013 mb low was over the inland empire. Light to moderate northwest winds will continue this week. A low pressure system could bring wind gusts of 20 kt or more on Friday. An elevated short period northwest swell could bring rough seas Friday and Saturday.

7 Day Forecast for Marine Location Near National City, CA
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location: 32.67, -117.12     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 170945
afdsgx
area forecast discussion
national weather service san diego ca
245 am pdt Tue oct 17 2017

Synopsis
Today will be rather hot again, but a cooling trend will get
started. Low pressure will bring onshore flow and cooler air into
the region through Friday. The marine layer and coastal low clouds
will redevelop each night and morning, along with some winds in
the mountains and deserts. On Saturday the flow turns offshore as
high pressure builds. That will bring santa ana conditions, clear
skies and hot weather next week.

Discussion For extreme southwestern california including orange...

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

high pressure aloft continues to grip our area and maintain the
dry interior air over our area. To our west there is a weak cutoff
low that is drawing up some high level moisture that will manifest
itself as thickening high clouds across southern california
today into Wednesday. For two reasons the cooling trend will get
started today. Offshore flow drops off and allows the onshore
flow to spread more marine air farther inland. And we'll have more
high clouds occasionally filtering out the sunshine. This blob of
clouds will track through california Wednesday and there is some
instability in the blob. Elevated convection is expected, but any
showers at 10-15 thousand feet will try dropping rain through the
really dry air below that, and evaporate. That's why we are only
carrying slight chances of precip in the mountains (less dry air
to fall through before hitting the ground) where a few sprinkles
or light showers are possible. Coastal clouds don't seem to get
the message to form until Wednesday night and Thursday. That's
when a big low pressure trough moving through the northwest will
increase the onshore flow and generate a pretty decent coastal
eddy. The coastal clouds never really establish a foothold
Thursday before the cooler air aloft appears to erode whatever
marine inversion can get established. All that means we'll have
partly cloudy skies Thursday into Saturday. The trough will boost
winds through mountains and into deserts, particularly Friday.

Temperatures will drop well below average on Friday. The trough
axis gets through our region Saturday morning and flow turns
offshore over the weekend while high pressure aloft builds quite a
bit. Yes, another santa ana event, complete with the hot and dry
weather. Right now it doesn't appear to be too windy, but the
usual foothills and adjacent valleys will get some locally strong
winds that for now appear strongest on Monday and Tuesday.

Temperatures will head back into the 90s and approach or hit the
century mark on those days for many spots west of the mountains.

Aviation
170910z... Few-sct clouds AOA fl200 and unrestricted vis through
Tuesday evening.

Marine
No hazardous marine weather is expected through Thursday. Winds will
increase to around 20 kt or more in the outer waters on Friday.

Beaches
A south southwest swell from 200 degrees will peak today-Wednesday
at 3-4 ft 16-18 seconds. This will produce 3-6 ft surf with sets to
7 ft north of del mar. Highest surf will occur along southwest
facing beaches. Strong rip and longshore currents will accompany the
elevated surf. Swell and surf will begin to lower on Thursday. A
beach hazard statement is in effect for elevated surf and strong rip
currents today and Wednesday.

Fire weather
Very warm and dry weather will continue today, but with light
winds. A very slight chance of an isolated shower or thunderstorm
Wednesday is forecast for the mountains, with a very small chance
of isolated dry lightning strikes. Cooler and more humid onshore
flow will take control Thursday and Friday. Gusty westerly onshore
winds in mountains and deserts Thursday and Friday. On Saturday
and Sunday flow turns offshore and lower elevations heat up. Dry
santa ana conditions are forecast for west of the mountains,
strongest on Monday and Tuesday.

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

Sgx watches warnings advisories
Ca... Beach hazards statement from 6 am pdt this morning through
Wednesday evening for orange county coastal areas-san diego
county coastal areas.

Pz... None.

Public fire... Mm
aviation marine beaches... Pg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 4 mi54 min 74°F1015.1 hPa
TIXC1 - Tijuana River Reserve, CA 7 mi99 min NE 1.9 65°F 1016 hPa40°F
LJPC1 - La Jolla, CA (073) 15 mi64 min Calm 2 ft
LJAC1 - 9410230 - La Jolla, CA 15 mi54 min NE 1 G 1 69°F 68°F1014 hPa
46254 16 mi66 min 69°F2 ft
46232 - Point Loma South, CA (191) 19 mi73 min 70°F4 ft
46258 21 mi54 min 71°F3 ft
46225 - Torrey Pines Outer, CA (100) 23 mi63 min 69°F3 ft
46224 - Oceanside Offshore, CA (045) 40 mi54 min 69°F2 ft
46242 - Camp Pendleton Nearshore, CA (043) 42 mi86 min 67°F2 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, North Island, Naval Air Station, CA5 mi32 minN 310.00 miPartly Cloudy70°F50°F49%1014.1 hPa
San Diego, San Diego International-Lindbergh Field, CA5 mi33 minN 310.00 miMostly Cloudy69°F39°F33%1014.8 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA6 mi28 minNE 610.00 miFair66°F39°F37%1014.3 hPa
San Diego, Brown Field Municipal Airport, CA10 mi31 minSE 610.00 miFair67°F36°F32%1014.3 hPa
San Diego, Montgomery Field, CA11 mi31 minN 010.00 miFair74°F30°F20%1014.1 hPa
Gillespie Field Airport, CA14 mi29 minN 010.00 miFair63°F33°F34%1014.9 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA15 mi29 minENE 610.00 miFair70°F30°F23%1014 hPa

Wind History from NZY (wind in knots)
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Last 24hr--CalmNW4CalmCalmCalmNW5N8NW9NW13NW13NW15NW14N11NW8N5N4NW3CalmCalmNE6N3N3N3
1 day agoN6N3CalmCalmCalmCalmNW3N4NW8W9NW7NW6NW4NW6NW4N3CalmCalm------------
2 days agoCalmN5NW3N3CalmCalmW4W6NW6NW7NW10W8NW9NW8NW6NW5N4N5NW6N5N3N4N5N6

Tide / Current Tables for National City, San Diego Bay, California
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National City
Click for Map
Tue -- 02:34 AM PDT     -0.06 feet Low Tide
Tue -- 04:47 AM PDT     Moonrise
Tue -- 06:54 AM PDT     Sunrise
Tue -- 08:47 AM PDT     6.31 feet High Tide
Tue -- 03:02 PM PDT     0.39 feet Low Tide
Tue -- 05:24 PM PDT     Moonset
Tue -- 06:12 PM PDT     Sunset
Tue -- 08:56 PM PDT     5.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.10.80.100.723.65.16.16.35.84.63.21.80.80.40.81.83.24.65.65.95.54.5

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
Click for Map
Tue -- 02:56 AM PDT     0.00 knots Slack
Tue -- 04:47 AM PDT     Moonrise
Tue -- 06:06 AM PDT     1.97 knots Max Flood
Tue -- 06:54 AM PDT     Sunrise
Tue -- 09:02 AM PDT     -0.00 knots Slack
Tue -- 12:03 PM PDT     -2.03 knots Max Ebb
Tue -- 03:19 PM PDT     0.00 knots Slack
Tue -- 05:24 PM PDT     Moonset
Tue -- 06:12 PM PDT     Sunset
Tue -- 06:22 PM PDT     1.79 knots Max Flood
Tue -- 09:12 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-2.1-1.7-0.90.111.721.81.10.1-1-1.7-2-1.8-1.2-0.30.61.41.81.71.10.2-0.8-1.6

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 (7,2,3,4)
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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.