Wednesday, March20, 2019 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 6:50AMSunset 7:00PM Wednesday March 20, 2019 1:56 AM PDT (08:56 UTC) Moonrise 6:54PMMoonset 6:55AM Illumination 99% Phase: Full Moon; Moon at 14 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- 114 Pm Pdt Tue Mar 19 2019
Tonight..Wind S 10 kt. Wind waves 2 ft or less. Mixed swell W 1 to 3 ft at 18 seconds and S 3 ft at 15 seconds. Chance of rain after midnight.
Wed..Wind S 10 kt...becoming W in the afternoon. Wind waves 2 ft or less. Mixed swell W 4 to 6 ft at 16 seconds and S 3 ft at 16 seconds. Chance of showers. Slight chance of tstms in the afternoon.
Wed night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. Mixed swell W 4 to 7 ft at 15 seconds and sw 3 to 5 ft at 15 seconds. Slight chance of tstms in the evening. Chance of showers.
Thu..Wind W 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 5 to 6 ft at 14 seconds. SWell S 3 ft. Chance of showers in the morning, then slight chance of showers in the afternoon.
Thu night..Wind W 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. SWell W 4 to 5 ft at 13 seconds. Slight chance of showers.
Fri..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 3 to 5 ft.
Fri night..Wind W 10 to 15 kt. Wind waves 2 ft or less. SWell W 3 to 6 ft.
Sat..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 4 ft. Slight chance of showers.
Sat night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 6 ft.
Sun..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 6 ft.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 6 ft.
PZZ700 114 Pm Pdt Tue Mar 19 2019
Synopsis for the far southern california coast.. At 1 pm, the southern california coastal waters lied in neutral flow between high pressure to the northeast and southwest, and low pressure to the northwest and southeast. A weak storm will arrive early Wednesday and increase the southerly winds. These will turn westerly Wednesday afternoon through Thursday and combined seas will increase. The storm will bring showers Wednesday through Thursday and a chance of Thunderstorms Wednesday. Light to moderate onshore flow will continue 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 200448
afdsgx
area forecast discussion
national weather service san diego ca
930 pm pdt Tue mar 19 2019

Synopsis
Mostly cloudy conditions will occur tonight as a low pressure system
approaches from the west. Cooler weather will prevail Wednesday
through Thursday with periods of showers and mountain snow, and a
slight chance of thunderstorms Wednesday afternoon and early
evening. Fair and a little warmer weather will return Friday. The
next low pressure system will bring a chance of mostly light showers
on Saturday. Dry with a warming trend will occur early next week.

Discussion For extreme southwestern california including orange...

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

clouds, both high and low, were increasing this evening, and radar
was showing some precipitation echoes aloft. The nkx sounding late
this afternoon showed a dry layer from just above the 1500 foot
marine layer inversion up to about 550 mb, so a lot of the
precipitation aloft will evaporate before reaching the surface. The
first hint of organized precipitation should be early Wednesday
morning along the coast. Overall, there is not much change in the
forecast of this storm as most of the precipitation will be light,
but local rain rates up to 0.40" per hour are possible in heavier
showers or isolated thunderstorms due to the instability from the
cold core which will move over most of california. A second wave
late Thursday should bring some additional precipitation, but
overall, most locations west of the mountains should remain below
0.50" for Wednesday through Thursday, with local amounts up to
around one inch in the san bernardino county mountains. Snowfall of
3-6 inches is possible above about 6500 feet in sbd county, with
lighter snowfall down to the approximately 5500 foot snow level.

From previous discussion... A low pressure system currently at about
125 west longitude will move through socal Wednesday and Thursday.

It will bring lower temperatures, increasing clouds, gusty westerly
winds and periods of showers Wed through thu. Showers will move in
from the west on Wednesday morning. Most of the precip will fall
between early Wed morning and Wed evening, decreasing thereafter.

Isolated to scattered showers will continue through Thursday. Cold
air advection aloft and increasing instability will bring a chance
of thunderstorms Wed afternoon and evening. Current rainfall
estimates are for 0.15-0.25 inch near the coast, 0.30-0.75 inch in
the mtns and less than 0.25 inch in the deserts.

Snow levels will be 5500-6500 feet Wed morning and early
afternoon, lowering to 5000-5500 feet for Wed night into thu
morning. Snowfall amounts of 2-4 inches are expected above 5000
feet and up to 6 inches above 6000 feet.

Winds will strengthen from the west early Wed morning, peak wed
evening and weaken Thu morning. Wind gusts of up to 45 mph will be
possible on the desert slopes of san diego county and the
coachella valley.

A cooling trend that began today will continue through Thursday
which will be the coolest day, with daytime temperatures in the 50s
to low 60s at lower elevations west of the mtns.

Fair and warmer on Friday as a dynamic upper-level ridge moves in
from the west. Daytime temperatures will be mostly in the mid 60s
at lower elevations west of the mtns. Another low pressure system
moving inland to the north on Sat will bring cooler and unsettled
weather. This will be a relatively fast-moving system so precip is
expected to begin Sat morning and end by Sat evening. Socal will
be on the southern periphery of this system so only small amounts
of precip is expected.

After this system moves inland to the northeast, a building ridge
of high pressure over the western u.S. Will bring dry weather and
a warming trend. Daytime temperatures are expected to return to
near seasonal averages by early next week.

