Friday, February28, 2020
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Marine Weather and Tides
La Quinta, 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 6:13AMSunset 5:41PM Friday February 28, 2020 12:45 PM PST (20:45 UTC) Moonrise 10:06AMMoonset 11:22PM Illumination 27% 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- 203 Am Pst Fri Feb 28 2020
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.
Sat..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 3 ft at 13 seconds.
Sat night..Wind sw 10 to 15 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 12 seconds.
Sun..Wind W 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell W 4 to 7 ft at 8 seconds. Slight chance of showers in the morning, then chance of showers in the afternoon.
Sun night..Wind W 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell W 7 to 8 ft. Chance of showers.
Mon..Wind N 10 to 15 kt...becoming nw in the afternoon. Wind waves 3 ft. SWell W 5 to 7 ft. Slight chance of showers in the morning.
Mon night..Wind nw 15 kt...becoming N after midnight. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 4 to 7 ft.
Tue..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft.
Tue night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 ft.
PZZ700 203 Am Pst Fri Feb 28 2020
Synopsis for the far southern california coast.. At 2 am a 1034 mb high was over southwest wyoming and a 1017 mb low was over san diego. Onshore flow will return this afternoon, strengthening Saturday ahead of an approaching storm system. The incoming storm will bring stronger northwest winds, showers and a slight chance of Thunderstorms Sunday. Showers will taper off early Monday, but winds will decrease Tuesday.


7 Day Forecast for Marine Location Near La Quinta, CA
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location: 33.64, -116.27     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 281714 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 914 AM PST Fri Feb 28 2020

SYNOPSIS. Weakening offshore flow, and a very dry airmass will continue much above average temperatures today, even with abundant high cloudiness. Weak onshore flow overnight will bring moisture back to the coast with patchy fog possible. Stronger onshore flow on Saturday will bring cooling and higher humidity inland ahead of a low pressure system dropping south along the Central Coast. This system will bring a chance of some, mostly light showers on Sunday into Monday morning, along with much cooler days. Showers will end on Monday with dry and warmer weather on tap through much of next week.

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

Moderate offshore sfc pressure gradients continue to support some gusty easterly winds along the coastal mtn slopes and through passes. Peak gusts of 25 to 35 MPH have been reported through 8 AM PST. Satellite imagery shows the thickest high cloud band slipping east of the CWA, but plenty more, closer to 15K FT were spreading NE off the coastal waters. This should keep the sun somewhat filtered much of the day. Lower, marine clouds were not visible offshore this morning. The 12Z Miramar sounding had a sfc-based inversion and NE winds 10-15 KTS from the sfc through about 12K FT.

It will be another warm one today as offshore flow gradually weakens. Winds will turn back onshore over coastal areas by afternoon, which will begin a trajectory for marine air toward the coast. Arrival of that air is uncertain, but models suggest dewpoints should nudge upward late in the day, and may rise more dramatically this evening along the Coast. This shallow moist layer could result in some patchy dense fog overnight over coastal areas, but confidence is low due to the amount of high clouds and prevailing onshore trends under a weakening EastPac trough. No forecast changes this morning.

From previous discussion .

A weak low pressure system well off the southern California will continue to draw subtropical moisture and high clouds northward and across southern California today. These high clouds will begin to decrease tonight into Saturday. As weak onshore flow returns tonight, some patchy low clouds and fog may return near the coastal late tonight into early Saturday. This could initially be in the form of dense fog with aircraft soundings near the coast showing a shallow marine inversion.

A cold low pressure system from the northwest will move southward along the central California coast on Sunday into southern California Sunday night into Monday morning and into northern Baja and northwest Mexico Monday night.

Some lighter precipitation may develop late Saturday night into Sunday morning west of the mountains. The most significant precipitation is expected for Sunday evening into Monday morning. Rainfall is expected to range from one tenth inch or less near the coast to one quarter to one half inch in the mountains.

Snow levels will lower to around 4500 feet on Sunday, then to 3000 to 3500 feet Sunday night into Monday morning. A few inches of snow are likely in the mountains above 4500 feet with local amounts around 6 inches on the peaks above 7000 feet.

As the low pressure system approaches, there will be stronger and gusty southwest winds in the mountains and deserts for Sunday morning into Sunday evening.

The coolest high temperatures are expected on Sunday with slow warming except in the deserts on Monday. High pressure will bring greater warming for Tuesday through Thursday.

AVIATION. 281705Z . BKN high clouds will gradually lower from 20000 feet MSL this morning to 10000 feet early Saturday. SCT-BKN low clouds 500-1000 ft MSL impacting the coast after 10Z. Low confidence in patchy fog occurring at coastal TAF sites early Saturday morning.

MARINE. Calm conditions expected through Saturday. A storm on Sunday will bring strong westerly winds and a large swell, generating wind and sea conditions most likely hazardous for small craft. High seas up to 10 feet and gusty northwesterly winds 20-30 kts are possible. Winds subsiding Sunday with swell not subsiding until late Monday. No hazardous marine weather expected Tuesday through Thursday.

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 . 10/17 AVIATION/MARINE . APR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46224 - Oceanside Offshore, CA (045) 71 mi46 min 62°F3 ft

Wind History for La Jolla, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for KTRM

Wind History from TRM (wind in knots)
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Last 24hrW3NW33N3SE6SE6S8SE6S6CalmNE3CalmN4N5W6N3N4N5W5N5N4SW3CalmW4
1 day agoCalmCalmNW33W3N55W3CalmSE3SE5CalmCalmW5NW3N4N4N3W3N3NW3NW4N4N3
2 days ago----------N5N12
G16
N106NE7NE85S6S7CalmE9W3SW4CalmCalmS3CalmCalm3

Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Fri -- 05:35 AM PST     1.26 feet Low Tide
Fri -- 06:20 AM PST     Sunrise
Fri -- 09:11 AM PST     Moonrise
Fri -- 11:20 AM PST     3.60 feet High Tide
Fri -- 05:21 PM PST     1.19 feet Low Tide
Fri -- 05:46 PM PST     Sunset
Fri -- 10:27 PM PST     Moonset
Fri -- 11:49 PM PST     4.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.23.83.12.31.71.31.31.62.22.83.33.63.53.22.621.51.21.31.62.333.74.1

Tide / Current Tables for La Jolla, Scripps Pier, California
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La Jolla
Click for Map
Fri -- 05:38 AM PST     1.36 feet Low Tide
Fri -- 06:18 AM PST     Sunrise
Fri -- 09:10 AM PST     Moonrise
Fri -- 11:23 AM PST     3.46 feet High Tide
Fri -- 05:16 PM PST     1.30 feet Low Tide
Fri -- 05:45 PM PST     Sunset
Fri -- 10:25 PM PST     Moonset
Fri -- 11:52 PM PST     4.24 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.23.83.12.41.81.41.41.62.12.73.23.43.43.12.621.51.31.41.82.43.13.74.1

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 (15,3,4,5)
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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 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.