Monday, March18, 2019 L-36.com


Marine Weather and Tides
Descanso, 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 6:52AMSunset 6:58PM Monday March 18, 2019 8:53 AM PDT (15:53 UTC) Moonrise 4:31PMMoonset 5:27AM Illumination 94% Phase: Waxing Gibbous; Moon at 12 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- 202 Am Pdt Mon Mar 18 2019
Today..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 15 seconds.
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 14 seconds. Patchy fog with vsby 1 nm or less after midnight.
Tue..Wind S 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 13 seconds and S 3 ft at 15 seconds. Patchy fog with vsby 1 nm or less in the morning.
Tue night..Wind S 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. Mixed swell W 2 to 4 ft at 18 seconds and S 3 to 4 ft at 11 seconds. Chance of showers. Slight chance of tstms after midnight.
Wed..Wind W 10 to 15 kt. Wind waves 3 ft. Mixed swell W 3 to 6 ft at 17 seconds and sw 3 to 4 ft at 6 seconds. Showers likely and slight chance of tstms.
Wed night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. Mixed swell W 4 to 7 ft and sw 3 to 4 ft. Showers likely and slight chance of tstms.
Thu..Wind W 10 kt with gusts to 15 kt. Wind waves 2 ft or less. Mixed swell W 5 to 7 ft and S 3 ft. Slight chance of tstms in the morning. Chance of showers.
Thu night..Wind W 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. SWell W 4 to 6 ft. Slight chance of showers in the evening.
Fri..Wind se 10 kt...becoming W in the afternoon. Wind waves 2 ft or less. SWell W 4 to 5 ft.
Fri 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.
PZZ700 202 Am Pdt Mon Mar 18 2019
Synopsis for the far southern california coast.. At 2 am, a 1015 mb low covered the coastal waters in between high pressure areas over the central continent and southwest of san diego. Light winds today will be followed by increased southerly flow Tuesday ahead of a weak storm that arrives early Wednesday. Brisk southerly winds will turn westerly Wednesday afternoon through Thursday and seas will grow. The storm will bring showers and a small chance of Thunderstorms Wednesday through Thursday. Light to moderate onshore flow will continue Friday.


7 Day Forecast for Marine Location Near Descanso, CA
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location: 32.87, -116.63     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 181005
afdsgx
area forecast discussion
national weather service san diego ca
305 am pdt Mon mar 18 2019

Synopsis
Fair and warm today, with a gradual cooling trend through midweek.

Some low clouds and fog could develop along the coast, mainly Monday
night. A pacific trough will arrive Wednesday morning with showers
and gusty southerly winds. A few thunderstorms are possible as well.

Snow will fall in the mountains, and could become heavy at times
Wednesday night through Thursday. A much weaker system could bring a
few showers again by the weekend, and even next week the potential
for rain and mountain snow continues with temperatures below average.

Discussion For extreme southwestern california including orange...

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

skies were mostly clear at 2 am pdt. Only a few clouds were evident
in satellite imagery over the coastal waters. The sfc pressure
gradients from the deserts remained offshore but were weakening and
trending more onshore to the east. Wind reports were light. Better
onshore gradients will mean cooler and more moist marine air will
gradually work inland through Tuesday for cooler days and more
coastal marine clouds. Still warm today well inland, but the sea
breeze will make it cooler near the coast.

A weak ridge over the SW today, will give way to an approaching
trough over the far eastpac by Wednesday. The trough will have
several spokes of energy rotating through it. The first arrives wed
morning with a negative tilt and difluence aloft as the nose of a 90
kt, 250 mb jet drives east across far northern baja. This puts us in
the favorable left front quadrant for lift and possible heavy
convective showers or thunderstorms. Precipitable water will be
increasing to just under one inch, and the 00z nam12 has a fair
amount of mu cape. These parameters all point to at least the
possibility of some locally heavy downpours on Wednesday.

The operational models all show an upper low closing off on
Wednesday, but it is handled differently by each. Heights fall over
socal through the day as colder air feeds into the trough and the
upper low drops SE across ca. All of the recent ECMWF runs have
consistently been deeper and slightly farther west with the trailing
shortwave and upper low. Probably due to a slower demise of the
massive ridge aloft, centered over SW canada. This slower trend
makes sense and may give the ECMWF model an advantage in forecasting
the ultimate depth and track of the incipient closed low to affect
us midweek.

Following the ecmwf, the colder and deeper solution means showers of
significance will likley continue through Thursday, with snow levels
a bit lower than forecast by n.A. Blends. With that in mind, snow
amounts still look modest below 6500 ft, but at or above 6500 ft,
six inches or more is possible from Wednesday afternoon through
Thursday night. Convection could enhance amounts locally. Storm
total rainfall amounts will be light to moderate overall (0.25-0.50
inch) coast valleys, but there will likley be heavier showers which
could cause local impact due to runoff and ponding of water,
particularly in urban areas and burn scars. For the deserts,
rainfall still looks minimal (0.05 to 0.20 inch). Maximum coastal
slope and thunderstorm amounts could be around an inch or more
locally.

