Thursday, April2, 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 6:32AMSunset 7:10PM Thursday April 2, 2020 9:20 AM PDT (16:20 UTC) Moonrise 1:18PMMoonset 2:56AM Illumination 72% Phase: Waxing Gibbous; Moon at 9 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- 211 Am Pdt Thu Apr 2 2020
Today..Wind sw 10 kt. Wind waves 2 ft or less. SWell W 4 to 5 ft at 10 seconds.
Tonight..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft at 10 seconds.
Fri..Wind variable less than 10 kt...becoming sw 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. SWell W 3 to 4 ft at 9 seconds.
Fri night..Wind W 10 kt with gusts to 15 kt... Becoming sw after midnight. Wind waves 2 ft or less. SWell W 3 to 5 ft at 10 seconds.
Sat..Wind sw 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft at 9 seconds.
Sat night..Wind W 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft.
Sun..Wind variable less than 10 kt...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 4 ft. Slight chance of showers.
Sun night..Wind sw 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft. Chance of showers.
Mon..Wind W 10 kt with gusts to 20 kt. Wind waves 3 ft in the morning...becoming 2 ft or less. SWell W 3 to 4 ft. Showers likely.
Mon night..Wind W 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft. Chance of showers.
PZZ700 211 Am Pdt Thu Apr 2 2020
Synopsis for the far southern california coast.. At 2 am, a 1027 mb high was 600 nm west of san francisco and a 1003 mb low was over las vegas. A 1012 mb low extending from the channel islands to catalina anchored a coastal eddy. The eddy circulation will continue through Saturday. Brisk northwest winds with occasional gusts exceeding 20 kts are expected around san clemente island for a few hours each evening today and Friday. Onshore flow increases Sunday into Monday, with showers and a cold front set to move through the coastal waters Monday.


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


Area Discussion for - San Diego, CA
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FXUS66 KSGX 021555 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 855 AM PDT Thu Apr 2 2020

SYNOPSIS. A coastal eddy will maintain a deep marine layer into Saturday with night and morning coastal low clouds spreading onto the coastal mountain slopes. Cool but fair weather continues into Saturday. A low pressure system will move slowly southward just off the California coast for Sunday through Tuesday, then slowly inland for Wednesday and Thursday. This is expected to bring periods of precipitation to portions of southern California for Sunday into Thursday with well below average high temperatures.

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

The marine layer deepened substantially this morning, spilling through the mountain passes and even into the high desert. The eddy remains in place and while there are signs of breaks in the clouds on satellite, they will be slow to clear, with some areas possibly remaining cloudy through the day. Better clearing is expected on Friday as the eddy drifts southwest and a weak passing trough weakens the marine inversion somewhat. Extensive low clouds will follow for Friday night into Saturday as the eddy strengthens again. Mild weather with highs near to slightly below normal will continue into Saturday.

A closed low pressure system centered off the northern California coast on Sunday will move slowly southward through the early part of the week. There is some spread in the position of the center of the upper low for Monday and Tuesday with the non-GFS solutions still fairly close on Tuesday. At that time, the GFS ensemble mean is close to the model consensus with the operational GFS the faster and more eastern outlier. The upper low may drift slowly toward the southeast into Wednesday, then move slowly eastward with increasing spread in the timing for Wednesday into Thursday.

From Sunday into Thursday, rainfall could range from 1 to 1.5 inches near the coast to 2.5 to 3.5 inches in the mountains with local amounts to 6 inches in the San Bernardino mountains. In the deserts, rainfall of one half to one inch is possible in high deserts areas with less than one quarter inch in the lower deserts.

Confidence is lower on when the more significant periods of precipitation will occur. While snow could fall as low as 4000 to 4500 feet at times, the more significant snowfall will be mostly above 5500 feet.

High temperatures will be well below average for Sunday through Thursday with Monday through Wednesday the coolest days with high temperatures 10 to 15 degrees below average except towards the coast.

AVIATION. 021500Z . Coast/Valleys . Widespread low clouds with bases 1500-3500 ft MSL and tops 4000-4500 ft MSL filling the coastal basin and into mountain passes. Foothills between those levels obscured. SCT conditions expected for most areas by 18Z. Areas of BKN low clouds may linger along the coast today. Low clouds to move ashore after 02Z, especially KSAN/KCRQ, and after 05Z in KSNA. Clouds 1500-2000 feet MSL with tops 2500 feet expected to fill most of the coastal basin overnight into Friday.

