Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Hermosa Beach, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:44AMSunset 7:56PM Thursday May 24, 2018 6:58 AM PDT (13:58 UTC) Moonrise 3:21PMMoonset 3:06AM Illumination 73% 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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PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 228 Am Pdt Thu May 24 2018
Today..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 3 ft at 16 seconds.
Tonight..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 12 seconds and S 3 ft at 15 seconds.
Fri..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 2 ft at 14 seconds.
Fri night..Western portion, W winds 20 to 25 kt. Elsewhere, sw winds 15 to 20 kt becoming W 5 to 10 kt after midnight. Combined seas 4 to 6 ft dominant period 11 seconds.
Sat..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 11 seconds and S 2 ft at 14 seconds.
Sat night..W winds 15 to 20 kt, becoming sw 5 to 10 kt after midnight. Wind waves 2 to 3 ft. W swell 4 to 6 ft.
Sun..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
Mon..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
PZZ600 228 Am Pdt Thu May 24 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z...or 2 am pdt...a 1018 mb surface high was located 100 nm S of point conception and a 1012 mb surface low was near las vegas. A long period southerly swell will continue to move through the waters into early Friday.

7 Day Forecast for Marine Location Near Hermosa Beach, CA
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location: 33.85, -118.4     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 241314
afdlox
area forecast discussion
national weather service los angeles oxnard ca
614 am pdt Thu may 24 2018

Synopsis 24 340 am.

Low pressure moving across the eastern pacific will push into
central california Saturday. Skies will generally be mostly
cloudy through early Saturday, except partly cloudy in the
antelope valley. There is a chance of showers north of point
conception tonight and Friday, with patchy night through morning
drizzle elsewhere. It will be quite cool through Friday, then
there will be a warming trend this weekend into early next week.

Short term (tdy-sat) 24 406 am.

Very deep marine layer across the region again early this morning,
and the depth has risen to 5000 feet. With the deep marine layer
and some cyclonic low level flow, there could be some patchy
drizzle this morning, especially in the foothills. Models show
plenty of moisture lingering, so expect skies to remain mostly
cloudy west of the mountains today. If there is any clearing, it
would mostly likely be across the coastal plain. MAX temps will be
down across most of the region today, with temps as much as 10 to
15 degrees below normal in the valleys. Gusty winds will affect
the mtns and antelope valley this afternoon and evening, but will
probably remain below advisory levels.

A sharpening upper trough in the eastern pacific will evolve into
an upper low about 400 nm west of pt conception later this
morning. This low will drift eastward, and be centered about 100
nm west of monterey by late tonight, while taking on somewhat of a
negative tilt as it does so. Some upper level diffluence and
decent low and mid level lift should be sufficient to produce at
least isolated shower activity north of pt conception late
tonight and fri. Elsewhere, deep moisture and strongly cyclonic
flow will likely allow for patchy drizzle late tonight Fri morning
from the coastal slopes west and south. Have left pops out of the
forecast for now, but a case could certainly be made for some
slight chance pops, especially in the foothills of l.A. County.

Skies will likely remain mostly cloudy west of the mountains again
on fri. MAX temps will change little on fri, except there will be
several degrees of cooling in the mountains and antelope valley.

Gusty winds in the mtns and antelope valley may get close to
advisory levels Fri afternoon and evening.

The upper low will move across central ca Fri night and early sat
Saturday, with a trough extending southward into the forecast
area. Expect the marine layer to remain very deep, but a weakening
inversion could make for a more ragged cloud field. Still, there
should be a fair amount of night through morning clouds in coastal
and valley areas. There could still be some patchy drizzle in
coastal and valley areas of l.A. And vtu counties. Developing n-s
gradients Fri night should bring some gusty winds to the santa
ynez range and adjacent south coast of sba county Fri night, which
could keep skies clear there, or at least delay clouds until morning.

Expect better clearing on Sat as the trough axis moves east of the
region in the afternoon. North to south offshore gradients will
continue to sharpen, and there should be gusty northwest to north
winds across southern sba county and the i-5 corridor late sat
into Sat night. MAX temps will likely be up a few degrees in most
areas on sat, but should still be below normal, except possibly
across the south coast of sba county due to downsloping northerly
flow.

Long term (sun-wed) 24 421 am.

The upper low will move eastward into northern utah on Sunday,
then will move very little thru mon. Height rises and weakening
onshore flow should allow for a warming trend Sun and mon, with
somewhat of a decrease in coverage and inland extent of the night
thru morning low clouds and fog. By Mon and tue, MAX temps should
be near or a bit above normal, especially across the interior.

However, latest models keep some weak troughing across the region,
with a very weak upper low forming just west of the area by tue.

This may have the affect of keeping MAX temps down a bit, but
heights will be fairly high. A more significant trough will
approach the pacific wed, bringing cooling to the region.

Aviation 24 1314z.

At 1238z, the marine layer depth was around 4300 feet deep at
klax. The top of the inversion was around 4800 feet with a
temperature near 12 degrees celsius. The marine layer is expected
to deepen to around 5000 ft.

Moderate-to-high confidence in the current forecast. Highest
confidence in MVFR conditions at coastal and valley terminals
through much of today. MVFR CIGS will becomeVFR in many
locations. Moderate confidence that valley TAF sites will stay
cloudy most of the day with a 40% chance for some clearing across
coastal sites S of point conception this afternoon.

Klax... MVFR conditions will persist through this morning and
likely becomeVFR late this morning or early afternoon hours.

There is a 40% chance that there will be some clearing by mid
afternoon.

