Tuesday, December18, 2018 L-36.com


Marine Weather and Tides
San Diego, 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 6:45AMSunset 4:47PM Tuesday December 18, 2018 4:06 AM PST (12:06 UTC) Moonrise 3:01PMMoonset 3:18AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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- 211 Am Pst Tue Dec 18 2018
.small craft advisory for hazardous seas in effect through this evening...
Today..Wind variable less than 10 kt...becoming nw to 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 4 to 7 ft at 18 seconds.
Tonight..Wind nw 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 6 ft at 16 seconds.
Wed..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft at 15 seconds.
Wed night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 ft at 14 seconds.
Thu..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 5 ft at 18 seconds.
Thu night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft. Patchy fog with vsby 1 nm or less after midnight.
Fri..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft. Patchy fog with vsby 1 nm or less in the morning.
Fri night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft. Patchy fog with vsby 1 nm or less after midnight.
Sat..Wind se 10 kt in the morning...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft. Patchy fog with vsby 1 nm or less in the morning.
Sat night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft. Patchy fog with vsby 1 nm or less after midnight.
PZZ700 211 Am Pst Tue Dec 18 2018
Synopsis for the far southern california coast.. At 1 am, a 1027 mb high was 900 nm west of san diego and a 1026 mb high was over northeast nevada. A 1018 mb low covered southern sonora, mexico. A large long-period swell will move through the coastal waters today, generating hazardous seas for small craft. Weak offshore flow develops Wednesday, continuing through Thursday. Onshore flow expected Friday and Saturday.


7 Day Forecast for Marine Location Near San Diego, CA
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location: 32.78, -117.23     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 181143
afdsgx
area forecast discussion
national weather service san diego ca
343 am pst Tue dec 18 2018

Synopsis
The storm system that moved across california on Monday will exit
into new mexico today, although a few rogue sprinkles will still
be possible through daybreak this morning. Later today cloudiness
will decrease but it will be another seasonably cool day. High
surf will continue to pound the beaches through this evening. A
strong high pressure ridge will build in later today through
Wednesday with fair and much warmer weather Wednesday through
Friday. The ridge will break down over the weekend leading to
cooler, but continued dry conditions. A storm system could bring
even cooler and wet weather for christmas.

Discussion For extreme southwestern california including orange...

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

7-day summary:
* continued cool today but decreasing clouds
* warm & dry wed-fri with gusty offshore winds
* cooler and more clouds for the weekend
* storm system may bring precip and cool conditions around xmas
day
the weak storm system that brought a few showers and some clouds
to socal Monday and overnight is exiting into nm early this
morning as evident on the latest water vapor satellite imagery. A
strong upper level ridge is building across the east pac and is
also evident on water vapor satellite this morning. A few stations
did pick up a few hundredths of an inch of rain yesterday. Patchy
dense fog is also occurring ATTM in the inland valleys and the
forecast was amended to add the fog through mid morning. Otherwise
the areas of low clouds are slowly dissipating early this
morning. Some scattered cloudiness will continue today for inland
areas.

The upper level ridge will build across socal through Wednesday
and Thursday. Moderate offshore gradients will materialize
Wednesday afternoon through Thursday with areas of gusty winds
below the passes and across the foothills of the san bernardino
and santa ana mountains. At this time areas of gusty winds should
mainly be below wind advisory thresholds with areas of winds
around 35 mph possible in the windy spots.

In addition to the gusty offshore winds, temperatures will really
warmup for all areas west of the mountains Wednesday and Thursday,
with unseasonably warm conditions lingering into Friday.

Temperatures will top out Thursday about 10 to 15 degrees above
normal, so around 80 possible in the inland valleys. Ridging
builds east of our area for Friday allowing some onshore flow near
the coast and the threat of fog late Thursday night and Friday
morning, likely repeating for the weekend periods.

A weak trough passes over socal quickly Friday and Friday evening
bringing increasing onshore flow and cooler conditions for the
weekend. Continued brisk NW flow through early next week.

A series of upper level troughs Sunday through mid next week will
bring some potential for precipitation. The first trough looks to
affect the region Sunday and Monday with cooler conditions,
increasing clouds but not looking like much of a precipitation
chance. Have not added to the forecast yet however due to poor
agreement in the global models with this first trough. The second
trough is forecast to be stronger, dropping further south and
closer to the coast but still inland. Both the ec and GFS agree on
this trough digging over socal for xmas eve into xmas day which
could bring a potential for more widespread precipitation,
although the GFS still favors a further inland track. So far out
now in the forecast but the improving model confidence is
promising for now. Our forecast only GOES through the 24th ATTM so
precipitation will not be mentioned in the worded forecast for
the entire 7 day period, until maybe this afternoon when the xmas
day forecast is added. Anyway, there are some indications of a
potential significant storm system by that time, and will be
interesting to see how the pattern evolves in the next few days.

