Monday, April6, 2020
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Marine Weather and Tides
Dana Point, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:30AMSunset 7:15PM Sunday April 5, 2020 10:30 PM PDT (05:30 UTC) Moonrise 4:44PMMoonset 5:17AM Illumination 97% 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- 150 Pm Pdt Sun Apr 5 2020
.small craft advisory in effect from 11 pm pdt this evening through Monday afternoon...
Tonight..Wind sw 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell sw 2 to 3 ft at 7 seconds. Slight chance of rain in the evening, then chance of rain after midnight.
Mon..Wind S 10 to 20 kt with gusts to 25 kt. Wind waves 5 ft. SWell sw 2 to 5 ft at 7 seconds. Rain.
Mon night..Wind sw 10 to 15 kt...becoming nw after midnight. Gusts to 20 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell sw 3 to 5 ft at 9 seconds. Rain likely and slight chance of tstms.
Tue..Wind sw 10 to 15 kt with gusts to 20 kt. Wind waves 2 ft or less...becoming 3 to 4 ft in the afternoon. SWell sw 3 to 4 ft at 9 seconds. SWell sw 3 ft. Chance of rain and slight chance of tstms.
Tue night..Wind W 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 3 ft at 17 seconds. Chance of showers and slight chance of tstms.
Wed..Wind W 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less...becoming 3 ft in the afternoon. Mixed swell W 2 to 3 ft and S 3 to 4 ft. Chance of showers and slight chance of tstms.
Wed night..Wind W 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 to 4 ft. Chance of showers.
Thu..Wind W 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 to 4 ft. Chance of showers in the morning, then slight chance of showers in the afternoon.
Thu night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 3 ft.
Fri..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft and S 3 ft.
Fri night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 ft. SWell S 3 ft.
PZZ700 150 Pm Pdt Sun Apr 5 2020
Synopsis for the far southern california coast.. At 1 pm, a 1000 mb low was 150 northwest of san francisco and a 1018 mb high was about 600 miles southwest of san diego. A cold front will move through the coastal waters, bringing periods of showers and gusty west southwest winds of 20-25 kt for late Sunday evening through Monday afternoon. There is a chance of Thunderstorms over the coastal waters Monday afternoon to Wednesday evening.


7 Day Forecast for Marine Location Near Dana Point city, CA
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location: 33.45, -117.68     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 060445 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 945 PM PDT Sun Apr 5 2020

SYNOPSIS. A slow-moving winter-like storm will bring cold weather and periods of rain and mountain snow through Wednesday night. Widespread precipitation in the northern areas Monday morning will move south into San Diego County Monday afternoon and Monday night. Scattered showers and isolated thunderstorms are forecast Tuesday and Wednesday. Heavy snow will impact the San Bernardino mountains. The storm will exit the region Friday, followed by dry and milder weather next weekend.

DISCUSSION. FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE . SAN DIEGO . WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES .

The AR is on it's way. The PW on the Vandenberg sounding was 0.86" this evening, up from 0.56" this morning. A band of moderate rain made landfall over Santa Barbara County this afternoon with max 1- hour rain rates of 0.30" over the Santa Ynez and Sierra Madre mountains. 6-hour totals ranged from 0.75"-1.40". That band of rain will sag south and reach Orange and San Bernardino Counties around daybreak. Areas with the greatest rain impacts Monday morning include Orange County, the San Bernardino Counties mountains and the Inland Empire from Chino to San Bernardino. Road flooding will be an issue in low areas and on roads with poor drainage. Rainfall records for April 6th may be broken. The daily rain record for Riverside is 0.92".

Precipitable water values with this AR will be twice the norm. With the moisture plume squarely focused on the southwest facing slopes of the San Bernardino Mountains, enhanced orographics will support 1- hour rain rates upwards of 0.50"/hr. This is where the flash flood threat will be the greatest due to strong southwest winds and the deep moisture. The Cansac WRF forecasts from 3-6" of rain on some of the southwest facing slopes of the San Gabriel Mountains as well as the San Bernardinos.

