Friday, April10, 2020
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Marine Weather and Tides
Imperial Beach, 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 6:22AMSunset 7:16PM Friday April 10, 2020 10:47 AM PDT (17:47 UTC) Moonrise 10:36PMMoonset 8:27AM Illumination 92% Phase: Waning Gibbous; Moon at 18 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 Fri Apr 10 2020
Today..Wind S 10 to 15 kt. Wind waves 2 ft or less. Mixed swell sw 2 to 3 ft at 6 seconds and S 3 ft at 15 seconds. Showers in the morning. Slight chance of tstms. Showers likely in the afternoon.
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 3 ft at 6 seconds and S 3 ft at 14 seconds. Chance of showers in the evening.
Sat..Wind variable less than 10 kt...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 3 ft at 6 seconds.
Sat night..Wind W 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. SWell W 3 ft at 6 seconds.
Sun..Wind sw 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 6 seconds.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 ft.
Mon..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 ft.
Mon night..Wind nw 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 ft.
Tue..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 ft.
Tue night..Wind nw 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft.
PZZ700 202 Am Pdt Fri Apr 10 2020
Synopsis for the far southern california coast.. At 2 am, a 1015 mb low covered the southern california bight producing a counter-clockwise wind circulation. The final day of our storm today will produce southwest winds with isolated gusts exceeding 20 kts. Showers will continue and there is a small chance of Thunderstorms today. Fair weather and weak onshore flow is expected Saturday through Tuesday.


7 Day Forecast for Marine Location Near Imperial Beach, CA
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location: 32.53, -117.14     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 101608 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 908 AM PDT Fri Apr 10 2020

SYNOPSIS. A low pressure system moving inland through southern California will bring widespread moderate to locally heavy rain and mountain snowfall today, with a chance of thunderstorms. Showers will decrease in the evening and end overnight. Dry and little warmer for Saturday. Breezy and cooler for Sunday and Monday, then dry and warmer for Tuesday through Thursday.

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

Moderate to locally heavy rain was occurring west of the mountains today. Peak rates were around 1/2 inch per hour based on available rain gages. Satellite imagery shows a well defined jet streak arcing over the CA Bight and supporting convective clouds well out to sea. No thunderstorms have been detected as of 8 AM PDT. Widespread rainfall totals over the past 12 hours have ranged from 0.8-1.80 inches from southern O.C. and Riverside counties, across western San Diego County. Snow continues to fall in the mountains, mostly light, with a morning snow level between 4500 and 5000 FT. A Winter Storm Warning remains in effect for the northern mountains, and a Winter Weather Advisory is in effect for the San Diego County Mts.

Our 12Z Miramar sounding was nearly saturated up through 14K FT and looked fairly stable. PW was 0.84 inch. Based on satellite trends, convective showers will continue to stream inland for several more hours, mainly across San Diego and SW Riverside Counties. Heavier convective showers should reach the southern mountains and deserts as well by midday or this afternoon. The San Diego River is forecast reach flood stage soon, and a Flood Warning is in effect there. Farther to the north, the Santa Margarita River is above Action Stage and should peak just below flood stage on Camp Pendleton today.

Scattered showers should continue into the evening, and overnight in the southern mountains, but Saturday is still forecast to be partly cloudy and a bit warmer. There is a chance for some light precipitation to develop over and west of the mountains on Sat night into Sunday once again, but amounts, if any, should be light.

After Monday, a dry northwest flow pattern sets in with a ridge just off the West Coast. Look for dry and warmer conditions to prevail much of the coming week. No forecast changes this morning.

AVIATION. 101530Z . Coast/Valleys/Mountains . Heaviest SHRA expected to impact KCRQ/KSAN through the day. Expect cigs 500-1500 feet MSL and vis to 1-4SM at times in the heavier rain. Otherwise, cigs of 2500 ft MSL expected. SHRA should be overall less intense at KSNA/KONT/KSBD with cigs 2500-3500 ft MSL and visibilities 4-6SM. Higher terrain will be obscured. Activity will become more scattered in nature for KCRQ/KSAN after 00Z with ceilings improving to 2500-3500 ft MSL. Winds 5-15 kts at the terminals today decreasing to around 5 kts after 00Z.

Deserts . Expect periods of -RA through this evening with ceilings generally above 3500 ft MSL. The rain should end late tonight.

MARINE. Occasional wind gusts around 20 kts expected today, but conditions will remain below SCA criteria. There is also a slight chance of thunderstorms today. No hazardous marine weather is expected tonight through Tuesday.

BEACHES. There is a slight chance of thunderstorms today. Please check with your local authorities on potential beach closures.

