Sunday, April18, 2021
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Marine Weather and Tides
Dana Point, CA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:14AMSunset 7:25PM Sunday April 18, 2021 2:45 PM PDT (21:45 UTC) Moonrise 10:39AMMoonset 12:44AM Illumination 44% Phase: First Quarter Moon; Moon at 7 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- 151 Pm Pdt Sun Apr 18 2021
Tonight..Wind nw 10 to 20 kt with gusts to 25 kt. Wind waves 4 to 5 ft in the evening...becoming 2 ft or less. SWell nw 3 to 4 ft at 7 seconds.
Mon..Wind nw to 10 kt...becoming W in the afternoon. Wind waves 2 ft or less...becoming 3 ft in the afternoon. SWell W 3 ft at 7 seconds.
Mon night..Wind W 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 7 seconds.
Tue..Wind S 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft at 8 seconds.
Tue night..Wind sw 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft at 10 seconds.
Wed..Wind sw 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 4 ft. Patchy drizzle in the morning.
Wed night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft. Slight chance of rain.
Thu..Wind W 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 ft. Slight chance of rain in the morning.
Thu night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft. SWell S 3 ft.
Fri..Wind variable less than 10 kt...becoming W 10 kt with 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 ft.
Fri night..Wind nw 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.
PZZ700 151 Pm Pdt Sun Apr 18 2021
Synopsis for the far southern california coast.. At 1 pm, a 1010 mb low was over southern arizona and a 1022 mb high was over northern nevada. Occasional breezy northwest winds will bring local gusts over 20 knots this evening and Monday evening. Some southerly winds will develop starting Tuesday and continue through Wednesday before moderate westerly winds return Thursday.


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


Area Discussion for - San Diego, CA
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FXUS66 KSGX 182024 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 123 PM PDT Sun Apr 18 2021

SYNOPSIS. Santa Ana weather will persist into Monday, but winds will weaken along the coastal foothills, and cooling will begin along the immediate coast. It will remain quite warm inland on Monday, with cooling making better inland progress through midweek. Onshore flow will strengthen late Monday ahead of another trough dropping south through Nevada, deepening the marine layer. Expect more clouds, fog, patchy drizzle, and perhaps some light rain showers Wednesday into Thursday morning. Temperatures will be below average through midweek, then rise back to average and above into next weekend.

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

At 1 PM PDT . Skies were clear over SoCal. The offshore sfc pressure gradient was weakening and wind reports, while gusty in many areas, including the deserts, were falling below Advisory strength. So the Wind Advisory has been cancelled. Still, it was very dry, and where it was breezy, the combination of wind and very low RH was creating elevated to near critical fire weather conditions in a few spots(See Fire Weather discussion below). Winds of 20-30 MPH with higher gusts to around 40 MPH will be confined to the wind-prone pass and foothill areas for the remainder of the day.

Today will be the warmest day of the week along the coast, even with a weak sea breeze. On Monday, winds will begin the day weakly offshore, but turn back onshore and become gusty through the passes and along the desert slopes later in the day. It will be warmer tomorrow inland, but coastal areas should begin to cool as marine air gradually replaces dry, continental air.

For Tuesday through Thursday, a broad trough will become reestablished over the SW, supporting stronger onshore flow and a deepening marine layer. Most ensemble members of the CMC/EC/GFS models have some light precip falling over the coastal basin either Wednesday or Thursday. Dynamics are weak, so any accumulations will be light. Once again, some of the lower coastal slopes could see some of the larger accumulations, due to better convergence in the shallow moist layer.

As we head into the weekend, a weak ridge develops over the SW and the ensembles favor at least slight warming over SoCal ahead of another developing EastPac trough next week as the marine layer shrinks back toward the Coast. Uncertainty increases considerably for next week as a number of ensemble solutions of both the CMC/ECMWF turn wet. The ECMWF deterministic is the most bullish, indicating a sizable late season storm here. The entire GFS ensemble spread however remains dry for that period.

AVIATION. 182030Z . Clear skies will prevail through Monday with unrestricted vis.