The lead band of rain Monday morning will move south into San Diego County Monday afternoon and Monday night. After that we will be in the cold sector of the storm Tuesday and Wednesday with scattered showers, isolated thunderstorms and lower snow levels.

* From Previous Discussion *

Current projections take the center inland near San Diego County From Pre on Wednesday, when instability will be maximized for potential thunderstorms and numerous showers. After that model solutions are quite different. The slower ECMWF model is favored here, and develops quite a bit of precip over the southern deserts Tue night into Wed. Then, the precip mechanism transitions to wrap- around as the upper low lifts NE toward Las Vegas on Thursday. This track would keep/bring another round of showers back across the forecast area Wed night and Thu. The track is favorable for excessive amounts of snow in the San Bernardino Mts and should rival, if not exceed record April amounts that occurred back in the late 90s at higher elevations. A Winter Storm Warning is in effect for the area and may need to be extended in time if the current path projections of the ECMWF model pan out. Uncertainty remains high enough though, to blend in a faster eastward progression of the system inland in line with GFS/NAM solutions in later forecast periods.

It will be a wet week, but by Friday the low should be moving SE across AZ, setting us up for a fair, dry and warmer weekend.

AVIATION. 060300Z . Coast/Valleys/Mountains . BKN-OVC skies will prevail at all terminals through Tuesday. CIGS will generally range between 1800-3000 ft MSL, however may lower closer to 1000-1500 ft MSL anytime during periods of heavier rain. Rain, with possible embedded TS, will traverse the region Monday. The heaviest rain is expected 11-19Z for NW areas (KSNA, KONT), progressing SE through the day. Heaviest rain is expected Monday afternoon (18Z-04Z) for San Diego County. VIS will likely alternate between 2 and 6 miles for much of the day (San Diego terminals mostly 6SM+ during the morning), lowest during heavy rain when VIS may locally lower to 1SM for brief periods.

Wind will be an additional concern over the next 24 hours. Gusty winds are expected area-wide ahead of the front, with gusts generally 20-30 kts out of the S/SW. There is potential for winds to be particularly strong in coastal San Diego County, and KSAN may see gusts to 35 kts, most likely between 07Z and 16Z Monday. This may warrant an Airport Weather Warning for KSAN if trends hold, though confidence is low-moderate at this time.

Deserts . Mostly SCT skies tonight, becoming BKN by morning. -SHRA likely Monday afternoon (Monday morning in the High Desert) with SFC winds gusting 20-30 kts through much the day. VIS generally 6SM and above for most of the period, though may lower to near 3SM at times during heavier showers.

MARINE. Showers will continue to increase in coverage through tonight, becoming heavy by morning with isolated thunderstorms and waterspouts possible. The chance for thunderstorms may persist through Wednesday.

Winds will continue to strengthen over the next several hours, and will stay gusty through the day Monday, particularly ahead of the main front. South to southwest winds will gust to 25 kts, locally to 30 kts, at times through Monday evening. A Small Craft Advisory is in effect - see the bulletin for more information.

BEACHES. Isolated thunderstorms with lightning will be possible at times Monday through Wednesday.

HYDROLOGY. Long duration rainfall event will bring the potential for urban and small stream flooding at times, mainly Monday through Wednesday evening. There could also be isolated flash flooding in poor drainage areas and near recent burn scars. Here are the latest rainfall totals forecast for the period Monday through Thursday:

High Desert . 1.0-1.7 inches. Urbanized flooding will be a concern in the communities of the high desert.

Lower Deserts: 0.5-1.2 inches. Inflow into the Whitewater River will need to be monitored and may cause low-water crossing impacts in the Coachella Canal Tuesday or Wednesday.

Coast/Valley: 1.50-2.75 inches. Urban and small stream flooding will be a concern for all of these areas.

Mountains: 3-8 inches with the highest totals along the coastal slopes of the San Bernardino Mts. Less expected south through Riverside and the San Diego County Mts where less upslope enhancement is likely. Small streams may overflow their banks for a time later Monday into Tuesday on the coastal slopes when the most widespread moderate rainfall is expected. Rock and mud slides will be possible in the mountains below the snow level.

