Wednesday, March20, 2019 L-36.com


Marine Weather and Tides
Hermosa Beach, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:55AMSunset 7:06PM Wednesday March 20, 2019 2:07 AM PDT (09:07 UTC) Moonrise 6:59PMMoonset 7:01AM Illumination 99% Phase: Full Moon; Moon at 14 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
    EDIT      (on/off)   Help
PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 806 Pm Pdt Tue Mar 19 2019
Tonight..E to se winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft at 16 seconds and S 3 ft at 13 seconds. Chance of showers.
Wed..SE winds 10 to 15 kt, becoming W in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft at 15 seconds and S 3 ft at 15 seconds. Chance of showers in the morning. Slight chance of Thunderstorms. Showers likely in the afternoon.
Wed night..NW winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Wind waves 2 to 3 ft. W swell 4 to 6 ft at 15 seconds, building to 6 to 8 ft at 14 seconds after midnight. Chance of showers and slight chance of Thunderstorms.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 11 seconds. Chance of showers in the morning, then slight chance of showers.
Thu night..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 4 to 6 ft at 9 seconds. Slight chance of showers in the evening.
Fri..NW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 4 to 6 ft at 9 seconds.
Fri night..Western portion, nw winds 15 to 20 kt. Elsewhere, sw winds 10 to 15 kt becoming variable 10 kt or less after midnight. Wind waves 2 ft or less. W swell 3 to 5 ft at 8 seconds.
Sat..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 4 to 6 ft. Slight chance of showers.
Sun..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 4 to 6 ft.
PZZ600 806 Pm Pdt Tue Mar 19 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 992 mb low was 600 nm W of portland with a cold front extending south from the low. This front will sweep across the coastal waters tonight and Wednesday, bringing showers and the possibility of Thunderstorms.


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


Area Discussion for - Los Angeles/Oxnard, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 klox 200308
afdlox
area forecast discussion
national weather service los angeles oxnard ca
808 pm pdt Tue mar 19 2019

Synopsis 19 250 pm.

Light to moderate rain and mountain snow will move across the
region late tonight through early Thursday with a slight chance of
thunderstorms on Wednesday. Snow will remain above pass level.

There is another chance of rain late Friday and Saturday. Afternoon
temperatures will be cooler than normal Wednesday through Saturday.

Short term (tue-fri) 19 807 pm.

***update***
overall, the atmosphere is shaping up pretty nicely this evening
with the current forecast. Latest radar surface obs indicate
showers gradually increasing across the area with this trend
expected to continue this evening and overnight. Amounts between
0.01 and 0.12 inches have been recorded so far across sba county
with trace amounts elsewhere. There has been some lightning north
of the cwa, over kern county, but no strikes in the cwa.

For this evening and overnight, shower activity will continue to
develop. As some unstable air moves into the area overnight, the
possibility of isolated thunderstorms will increase. Snow levels
will drop to around 5500 feet tonight. However, given the light
nature of the precipitation expected, do not anticipate any
significant winter weather issues.

Overall, the current forecast has a very good handle on the
immediate short term with only some minor adjustments to winds and
pops this evening.

***from previous discussion***
partly to mostly cloudy skies due to a mixed bag of high clouds,
mountain wave clouds, and coastal low clouds. The dense fog from
earlier this morning is not expected tonight, but hazy skies will
likely continue into the evening south of santa barbara.

A low pressure system currently centered 500 miles west of los
angeles will move over san francisco tonight, then move little
through Wednesday before moving into utah Thursday night. Showers
are likely everywhere sometime between tonight and Thursday
night, but it remains difficult to highlight which 12 hour period
will be wet or not. This is why pops are on the meager side. This
storm system does not have a lot of lift or moisture to work
with, so expect more showers than hours of steady rain and
generally light amounts. As result, impacts will be minimal for
this event. The potential for thunderstorms remains pretty much
anywhere however on Wednesday, especially closer to the coast.

