Thursday, April2, 2020
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Marine Weather and Tides
San Clemente, 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 6:34AMSunset 7:13PM Thursday April 2, 2020 10:48 AM PDT (17:48 UTC) Moonrise 1:17PMMoonset 3:00AM Illumination 72% Phase: Waxing Gibbous; Moon at 10 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 Pdt Thu Apr 2 2020
Today..Wind sw 10 kt. Wind waves 2 ft or less. SWell W 4 to 5 ft at 10 seconds.
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft at 10 seconds.
Fri..Wind variable less than 10 kt...becoming sw 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. SWell W 3 to 4 ft at 9 seconds.
Fri night..Wind W 10 kt with gusts to 15 kt... Becoming sw after midnight. Wind waves 2 ft or less. SWell W 3 to 5 ft at 10 seconds.
Sat..Wind sw 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft at 9 seconds.
Sat night..Wind W 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft.
Sun..Wind variable less than 10 kt...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 4 ft. Slight chance of showers.
Sun night..Wind sw 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft. Chance of showers.
Mon..Wind W 10 kt with gusts to 20 kt. Wind waves 3 ft in the morning...becoming 2 ft or less. SWell W 3 to 4 ft. Showers likely.
Mon night..Wind W 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft. Chance of showers.
PZZ700 211 Am Pdt Thu Apr 2 2020
Synopsis for the far southern california coast.. At 2 am, a 1027 mb high was 600 nm west of san francisco and a 1003 mb low was over las vegas. A 1012 mb low extending from the channel islands to catalina anchored a coastal eddy. The eddy circulation will continue through Saturday. Brisk northwest winds with occasional gusts exceeding 20 kts are expected around san clemente island for a few hours each evening today and Friday. Onshore flow increases Sunday into Monday, with showers and a cold front set to move through the coastal waters Monday.


7 Day Forecast for Marine Location Near San Clemente city, CA
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location: 33.42, -117.62     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 021555 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 855 AM PDT Thu Apr 2 2020

SYNOPSIS. A coastal eddy will maintain a deep marine layer into Saturday with night and morning coastal low clouds spreading onto the coastal mountain slopes. Cool but fair weather continues into Saturday. A low pressure system will move slowly southward just off the California coast for Sunday through Tuesday, then slowly inland for Wednesday and Thursday. This is expected to bring periods of precipitation to portions of southern California for Sunday into Thursday with well below average high temperatures.

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

The marine layer deepened substantially this morning, spilling through the mountain passes and even into the high desert. The eddy remains in place and while there are signs of breaks in the clouds on satellite, they will be slow to clear, with some areas possibly remaining cloudy through the day. Better clearing is expected on Friday as the eddy drifts southwest and a weak passing trough weakens the marine inversion somewhat. Extensive low clouds will follow for Friday night into Saturday as the eddy strengthens again. Mild weather with highs near to slightly below normal will continue into Saturday.

A closed low pressure system centered off the northern California coast on Sunday will move slowly southward through the early part of the week. There is some spread in the position of the center of the upper low for Monday and Tuesday with the non-GFS solutions still fairly close on Tuesday. At that time, the GFS ensemble mean is close to the model consensus with the operational GFS the faster and more eastern outlier. The upper low may drift slowly toward the southeast into Wednesday, then move slowly eastward with increasing spread in the timing for Wednesday into Thursday.

From Sunday into Thursday, rainfall could range from 1 to 1.5 inches near the coast to 2.5 to 3.5 inches in the mountains with local amounts to 6 inches in the San Bernardino mountains. In the deserts, rainfall of one half to one inch is possible in high deserts areas with less than one quarter inch in the lower deserts.

Confidence is lower on when the more significant periods of precipitation will occur. While snow could fall as low as 4000 to 4500 feet at times, the more significant snowfall will be mostly above 5500 feet.

High temperatures will be well below average for Sunday through Thursday with Monday through Wednesday the coolest days with high temperatures 10 to 15 degrees below average except towards the coast.

AVIATION. 021500Z . Coast/Valleys . Widespread low clouds with bases 1500-3500 ft MSL and tops 4000-4500 ft MSL filling the coastal basin and into mountain passes. Foothills between those levels obscured. SCT conditions expected for most areas by 18Z. Areas of BKN low clouds may linger along the coast today. Low clouds to move ashore after 02Z, especially KSAN/KCRQ, and after 05Z in KSNA. Clouds 1500-2000 feet MSL with tops 2500 feet expected to fill most of the coastal basin overnight into Friday.