Mountains/Deserts . Westerly winds with gusts 25-45 kt will continue over the mountains and into the adjacent desert slopes this morning, beginning to weaken around 20Z. Strongest winds will be through passes and on the desert slopes. Areas of LLWS and moderate up/downdrafts are likely over and east of the mtns. Low clouds in high desert adjacent to mountains this morning, otherwise mostly clear today and tonight.

MARINE. Tonight and Friday evening, periods of breezy northwest winds with gusts occasionally exceeding 20 kts are expected around San Clemente Island. An incoming cold front is expected to produce areas of showers starting as early as Sunday, with most widespread rain expected Monday/Tuesday.

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 . SS/17 AVIATION/MARINE . CO


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 3 mi155 min SSW 2.9 56°F 1014 hPa52°F
SDBC1 - 9410170 - San Diego, CA 13 mi98 min 63°F1014.1 hPa
46232 - Point Loma South, CA (191) 15 mi110 min 60°F6 ft
46254 24 mi80 min 60°F3 ft
LJAC1 - 9410230 - La Jolla, CA 24 mi98 min S 5.1 G 8 58°F 57°F1013.7 hPa
LJPC1 - La Jolla, CA (073) 24 mi120 min S 2.9 G 6 3 ft
46258 25 mi80 min 61°F6 ft
46266 30 mi140 min 58°F 60°F3 ft
46225 - Torrey Pines Outer, CA (100) 31 mi80 min 58°F4 ft
46086 - San Clemente Basin 48 mi80 min NW 3.9 G 5.8 59°F 1014.4 hPa50°F
46224 - Oceanside Offshore, CA (045) 48 mi80 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 mi84 minENE 67.00 miMostly Cloudy60°F52°F75%1014.7 hPa
San Diego, Brown Field Municipal Airport, CA9 mi27 minSSW 810.00 miMostly Cloudy59°F52°F78%1014.6 hPa
San Diego, North Island, Naval Air Station, CA12 mi88 minS 78.00 miMostly Cloudy59°F51°F75%1014.2 hPa
San Diego, San Diego International-Lindbergh Field, CA14 mi29 minS 810.00 miMostly Cloudy61°F54°F78%1015.4 hPa
San Diego, Montgomery Field, CA21 mi27 minS 69.00 miOvercast59°F50°F72%1014.6 hPa
Gillespie Field Airport, CA23 mi33 minVar 55.00 miFog/Mist57°F51°F82%1014.6 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA24 mi85 minS 610.00 miOvercast60°F52°F75%1013.7 hPa

Link to 5 minute data for KNRS

Wind History from NRS (wind in knots)
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Last 24hrN7N10SW12S13SW13SW14SW14S13S12
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S9S9SE11SE6SE7--------------E6E6
1 day agoE10NE10N7W12W13W13W13W5--SW7W4W4SW4CalmCalm--------------E5N5
2 days agoE4N4N5W10W12W10W8NW9NW9
G12
NW7NW7W5NW5CalmCalmCalm------------E6E6

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.


Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
Click for Map
Thu -- 02:50 AM PDT     0.54 knots Max Flood
Thu -- 02:56 AM PDT     Moonset
Thu -- 05:17 AM PDT     -0.00 knots Slack
Thu -- 06:34 AM PDT     Sunrise
Thu -- 09:14 AM PDT     -1.56 knots Max Ebb
Thu -- 01:08 PM PDT     0.00 knots Slack
Thu -- 01:17 PM PDT     Moonrise
Thu -- 04:28 PM PDT     1.19 knots Max Flood
Thu -- 07:09 PM PDT     Sunset
Thu -- 07:39 PM PDT     -0.00 knots Slack
Thu -- 10:03 PM PDT     -0.75 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.30.50.50.40.1-0.4-0.9-1.3-1.6-1.5-1.1-0.6-0.10.50.91.21.10.90.4-0.2-0.6-0.7-0.6

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 (12,3,4,5)
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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.