Saturday, December7, 2019
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Marine Weather and Tides
National City, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:36AMSunset 4:43PM Saturday December 7, 2019 2:03 AM PST (10:03 UTC) Moonrise 3:12PMMoonset 3:10AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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- 141 Am Pst Sat Dec 7 2019
Today..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 ft at 17 seconds. SWell sw 3 ft. Chance of showers.
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft at 14 seconds. Showers likely.
Sun..Wind W 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft at 13 seconds. Chance of showers.
Sun night..Wind nw 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. SWell W 3 to 5 ft at 12 seconds. Chance of showers.
Mon..Wind nw to 10 kt in the morning...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft at 11 seconds. Slight chance of showers in the morning.
Mon night..Wind nw 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 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 variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 ft.
Wed..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft.
Wed night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft.
PZZ700 141 Am Pst Sat Dec 7 2019
Synopsis for the far southern california coast.. At 2 am pst...a 1021 mb high was 100 miles south-southwest of san diego and a 1018 low was near elko. Periods of light rain showers over the coastal waters will continue through Sunday. Northwest winds are expected to strengthen slightly Sunday into Monday, otherwise light and variable winds are expected. Combined seas of 6 to 8 feet are possible Saturday and Sunday.


7 Day Forecast for Marine Location Near National City, CA
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location: 32.67, -117.12     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 070534 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 934 PM PST Fri Dec 6 2019

SYNOPSIS. A moist, southwest flow aloft will bring periods of light rain as a weak storm system drops south across the state. Snowfall will be limited to higher mountain elevations as this is a warm system. The storm will move east on Monday, with clearing skies and a warming trend for next week. Further warming is on tap for next weekend as dry weather persists. At the beaches, a large west swell will bring high surf this weekend.

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

. Update .

The first wave of light rain, which came earlier than anticipated, has passed to the east this evening. This was associated with a shortwave (seen in water vapor imagery) and moisture advection. Rainfall amounts with that wave of rain were mostly in the 0.05-0.20 inch range west of the mountains.

There has been a break in the rain mid evening, but additional showers are developing and moving into Orange, far western Riverside and San Bernardino Counties. These will continue to expand southeast overnight. This weekend will feature extensive cloudiness with periods of rain, mostly on the light side but some moderate rain will occur as well. The heaviest amounts will occur along the coastal mountain slopes. This will be a warm storm system with snow limited to higher mountain elevation locations (snow levels 9,000-10,000 feet lowering to 6,500-7,000 feet by Sunday night).

. Update (Issued at 205 PM PST Fri Dec 6 2019). Quick update to increase POPS through this evening. Doppler radar shows a shield of rain entering Orange County extending south off the San Diego County coast. This area is moving northeast at about 35 mph. The radar bark is worse than the bite. Aircraft sounding data shows a dry layer in the lower levels, so some of the rain falling is evaporating. Upstream gauges over San Clemente Island show max rain over the past hour of 0.07". So this will be a light rain but most coast and valley locales do look to get wet late this afternoon through this evening. As such, increased POPS substantially to account for this expectation. Rainfall of trace-0.10 inches is expected through this evening west of the mountains and along the coastal mountain slopes.

. Previous Discussion (Issued at 1223 PM PST Fri Dec 6 2019) .

Satellite imagery at midday showed a thicker blanket of high clouds spreading NE across the area. In addition, the radar indicated some precipitation moving NE over the coastal waters. Some of this could make it into Orange and San Bernardino Diego Counties by late afternoon. The sfc pressure gradients from the deserts were still weak to moderate offshore, supporting NE winds below the passes with local gusts 25-35 MPH. Still, the sea breeze was evident into the western valley areas.

A storm system centered 500 miles west of Cape Mendocino today, will drift east through Saturday, and then drop south through Monday as a strong ridge builds off the Coast. Weak disturbances off the Pacific ahead of it will gather up some Pacific moisture, sparking some occasional light precip that will favor the coastal slopes. Upslope is generally weak though, so no heavy amounts are likely with no good atmospheric lift to squeeze it out. Snow levels will be quite high initially, above 8K FT through Saturday, then fall to around 7K FT by late Sunday.

The final trough axis passes through SoCal on Monday morning, so some light, scattered showers may continue into early Monday for San Diego County especially. Overall precip amounts of 1/4-1/2 inch are expected west of the mts, and 0.5 to 1.5 inches on the coastal slopes and higher terrain. For the deserts, less than one-quarter inch total. Several inches of snow are possible in the San Bernardino Mts by Mon morning above 7500 FT.

A highly amplified ridge develops early next week along the West Coast and keeps SoCal protected from activity in the westerlies through next week. Even though the ridge flattens, it strengthens further next weekend along 30N latitude. This will likley bring well above average temps to SoCal by next weekend, along with continued fair and dry weather.