Mountains/Deserts . Westerly winds with gusts 25-45 kt will continue over the mountains and into the adjacent desert slopes this morning, beginning to weaken around 20Z. Strongest winds will be through passes and on the desert slopes. Areas of LLWS and moderate up/downdrafts are likely over and east of the mtns. Low clouds in high desert adjacent to mountains this morning, otherwise mostly clear today and tonight.

MARINE. Tonight and Friday evening, periods of breezy northwest winds with gusts occasionally exceeding 20 kts are expected around San Clemente Island. An incoming cold front is expected to produce areas of showers starting as early as Sunday, with most widespread rain expected Monday/Tuesday.

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

SGX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . NONE.

PUBLIC . SS/17 AVIATION/MARINE . CO


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46224 - Oceanside Offshore, CA (045) 18 mi169 min 60°F4 ft
46253 32 mi171 min 59°F5 ft
46225 - Torrey Pines Outer, CA (100) 36 mi169 min 58°F4 ft
46256 36 mi169 min 60°F5 ft
PRJC1 37 mi181 min Calm G 1
46266 37 mi229 min 58°F 60°F3 ft
46222 - San Pedro, CA (092) 39 mi176 min 59°F4 ft
AGXC1 39 mi235 min SSW 1 G 1
PFXC1 39 mi181 min SSE 1 G 1.9
PFDC1 39 mi235 min ENE 1.9 G 2.9
OHBC1 - 9410660 - Los Angeles, CA 40 mi187 min 61°F1014 hPa
PSXC1 40 mi181 min SE 2.9 G 4.1
BAXC1 41 mi235 min E 5.1 G 5.1
46254 42 mi169 min 60°F3 ft
PXAC1 42 mi235 min ESE 2.9 G 5.1
LJPC1 - La Jolla, CA (073) 43 mi209 min S 2.9 G 6 3 ft
LJAC1 - 9410230 - La Jolla, CA 43 mi187 min S 5.1 G 8 58°F 57°F1013.7 hPa
46258 47 mi169 min 61°F6 ft

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mcolf Camp Pendleton (Red Beach), CA13 mi53 minS 98.00 miOvercast64°F52°F65%1024 hPa
Oceanside, Camp Pendleton, Marine Corps Air Station, CA17 mi1.9 hrsS 59.00 miOvercast61°F50°F67%1014.4 hPa
Oceanside, Oceanside Municipal Airport, CA20 mi57 minSSW 104.00 miPartly Cloudy with Haze64°F55°F73%1014.8 hPa
John Wayne-Orange County Airport, CA22 mi56 minS 810.00 miMostly Cloudy64°F52°F65%1014.6 hPa

Link to 5 minute data for KNFG

Wind History from NFG (wind in knots)
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Last 24hrW4SW6SW8S8SW7SW7SW7CalmSW4S5SW4CalmCalmSE6CalmS6CalmS3CalmCalmCalmS6S5S7
1 day agoCalmCalm35SW6S6--SW3SW4CalmCalmCalmNW4Calm--CalmN3CalmCalmCalmCalmCalmCalmSW4
2 days ago3CalmW6W9W9W8
G17
4S8SW6CalmCalmNE3NE3CalmNE5--CalmCalmCalmN3CalmCalmCalmCalm

Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Thu -- 03:00 AM PDT     Moonset
Thu -- 04:37 AM PDT     4.37 feet High Tide
Thu -- 06:36 AM PDT     Sunrise
Thu -- 12:21 PM PDT     -0.11 feet Low Tide
Thu -- 01:17 PM PDT     Moonrise
Thu -- 07:12 PM PDT     Sunset
Thu -- 07:14 PM PDT     3.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.93.23.644.34.44.13.52.71.80.90.2-0.1-00.41.122.73.33.53.53.22.82.4

Tide / Current Tables for Balboa Pier, Newport Beach, California
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Balboa Pier
Click for Map
Thu -- 03:01 AM PDT     Moonset
Thu -- 04:35 AM PDT     4.28 feet High Tide
Thu -- 06:37 AM PDT     Sunrise
Thu -- 12:28 PM PDT     -0.06 feet Low Tide
Thu -- 01:18 PM PDT     Moonrise
Thu -- 07:13 PM PDT     Sunset
Thu -- 07:22 PM PDT     3.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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33.23.644.24.343.52.71.810.3-0-00.41.11.92.73.23.53.53.22.92.6

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 (13,3,4,5)
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Ground Weather Radar Station Santa Ana Mtns, 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 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.