Thursday, February20, 2020
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Marine Weather and Tides
Boulevard, 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 6:23AMSunset 5:37PM Thursday February 20, 2020 10:59 AM PST (18:59 UTC) Moonrise 5:43AMMoonset 4:01PM Illumination 9% Phase: Waning Crescent; Moon at 27 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- 232 Am Pst Thu Feb 20 2020
Today..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 12 seconds.
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 13 seconds.
Fri..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 14 seconds.
Fri night..Wind S 10 kt. Gusts to 15 kt after midnight. Wind waves 2 ft or less. SWell W 1 to 2 ft at 14 seconds. Chance of rain after midnight.
Sat..Wind sw 10 kt with gusts to 15 kt. Wind waves 3 ft. SWell W 1 to 3 ft at 14 seconds. Rain likely and slight chance of tstms in the morning, then chance of rain in the afternoon.
Sat night..Wind W 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft. Slight chance of rain in the evening.
Sun..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft.
Mon..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 3 to 4 ft.
Mon night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft.
PZZ700 232 Am Pst Thu Feb 20 2020
Synopsis for the far southern california coast.. Onshore flow will alternate with offshore flow through Saturday, producing generally light and variable winds. A low pressure storm system will bring showers Friday night through Saturday, with a slight chance of Thunderstorms late Friday night through Saturday morning. Weak onshore flow will follow Sunday and Monday.


7 Day Forecast for Marine Location Near Boulevard, CA
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location: 32.67, -116.31     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 201722 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 922 AM PST Thu Feb 20 2020

SYNOPSIS. Fair and mild weather will continue through Friday. Today will be the warmest day west of the mountains. A low pressure system will come into the region late Friday through Saturday, bringing increased clouds, cooler temperatures, precipitation, and a slight chance of thunderstorms. Dry weather will return on Sunday into the first part of next week. Offshore flow is likely early next week, which will bring locally gusty winds to the mountains, deserts and passes.

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

High pressure over the western part of the country will provide quiet conditions today with warm temperatures and mostly clear skies, though patchy clouds at the coast may linger this afternoon into tonight. Some places west of the mountains could reach 80 degrees today! An upper level low pressure system in the eastern Pacific will continue to move eastward, providing slight cooling and high clouds for Friday. Mid to upper 70s expected for valley locations depending on cloud cover.

Latest models pinpoint the onset of the precipitation starting Friday night. Areas of light rain and mountain snow can be expected, though conditions do look favorable for a few thunderstorms to occur in parts of the coasts and valleys Saturday morning. Southerly and westerly winds likely will not reach advisory levels, with gusts around 25 to 35 mph. Models and ensembles are continuing on an upward trend for precipitation amounts, with most areas receiving between 1/4 and 1/2 inch of precipitation. Mountains and coastal slopes could receive up to an inch of precipitation.

Snow levels will hover around 5500-6000 feet Friday night through Saturday night, with a few inches of snow possible below 6000 feet and 5 inches or more above 6000 feet. Snow will mainly be confined to the San Bernardino and Riverside mountains, but a dusting of snow can't be ruled out for the higher peaks of the San Diego County mountains.

As our system quickly exits Sunday, high pressure will progress eastward over the area providing quiet weather into early next week. Offshore flow will likely occur Monday and Tuesday, with periods of gusty northeast winds in the mountains and deserts possible. It's still too early to tell exact timing and strength of these offshore winds, so confidence is rather low on wind speeds, however it is not looking to be a major offshore event at this time. Some model solutions are suggesting another storm system moving into the region sometime late next week.

AVIATION. 201710Z . Coast/Valleys . Patchy low clouds based around 500 feet MSL with tops around 1000 feet will continue to dissipate and push offshore. After about 21/10Z tonight low clouds based around 600-900 feet MSL with tops to near 1200 feet MSL are possible at the immediate coast and a few miles inland. Intermittent sct-bkn clouds are possible with local vis restrictions of 2-4 SM in patchy fog possible as well. The risk of a brief bkn low cloud deck at KSAN Friday morning is low-moderate, so confidence is moderate on mainly SCT low clouds at KSAN Friday morning.

Mountains/Deserts . Mostly clear skies with some occasional high clouds through Friday.

MARINE. As a storm system moves across the region Friday night into Saturday, there will be a slight chance of thunderstorms, along with occasional showers. Otherwise, no other hazardous marine weather is expected through next Wednesday.

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 . APR/PG AVIATION/MARINE . Small


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 44 mi74 min NW 5.1 59°F 1020 hPa54°F
46235 46 mi59 min 59°F2 ft
SDBC1 - 9410170 - San Diego, CA 46 mi65 min 61°F1019.5 hPa

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Campo, CA9 mi67 minENE 19 G 24 miBreezy67°F23°F19%1018.2 hPa

Link to 5 minute data for KNJK

Wind History from NJK (wind in knots)
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Last 24hrN44N5N4NE63SE4CalmCalmS3NE4CalmW7NW5NW6W7SW6W6W7W6W7W4NW3NE4
1 day agoSE53S5SE7SE4SE4NE5NE5CalmCalmCalmW4W3W5W6W6W4W4CalmS4CalmW4W3N5
2 days ago4--3CalmN3------------------------------W7CalmCalmNE8

Tide / Current Tables for National City, San Diego Bay, California
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National City
Click for Map
Thu -- 01:17 AM PST     2.01 feet Low Tide
Thu -- 04:46 AM PST     Moonrise
Thu -- 06:26 AM PST     Sunrise
Thu -- 07:15 AM PST     6.38 feet High Tide
Thu -- 02:26 PM PST     -1.03 feet Low Tide
Thu -- 03:05 PM PST     Moonset
Thu -- 05:38 PM PST     Sunset
Thu -- 08:48 PM PST     4.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.422.12.83.84.95.96.46.25.44.12.50.9-0.3-1-0.9-0.212.43.64.44.64.23.5

Tide / Current Tables for Imperial Beach, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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 San Diego, 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.