Wednesday, May27, 2020
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Marine Weather and Tides
French Valley, 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 5:38AMSunset 7:51PM Wednesday May 27, 2020 1:26 AM PDT (08:26 UTC) Moonrise 10:00AMMoonset 12:00AM Illumination 26% Phase: Waxing Crescent; Moon at 5 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- 911 Pm Pdt Tue May 26 2020
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 12 seconds and sw 2 to 3 ft at 18 seconds. Areas of dense fog with vsby 1 nm or less after midnight.
Wed..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 12 seconds and sw 2 to 3 ft at 18 seconds. Areas of dense fog with vsby 1 nm or less in the morning.
Wed night..Wind W to 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 11 seconds and sw 3 ft at 16 seconds. Patchy fog in the evening, then areas of fog after midnight. Vsby 1 nm or less.
Thu..Wind variable less than 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and sw 3 ft at 16 seconds. Patchy fog with vsby 1 nm or less in the morning.
Thu night..Wind W to 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and sw 3 ft at 15 seconds.
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 sw 3 to 4 ft.
Fri night..Wind variable less than 10 kt...becoming nw 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft and sw 3 to 4 ft.
Sat..Wind variable less than 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less... Becoming 3 ft in the afternoon. Mixed swell W 2 ft and S 3 to 4 ft.
Sat night..Wind nw 10 to 15 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. Mixed swell W 2 to 4 ft and S 3 to 4 ft.
Sun..Wind nw 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 to 4 ft and S 3 ft.
Sun night..Wind nw 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. Mixed swell W 3 to 4 ft and S 3 ft.
PZZ700 911 Pm Pdt Tue May 26 2020
Synopsis for the far southern california coast.. At 9 pm, 1025 mb high was 900 miles west of san francisco and a 1003 mb low was over the lower colorado river valley. Patchy dense fog is expected over the coastal waters tonight and Wednesday night. There will be slight increase in onshore flow over the weekend as surface low pressure approaches the northern california coast.


7 Day Forecast for Marine Location Near French Valley, CA
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location: 33.63, -117     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 270434 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 930 PM PDT Tue May 26 2020

SYNOPSIS. Strong high pressure aloft will continue through Thursday, keeping temperatures well above average in the deserts and other inland areas. A cooling trend will start Friday west of the mountains, with high temperatures dropping back down to near seasonal normals, but the deserts will only have slight cooling Friday. The marine layer and weak onshore flow will keep coastal areas cooler with night and morning low clouds and locally dense fog. Over the weekend and into next week, the marine layer will deepen and onshore flow will strengthen, spreading low clouds farther inland, and all areas will continue to be cooler.

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

Skies were clear except for a few patches of stratus near the coast. The stratus should become more extensive overnight, and some fog will develop, with dense fog fairly likely over the coastal mesas and other elevated terrain near the coast. Aircraft soundings showed an inversion base around 800 feet MSL, which would support this, and observations to the west and northwest, such as San Clemente Island, suggest an even lower inversion (KNUC on San Clemente Island and LAX have cloud base around 400-500 feet MSL). Most areas should clear by mid-morning, much like with this morning, but could take until late morning at the beaches since the local WRF projects the inversion strength to be around 9 deg C, but without an eddy, then at this inversion strength, most clouds should be gone by afternoon.

The big story will be the heat inland, and in the forecast update (including analyzing the highs from today), we increased temperatures 1-3 deg F inland. 850 mb temps increase by about 1 deg C from today's readings in all the main models, so Wednesday should be the hottest day of the week in most locations. I would not be surprised to see an isolated 113 deg F reading Wed afternoon. Thursday should be almost as hot (possibly no change in the desert) as any 850 mb temp decreases will be minimal and mostly near the coast. I probably don't have to say this by now, but remember to stay safe if you (or a loved one) are out in the heat!

From previous discussion .

High pressure will sit over Southern California through Friday. Temperatures in the deserts will reach their peak Wednesday and Thursday with highs in the High Desert reaching 100-103, and 108-112 in the low desert. As the high pressure system begins to move east on Friday temperatures will begin to slowly decrease. Temperatures in the deserts will fall to seasonal normals by Sunday.

