Friday, January19, 2018 L-36.com


Marine Weather and Tides
Morro Bay, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:08AMSunset 5:19PM Friday January 19, 2018 9:14 AM PST (17:14 UTC) Moonrise 8:50AMMoonset 7:57PM Illumination 9% Phase: Waxing Crescent; Moon at 3 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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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 810 Am Pst Fri Jan 19 2018
.small craft advisory in effect through late Saturday night...
Today..NW winds 5 to 15 kt, becoming 15 to 25 kt. Combined seas 13 to 16 ft dominant period 16 seconds. Chance of showers in the morning, then slight chance of showers.
Tonight..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 12 to 15 ft dominant period 15 seconds. Slight chance of Thunderstorms in the evening.
Sat..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 12 to 14 ft dominant period 14 seconds, subsiding to 10 to 12 ft dominant period 14 seconds in the afternoon.
Sat night..NW winds 20 to 30 kt in the evening, becoming N 10 to 15 kt. Combined seas 10 to 12 ft dominant period 14 seconds, subsiding to 7 to 9 ft dominant period 14 seconds after midnight.
Sun..N winds 10 to 15 kt, becoming nw 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. NW swell 7 to 9 ft at 13 seconds.
Sun night..NW winds 10 to 20 kt in the evening, becoming 5 to 10 kt. Wind waves 1 to 3 ft. NW swell 6 to 8 ft at 12 seconds. Slight chance of rain after midnight.
Mon..NW winds 15 to 25 kt. Combined seas 8 to 11 ft. Slight chance of rain.
Tue..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 7 to 9 ft.
PZZ600 810 Am Pst Fri Jan 19 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z...or 7 am pst...a 988 mb low was located 400 nm nw of seattle. A 1007 mb low was centered in nevada with a cold front extending southwestward into the coastal waters. This cold front will move through the coastal waters this morning. Strong nw winds behind this front will affect the waters through Sat. In addition, a very large W to nw swell will overspread the waters today and persist into the weekend.

7 Day Forecast for Marine Location Near Morro Bay, CA
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location: 35.39, -120.93     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 191312
afdlox
area forecast discussion
national weather service los angeles oxnard ca
512 am pst Fri jan 19 2018

Synopsis
An incoming storm system will bring much cooler temperatures...

gusty winds... Light rain and mountain snow showers to the region
today. Snow showers will linger into Saturday morning across the
northern slopes. Hazardous driving conditions expected across the
interstate 5 corridor around the grapevine this evening through
Saturday morning. Warmer conditions return next week with a
slight chance of showers primarily along the central coast early
next week.

Short term (tdy-sun)
latest satellite imagery indicated plenty of high to mid level
clouds moving across the forecast as a weakening frontal boundary
moves into slo county this morning. Below the high clouds plenty
of low clouds were filling across la vtu counties W of the
mountains. There will be a chance of some morning drizzle across
portions of la vtu counties early this morning, while light
showers continue to move across areas N of point conception this
morning. As the upper trough continues to move rather quickly
through the area, the lower level wind profiles will not be
conducive for much in the way of precip across areas S of point
conception, especially ventura county and the sba south coast due
to the downsloping from the mountains upstream. There will be a
better chance of precip across southern l.A. County towards the
valleys and foothills later this afternoon and overnight hours.

Have tailed back the slight chance for thunderstorms this evening
to only the northern portion of the outer waters. Most of the
precip will be concentrated across the northern slopes of the
ventura county mountains and NW northern slopes of the l.A. Mtns
including the i-5 corridor around the grapevine. Snow levels will
remain high this morning between 7500 to 8000 ft, but by late this
afternoon or early evening, snow levels are expected to plummet
to around 4000 ft. Then lowering to between 2500 and 3500 ft after
midnight tonight. With most of the moisture being concentrated
across the northern slopes of the la vtu county mtns, travel
across the i-5 corridor is expected to be treacherous due to
blowing snow and icy conditions. NW to N winds are expected to
strengthen late this afternoon through Saturday morning across the
mountains.

A winter weather advisory is in effect for the la vtu sba county
mountains beginning late this morning including the foothills of
the cuyama valley. The timing might be a tad early, but snow
levels will lower to around 6000 ft by this afternoon. Expect 3-6
inches of snow with highest amounts across the NRN slopes. Also an
inch of snow for the cuyama valley foothills. Wind gusts of 50
mph can be expected later this evening to go along with the snow.