HYDROLOGY. A Flash Flood Watch continues across much of the area. Expect isolated heavy showers to continue through the day due to the incoming upper-low center and favorable jet position. Most of the heavier rainfall amounts and flood potential looks to be over San Diego and SW Riverside counties. Peak rainfall rates of 1/2 inch/hour still possible with a PW near one inch. Isolated thunderstorms are still possible through the day and early evening.

Widespread moderate runoff will continue due to ongoing showers and saturated soils. Moderate flow in the area rivers will continue today, with some flooding expected on the San Diego in Mission Valley.

SKYWARN. Skywarn activation is requested.

SGX WATCHES/WARNINGS/ADVISORIES. CA . Winter Weather Advisory until 8 PM PDT this evening for San Diego County Mountains.

Flash Flood Watch through 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 8 PM PDT this evening for Riverside County Mountains-San Bernardino County Mountains.

PZ . NONE.



PUBLIC/HYDROLOGY . 10 AVIATION/MARINE/BEACHES . Moreland


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 3 mi62 min SSW 5.1 54°F 1017 hPa53°F
SDBC1 - 9410170 - San Diego, CA 13 mi53 min 63°F1015.7 hPa
46232 - Point Loma South, CA (191) 15 mi47 min 60°F5 ft
46254 24 mi47 min 60°F3 ft
LJAC1 - 9410230 - La Jolla, CA 24 mi53 min S 7 G 12 56°F 60°F1015 hPa
LJPC1 - La Jolla, CA (073) 24 mi27 min S 8 G 15 3 ft
46258 25 mi49 min 60°F5 ft
46266 30 mi77 min 55°F 60°F4 ft
46225 - Torrey Pines Outer, CA (100) 31 mi47 min 58°F5 ft
46086 - San Clemente Basin 48 mi27 min WSW 12 G 16 56°F 1015 hPa53°F
46224 - Oceanside Offshore, CA (045) 48 mi47 min 60°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
Imperial Beach Naval Outlying Field - Ream Field, CA4 mi51 minSSW 123.00 miRain Fog/Mist58°F55°F90%1016.4 hPa
San Diego, Brown Field Municipal Airport, CA9 mi54 minS 124.00 miLight Rain Fog/Mist53°F50°F89%1016 hPa
San Diego, North Island, Naval Air Station, CA12 mi55 minS 106.00 miLight Rain Fog/Mist56°F53°F90%1015.6 hPa
San Diego, San Diego International-Lindbergh Field, CA14 mi56 minS 8 G 194.00 miLight Rain Fog/Mist58°F55°F93%1016.3 hPa
San Diego, Montgomery Field, CA21 mi54 minSSE 84.00 miLight Rain Fog/Mist54°F51°F90%1015.6 hPa
Gillespie Field Airport, CA23 mi60 minVar 62.50 miRain54°F51°F94%1016.3 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA24 mi52 minSSE 73.00 miLight Rain Fog/Mist55°F55°F100%1015.3 hPa

Link to 5 minute data for KNRS

Wind History from NRS (wind in knots)
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SW11SW8S5S4S4S4----------------S9E9S12
1 day agoS10SE10S10S11SW11S14
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SW8SW8SW4SW93NE5--------------SE5E5E7E7
2 days agoE6S8S10E13E13S17
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S8S8S4SW33--------------E5N6SE7S7

Tide / Current Tables for National City, San Diego Bay, California
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National City
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Fri -- 06:05 AM PDT     -1.08 feet Low Tide
Fri -- 06:24 AM PDT     Sunrise
Fri -- 08:27 AM PDT     Moonset
Fri -- 12:16 PM PDT     4.71 feet High Tide
Fri -- 05:44 PM PDT     1.09 feet Low Tide
Fri -- 07:15 PM PDT     Sunset
Fri -- 10:36 PM PDT     Moonrise
Fri -- 11:54 PM PDT     6.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.55.542.20.6-0.6-1.1-0.80.31.73.14.24.74.53.92.91.91.21.11.62.645.36.2

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
Click for Map
Fri -- 02:50 AM PDT     -2.48 knots Max Ebb
Fri -- 06:17 AM PDT     0.00 knots Slack
Fri -- 06:24 AM PDT     Sunrise
Fri -- 08:27 AM PDT     Moonset
Fri -- 09:16 AM PDT     1.68 knots Max Flood
Fri -- 12:25 PM PDT     -0.00 knots Slack
Fri -- 03:08 PM PDT     -1.45 knots Max Ebb
Fri -- 05:54 PM PDT     0.00 knots Slack
Fri -- 07:15 PM PDT     Sunset
Fri -- 09:03 PM PDT     1.60 knots Max Flood
Fri -- 10:36 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.6-1.6-2.3-2.5-2.1-1.3-0.30.71.41.71.61.10.4-0.5-1.1-1.4-1.3-0.70.10.81.41.61.40.9

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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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.