Saturday, December16, 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 6:43AMSunset 4:46PM Saturday December 16, 2017 6:56 AM PST (14:56 UTC) Moonrise 6:12AMMoonset 5:00PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 228 Am Pst Sat Dec 16 2017
Today..Wind sw 10 kt with gusts to 15 kt... Becoming S to 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 3 to 5 ft at 15 seconds. Slight chance of showers in the afternoon.
Tonight..Wind ne to 10 kt. Gusts to 15 kt after midnight. Wind waves 2 ft or less. SWell W 4 to 6 ft at 12 seconds.
Sun..Wind ne 10 to 15 kt...becoming nw in the afternoon. Wind waves 3 ft in the morning...becoming 2 ft or less. SWell W 2 to 5 ft at 13 seconds.
Sun night..Wind ne 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 12 seconds.
Mon..Wind E to 10 kt...becoming W in the afternoon. Gusts to 15 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 12 seconds.
Mon night..Wind nw 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft.
Tue..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 to 2 ft.
Tue night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft.
Wed..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 to 2 ft.
Wed night..Wind W 10 kt. Gusts to 15 kt in the evening. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 1 to 4 ft.
PZZ700 228 Am Pst Sat Dec 16 2017
Synopsis for the far southern california coast.. At 2 am, a 1035 mb high was 500 nm west of eureka, california, and a 1007 mb low was near death valley. Onshore flow will occur today under a trough of low pressure, but then offshore flow will return tonight through Tuesday except for northwest winds during the afternoons. Weak onshore flow will return Wednesday.

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 161208
afdsgx
area forecast discussion
national weather service san diego ca
408 am pst Sat dec 16 2017

Synopsis
A trough of low pressure moving through southern california today
will bring stronger onshore flow with cooling... More clouds... And with
gusty southwest to west winds in the mountains and deserts.

Surface high pressure over the great basin will bring offshore
flow with drying and with gusty north to northeast winds and lower
inland humidities for Sunday into Monday with the strongest winds
on Sunday. For Wednesday and Thursday... Another low pressure
system moving southeastward through the great basin will bring
strong onshore flow with cooling... More clouds... And strong gusty
west winds in the mountains and deserts. Moderate to strong
offshore flow may follow for late Thursday into Friday with
periods of moderate to strong northeast winds.

Discussion For extreme southwestern california including orange...

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

Short term (today through Monday)
A trough of low pressure is moving through southern california
early this morning. This will bring stronger onshore flow with
significant cooling... More clouds... And gusty southwest to west
winds in the mountains and deserts. For inland coastal areas... The
valleys... And the mountains... High temperatures today will be 15
to 20 degrees cooler than on Friday... 10 to 15 degrees cooler
towards the coast and in the upper deserts... And 5 to 10 degrees
cooler in the lower deserts. A brief return of lower level
moisture will bring slight chances for light showers... Mainly for
central and southern coastal areas of san diego for late morning
into the afternoon with any rainfall a few hundredths of an inch
at most.

The flow will turn offshore for tonight and Sunday with stronger
and gusty north to northeast winds developing along and below
coastal mountain slopes and below passes and canyons for portions
of san bernardino... Riverside... And orange counties for late
tonight into Sunday morning with gusts to 50 mph and isolated
gusts to 60 mph. Weaker northeast winds will spread into the
mountains and inland valleys in san diego county on Sunday. Winds
will weaken and become more localized for Sunday night and
Monday. High temperatures for coastal and valley areas will warm
on Sunday while the mountains and deserts continue to cool. The
warming will spread inland on Monday.

Long term (Tuesday through Friday)
Warmer with weaker winds for Tuesday with weakening high pressure
aloft over california. A low pressure system off the pacific
northwest coast on Tuesday... Will move into the pacific northwest
early Wednesday... And into the great basin late Wednesday and
Wednesday night. For southern california... This will bring
stronger onshore flow with cooling for Wednesday into
Thursday... A possible return of the marine layer with night and
morning coastal low clouds and fog... And strong gusty west winds
in the mountains and deserts for Wednesday and Wednesday night.

For Thursday into Friday... Upper level low pressure to the east
and surface high pressure over the great basin will bring periods
of moderate to strong northeast winds. There remain differences
with the location and strength of that upper level low pressure
among the global models along with the duration and strength of
the offshore flow. The ECMWF is weaker with the offshore flow
along with lesser duration of the offshore flow. The ECMWF also
advertises deamplification of the high amplitude pattern across
the mid latitudes of the eastern pacific and north america for
early the week of christmas. In between for next weekend... The
differences across southern california are significant with some
global models maintaining closed upper level low pressure over
the southwest states and the ECMWF developing upper level high
pressure from the subtropical eastern pacific into california.

Aviation
161100z... Areas of stratus will develop in coastal areas and extend
into the valleys and foothills of san diego county starting 13z-15z
today. There is also a slight chance of -shra from the coast to the
foothills in san diego county. Bases will be 1200-2500 ft msl with
tops to 4000-5000 ft msl. Clearing will occur 18z-20z in orange
county but might not occur until 03z-05z this evening in parts of
san diego county. After 05z tonight, most areas will be clear, but
locally gusty northeast winds 15-30 knots with gusts 35-45 knots
will develop along southwest mountain slopes and through below
passes and canyons, continuing Monday morning. Lighter winds will
occur in san diego county.