A wind advisory will be issued for the sba south coast from late
this afternoon through mid morning Saturday. Winds are expected to
get gusty across the montecito area late tonight into Saturday
morning as well. The day shift might have to add wind advisories
for the santa clarita san fernando valleys and possibly for the la
basin, especially the western l.A. Tonight into early Saturday.

For Saturday there could be a few lingering showers across
southern l.A. County including the eastern san gabriel mtns as
well as the northern slopes of the local mountains, especially
the ventura county mtns. Snow showers should linger into early
Saturday afternoon across the i-5 corridor, then diminish. Expect
partly to mostly cloudy skies across the interior areas Saturday,
with partly cloudy skies for most other areas. There will be the
slightest warming trend on Sunday, but still remain a bit cooler
than normal for this time of year. Skies should remain partly
cloudy on Sunday, but that could be a bit pessimistic for coastal
areas which could see more sunshine.

Long term (mon-thu)
slow warming trend early next week as a weak ridge starts to
build over the area. Both the GFS and ECMWF show the tail end of
another weak front coming through the area Monday but any
precipitation should be confined to NRN slo county before it
completely washes out. Elsewhere just some mid and high clouds
which should keep partly cloudy skies for the most part through
Wednesday. By Thursday, clouds should be on the increase. Models
still in poor agreement late next week with the possibility of
another weak system for Thu but again very low confidence. None of
the model solutions in the last few days have indicated anything
more than a very light precip event at best, and mostly northern
areas. Then dry and warmer going into next weekend.

Aviation 19 12z...

at 1130z, the marine layer at klax was 1000 ft deep. The top of
the inversion was near 2400 ft with a temperature of 16 deg c.

Very chaotic cloud pattern across the region early this morning,
with widespread CIGS at several different levels. For the most
part, conds were ifr to lifr west of the mountains, with local
vlifr conds. Conds should become mostly MVFR in most areas by late
morning, although ifr to lifr conds will likely cont in the
foothills and mtns. There will be a few showers this morning.

Cigs will likely scatter out in coastal sections this afternoon,
especially from vtu county northward. Conds should be mostlyVFR
tonight, except lifr conds will likely continue on northern
slopes, with clouds and snow showers.

Gusty NW winds will affect the central coast this afternoon and
the i-5 corridor this morning thru Sat morning. Gusty NW to N winds
will affect the south coast of sba county this afternoon thru sat
morning, many coastal and valley areas of los angeles county this
evening thru Sat morning, and the antelope valley this evening
thru Sat evening. There will be areas of llws and moderate uddf.

Klax... Low confidence in the 12z taf. There will likely be rapid
changes in cig heights and vsbys this morning. Expect conds to
become MVFR by 16z but there is a 20% chance that ifr conds could
persist through 18z. There is a 30% chance that MVFR conds could
affect the airport thru late tonight. There is a 20-30% chance
that northerly cross winds will gust to 20 kt or greater between
06z and 18z Fri with llws possible.

Kbur... Low confidence in the 12z taf. There will likely be rapid
changes in cig heights and vsbys this morning. Expect conds to
become MVFR by 16z but there is a 20% chance that ifr conds could
persist through 18z. There is a 30% chance that MVFR conds could
affect the airport thru late tonight. There is a 20-30% chance
that northwest to north winds will gust to 20 kt or greater
between 06z and 12z Fri with llws possible.

Marine 19 430 am...

for the outer waters, moderate to high confidence in current
forecast.

Across the southern two outer waters zones (pzz673, pzz676),
a gale warning is in effect thru Sat evening. There is a 20%
chance that winds will remain below gale force there.

Across the northern zone (pzz670), SCA conds are expected thru
sat night. There is a 20% chance that winds will reach gale force
across the northern zone (pzz670) thru sat.

For the inner waters north of point sal, moderate to high confidence
in the current forecast with SCA conds thru Sat night. There is a
20% chance of gale force winds this afternoon thru Sat evening.

Across the sba channel and the southern inner waters, moderate to
high confidence in the forecast, with SCA conds through early
this afternoon, then gale force winds from mid afternoon today
through Sat evening. There is a 20% chance that winds will remain
below gale force through sat.

Very large NW swell will affect all waters today and tonight,
then swell will slowly subside Sat and Sat night. Dangerous
breaking waves are possible near harbor entrances, including
morro beach harbor and ventura harbor through Saturday

Beaches 19 500 am...

an extended period of large surf is expected to continue along
west to northwest facing beaches through Saturday evening as very
large westerly swells move through the coastal waters.