River flows will be higher than normal, even for the Mojave. Inflow to the Whitewater River may be sufficient for significant flows into the Coachella Canal and will need to be monitored. For the San Diego River, the duration and intensity of the rain will likely raise the River enough to close the low water crossings through Mission Valley at times, but timing is uncertain. At this time, no mainstem river flooding is forecast.

SKYWARN. Skywarn will be activated for San Bernardino, Orange and Riverside Counties at 8 AM Monday to report high rain rates and areas of flooding.

SGX WATCHES/WARNINGS/ADVISORIES. CA . Winter Storm Warning from 11 PM this evening to 5 AM PDT Thursday for Riverside County Mountains-San Bernardino County Mountains.

PZ . Small Craft Advisory from 11 PM this evening to 6 PM PDT Monday 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 . Moede Hydro . 10 AVIATION/MARINE . Rodriguez


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46224 - Oceanside Offshore, CA (045) 22 mi30 min 61°F3 ft
46253 28 mi32 min 62°F2 ft
PRJC1 33 mi42 min S 9.9 G 13
46256 33 mi30 min 62°F3 ft
PFXC1 35 mi42 min S 8.9 G 9.9
AGXC1 35 mi96 min S 14 G 16
46222 - San Pedro, CA (092) 36 mi37 min 61°F2 ft
PSXC1 36 mi42 min SSE 7 G 11
PFDC1 36 mi102 min SE 13 G 14
OHBC1 - 9410660 - Los Angeles, CA 37 mi48 min 62°F1012.3 hPa
BAXC1 37 mi96 min ESE 8.9 G 12
PXAC1 38 mi96 min SSE 6 G 7
46225 - Torrey Pines Outer, CA (100) 39 mi30 min 59°F3 ft
46266 40 mi180 min 58°F 61°F2 ft
LJPC1 - La Jolla, CA (073) 46 mi70 min S 7 G 11 1 ft
LJAC1 - 9410230 - La Jolla, CA 46 mi48 min S 8 G 11 58°F 61°F1012.8 hPa
46254 46 mi30 min 61°F1 ft
46258 49 mi60 min 61°F3 ft

Wind History for Los Angeles Pier J, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mcolf Camp Pendleton (Red Beach), CA17 mi34 minS 810.00 miOvercast62°F48°F62%1021.7 hPa
John Wayne-Orange County Airport, CA19 mi37 minS 9 G 157.00 miLight Rain61°F50°F67%1012.3 hPa
Oceanside, Camp Pendleton, Marine Corps Air Station, CA20 mi35 minS 45.00 miLight Rain57°F50°F78%1013 hPa
Oceanside, Oceanside Municipal Airport, CA24 mi38 minSSE 65.00 miOvercast with Haze58°F53°F84%1012.8 hPa

Link to 5 minute data for KSNA

Wind History from SNA (wind in knots)
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Last 24hrSE7S8S8S3SE4S6SE5E6SE63SE5SE8S5SW7S9SW9S11S14SW12
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1 day agoE4E6E3E5E4E6E3SE3E3E4E6S1164SW11
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2 days agoS5SE3SE4CalmE3CalmSE4E4E5SE4S44SW5SW9SW9S10
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Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Mon -- 02:34 AM PDT     0.15 feet Low Tide
Mon -- 05:54 AM PDT     Moonset
Mon -- 06:30 AM PDT     Sunrise
Mon -- 08:35 AM PDT     5.67 feet High Tide
Mon -- 03:00 PM PDT     -0.88 feet Low Tide
Mon -- 05:55 PM PDT     Moonrise
Mon -- 07:15 PM PDT     Sunset
Mon -- 09:10 PM PDT     5.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.110.30.20.923.54.75.55.64.93.72.10.6-0.5-0.9-0.50.62.23.74.95.55.24.3

Tide / Current Tables for Newport Beach, Newport Bay Entrance, Corona del Mar, California (sub)
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Diego, CA (1,6,7,8)
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Ground Weather Radar Station Santa Ana Mtns, CA
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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 numerous 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.