Areas of N-NE winds 15-25 knots with local gusts 30-40 knots will continue from the mountain crests through the foothills and into the valleys through 22Z with gradually diminishing winds through 02Z Mon. This will include VCNTY KONT, KCNO, KRAL, KRIV, KAJO. Areas of MOD up/downdrafts and LLWS will also occur.

MARINE. Northwesterly winds will locally gust around or slightly over 20 knots in the outer coastal waters this evening and then again Monday evening. Otherwise, no hazardous marine weather is expected through Thursday.

FIRE WEATHER. Several sites across the Inland Empire and into the San Gorgonio Pass were hovering near the edge of critical fire weather criteria at Noon today with RH at about 10% and wind gusts to 35 to locally 45 MPH. These winds will weaken this afternoon, but RH will remain low.

Some modest RH recovery will occur overnight, and coastal areas will continue to recover on Monday, while inland areas fall back to or below 10%. Winds will turn back onshore by midday, and become gusty from the west through and below the passes, along the desert slopes and into the deserts. These areas will see elevated fire weather conditions by late afternoon.

The onshore flow and increasing marine influence will minimize fire weather conditions along and west of the mountains for the remainder of the week.

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/FIRE WEATHER . 10 AVIATION/MARINE . Maxwell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46224 - Oceanside Offshore, CA (045) 22 mi50 min 63°F3 ft
46253 28 mi20 min 63°F3 ft
46256 33 mi50 min 63°F3 ft
AGXC1 35 mi52 min SW 8.9 G 11 71°F 1014.1 hPa
46222 - San Pedro, CA (092) 36 mi85 min 64°F3 ft
PFDC1 36 mi58 min SSE 5.1 G 7
BAXC1 37 mi52 min SE 8 G 12
OHBC1 - 9410660 - Los Angeles, CA 37 mi46 min 62°F1016.2 hPa (-1.4)
PXAC1 38 mi58 min SSW 6 G 11
46225 - Torrey Pines Outer, CA (100) 39 mi50 min 64°F4 ft
46266 40 mi46 min 67°F 66°F3 ft
46254 46 mi50 min 68°F3 ft
LJAC1 - 9410230 - La Jolla, CA 46 mi46 min Calm G 1.9 68°F 62°F1014.4 hPa (-1.6)
LJPC1 - La Jolla, CA (073) 46 mi26 min NNE 1.9 G 5.1 3 ft
46258 49 mi20 min 63°F4 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), CA17 mi50 minno data10.00 miFair0°F0°F%1014.6 hPa
John Wayne-Orange County Airport, CA19 mi53 minENE 810.00 miPartly Cloudy88°F16°F7%1014.4 hPa
Oceanside, Camp Pendleton, Marine Corps Air Station, CA20 mi1.8 hrsNNE 10 G 1610.00 mi90°F16°F6%1014 hPa
Oceanside, Oceanside Municipal Airport, CA24 mi54 minWSW 1210.00 miFair84°F43°F24%1013.7 hPa

Link to 5 minute data for KNXF

Wind History from NXF (wind in knots)
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Tide / Current Tables for San Clemente, California
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San Clemente
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Sun -- 12:24 AM PDT     4.40 feet High Tide
Sun -- 12:43 AM PDT     Moonset
Sun -- 06:16 AM PDT     Sunrise
Sun -- 08:53 AM PDT     0.60 feet Low Tide
Sun -- 10:38 AM PDT     Moonrise
Sun -- 07:23 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.44.44.13.62.92.21.510.70.60.711.41.82.22.42.62.72.72.82.93.13.43.7

Tide / Current Tables for Newport Bay Entrance, Corona del Mar, California
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Newport Bay Entrance
Click for Map
Sun -- 12:32 AM PDT     4.42 feet High Tide
Sun -- 12:45 AM PDT     Moonset
Sun -- 06:16 AM PDT     Sunrise
Sun -- 09:02 AM PDT     0.61 feet Low Tide
Sun -- 10:39 AM PDT     Moonrise
Sun -- 07:25 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.44.44.23.732.31.61.10.70.60.70.91.31.72.12.42.62.82.92.93.13.33.53.7

Weather Map
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GEOS Local Image of Southwest    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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