This ingredient pushes the upper range of rainfall amounts and
intensities, resulting in fairly a large range of options. In
general, amounts are expected to range 0.01 and 0.25 inches over
los angeles county, and 0.10 and 0.50 inches over the other three
counties. Isolated amounts up to around 0.75 inches are possible
under heavier showers or thunderstorms. Rainfall rates should
generally stay under 0.25 inches per hour, but could top out at
0.33 inches per hour basically anywhere under a thunderstorm. The
threat for debris flows are minimal. Impacts will likely stay
confined to travel issues from wet roads. Snow levels should stay
in the 5,000 to 6,000 foot range, but could lower to 4,000 feet
Wednesday or Thursday morning. Could see a dusting of snow on some
mountain roads, but accumulations should stay above 5,500 feet.

With the amounts trending lower, will hold off on any winter
weather advisories. There will be some gusty south winds as well,
into early Wednesday, which will shift to more west to
northwesterly by Thursday, but looks to stay under any wind
advisories at this point. Temperatures will be below normal to no
surprise.

Friday looks rain-free, with temperatures creeping up closer to
normal as a weak ridge forms aloft. Locally breezy west to
northwest winds should continue.

Long term (sat-tue) 19 138 pm.

A very weak upper level trough will pass through northern
california Saturday morning. The GFS and ECMWF remain at odds with
one another in terms of how far south any light rain will get, but
the GFS and a few of its ensembles are looking more like the
ecmwf. Up pops a little as a result, with all areas having a
slight chance or chance for rain. Regardless, any rain will be
minimal. Sunday through Tuesday look warmer as an upper level
ridge quickly forms behind the trough, and onshore flow weakens.

Above normal temperatures are looking likely under such a pattern.

Computer projections continue to show a trough forming over
northern california by Monday with a steady stream of moisture and
soaking rain. So far all the projections keep that stream parked
over northern california through at least Tuesday, keeping us dry.

That could change of course, and when or if that plume moves to
the south could result in rain of some significance.

Aviation 19 2324z.

At 2315z, the marine inversion at klax was based at 1800 feet.

The top of the inversion was 2400 feet with a temperature of 15
degrees celsius.

Overall, low confidence in 00z TAF package. Main focus through taf
period will be storm system. This system will bring light showers
to the area as well as various flight restrictions. At this time,
MVFR CIGS and vsbys are likely at coastal valley sites tonight and
Wednesday. However, low confidence in timing of flight category
restrictions.

Klax... Low confidence in 00z taf. Arrival of MVFR CIGS could be
+ - 3 hours of current 03z forecast. There is a 50% chance that
MVFR CIGS will extend beyond 20z.

Kbur... Low confidence in 00z taf. Arrival of MVFR CIGS could be
+ - 3 hours of current 03z forecast. There is a 50% chance that
MVFR CIGS will extend beyond 21z.

Marine 19 807 pm.

For the outer waters, moderate to high confidence in current
forecast. High confidence in small craft advisory (sca) level
southeasterly winds tonight across pzz670 673 while there is
a 30% chance of SCA level winds across pzz676. For Wednesday
through Friday, moderate confidence in winds and seas remaining
below SCA levels. For Friday night and Saturday, there is a
70% chance of SCA level northwest winds.

For the inner waters north of point sal, moderate to high
confidence in current forecast. High confidence in SCA level
southeasterly tonight. For Wednesday through Friday, moderate
confidence in winds and seas remaining below SCA levels. On
Saturday, there is a 60% chance of SCA level northwest winds.

For the inner waters south of pt conception, moderate to high
confidence in current forecast. There is a 40% chance of sca
level southeast winds tonight. For Wednesday through Friday, high
confidence in winds and seas remaining below SCA levels. On
Saturday, there is a 50% chance of SCA level west to northwest
winds.

There will be the threat of isolated thunderstorms across all the
coastal waters tonight and Wednesday. Gusty and erratic winds,
brief moderate to heavy rainfall and dangerous lightning will be
possible. Additionally, there is the potential for isolated
waterspouts.

Lox watches warnings advisories
Ca... High surf advisory in effect until 11 pm pdt Wednesday for
zones 34-35. (see laxcfwlox).

High surf advisory in effect from 5 am Wednesday to 3 pm pdt
Thursday for zones 40-41-87. (see laxcfwlox).

Pz... Small craft advisory in effect until 3 am pdt Wednesday for
zones 645-670-673. (see laxmwwlox).

Hazard potential outlook (fri-tue)
High surf and dangerous rip currents are expected over the
weekend.