Marine
Combined seas could reach 8-9 feet in the outer waters tonight, just
below small craft advisory criteria, due to a wnw swell around 12
seconds. Otherwise, no hazardous marine weather is expected through
Wednesday.

Fire weather
Surface high pressure over the great basin will bring a period
of offshore flow for late tonight into Monday. Gusty north to
northeast winds will strengthen for late tonight across portions
of san bernardino... Riverside... And orange counties and spread
southward into san diego county on Sunday. The strongest winds are
expected across portions of san bernardino... Riverside... And
orange counties for late tonight through Sunday morning with
lowest humidities for late Sunday morning through Sunday
afternoon. Winds are not expected to be as strong for san diego
county with stronger winds and lower humidities mostly confined to
the coastal slopes of the mountains and the inland valleys. Winds
will weaken for Sunday night and Monday.

Another round of moderate to strong and gusty northeast winds is
possible for Thursday into Friday with low inland humidities.

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

Sgx watches warnings advisories
Ca... Fire weather watch from Sunday morning through Sunday evening
for san diego county inland valleys-san diego county
mountains-including the palomar and descanso ranger
districts of the cleveland national forest.

Red flag warning from 8 am to 8 pm pst Sunday for orange county
coastal areas-orange county inland areas-riverside county
mountains-including the san jacinto ranger district of the
san bernardino national forest-san bernardino county
mountains-including the mountain top and front country
ranger districts of the san bernardino national forest-san
bernardino and riverside county valleys -the inland empire-
san gorgonio pass near banning-santa ana mountains-
including the trabuco ranger district of the cleveland
national forest.

Pz... None.

Public fire weather... 17
aviation marine... Maxwell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 4 mi45 min 64°F1009.1 hPa
TIXC1 - Tijuana River Reserve, CA 7 mi72 min Calm 51°F 1010 hPa28°F
LJPC1 - La Jolla, CA (073) 15 mi37 min ESE 6 2 ft
LJAC1 - 9410230 - La Jolla, CA 15 mi51 min ESE 8 G 8.9 57°F 66°F1008.1 hPa
46254 16 mi39 min 62°F2 ft
46232 - Point Loma South, CA (191) 19 mi46 min 63°F5 ft
46258 21 mi27 min 62°F4 ft
46225 - Torrey Pines Outer, CA (100) 23 mi36 min 62°F3 ft
46224 - Oceanside Offshore, CA (045) 40 mi27 min 62°F3 ft
46242 - Camp Pendleton Nearshore, CA (043) 42 mi89 min 62°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 mi2.1 hrsESE 610.00 miFair54°F28°F37%1008.5 hPa
San Diego, San Diego International-Lindbergh Field, CA5 mi66 minN 010.00 miPartly Cloudy55°F28°F36%1009.2 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA6 mi61 minENE 37.00 miOvercast52°F26°F37%1009.1 hPa
San Diego, Brown Field Municipal Airport, CA10 mi64 minS 510.00 miFair51°F16°F25%1008.7 hPa
San Diego, Montgomery Field, CA11 mi64 minSE 410.00 miMostly Cloudy53°F19°F26%1008.6 hPa
Gillespie Field Airport, CA14 mi82 minWNW 410.00 miFair43°F21°F42%1008.8 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA15 mi62 minE 610.00 miPartly Cloudy53°F21°F28%1008 hPa

Wind History from NZY (wind in knots)
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Last 24hr--4CalmCalmCalmN3NW9NW7NW10NW10NW9N9N8CalmCalmNW3E3CalmCalmCalmCalmCalmCalmE6
1 day agoCalmNE3CalmCalmCalmCalmS4NW7N9NW7NW8NW9NW7CalmNE4CalmCalmNW4NE3N4SE5N3SE3N7
2 days agoNE3CalmCalmCalmCalmS3S3S6S4NW6NW3CalmCalmCalmSE5S6SE3CalmCalmCalmSE3N3W3Calm

Tide / Current Tables for National City, San Diego Bay, California
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National City
Click for Map
Sat -- 01:38 AM PST     1.68 feet Low Tide
Sat -- 05:11 AM PST     Moonrise
Sat -- 06:44 AM PST     Sunrise
Sat -- 07:49 AM PST     6.63 feet High Tide
Sat -- 02:55 PM PST     -0.55 feet Low Tide
Sat -- 04:00 PM PST     Moonset
Sat -- 04:44 PM PST     Sunset
Sat -- 09:06 PM PST     4.35 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.31.81.72.23.24.45.66.46.66.25.13.620.7-0.3-0.5-0.20.823.244.34.13.6

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Sat -- 01:54 AM PST     0.00 knots Slack
Sat -- 05:11 AM PST     Moonrise
Sat -- 05:17 AM PST     1.55 knots Max Flood
Sat -- 06:44 AM PST     Sunrise
Sat -- 08:07 AM PST     -0.00 knots Slack
Sat -- 11:32 AM PST     -2.26 knots Max Ebb
Sat -- 03:18 PM PST     0.00 knots Slack
Sat -- 04:00 PM PST     Moonset
Sat -- 04:44 PM PST     Sunset
Sat -- 06:16 PM PST     1.47 knots Max Flood
Sat -- 09:15 PM PST     -0.00 knots Slack
Sat -- 11:44 PM PST     -1.10 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1-0.60.10.71.31.51.40.90.1-0.9-1.7-2.2-2.2-1.8-1.1-0.20.61.21.51.40.90.2-0.5-1

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 (9,2,3,4)
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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.