AVIATION. 070530Z . Coasts/Valleys . Sct-BKN Cigs 2000-4000 ft MSL and vis 2-4 SM in areas of -RA through Sat. Low clouds will obscure terrain above 3000 ft MSL at times.

Deserts . Chance of -RA Sat. Cigs around 5000 ft MSL and vis 3-5SM possible in any areas of RA.

MARINE. Scattered rain showers through Sunday. Combined seas of 6 to 9 ft are expected Saturday afternoon through Sunday evening.

BEACHES. A High Surf Advisory remains in effect for long-period northwest swells of 14 to 18 seconds at the coasts of Southern California. The swells will start to build on Saturday, peaking Sunday morning, and subsiding by Monday morning. Surf of 6-9 ft is expected in San Diego County and 4-7 ft surf is expected on beaches prone to WNW swells in Orange County.

SGX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory from 4 AM Saturday to 4 AM PST Monday for Orange County Coastal Areas-San Diego County Coastal Areas.

PZ . NONE.

PUBLIC . Gregoria (Update)/10 (Prev Discussion) AVIATION/MARINE . Brotherton


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 4 mi52 min 62°F1019.7 hPa
46235 7 mi34 min 61°F2 ft
TIXC1 - Tijuana River Reserve, CA 7 mi79 min NNE 1 60°F 1021 hPa58°F
LJAC1 - 9410230 - La Jolla, CA 15 mi52 min Calm G 1 61°F 62°F1019.4 hPa
LJPC1 - La Jolla, CA (073) 15 mi44 min Calm G 1.9 1 ft
46254 16 mi36 min 61°F 62°F1 ft
46232 - Point Loma South, CA (191) 19 mi34 min 63°F2 ft
46258 21 mi34 min 63°F2 ft
46266 22 mi34 min 62°F2 ft
46225 - Torrey Pines Outer, CA (100) 23 mi34 min 60°F2 ft
46224 - Oceanside Offshore, CA (045) 40 mi34 min 63°F2 ft

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, North Island, Naval Air Station, CA5 mi72 minN 59.00 miLight Rain61°F57°F87%1019.9 hPa
San Diego, San Diego International-Lindbergh Field, CA5 mi73 minN 010.00 miLight Rain64°F60°F87%1020.6 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA6 mi68 minno data8.00 miOvercast0°F0°F%1020 hPa
San Diego, Brown Field Municipal Airport, CA10 mi71 minN 010.00 miOvercast62°F54°F75%1019.6 hPa
San Diego, Montgomery Field, CA11 mi71 minN 010.00 miOvercast62°F55°F78%1019.9 hPa
Gillespie Field Airport, CA14 mi69 minN 010.00 miOvercast59°F55°F88%1020 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA15 mi69 minWNW 510.00 miOvercast63°F55°F78%1019.8 hPa

Link to 5 minute data for KNZY

Wind History from NZY (wind in knots)
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Last 24hrCalmCalmW3CalmCalmCalmCalmE4S4S3SW8W7NW9N8N8S4S3CalmCalmNW5N4NW3N4N5
1 day agoCalmCalmCalmCalm--CalmNW3CalmCalmCalmW5NW7NW10NW10NW9N7N7N5CalmNW3N4CalmNW4N4
2 days agoE4SE4SE7SE6SE4CalmE3S4SW10S10SE10SE9SE9SE9S14S10S12S8CalmS4S4E3E4Calm

Tide / Current Tables for National City, San Diego Bay, California
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National City
Click for Map
Sat -- 02:10 AM PST     Moonset
Sat -- 06:18 AM PST     5.67 feet High Tide
Sat -- 06:37 AM PST     Sunrise
Sat -- 01:03 PM PST     0.99 feet Low Tide
Sat -- 02:11 PM PST     Moonrise
Sat -- 04:42 PM PST     Sunset
Sat -- 06:45 PM PST     4.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.21.52.33.34.45.25.65.654321.311.21.82.73.544.13.83.22.41.8

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
Click for Map
Sat -- 12:10 AM PST     0.00 knots Slack
Sat -- 02:10 AM PST     Moonset
Sat -- 03:37 AM PST     1.39 knots Max Flood
Sat -- 06:35 AM PST     -0.00 knots Slack
Sat -- 06:37 AM PST     Sunrise
Sat -- 09:45 AM PST     -1.58 knots Max Ebb
Sat -- 01:23 PM PST     0.00 knots Slack
Sat -- 02:11 PM PST     Moonrise
Sat -- 04:13 PM PST     1.05 knots Max Flood
Sat -- 04:42 PM PST     Sunset
Sat -- 06:51 PM PST     -0.00 knots Slack
Sat -- 09:44 PM PST     -1.25 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.10.511.31.41.10.5-0.3-1-1.5-1.6-1.3-0.8-0.20.40.810.90.5-0.1-0.7-1.2-1.2-1

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 (5,6,7,8)
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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 numerious 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.