For west and northwest facing beaches along the central coast,
surf will average 15 to 20 feet with local sets to 25 feet today,
then surf will slowly subside tonight through Saturday evening. A
high surf warning remains in effect from this through 900 pm pst
Saturday. The high surf may cause beach erosion and will produce
life-threatening rip currents. Minor coastal flooding is possible
in low lying areas such as parking lots, especially near the times
of high tide, especially late this morning.

For west and northwest facing beaches south of point conception,
surf will average 8 to 12 feet today into tonight. Local sets to
15 feet are possible on exposed west facing locations such as
ventura harbor. High surf will slowly subside Saturday and
Saturday evening. A high surf advisory remains in effect through
900 pm pst Saturday evening.

Lox watches warnings advisories
Ca... High surf warning in effect until 9 pm pst Saturday for zones
34-35. (see laxcfwlox).

Winter weather advisory in effect from 10 am this morning to
4 pm pst Saturday for zones 38-52>54. (see laxwswlox).

Beach hazards statement in effect through Saturday evening
for zone 39. (see laxcfwlox).

Wind advisory in effect from 3 pm this afternoon to 10 am pst
Saturday for zone 39. (see laxnpwlox).

High surf advisory in effect until 9 pm pst Saturday for
zones 40-41-87. (see laxcfwlox).

Wind advisory in effect from 10 pm this evening to 10 pm pst
Saturday for zone 59. (see laxnpwlox).

Pz... Small craft advisory in effect until 3 am pst Sunday for
zones 645-670. (see laxmwwlox).

Small craft advisory in effect until 3 pm pst this afternoon
for zones 650-655. (see laxmwwlox).

Gale warning in effect from 3 pm this afternoon to 9 pm pst
Saturday for zones 650-655. (see laxmwwlox).

Small craft advisory in effect until noon pst today for zones
673-676. (see laxmwwlox).

Gale warning in effect from noon today to 9 pm pst Saturday
for zones 673-676. (see laxmwwlox).

Hazard potential outlook (sun-thu)
no significant hazards expected.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 13 mi77 min 59°F11 ft
PSLC1 - 9412110 - Port San Luis, CA 18 mi44 min N 5.1 G 6 55°F 58°F1019.6 hPa
CPXC1 18 mi24 min N 4.1 G 7 55°F 1019.4 hPa46°F
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi84 min NW 19 G 23 56°F 58°F16 ft1018.2 hPa (+0.0)

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA19 mi78 minNW 510.00 miOvercast53°F46°F80%1018.4 hPa

Wind History from SBP (wind in knots)
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Last 24hrN7CalmW4NW6NW14NW13NW14NW11NW7NW5CalmCalmCalmE3SE3NW10NW8N4NW6N5N7N5NW5NW9
1 day agoCalmCalmNW4NW16W7NW11NW16N6NW12NW10NW3CalmW6SE4CalmCalmNW4CalmSE3S4--N3E3Calm
2 days agoCalmCalmNW11NW13NW10NW11NW14
G19
NW10W8NW8CalmNW6NW11NW5E3CalmSE4E5CalmE3SE3CalmCalmCalm

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Fri -- 04:41 AM PST     2.01 feet Low Tide
Fri -- 07:10 AM PST     Sunrise
Fri -- 08:49 AM PST     Moonrise
Fri -- 10:46 AM PST     5.22 feet High Tide
Fri -- 05:18 PM PST     Sunset
Fri -- 05:53 PM PST     -0.24 feet Low Tide
Fri -- 07:56 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.73.432.52.122.333.84.55.15.24.842.91.70.6-0-0.20.10.81.72.63.3

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Fri -- 04:37 AM PST     2.47 feet Low Tide
Fri -- 07:09 AM PST     Sunrise
Fri -- 08:48 AM PST     Moonrise
Fri -- 10:33 AM PST     5.37 feet High Tide
Fri -- 05:18 PM PST     Sunset
Fri -- 05:47 PM PST     -0.29 feet Low Tide
Fri -- 07:56 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.93.73.32.92.52.52.83.44.24.95.35.34.942.81.60.5-0.1-0.30.10.81.82.83.5

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for Los Angeles/Oxnard, CA (12,3,4,5)
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Ground Weather Radar Station Vandenberg AFB, CA
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weather_mapweather_map weather_map

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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.