Tuesday, September17, 2019 L-36.com


Marine Weather and Tides
Del Mar, CA

Version 3.4
NOTICE
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 6:32AMSunset 6:54PM Tuesday September 17, 2019 2:12 PM PDT (21:12 UTC) Moonrise 9:08PMMoonset 9:34AM Illumination 86% 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- 137 Pm Pdt Tue Sep 17 2019
Tonight..Wind nw 10 kt with gusts to 15 kt in the evening... Becoming 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 12 seconds.
Wed..Wind variable less than 10 kt...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 3 ft at 12 seconds.
Wed night..Wind W to 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 2 to 3 ft at 12 seconds.
Thu..Wind sw 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less...becoming 3 ft in the afternoon. Mixed swell W 2 to 3 ft at 6 seconds and S 2 to 3 ft at 11 seconds.
Thu night..Wind W to 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 3 to 4 ft at 6 seconds and sw 2 ft at 10 seconds.
Fri..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 1 to 2 ft.
Fri night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 1 to 2 ft.
Sat..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft and sw 1 to 2 ft.
Sat night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft and S 1 to 2 ft.
Sun..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft and sw 2 ft.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and sw 2 ft.
PZZ700 137 Pm Pdt Tue Sep 17 2019
Synopsis for the far southern california coast.. A weak coastal eddy will develop overnight. Light to moderate onshore flow expected for the second half of the week with an increase across the outer waters on Thursday.


7 Day Forecast for Marine Location Near Del Mar city, CA
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location: 32.9, -117.25     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 171641
afdsgx
area forecast discussion
national weather service san diego ca
941 am pdt Tue sep 17 2019

Synopsis
Low pressure over the west will bring cooler weather this week,
with more extensive coastal clouds during nights and mornings.

Gusty winds are expected in parts of the mountains and deserts
each afternoon and evening. The low pressure weakens Friday,
bringing warmer weather and less coastal cloudiness this weekend.

Discussion For extreme southwestern california including orange...

san diego... Western riverside and southwestern san bernardino
counties...

Update...

patches of low cloudiness have dissipated with sunshine now
prevailing across socal this morning. Temps early this morning
ranged from the 30s in parts of the eastern san bernardinos to the
70s in the lower deserts with even a few stations near 80.

A weak offshore pressure gradient will become onshore today and
strengthen through Thursday. This will lead to cooler conditions
along with afternoon and evening gusty winds along the desert
mountain slopes as well as through and below the mountain passes
(desert side). No significant changes were made to the forecast
this morning.

Previous discussion (issued at 220 am pdt Tue sep 17 2019)...

patches of coastal low clouds are trying to gain traction this
morning, but are struggling to generate a uniform cloud cover
anywhere. We do expect most coastal areas will awake to some gray
this morning. Higher up and farther inland, the last vestiges of
yesterday's moisture in the form of mountain wave clouds are
exiting stage right. A trough of low pressure will move through
the west this morning. On its heels will be another deeper trough
rolling through on Thursday. Because of that we're looking at a
few days of cooler than average weather across socal. Thursday
appears to be the coolest, with MAX temps 5 to 15 degrees below
average, except at the coast. The marine layer, aided by an
intermittent coastal eddy, should be deep enough to get some
coastal clouds into parts of inland valleys each night morning.

However, the cooler air aloft will weaken the marine inversion, so
cloud coverage will probably not be uniform. Each trough will
boost onshore flow and generate winds across mountain ridges,
through passes and into adjacent deserts each afternoon and
evening. Top gusts should exceed 40 mph in the favored locations,
particularly Thursday evening. On Friday a touch of offshore flow
develops in the wake of Thursday's trough, but only some weak
offshore breezes are expected in the foothills. For the weekend
high pressure really doesn't build; it's more of a continued
weakening of the trough. That will bring warmer weather Friday
through Sunday and a decrease to the nocturnal coastal cloudiness.

Next week is highly uncertain with models and ensemble solutions
all over the map. Some features of the 00z runs in particular are
pretty entertaining. With higher confidence we can say the general
pattern keeps a long wave trough pattern over the west next week,
keeping our weather near or on the cool side of average, a
fitting and seasonal start to fall.

Aviation
171445z... Coast valleys... Patchy low clouds are beginning to
scatter,VFR conditions expected for rest of today. Patchy low
clouds with bases 1200-1800 ft msl will redevelop along the coast
after 08z wed, and gradually extend inland. Intermittent CIGS will
impact coastal TAF sites 10z-16z wed. Only vis restrictions will
occur on elevated coastal terrain obscured by clouds.

Mountains deserts...VFR conditions prevailing today. Near the
surface, gusty W winds 20-30 kt primarily over the mountains and
through passes and canyons.