Aviation
200345z... Coasts valleys mountains... Areas of low clouds with bases
2000-2500 ft msl will continue along and west of the mountains
through about 12z. After 12z... Sct-bkn cloud layers with bases 2500-
5000 ft msl with tops to 8000 ft msl with sct -shra through
Wednesday evening, along with a slight chance of -tsra in the
afternoon. Vis may be locally reduced to 3-5 sm in heavier
showers thunderstorms. Coastal mountain slopes will remain obscured.

Mountains deserts... West sfc winds 15-20 kts gusting to 35 kts over
the mountain crests, desert mountain slopes, and through the passes
through early Wednesday morning, and again Wednesday afternoon and
evening. Mod uddfts likely over and east of the mtns at times. Iso-
sct -shra possible Wednesday afternoon with increasing clouds aoa
7000 ft msl.

Marine
A weak storm will bring west winds gusting 15-20 kt and higher seas,
along with showers Wednesday through Thursday. There is a slight
chance of thunderstorms Wednesday afternoon and evening. Another
weak storm may bring additional light showers on Saturday.

Beaches
A swell of 7-8 ft at 14-16 sec from 280 degrees will generate high
surf of 3-8 feet Wednesday afternoon through Friday morning, highest
in southern san diego county. Swell and surf will subside on Friday.

Another larger west-northwest swell may bring additional high surf
this weekend.

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

Sgx watches warnings advisories
Ca... Winter weather advisory from 5 pm Wednesday to 8 pm pdt Thursday
for riverside county mountains-san bernardino county
mountains.

High surf advisory from 1 pm Wednesday to 1 pm pdt Friday for
orange county coastal areas-san diego county coastal areas.

Pz... None.

Public... Maxwell pg
aviation marine beaches... Ss


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 4 mi45 min 76°F1016.5 hPa
46235 7 mi57 min 59°F3 ft
TIXC1 - Tijuana River Reserve, CA 7 mi72 min Calm 54°F 1017 hPa51°F
LJAC1 - 9410230 - La Jolla, CA 15 mi45 min SSE 5.1 G 8 58°F 61°F1016.5 hPa
LJPC1 - La Jolla, CA (073) 15 mi37 min SE 5.1 G 8.9 1 ft
46254 16 mi59 min 61°F1 ft
46232 - Point Loma South, CA (191) 19 mi27 min 60°F4 ft
46258 21 mi27 min 60°F3 ft
46225 - Torrey Pines Outer, CA (100) 23 mi27 min 59°F3 ft
46224 - Oceanside Offshore, CA (045) 40 mi27 min 60°F3 ft
46242 - Camp Pendleton Nearshore, CA (043) 42 mi59 min 60°F3 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 mi65 minSSE 810.00 miMostly Cloudy64°F52°F65%1016.5 hPa
San Diego, San Diego International-Lindbergh Field, CA5 mi66 minS 510.00 miPartly Cloudy60°F51°F72%1017.2 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA6 mi2 hrsSE 510.00 miLight Rain53°F48°F86%1016.9 hPa
San Diego, Brown Field Municipal Airport, CA10 mi64 minN 010.00 miFair49°F46°F90%1016.5 hPa
San Diego, Montgomery Field, CA11 mi64 minN 010.00 miFair56°F50°F81%1016.4 hPa
Gillespie Field Airport, CA14 mi82 minno data10.00 miFair52°F50°F94%1016.6 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA15 mi2 hrsESE 310.00 miFair56°F48°F77%1016.2 hPa

Wind History from NZY (wind in knots)
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Last 24hrW3CalmCalmE3SE3S7S8S7S8S10S12S13S12S11S11S14SW12S9S9S10S9SE8SE7S8
1 day ago--------CalmCalmCalmSE4S5SW8S6S7SW7SW74S4S4CalmCalmCalmCalmCalmCalmCalm
2 days ago----------CalmCalmCalmCalmCalmNW4W8SW10SW8S7S8S6S4S3CalmCalm------

Tide / Current Tables for National City, San Diego Bay, California
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National City
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Wed -- 03:40 AM PDT     0.04 feet Low Tide
Wed -- 06:52 AM PDT     Sunrise
Wed -- 06:54 AM PDT     Moonset
Wed -- 09:41 AM PDT     6.82 feet High Tide
Wed -- 04:13 PM PDT     -1.24 feet Low Tide
Wed -- 06:43 PM PDT     Full Moon
Wed -- 06:53 PM PDT     Moonrise
Wed -- 06:59 PM PDT     Sunset
Wed -- 10:21 PM PDT     6.09 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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42.51.10.20.10.82.23.95.66.66.86.14.62.70.9-0.6-1.2-0.90.21.93.85.365.9

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Wed -- 12:53 AM PDT     -2.09 knots Max Ebb
Wed -- 03:52 AM PDT     0.00 knots Slack
Wed -- 06:52 AM PDT     Sunrise
Wed -- 06:54 AM PDT     Moonset
Wed -- 07:01 AM PDT     2.14 knots Max Flood
Wed -- 09:56 AM PDT     -0.00 knots Slack
Wed -- 01:10 PM PDT     -2.72 knots Max Ebb
Wed -- 04:30 PM PDT     0.00 knots Slack
Wed -- 06:43 PM PDT     Full Moon
Wed -- 06:54 PM PDT     Moonrise
Wed -- 07:00 PM PDT     Sunset
Wed -- 07:35 PM PDT     2.23 knots Max Flood
Wed -- 10:36 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.8-2.1-1.7-0.90.11.11.92.11.91.1-0.1-1.3-2.3-2.7-2.5-1.7-0.60.61.62.12.21.70.7-0.5

Weather Map and Satellite Images
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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 (4,6,7,8)
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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.