Tuesday, November20, 2018 L-36.com


Marine Weather and Tides
National City, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:22AMSunset 4:46PM Tuesday November 20, 2018 11:22 AM PST (19:22 UTC) Moonrise 4:30PMMoonset 4:35AM Illumination 95% Phase: Waxing Gibbous; Moon at 13 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- 230 Am Pst Tue Nov 20 2018
Today..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 11 seconds.
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 ft at 11 seconds.
Wed..Wind se 10 kt in the morning...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 10 seconds.
Wed night..Wind sw 10 kt. Wind waves 2 ft or less. SWell sw 2 ft at 10 seconds. Slight chance of rain in the evening, then rain likely after midnight.
Thanksgiving day..Wind W 10 to 15 kt. Wind waves 3 ft. SWell W 2 to 3 ft at 9 seconds. Chance of showers in the morning.
Thu night..Wind nw 10 to 15 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 3 to 4 ft.
Fri..Wind ne 10 kt...becoming W in the afternoon. Wind waves 2 ft or less. SWell W 3 to 5 ft.
Fri night..Wind nw 10 to 15 kt. Wind waves 4 ft. SWell W 3 to 5 ft. Slight chance of showers after midnight.
Sat..Wind E 10 kt...becoming W in the afternoon. Gusts to 15 kt. Wind waves 2 ft or less. SWell W 4 to 5 ft. Slight chance of showers in the morning.
Sat night..Wind variable less than 10 kt...becoming ne to 10 kt after midnight. Wind waves 2 ft or less. SWell W 3 to 4 ft.
PZZ700 230 Am Pst Tue Nov 20 2018
Synopsis for the far southern california coast.. At 2 am, a 1026 mb high was over western Montana and a 1014 mb low was 40 mi south of campo. Weak onshore flow through Thursday, followed by stronger onshore flow Friday and Saturday with gusts near 20 kt over the outer waters. Showers are possible at times Wednesday and Thursday.


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 201643
afdsgx
area forecast discussion
national weather service san diego ca
843 am pst Tue nov 20 2018

Synopsis
Weak low pressure moving inland today will bring slight cooling and
higher humidity. Another weakening pacific system will follow
Wednesday night into Thursday with some light rain and showers along
and west of the mountains. Another system could generate some light
shower activity, mainly for san diego county on Saturday morning,
followed by a return of dry offshore flow and warming early next
week.

Discussion For extreme southwestern california including orange...

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

skies have cleared nicely across socal this morning. However, there
were some patchy lower clouds visible in satellite imagery over the
ca bight. The 12z miramar sounding was stable with slight cooling
and steepening of the lapse rate. Winds in the lowest levels were
now weak westerly. Skies should be mostly sunny today and
temperatures mild. Easterly winds of 10 to 15 mph with higher gusts
continue well inland as the offshore sfc pressure gradients weaken.

No forecast changes at this time.

From previous discussion...

Short term (today through Thursday)
A weakening low pressure system will move inland across southern
california and northern baja today. It is not expected to have
much impact other than to bring some clouds and some cooling,
though an isolated sprinkle is not out of the question. Onshore
flow will continue for tonight and Wednesday with greater coverage
of night and morning coastal low clouds and fog possible along
with slow deepening of the marine layer.

For Wednesday night and Thursday, a trough of low pressure and the
associated cold front is expected to bring a period of showers
for much of southwestern california along and west of the
mountains and across the high deserts with much of the
precipitation falling from late Wednesday night into Thursday
morning as the front moves across the area. Some lighter and less
widespread precipitation may precede the front Wednesday evening
into Wednesday night.

Rainfall amounts are expected to range from one tenth to one
quarter inch near the orange county coast to one half to one inch
in the san bernardino county mountains with locally greater
amounts. Rainfall amounts are expected to be less farther south
with amounts in san diego county ranging from around one tenth
inch near the coast to one quarter to one third inch in the
mountains with locally greater amounts. In the deserts, the high
desert areas are expected to receive around one tenth inch with
less than one tench inch in the lower deserts. The snow level will
lower to around 6500 feet for late Wednesday night into Thursday
morning with a few inches of snowfall possible on the higher peaks
in san bernardino county, mostly above 7000 feet. The forecast
rainfall leans away from the drier GFS and toward a blend of the
qpf from wpc and local higher-resolution models.

Long term (Friday through Monday)
A trough of low pressure to the north moving across the pacific
northwest on Friday into the great basin on Saturday could bring a
a few mostly light showers along and west of the mountains late
Friday night into Saturday morning with the greatest coverage in
san diego county if they were to occur.

For Sunday and Monday, high pressure aloft near the california
coast and surface high pressure over the great basin are expected
to bring offshore flow and a warming trend with periods of weak of
possibly moderate strength gusty northeast winds in the mountains
and inland valleys and below passes and canyons. The forecast
during this period leans toward the ecmwf.