Public... Kittell
aviation... Rat
marine... Rat
synopsis... Kj
weather.Gov losangeles


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXAC1 9 mi37 min SE 8.9 G 11
BAXC1 10 mi37 min ENE 9.9 G 12
OHBC1 - 9410660 - Los Angeles, CA 11 mi37 min 61°F1016.4 hPa
PSXC1 11 mi37 min ESE 7 G 14
46221 - Santa Monica Bay, CA (028) 12 mi37 min 59°F3 ft
AGXC1 12 mi37 min ESE 9.9 G 11 59°F 1016.2 hPa
ICAC1 - 9410840 - Santa Monica Pier 12 mi37 min ESE 8 G 9.9 58°F 60°F1016.3 hPa
PFDC1 12 mi37 min E 8.9 G 11
PFXC1 12 mi37 min SE 9.9 G 13 60°F
PRJC1 14 mi37 min ESE 13 G 16
46256 15 mi37 min 59°F3 ft
46222 - San Pedro, CA (092) 17 mi37 min 59°F3 ft
46253 22 mi37 min 59°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi37 min S 7.8 G 9.7 58°F 58°F1015.9 hPa58°F

Wind History for Los Angeles Berth 161,
(wind in knots)    EDIT      (on/off)   Help
2
AM
-12
PM
4
AM
5
AM
-12
PM
7
AM
8
AM
9
AM
10
AM
11
AM
-12
PM
-12
PM
2
PM
3
PM
4
PM
-12
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
Last
24hr
S1
SE2
--
S2
SE3
G6
SE4
SE6
SE6
S1
SE9
S4
G7
SE9
SE8
S4
G11
S7
G10
S7
G10
S6
S4
E8
1 day
ago
SE6
SE4
E1
NW2
--
--
E1
SW3
S6
S7
SE6
E4
E5
S7
S3
SE6
S1
SW1
2 days
ago
NW4
NW4
NW7
NW4
N2
N2
E3
S7
S6
NW11
NW9
W3
SE4
SE4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hawthorne, Hawthorne Municipal Airport, CA6 mi74 minE 910.00 miMostly Cloudy59°F51°F75%1015.7 hPa
Los Angeles, Los Angeles International Airport, CA6 mi74 minE 1210.00 miMostly Cloudy58°F52°F81%1015.2 hPa
Long Beach, Long Beach Airport, CA13 mi74 minSE 710.00 miOvercast59°F52°F78%1016 hPa
Los Angeles / USC Campus Downtown, CA13 mi80 minVar 610.00 miMostly Cloudy59°F51°F75%1015.6 hPa
Santa Monica, Santa Monica Municipal Airport, CA13 mi76 minE 610.00 miOvercast58°F51°F78%1015.6 hPa
Los Alamitos Army Airfield, CA19 mi69 minESE 710.00 miPartly Cloudy57°F53°F88%1016.2 hPa
Fullerton, Fullerton Municipal Airport, CA22 mi74 minESE 610.00 miMostly Cloudy59°F50°F72%1015.8 hPa
Burbank - Bob Hope Airport, CA24 mi74 minSE 1310.00 miOvercast56°F48°F77%1014.4 hPa

Wind History from TOA (wind in knots)
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
Last 24hr--------------------CalmCalm3E6E6E10E10--E8E12SE9SE8SE8SE8
1 day ago--------------------CalmCalmCalm34E6CalmW10W16W11W11W7CalmE3
2 days ago--------------------S5CalmCalmCalmCalmCalmW7W12W11W11W13W14W11W9

Tide / Current Tables for King Harbor, Santa Monica Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Los Angeles Harbor, Mormon Island, California
   EDIT      (on/off)   Help   One Week of Data
Los Angeles Harbor
Click for Map
Wed -- 03:22 AM PDT     0.32 feet Low Tide
Wed -- 06:56 AM PDT     Sunrise
Wed -- 06:59 AM PDT     Moonset
Wed -- 09:31 AM PDT     6.04 feet High Tide
Wed -- 03:58 PM PDT     -0.97 feet Low Tide
Wed -- 06:43 PM PDT     Full Moon
Wed -- 06:58 PM PDT     Moonrise
Wed -- 07:04 PM PDT     Sunset
Wed -- 10:14 PM PDT     5.29 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
3.32.110.40.51.22.53.95.25.95.95.23.82.10.5-0.6-1-0.60.523.54.75.35.1

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (5,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Santa Ana Mtns, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.