Aviation
181000z... Coast valleys... Areas of low clouds with bases 1000-2500
feet msl will continue to dissipate this morning. Isolated vis
reduced in low lying inland pockets. Mostly clear skies should
prevail by 17-18z and continue through tonight.

Marine
A large long-period swell from the wnw will continue today. It will
generate combined seas of 10-13 feet in the outer coastal waters,
creating hazardous sea conditions near shoals. The inner waters
could have some hazardous conditions near jetties and the entrance
to mission bay. Swell and seas will subside late today and
Wednesday. The small craft advisory for hazardous seas is in effect
for all coastal waters.

Beaches
High surf will continue today and gradually decrease late in the
day. A high surf advisory remains in effect and contains the surf
and hazard details. Swell and surf will subside tonight and
Wednesday, although another swell Thursday could again bring high
surf.

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

Sgx watches warnings advisories
Ca... High surf advisory until 10 pm pst this evening for orange
county coastal areas-san diego county coastal areas.

Pz... Small craft advisory for hazardous seas until 10 pm pst this
evening for coastal waters from san mateo point to the
mexican border and out to 30 nm-waters from san mateo point
to the mexican border extending 30 to 60 nm out including
san clemente island.

Public... Brotherton
aviation marine... Mm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 5 mi43 min 1021.6 hPa
LJPC1 - La Jolla, CA (073) 6 mi47 min NNE 1 4 ft
LJAC1 - 9410230 - La Jolla, CA 6 mi43 min ENE 1 G 1.9 59°F 62°F1021.7 hPa
46254 6 mi37 min 63°F4 ft
46258 14 mi37 min 64°F7 ft
46225 - Torrey Pines Outer, CA (100) 14 mi37 min 64°F7 ft
46235 15 mi37 min 62°F8 ft
TIXC1 - Tijuana River Reserve, CA 15 mi82 min Calm 56°F 1022 hPa54°F
46232 - Point Loma South, CA (191) 20 mi37 min 64°F11 ft
46224 - Oceanside Offshore, CA (045) 30 mi37 min 63°F5 ft
46086 - San Clemente Basin 47 mi77 min WNW 7.8 G 12 61°F 63°F13 ft1022 hPa (-0.9)

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, San Diego International-Lindbergh Field, CA5 mi16 minN 010.00 miPartly Cloudy61°F55°F84%1021.9 hPa
San Diego, Montgomery Field, CA6 mi14 minN 010.00 miFair53°F50°F89%1021.1 hPa
San Diego, North Island, Naval Air Station, CA6 mi75 minN 08.00 miMostly Cloudy60°F55°F84%1021.5 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA8 mi72 minENE 410.00 miFair54°F48°F80%1021.2 hPa
Gillespie Field Airport, CA14 mi32 minN 010.00 miFair50°F48°F94%1021.7 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA15 mi11 minE 58.00 miFair52°F50°F93%1021.5 hPa
San Diego, Brown Field Municipal Airport, CA19 mi14 minE 410.00 miFair52°F50°F93%1021.3 hPa

Wind History from SAN (wind in knots)
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Last 24hrCalmCalmE4CalmCalmCalmW6N7W5W5NW7W7W6NW5W4NW4N3CalmS4NE3CalmCalmCalmCalm
1 day agoCalmCalmN3CalmNE4W4W3W4NW9NW10W4W5W6NW3NW3N4NE6W4CalmNW3CalmCalmNE3W3
2 days agoN6SW4N3CalmW3NW3NW5NW8W9NW9NW9NW9N7N3CalmCalmCalmCalmCalmN3N3NW4CalmCalm

Tide / Current Tables for Crown Point, Mission Bay, California
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Crown Point
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Tue -- 02:18 AM PST     Moonset
Tue -- 05:52 AM PST     5.45 feet High Tide
Tue -- 06:45 AM PST     Sunrise
Tue -- 01:01 PM PST     0.60 feet Low Tide
Tue -- 02:01 PM PST     Moonrise
Tue -- 04:45 PM PST     Sunset
Tue -- 06:38 PM PST     3.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.82.63.64.65.25.45.24.53.52.41.50.80.60.81.52.43.13.63.73.42.92.21.7

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Tue -- 02:17 AM PST     Moonset
Tue -- 03:19 AM PST     1.37 knots Max Flood
Tue -- 06:19 AM PST     -0.00 knots Slack
Tue -- 06:45 AM PST     Sunrise
Tue -- 09:35 AM PST     -1.76 knots Max Ebb
Tue -- 01:14 PM PST     0.00 knots Slack
Tue -- 02:01 PM PST     Moonrise
Tue -- 04:08 PM PST     1.12 knots Max Flood
Tue -- 04:45 PM PST     Sunset
Tue -- 06:53 PM PST     -0.00 knots Slack
Tue -- 09:40 PM PST     -1.23 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.71.11.41.30.90.2-0.5-1.3-1.7-1.7-1.4-0.8-0.20.50.91.110.6-0.1-0.7-1.1-1.2-0.9

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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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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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.