Marine
Nw winds will strengthen slightly on Thursday evening, when some
locations over the outer waters near san clemente island may see
gusts approaching 20 kt at times. Otherwise, no hazardous boating
conditions are expected through Saturday.

Fire weather
Gusty and locally strong onshore winds are expected each afternoon
and evening today through Thursday. Top gusts should reach 35 to
45 mph. These local winds will combine with low inland humidity to
elevate fire weather conditions for favored pockets along mountain
ridges, through mountain passes and into adjacent deserts.

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... Gregoria (update) mm (prev discussion)
aviation marine... Co


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LJAC1 - 9410230 - La Jolla, CA 2 mi60 min W 6 G 8 70°F 68°F1014 hPa
46254 2 mi44 min 71°F 74°F2 ft
LJPC1 - La Jolla, CA (073) 2 mi52 min W 7 G 11 2 ft
46225 - Torrey Pines Outer, CA (100) 8 mi42 min 73°F4 ft
SDBC1 - 9410170 - San Diego, CA 13 mi60 min 73°F1014.1 hPa
46258 17 mi42 min 73°F4 ft
46224 - Oceanside Offshore, CA (045) 23 mi42 min 73°F3 ft
46235 23 mi42 min 69°F3 ft
TIXC1 - Tijuana River Reserve, CA 23 mi87 min W 8 74°F 1015 hPa65°F
46232 - Point Loma South, CA (191) 27 mi42 min 73°F3 ft

Wind History for La Jolla, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Diego, Miramar MCAS/Mitscher Field Airport, CA5 mi77 minWNW 910.00 miFair81°F61°F51%1013.7 hPa
San Diego, Montgomery Field, CA8 mi79 minWSW 910.00 miFair76°F60°F58%1014 hPa
San Diego, San Diego International-Lindbergh Field, CA12 mi21 minW 810.00 miA Few Clouds75°F62°F64%1014.4 hPa
San Diego, North Island, Naval Air Station, CA14 mi80 minWSW 910.00 miA Few Clouds74°F63°F69%1014.2 hPa
Gillespie Field Airport, CA16 mi25 minWSW 1110.00 miClear82°F57°F42%1013.9 hPa
Carlsbad, McClellan-Palomar Airport, CA17 mi79 minSW 710.00 miFair75°F62°F64%1013.9 hPa
Ramona, Ramona Airport, CA20 mi79 minWSW 910.00 miFair85°F48°F28%1013.4 hPa
Oceanside, Oceanside Municipal Airport, CA23 mi80 minW 910.00 miFair77°F62°F60%1014 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA23 mi76 minW 710.00 miA Few Clouds74°F61°F64%1014.6 hPa

Link to 5 minute data for KNKX

Wind History from NKX (wind in knots)
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Last 24hrW8W9NW7W5W3W4W5W3W3W4SW3NW3CalmE5CalmW3CalmCalmN43SW56W9W9
1 day agoNW8NW8NW7NW5W4W4W4CalmCalmCalmCalmCalmSW4CalmCalmCalmCalmNE3S4S5W96W8W6
2 days agoNW10NW10NW7NW6NW5CalmCalmCalmCalmNE3NE5CalmNE3CalmNE5E8NW3NE3Calm3N5W7W8W9

Tide / Current Tables for La Jolla, Scripps Pier, California
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La Jolla
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Tue -- 05:06 AM PDT     1.23 feet Low Tide
Tue -- 06:33 AM PDT     Sunrise
Tue -- 09:34 AM PDT     Moonset
Tue -- 11:21 AM PDT     4.96 feet High Tide
Tue -- 05:43 PM PDT     1.22 feet Low Tide
Tue -- 06:52 PM PDT     Sunset
Tue -- 09:07 PM PDT     Moonrise
Tue -- 11:43 PM PDT     4.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.53.932.21.51.21.422.93.84.54.94.94.43.62.61.81.31.21.62.22.93.64.1

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Tue -- 02:45 AM PDT     -1.49 knots Max Ebb
Tue -- 05:47 AM PDT     0.00 knots Slack
Tue -- 06:33 AM PDT     Sunrise
Tue -- 08:41 AM PDT     1.26 knots Max Flood
Tue -- 09:33 AM PDT     Moonset
Tue -- 11:49 AM PDT     -0.00 knots Slack
Tue -- 03:06 PM PDT     -1.51 knots Max Ebb
Tue -- 06:16 PM PDT     0.00 knots Slack
Tue -- 06:52 PM PDT     Sunset
Tue -- 09:02 PM PDT     1.08 knots Max Flood
Tue -- 09:07 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.3-0.9-1.4-1.5-1.2-0.60.20.81.21.210.5-0.1-0.8-1.3-1.5-1.4-0.9-0.20.50.91.10.90.6

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 (17,4,5,8)
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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.