Kbur... MVFR conditions will persist through most of this morning
then becomeVFR and likely linger through much of the day.

Marine 24 244 am.

For the outer waters, high confidence in the current forecast.

Winds and seas will remain below small craft advisory levels
through at least Friday. There is a 60 percent chance of small
craft advisory level northwest winds across the southern portion
of the outer waters from point conception to san nicolas island
from Friday night through Sunday. Confidence is somewhat lower
for advisory level gusts for the northern portion of the outer
waters from Saturday afternoon through Sunday.

For the inner waters, generally high confidence in the current
forecast. For the waters north of point sal, winds and seas will
remain below SCA levels through Monday, except for a 40 percent
chance of SCA level winds Saturday night.

For the waters south of point conception, winds and seas will
remain below SCA levels through Friday. For Friday night through
Sunday, there is a 60 percent chance of SCA level winds at times,
especially across western sections of pzz650.

A long period southerly swell will continue to move through the
coastal waters through early Friday. Locally rough conditions may
occur at local harbor entrances, especially those with southerly
exposure.

Lox watches warnings advisories
Ca... Beach hazards statement in effect through this evening for
zones 40-41-87. (see laxcfwlox).

Pz... None.

Hazard potential outlook (sat-wed)
Advisory level sundowner winds are possible for western portions
of the sb south coast this weekend.

Public... Db
aviation... Kaplan
marine... Kaplan hall
synopsis... Db
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXAC1 9 mi46 min S 5.1 G 6
BAXC1 10 mi40 min SSW 7 G 7
OHBC1 - 9410660 - Los Angeles, CA 11 mi40 min 61°F1017.6 hPa
PSXC1 11 mi40 min SW 6 G 7
PFDC1 12 mi40 min S 4.1 G 5.1
PFXC1 12 mi40 min SSW 7 G 8 59°F
46221 - Santa Monica Bay, CA (028) 12 mi58 min 60°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 12 mi40 min SW 5.1 G 6 58°F 61°F1017.7 hPa
AGXC1 12 mi40 min SSW 6 G 6 58°F 1017.6 hPa
PRJC1 14 mi40 min SW 6 G 7
46256 15 mi58 min 62°F4 ft
46222 - San Pedro, CA (092) 17 mi58 min 62°F3 ft
46253 22 mi58 min 63°F3 ft
46262 34 mi58 min 62°F4 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi48 min SW 7.8 G 9.7 1016.9 hPa

Wind History for Los Angeles Berth 161,
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--

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Angeles, Los Angeles International Airport, CA6 mi65 minWSW 58.00 miOvercast60°F54°F80%1016.8 hPa
Hawthorne, Hawthorne Municipal Airport, CA6 mi65 minWSW 37.00 miOvercast60°F55°F84%1017.1 hPa
Los Angeles / USC Campus Downtown, CA13 mi71 minN 06.00 miOvercast with Haze60°F55°F84%1016.5 hPa
Long Beach, Long Beach Airport, CA13 mi65 minSSW 310.00 miOvercast60°F55°F84%1016.8 hPa
Santa Monica, Santa Monica Municipal Airport, CA13 mi67 minSW 38.00 miOvercast58°F55°F90%1016.9 hPa
Los Alamitos Army Airfield, CA19 mi2 hrsN 010.00 miOvercast59°F54°F84%1016.9 hPa
Fullerton, Fullerton Municipal Airport, CA22 mi65 minN 010.00 miOvercast61°F55°F81%1016.6 hPa
Burbank - Bob Hope Airport, CA24 mi65 minN 010.00 miOvercast58°F54°F87%1015.7 hPa

Wind History from TOA (wind in knots)
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Last 24hr--------------------W5W7W7W8W8W8W10W9W13W12W14W13W13W13
1 day ago--------------------W5CalmCalm4W7W6W9W11W12--W13W12W11W11
2 days ago--------------------CalmCalmNW4W6W6W11W11W11W9W12W12SW12W9W5

Tide / Current Tables for King Harbor, Santa Monica Bay, California
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King Harbor
Click for Map
Thu -- 12:50 AM PDT     1.30 feet Low Tide
Thu -- 03:06 AM PDT     Moonset
Thu -- 05:46 AM PDT     Sunrise
Thu -- 06:31 AM PDT     3.99 feet High Tide
Thu -- 12:40 PM PDT     0.40 feet Low Tide
Thu -- 03:21 PM PDT     Moonrise
Thu -- 07:18 PM PDT     5.15 feet High Tide
Thu -- 07:54 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.31.62.12.93.53.93.93.52.81.910.50.40.81.72.73.84.75.154.43.42.4

Tide / Current Tables for Los Angeles Harbor, Mormon Island, California
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Los Angeles Harbor
Click for Map
Thu -- 12:48 AM PDT     1.21 feet Low Tide
Thu -- 03:05 AM PDT     Moonset
Thu -- 05:46 AM PDT     Sunrise
Thu -- 06:32 AM PDT     4.03 feet High Tide
Thu -- 12:37 PM PDT     0.37 feet Low Tide
Thu -- 03:20 PM PDT     Moonrise
Thu -- 07:14 PM PDT     5.27 feet High Tide
Thu -- 07:53 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.41.21.52.12.93.6443.62.81.910.50.40.91.72.944.95.35.14.43.42.3

Weather Map and Satellite Images
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wmap_P
GOES 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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Wind Forecast for Los Angeles/Oxnard, CA (9,2,3,4)
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Ground Weather Radar Station Santa Ana Mtns, 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.