Wednesday, April8, 2020
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Marine Weather and Tides
National City, 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 6:25AMSunset 7:14PM Wednesday April 8, 2020 12:14 PM PDT (19:14 UTC) Moonrise 8:15PMMoonset 7:07AM Illumination 99% Phase: Waning Gibbous; Moon at 16 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- 201 Am Pdt Wed Apr 8 2020
Today..Wind sw to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 3 to 4 ft at 17 seconds. Chance of showers and slight chance of tstms.
Tonight..Wind sw 10 kt with gusts to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 3 to 4 ft at 17 seconds. Showers likely.
Thu..Wind sw 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 8 seconds and S 3 to 4 ft at 16 seconds. Showers likely.
Thu night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 6 seconds and S 3 ft at 15 seconds. Chance of showers.
Fri..Wind variable less than 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 6 seconds and S 3 ft at 15 seconds. Chance of showers in the morning, then slight chance of showers in the afternoon.
Fri night..Wind W 10 to 15 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.
Sun..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 ft.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 ft.
PZZ700 201 Am Pdt Wed Apr 8 2020
Synopsis for the far southern california coast.. At 2 am, a 1027 mb high was 600 nm west of san francisco and a 1012 mb low was over lake mead. Showers are expected through Friday morning, with a slight chance of Thunderstorms this afternoon. Mostly light to moderate winds will prevail through the weekend.


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 081528 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 828 AM PDT Wed Apr 8 2020

SYNOPSIS. A low pressure system centered south of Point Conception will move very slowly eastward through Friday, then move more rapidly eastward and weaken for Friday night and Saturday. Periods of showers will continue into Friday, ending Friday night. Saturday through Monday will be warmer and drier, but with high temperatures remaining below average. Then warmer and dry for Tuesday and Wednesday.

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

The upper level low remains centered near Point Conception this morning. A short wave trough lifting north on the east side of the low along with weak mid-level convergence produced a large band of precipitation over Southern CA. This band will shift east and north through the day as another short wave trough moves through the base of the low and pushes it out. Colder air aloft associated with the low center will inch closer this afternoon, and combined with daytime heating will lead to greater instability and a chance of heavier showers and thunderstorms, especially for the coastal and valley areas.

The low will move in a counter-clockwise loop tonight through Friday, first heading towards Las Vegas Thursday morning before turning around and making a return trip to southeast CA Thursday night and Friday, finally heading east into AZ Friday night. Moisture wrapping around the low even as it lifts northeast will continue showers over southern CA, although it now looks like the main band will be positioned over LA County and areas west, limiting any snow and desert flooding impacts over San Bernardino County. Most of the area will just continue to see scattered light to moderate showers into Thursday and Friday before it all comes to an end Friday night.

High temperatures are expected to be coolest for today and Thursday with high temperatures for some inland areas 20 to 25 degrees below average. Saturday through Monday is expected to be mostly dry and a little warmer but with high temperatures remaining below average. Tuesday and Wednesday are expected to be dry and warmer with high temperatures possibly warming to around average.

AVIATION. 081515Z . Coast/Valleys/Mountains . Periods of SHRA today and tonight. SHSN in the mountains above 4500 ft. BKN-OVC cloud bases will vary between 3000-6000 feet MSL. In areas of RA cigs 800-1800 ft MSL and vis 2-5SM possible. Intermittent periods of SCT conditions along the coast possible between 18-00Z. Higher terrain will be obscured much of the time. There is a chance of isolated thunderstorms mainly between 18-00Z today.

Deserts . BKN-OVC clouds with bases 5000-7000 ft MSL and periods of RA/SHRA today. Locally bases could drop to 3000-4000 ft MSL with vis 2-5 SM in areas of RA. There is a chance of isolated thunderstorms from late this morning into the afternoon. SCT conditions expected after 01Z Thu.

MARINE. There is a slight chance of thunderstorms this afternoon. Otherwise, no hazardous marine weather is expected through Sunday.

BEACHES. There is a slight chance of thunderstorms producing lightning strikes this afternoon.

HYDROLOGY. Through Friday, additional rainfall is expected to range from around 1 inch near the coast to 1.5 to 2.5 inches in the mountains with one half to three quarters inch for high desert areas and around one quarter to one half inch for low desert areas.

The potential for urban and small stream flooding will continue today along with the possibility of isolated flash flooding with thunderstorms or where showers track repeatedly across the same area.