In terms of wind... Look for some gusty southerly winds 15 to 25 mph
coast and western valleys Wednesday morning, becoming westerly and
gusty Wednesday pm through Thursday (mainly mts deserts).

Friday still looks mostly dry ahead of another fast-moving pacific
trough. This one does not look to amplify, and models show it
passing to the north of us with minor impact here. Gusty westerly
winds are expected over the mts deserts, and there is a chance for
some light showers along and west of the mts on Saturday. Once again
the ECMWF is a bit stronger with the wave.

The global models show potential for a stronger storm system again
next week, but timing and track differences are too large at this
point for any forecast confidence of impact over socal.

Aviation
180900z... Mostly clear skies today and tonight, but with isolated
coastal low clouds based at 500-800 feet msl and local vis below 3sm
remotely possible through 16z. Low confidence of impact at coastal
airports. Slightly greater coastal cloud coverage is expected
tonight after 05z.

Marine
A weak pacific storm will likely bring showers with a slight chance
of thunderstorms, along with an increase in winds and seas Wednesday
through Thursday. However, winds and seas do not appear hazardous.

Beaches
Building swell this week will generate surf up to 4-8 feet Wednesday
into Thursday. This would bring a high rip current risk before surf
subsides on Friday.

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public... 10
aviation marine beaches... Mm


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 31 mi41 min 1015.2 hPa
LJPC1 - La Jolla, CA (073) 33 mi33 min SSE 1.9 G 6 2 ft
LJAC1 - 9410230 - La Jolla, CA 33 mi41 min S 1.9 G 2.9 62°F 60°F1015 hPa
TIXC1 - Tijuana River Reserve, CA 33 mi68 min ENE 1 52°F 1016 hPa46°F
46254 34 mi55 min 61°F1 ft
46235 35 mi53 min 59°F3 ft
46225 - Torrey Pines Outer, CA (100) 41 mi53 min 59°F3 ft
46258 47 mi53 min 59°F4 ft
46232 - Point Loma South, CA (191) 48 mi53 min 59°F4 ft
46224 - Oceanside Offshore, CA (045) 49 mi53 min 58°F3 ft
46242 - Camp Pendleton Nearshore, CA (043) 49 mi55 min 59°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
Gillespie Field Airport, CA18 mi66 minN 010.00 miClear48°F44°F87%1015.9 hPa
Campo, CA19 mi61 minN 0 mi46°F36°F68%1014.6 hPa
Ramona, Ramona Airport, CA19 mi60 minSSE 510.00 miFair45°F42°F90%1015.7 hPa

Wind History from SEE (wind in knots)
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Last 24hrCalmCalmCalmCalmW8W10SW8SW76Calm--Calm--NW3--NW4NW3CalmCalmCalmNW3CalmCalmCalm
1 day agoCalmCalmCalmCalmW10W11W11W11W9CalmCalmCalm--CalmCalm----CalmCalmCalmCalmCalmCalmCalm
2 days agoCalm4666SW12
G17
W11W11W11W8CalmCalm------CalmCalmNW3--CalmCalmW3--Calm

Tide / Current Tables for National City, San Diego Bay, California
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National City
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Mon -- 02:06 AM PDT     1.23 feet Low Tide
Mon -- 05:27 AM PDT     Moonset
Mon -- 06:55 AM PDT     Sunrise
Mon -- 08:05 AM PDT     6.66 feet High Tide
Mon -- 02:58 PM PDT     -1.43 feet Low Tide
Mon -- 04:33 PM PDT     Moonrise
Mon -- 06:58 PM PDT     Sunset
Mon -- 09:13 PM PDT     5.36 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.41.61.21.52.43.75.16.26.76.35.33.71.80.1-1-1.4-10.21.93.54.85.35.14.3

Tide / Current Tables for San Diego, California (2)
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San Diego
Click for Map
Mon -- 01:56 AM PDT     1.36 feet Low Tide
Mon -- 05:27 AM PDT     Moonset
Mon -- 06:55 AM PDT     Sunrise
Mon -- 08:01 AM PDT     6.35 feet High Tide
Mon -- 02:49 PM PDT     -1.17 feet Low Tide
Mon -- 04:33 PM PDT     Moonrise
Mon -- 06:58 PM PDT     Sunset
Mon -- 09:09 PM PDT     5.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.31.61.41.72.63.8566.364.93.41.60.1-0.9-1.2-0.60.52.13.54.65.14.94

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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Wind Forecast for San Diego, CA (11,2,3,4)
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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.