West of the mountains, the marine layer will keep temperatures near the coast in the 70s, with temperatures in the mid-80s to mid-90s inland. The Inland Empire will see the warmest conditions, with temperatures locally reaching 15 degrees above normal. Highs in the IE are expected to reach the upper 90s. These warm conditions are expected through Thursday, before a cooling trend begins Friday through the weekend.

An upper level low pressure system will move into northern and central California late Friday, which will strengthen onshore flow and deepen the marine layer across Southern California. While there are still some differences in the details, global ensembles keep a weak trough along the California coast through early next week. This will keep temperatures around seasonal normals and spread low clouds and fog into the western valleys.

AVIATION. 270345Z . Coast . SCT005-010 at the coast becoming BKN-OVC004-008 through 09Z and spreading inland with CIGS at KSAN/KCRQ/KSNA between 09Z-17Z Wednesday and visibilities 1-3SM in fog. Dense fog with vis less than a 1/2 mile most likely at KCRQ. Skies becoming clear after 17Z.

Valleys/Mountains/Deserts . Mostly clear through Wednesday night. Haze may limit vis to 4-6 miles at KONT and KSBD from 14-19Z.

MARINE. Areas of dense fog will impact the coastal waters through Thursday. Wind gusts to 20 knots are forecast over the offshore waters Saturday and Sunday. Otherwise, no hazardous marine weather is expected through the weekend.

BEACHES. There will be a high rip current risk through the weekend as a series of southwest swells rolls into SoCal beaches. These swells will generate surf of 3 to 5 feet with occasionally higher sets of 6 to 7 feet in Orange and northern San Diego County beaches. Conditions will be borderline for a High Surf Advisory (surf of 7 feet or greater) Friday and Saturday.

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

SGX WATCHES/WARNINGS/ADVISORIES. CA . Excessive Heat Warning until 7 PM PDT Friday for Apple and Lucerne Valleys-Coachella Valley-San Diego County Deserts- San Gorgonio Pass Near Banning.

PZ . NONE.

PUBLIC . Maxwell (Update)/CO (Previous Discussion) AVIATION/MARINE . Moede


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46224 - Oceanside Offshore, CA (045) 40 mi56 min 68°F3 ft
46266 49 mi146 min 64°F 67°F3 ft

Wind History for La Jolla, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Riverside / March Air Force Base, CA23 mi28 minN 010.00 miFair60°F45°F59%1012.5 hPa

Link to 5 minute data for KRIV

Wind History from RIV (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW10NW11W10
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W12NW14NW8NW7W5SW4CalmCalmCalm
1 day agoCalmCalmCalmW3W3CalmCalmS4E3Calm--NW8NW7NW13
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2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmNW5NW4N7NW8W10W11NW13
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Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Wed -- 05:43 AM PDT     Sunrise
Wed -- 07:39 AM PDT     -0.34 feet Low Tide
Wed -- 10:03 AM PDT     Moonrise
Wed -- 02:48 PM PDT     3.22 feet High Tide
Wed -- 06:36 PM PDT     2.71 feet Low Tide
Wed -- 07:52 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.24.94.33.32.21.10.2-0.2-0.300.71.52.22.83.13.23.12.92.72.72.93.33.94.4

Tide / Current Tables for Newport Bay Entrance, Corona del Mar, California
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Newport Bay Entrance
Click for Map
Wed -- 05:43 AM PDT     Sunrise
Wed -- 07:43 AM PDT     -0.34 feet Low Tide
Wed -- 10:03 AM PDT     Moonrise
Wed -- 03:09 PM PDT     3.25 feet High Tide
Wed -- 06:29 PM PDT     2.89 feet Low Tide
Wed -- 07:54 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.354.43.42.31.20.3-0.2-0.3-00.61.32.12.73.13.23.232.92.93.13.53.94.4

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 (4,6,7,8)
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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.