Friday, January17, 2020
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Marine Weather and Tides
Potrero, 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 6:44AMSunset 5:07PM Friday January 17, 2020 8:03 AM PST (16:03 UTC) Moonrise 12:49AMMoonset 12:43PM Illumination 51% Phase: Third Quarter Moon; Moon at 22 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- 228 Am Pst Fri Jan 17 2020
Today..Wind nw to 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 4 ft at 13 seconds. Chance of showers in the morning.
Tonight..Wind N 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. SWell W 3 to 4 ft at 12 seconds.
Sat..Wind variable less than 10 kt...becoming nw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 3 ft at 12 seconds.
Sat night..Wind nw to 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 11 seconds.
Sun..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft at 13 seconds.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 3 ft.
Martin luther king jr day..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.
Mon night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Tue..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.
Tue night..Wind nw 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 ft.
PZZ700 228 Am Pst Fri Jan 17 2020
Synopsis for the far southern california coast.. At 2 am, a 1003 mb low was over western utah and a 1022 mb high was just southwest of san diego. A weak storm system will continue light showers this morning. Weak northwest flow will follow through the weekend with warmer and dryer conditions.


7 Day Forecast for Marine Location Near Potrero, CA
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location: 31.69, -116.65     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 171159 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 355 AM PST Fri Jan 17 2020

SYNOPSIS. Showers will end from north to south this morning as a cold front moves across the region. The weather will be dry and warmer this weekend as high pressure builds over the Southwest. A weak Pacific trough will bring minor cooling early next week.

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

Light precipitation ahead of a surface cold front is moving southeast across the region this morning. Snow was falling above 5,000 feet where 1" of snow has accumulated in a few areas. Chain control was in effect early this morning in the San Bernardino Mountains. The Winter Weather Advisory was extended to 8 AM for lingering light snow showers that will end shortly after sunrise.

Rain totals were highest in the San Bernardino County mountains below 5,000 feet with 0.71" at Panorama Point and 0.70" at Glen Helen Region Park through 330 AM. Rain amounts elsewhere ranged from 0.30"-0.50" in the Santa Ana Mountains and foothills, to 0.05"-0.30" in coastal and valley sections of Orange County and in the Inland Empire. Farther south in San Diego County the amounts were less than 0.20". Rain will end from north to south this morning, lingering longest in San Diego County. A rainfall summary is headlined on our homepage.

High pressure building in behind the departing trough this afternoon will bring dry and warmer weather this weekend. Sunday will be the warmest day with highs in the 70s west of the mountains and in the lower deserts, and in the 50s and 60s in the mountains and high deserts.

The high weakens and moves inland Monday as a weaker Pacific trough moves in from the northwest for minor cooling and some increase in clouds. Ensembles continue to advertise this as a weak system with limited moisture and dynamics. This is followed by weak ridging aloft for dry weather and seasonal temperatures Wednesday and Thursday.

AVIATION. 171100Z . A front moving across the region this morning is creating ceilings of 500-3500 ft MSL and -RA with VIS as low as 1-2 SM, mainly over and west of the mountains. Conditions will improve by late morning. West/southwest wind gusts of 30-40 kts will continue this morning along mountain ridgetops and desert mountain slopes. Strong up/downdrafts possible lee side of mountains, with conditions improving by mid-morning.

MARINE. Light showers will continue over portions of the waters this morning. Otherwise, no hazardous marine weather is expected through Tuesday.

SKYWARN. Skywarn activation is not requested. However weather spotters are encouraged to report rain and snow totals from today's weather system.

SGX WATCHES/WARNINGS/ADVISORIES. CA . Winter Weather Advisory until 8 AM PST this morning for San Bernardino County Mountains.

PZ . NONE.

PUBLIC . Moede AVIATION/MARINE . JJT


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 66 mi78 min ESE 1.9 52°F 1022 hPa51°F
SDBC1 - 9410170 - San Diego, CA 76 mi51 min 59°F1022.2 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
San Diego, Brown Field Municipal Airport, CA64 mi70 minSE 710.00 miOvercast50°F48°F93%1022.1 hPa

Link to 5 minute data for KSDM

Wind History from SDM (wind in knots)
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Last 24hrCalmSW6W5SW6SW9SW5SW8W9W6W5W4CalmSE5CalmSE3SE6SE7CalmSW3CalmSE5SE6SE7SE8
1 day agoSE6CalmW44W4W7W6W5W3CalmS4S4CalmE3S3E5SE4NE7E3CalmNE3NE4E6SE5
2 days agoE3Calm54NW3W6W7W7W5W3CalmCalmCalmCalmCalmE4SE4E5NE5SE5E5SE3SE5SE5

Tide / Current Tables for Ensenada, Baja California Norte, Mexico
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Ensenada
Click for Map
Fri -- 02:37 AM PST     1.41 meters High Tide
Fri -- 05:00 AM PST     Last Quarter
Fri -- 06:46 AM PST     Sunrise
Fri -- 09:17 AM PST     0.50 meters Low Tide
Fri -- 11:42 AM PST     Moonset
Fri -- 02:40 PM PST     0.99 meters High Tide
Fri -- 05:06 PM PST     Sunset
Fri -- 08:33 PM PST     0.39 meters Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.31.41.41.31.10.90.70.60.50.50.60.70.9110.90.80.60.50.40.40.50.7

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 (11,2,3,4)
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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.