Snow levels will be near 4500 to 5000 feet into Thursday morning, then rise to 5000 to 5500 feet for Thursday afternoon through Friday. 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. In San Diego County, 3 to 6 inches is possible above 5500 feet with 1 to 3 inches down to 5000 feet.

SKYWARN. Skywarn activation may be requested this afternoon.

SGX WATCHES/WARNINGS/ADVISORIES. CA . Winter Weather Advisory until noon PDT Thursday for San Diego County Mountains.

Flash Flood Watch until 7 PM PDT this 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 Friday for Riverside County Mountains-San Bernardino County Mountains.

PZ . NONE.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 4 mi62 min 63°F1017.3 hPa
TIXC1 - Tijuana River Reserve, CA 7 mi89 min SSW 8 57°F 1018 hPa50°F
LJAC1 - 9410230 - La Jolla, CA 15 mi62 min S 8 G 12 53°F 60°F1017.1 hPa
LJPC1 - La Jolla, CA (073) 15 mi54 min S 8 G 16 2 ft
46254 16 mi44 min 60°F2 ft
46232 - Point Loma South, CA (191) 19 mi44 min 59°F5 ft
46258 21 mi44 min 60°F6 ft
46266 22 mi134 min 55°F 61°F3 ft
46225 - Torrey Pines Outer, CA (100) 23 mi44 min 58°F4 ft
46224 - Oceanside Offshore, CA (045) 40 mi44 min 62°F4 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 mi82 minS 1210.00 miMostly Cloudy58°F48°F72%1017.2 hPa
San Diego, San Diego International-Lindbergh Field, CA5 mi83 minSSW 910.00 miMostly Cloudy59°F53°F81%1017.9 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA6 mi78 minS 1010.00 miMostly Cloudy57°F51°F81%1017.8 hPa
San Diego, Brown Field Municipal Airport, CA10 mi81 minSSW 710.00 miLight Rain55°F46°F72%1017.1 hPa
San Diego, Montgomery Field, CA11 mi81 minSW 12 G 1610.00 miOvercast56°F45°F67%1016.8 hPa
Gillespie Field Airport, CA14 mi87 minS 1110.00 miOvercast57°F44°F63%1016.9 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA15 mi79 minW 64.00 miLight Rain53°F48°F83%1016.6 hPa

Link to 5 minute data for KNZY

Wind History from NZY (wind in knots)
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Last 24hrS11S15S22S19S25
G30
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SW8NW7NW6N7NE6N8NE4NE5E3NE4S4CalmSE8S9S12S12S9
1 day agoS21S22
G28
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SW4CalmW5W5SE3E3E5NE6NE7NE5E4S3SE3S6
2 days agoSW9SW8SW10W9SW7
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SW7S6S8S9S8SW11--S11S11S9SW11S14S10S12S17S17S19S21
G26
S17

Tide / Current Tables for National City, San Diego Bay, California
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National City
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Wed -- 04:27 AM PDT     -0.94 feet Low Tide
Wed -- 06:26 AM PDT     Sunrise
Wed -- 07:06 AM PDT     Moonset
Wed -- 10:31 AM PDT     5.91 feet High Tide
Wed -- 04:32 PM PDT     -0.18 feet Low Tide
Wed -- 07:13 PM PDT     Sunset
Wed -- 08:15 PM PDT     Moonrise
Wed -- 10:38 PM PDT     6.74 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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53.31.4-0-0.8-0.80.11.73.44.95.85.853.72.10.8-0.1-0.10.72.245.66.66.7

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
Click for Map
Wed -- 01:26 AM PDT     -2.54 knots Max Ebb
Wed -- 04:39 AM PDT     0.00 knots Slack
Wed -- 06:27 AM PDT     Sunrise
Wed -- 07:07 AM PDT     Moonset
Wed -- 07:42 AM PDT     2.12 knots Max Flood
Wed -- 10:44 AM PDT     -0.00 knots Slack
Wed -- 01:43 PM PDT     -2.24 knots Max Ebb
Wed -- 04:45 PM PDT     0.00 knots Slack
Wed -- 07:14 PM PDT     Sunset
Wed -- 07:52 PM PDT     2.13 knots Max Flood
Wed -- 08:16 PM PDT     Moonrise
Wed -- 10:53 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-1.9-2.5-2.4-1.8-0.80.41.422.11.70.8-0.3-1.4-2.1-2.2-1.8-0.80.31.31.92.11.81-0.1

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.
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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.