Aviation
201615z... Coast valleys... Expect patchy low clouds tonight,
generally sct-bkn at coastal TAF sites and extending around 10 mi
inland, mainly after 05z. Bases will be near 1,500-1,800 ft with
tops AOA 2,000 ft. Areas of vis 4-6 sm in br along the coast,
clearing after 16z. Mid- to high-level variable clouds tomorrow aoa
15,000 ft msl, becoming bkn by the afternoon.

Mountains deserts... Mostly clear with unrestricted visibility today.

Variable clouds AOA 15,000 ft msl will increase in coverage tomorrow.

Marine
No hazardous marine weather is expected through Thursday. Wind gusts
near 20 kt are possible Friday afternoon into Saturday, mainly near
san clemente island.

Fire weather
Weaker winds and increasing rh will diminish the wildfire threat
through Wednesday. For Wednesday through Thursday morning, periods of
wetting rain are possible. Continued moist on Saturday, then periods
of offshore flow with gusty northeast winds and lower inland
humidity are possible for Sunday and Monday. Intensity and timing
will be refined in subsequent forecasts, but for now, the event
looks moderate.

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

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public fire weather... 10 17
aviation marine... Rodriguez


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 4 mi41 min 1017.2 hPa
46235 7 mi23 min 65°F2 ft
TIXC1 - Tijuana River Reserve, CA 7 mi98 min SSW 5.1 68°F 1018 hPa59°F
LJPC1 - La Jolla, CA (073) 15 mi63 min Calm 1 ft
LJAC1 - 9410230 - La Jolla, CA 15 mi41 min NNW 1.9 G 2.9 67°F 65°F1017.3 hPa
46254 16 mi53 min 66°F1 ft
46232 - Point Loma South, CA (191) 19 mi23 min 67°F3 ft
46258 21 mi23 min 66°F3 ft
46225 - Torrey Pines Outer, CA (100) 23 mi23 min 67°F2 ft
46224 - Oceanside Offshore, CA (045) 40 mi23 min 65°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 mi91 minS 47.00 miPartly Cloudy66°F54°F65%1017.6 hPa
San Diego, San Diego International-Lindbergh Field, CA5 mi32 minSSW 68.00 miA Few Clouds67°F53°F61%1017.7 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA6 mi27 minW 68.00 miPartly Cloudy67°F55°F68%1017.5 hPa
San Diego, Brown Field Municipal Airport, CA10 mi30 minW 510.00 miPartly Cloudy67°F54°F63%1017 hPa
San Diego, Montgomery Field, CA11 mi30 minSW 47.00 miFair68°F51°F55%1017.1 hPa
Gillespie Field Airport, CA14 mi36 minN 010.00 miA Few Clouds68°F51°F56%1017.3 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA15 mi88 minVar 47.00 miA Few Clouds68°F52°F57%1017.2 hPa

Wind History from NZY (wind in knots)
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Last 24hrW7W7CalmW6W6CalmW3CalmCalmE3E4CalmCalmNE3CalmE4CalmCalmCalmCalmCalmSE3S4S6
1 day agoNW9NW11NW11NW12NW12NW7N3CalmCalmCalmCalm------SE3--Calm----N5CalmNW3W5W9
2 days agoW5W5W4W6W6W3CalmCalmE3CalmCalm----------Calm----CalmCalmCalmN4NW4

Tide / Current Tables for National City, San Diego Bay, California
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National City
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Tue -- 12:53 AM PST     0.92 feet Low Tide
Tue -- 03:35 AM PST     Moonset
Tue -- 06:22 AM PST     Sunrise
Tue -- 07:10 AM PST     6.27 feet High Tide
Tue -- 01:50 PM PST     0.20 feet Low Tide
Tue -- 03:30 PM PST     Moonrise
Tue -- 04:44 PM PST     Sunset
Tue -- 07:45 PM PST     4.83 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.20.91.32.23.54.85.86.365.23.92.51.30.40.20.61.62.83.94.74.84.43.52.5

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Tue -- 01:11 AM PST     0.00 knots Slack
Tue -- 03:35 AM PST     Moonset
Tue -- 04:29 AM PST     1.68 knots Max Flood
Tue -- 06:23 AM PST     Sunrise
Tue -- 07:28 AM PST     -0.00 knots Slack
Tue -- 10:39 AM PST     -2.08 knots Max Ebb
Tue -- 02:05 PM PST     0.00 knots Slack
Tue -- 03:30 PM PST     Moonrise
Tue -- 04:45 PM PST     Sunset
Tue -- 05:03 PM PST     1.49 knots Max Flood
Tue -- 07:56 PM PST     -0.00 knots Slack
Tue -- 10:48 PM PST     -1.60 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.9-0.20.61.31.61.61.20.4-0.5-1.4-2-2-1.7-0.9-0.10.71.31.51.30.8-0-0.9-1.4-1.6

Weather Map and Satellite Images
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wmap_P
GOES Local Image of Southwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Diego, CA (14,3,4,5)
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Ground Weather Radar Station San Diego, CA
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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.