Tuesday, April7, 2020
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Marine Weather and Tides
Mead 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 6:26AMSunset 7:15PM Tuesday April 7, 2020 1:00 PM PDT (20:00 UTC) Moonrise 7:06PMMoonset 6:31AM Illumination 100% Phase: Full Moon; Moon at 15 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- 202 Am Pdt Tue Apr 7 2020
Today..Wind ne 10 kt...becoming sw in the afternoon. Wind waves 2 ft or less. SWell W 3 ft at 9 seconds. SWell sw 3 ft. Showers likely. Slight chance of tstms in the afternoon.
Tonight..Wind W 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and sw 3 ft at 18 seconds. Showers likely in the evening, then chance of showers after midnight.
Wed..Wind W 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 10 seconds and S 3 to 4 ft at 17 seconds. Showers likely in the morning, then chance of showers and slight chance of tstms in the afternoon.
Wed night..Wind sw 10 kt. Wind waves 2 ft or less. Mixed swell W 3 to 4 ft at 7 seconds and S 3 to 4 ft at 17 seconds. Chance of showers.
Thu..Wind W 10 kt. Wind waves 2 ft or less. Mixed swell W 3 to 4 ft at 7 seconds and S 3 to 4 ft at 16 seconds. Chance of showers.
Thu night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 ft. Slight chance of showers.
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. Mixed swell W 2 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 ft and S 3 ft.
Sat..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 ft.
Sat night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 ft.
PZZ700 202 Am Pdt Tue Apr 7 2020
Synopsis for the far southern california coast.. At 2 am, a 1025 mb high was 800 nm west of san francisco and a 1014 mb low covered the lower desert region. Showers are expected through Thursday night, with a slight chance of Thunderstorms mainly this afternoon and Wednesday afternoon. Onshore flow will weaken Saturday.


7 Day Forecast for Marine Location Near Mead Valley, CA
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location: 33.85, -117.33     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 071555 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 855 AM PDT Tue Apr 7 2020

SYNOPSIS. A low pressure system southwest of Point Conception will move slowly toward the southeast and east, finally moving eastward and out of the area on Saturday. Periods of showers will continue into Friday with a slight chance of thunderstorms this afternoon and again Wednesday afternoon. Saturday through Monday will be mostly dry and a little warmer.

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

Showers continue to move north-northeast across the area this morning with the most widespread activity just off the San Diego County coast. The morning sounding from KNKX shows precipitable water of 0.84 inch, down only slightly from the 0.90 inch yesterday afternoon. Weak instability developing this afternoon will be sufficient for locally heavy showers and a slight chance of thunderstorms.

Showers should decrease in coverage and intensity tonight as instability decreases. All models are showing a somewhat narrow band of precipitation wrapping around the east and north sides of the low. Depending on where this sets up there could be moderate rain over the deserts tonight into Wednesday morning, though at this point it looks like it will remain east and north of our forecast area.

The upper level low finally moves over the area on Wednesday. The colder air near the center of the storm will bring snow levels down to 4500-5000 ft. Greater instability is expected, especially during the afternoon, increasing the threat of thunderstorms and isolated heavy showers. Moisture decreases significantly which will help limit rainfall amounts.

This low pressure system will remain centered over the southwestern states for Thursday and Friday before weakening and moving off to the east on Saturday. Periods of showers will continue on Thursday and decrease on Friday.

The lowest high temperatures are expected on Wednesday and Thursday with high temperatures for some inland areas 20 to 25 degrees below average. There will be a warming trend for Friday through Monday but with high temperatures remaining below average.

AVIATION. 071530Z . Coast/Valleys/Mountains . Occasional -SHRA will continue today and tonight with variable cigs 1000-3500 feet MSL, occasional vis 1-4SM with higher terrain obscured at times. Lowest cigs/vis during SHRA or +RA, as well as during isolated brief TSRA during the afternoon. -SHSN will occur in the mountains mainly above 5500 feet MSL. The rainy and snowy pattern will continue into tomorrow.

Deserts . BKN skies around 5000-1000 FT MSL with areas of -SHRA at times. Best chances this afternoon and tonight where some ceilings could fall to below 4000 feet MSL, and local vis could fall to 3- 5SM.

MARINE. There is a slight chance of thunderstorms, mainly during this afternoon and Wednesday afternoon. Otherwise, no hazardous marine weather is expected through Saturday.

BEACHES. There is a slight chance of thunderstorms producing lightning strikes, mainly during this afternoon and Wednesday afternoon.

HYDROLOGY. Through Friday, additional rainfall is expected to range from around 1.5 inches near the coast to 2 to 4 inches in the mountains with 1 to 1.5 inches across the high deserts and one half to one inch in the lower deserts. There is also a slight chance of thunderstorms for this afternoon and Wednesday afternoon.

A snow level near 6000 to 6500 feet today, will lower to 4500 to 5000 feet for late tonight through Wednesday night, then rise to 5000 to 5500 feet Thursday. In the mountains of San Bernardino and Riverside Counties, additional snowfall of 3 to 6 inches is expected from 4500 to 5500 feet, 6 to 12 inches from 5500 to 6500 feet, 12 to 24 inches from 6500 to 7500 feet, with greater than 24 inches on the highest peaks.

The potential for urban and small stream flooding will continue today and Wednesday along with the possibility of isolated flash flood flooding with thunderstorms or where showers track repeatedly across the same area. Low water crossings along the San Diego River in Fashion Valley will experience minor flooding through at least Wednesday as the river is forecast to remain above monitor stage.

SKYWARN. Skywarn activation may be requested this afternoon.

SGX WATCHES/WARNINGS/ADVISORIES. CA . Flash Flood Watch through Wednesday evening for Apple and Lucerne Valleys-Coachella Valley-Orange County Coastal Areas-Orange County Inland Areas-Riverside County Mountains- San Bernardino County Mountains-San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Coastal Areas-San Diego County Deserts-San Diego County Mountains-San Diego County Valleys-San Gorgonio Pass Near Banning-Santa Ana Mountains and Foothills.

Winter Storm Warning until 5 AM PDT Thursday for Riverside County Mountains-San Bernardino County Mountains.

PZ . NONE.

PUBLIC . SS HYDROLOGY . SS/17 AVIATION/MARINE/BEACHES . APR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 46 mi42 min SSE 4.1 G 5.1
46224 - Oceanside Offshore, CA (045) 47 mi30 min 61°F3 ft
46256 47 mi30 min 61°F3 ft
PFXC1 47 mi42 min SSE 7 G 8
PSXC1 48 mi42 min SE 5.1 G 7
46253 49 mi32 min 60°F3 ft
AGXC1 49 mi96 min SE 6 G 8
BAXC1 49 mi96 min ESE 7 G 7
PFDC1 49 mi102 min ESE 6 G 7

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Riverside / March Air Force Base, CA4 mi62 minE 410.00 miMostly Cloudy57°F48°F74%1017 hPa
Riverside Municipal Airport, CA9 mi67 minN 010.00 miOvercast58°F48°F70%1016.6 hPa
Corona Airport, CA15 mi64 minVar 310.00 miLight Rain58°F50°F75%1017.5 hPa
Chino, Chino Airport, CA18 mi67 minSE 46.00 miRain59°F50°F72%1018 hPa
San Bernardino Intl. Airport, CA19 mi64 minN 06.00 miOvercast with Haze59°F48°F68%1017.9 hPa
Ontario International Airport, CA20 mi67 minSSE 410.00 miLight Rain58°F48°F72%1017.4 hPa

Link to 5 minute data for KRIV

Wind History from RIV (wind in knots)
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Last 24hrS10S9S10S7NW4N8NW5N5N3CalmNW3NW5W4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE4
1 day agoS5SW5S8S9S6CalmS6S7SE6S9S9SE9SE8SE9SE8E8SE10S13
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Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Tue -- 03:20 AM PDT     -0.45 feet Low Tide
Tue -- 06:29 AM PDT     Sunrise
Tue -- 06:31 AM PDT     Moonset
Tue -- 09:23 AM PDT     5.57 feet High Tide
Tue -- 03:36 PM PDT     -0.61 feet Low Tide
Tue -- 07:06 PM PDT     Moonrise
Tue -- 07:15 PM PDT     Sunset
Tue -- 07:35 PM PDT     Full Moon
Tue -- 09:44 PM PDT     5.83 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.91.40.2-0.4-0.30.623.54.85.55.44.63.31.70.4-0.5-0.50.21.53.14.65.65.85.2

Tide / Current Tables for Newport Bay Entrance, Corona del Mar, California
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Newport Bay Entrance
Click for Map
Tue -- 03:19 AM PDT     -0.17 feet Low Tide
Tue -- 06:30 AM PDT     Sunrise
Tue -- 06:32 AM PDT     Moonset
Tue -- 09:24 AM PDT     5.53 feet High Tide
Tue -- 03:35 PM PDT     -0.48 feet Low Tide
Tue -- 07:08 PM PDT     Moonrise
Tue -- 07:17 PM PDT     Sunset
Tue -- 07:35 PM PDT     Full Moon
Tue -- 09:49 PM PDT     5.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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31.60.4-0.100.82.13.64.85.55.44.63.31.80.4-0.3-0.40.31.53.14.55.45.75.2

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 (16,3,4,5)
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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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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.