Thursday, November15, 2018 L-36.com


Marine Weather and Tides
Seacliff, 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 6:46AMSunset 4:59PM Thursday November 15, 2018 2:03 AM PST (10:03 UTC) Moonrise 1:13PMMoonset 12:00AM Illumination 48% Phase: First Quarter Moon; Moon at 7 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
PZZ535 Monterey Bay- 814 Pm Pst Wed Nov 14 2018
Tonight..NE winds up to 10 kt. Wind waves 2 ft or less. W swell 2 to 5 ft at 15 seconds. SWell S around 2 ft. Hazy and patchy smoke.
Thu..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 3 to 6 ft at 15 seconds. Hazy and patchy smoke.
Thu night..E winds up to 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 15 seconds. Hazy and patchy smoke.
Fri..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 5 to 7 ft at 14 seconds. Hazy and patchy smoke.
Fri night..W winds 5 to 15 kt. Wind waves 2 ft or less. W swell 3 to 6 ft at 13 seconds and S up to 2 ft at 16 seconds.
Sat..W winds up to 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft and sw up to 2 ft.
Sun..NW winds around 5 kt. Wind waves 2 ft or less. W swell 3 to 5 ft and sw up to 2 ft.
PZZ500 814 Pm Pst Wed Nov 14 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light north to northwest winds will continue across the coastal waters through the end of the week and into the coming weekend. Expect locally breezy winds near coastal gaps and favored coastal jet locations during the afternoon and evening hours. Light mixed swell will persist before a new northwest swell arrives tomorrow.


7 Day Forecast for Marine Location Near Seacliff, CA
   Hourly   EDIT   Help
location: 36.97, -121.91     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 150527
afdmtr
area forecast discussion
national weather service san francisco bay area
927 pm pst Wed nov 14 2018

Synopsis Smoke and haze continue to impact much of the bay area
while dry and seasonable weather persists elsewhere. No big
changes in the weather through the end of the work week with some
signs of less smoke and slightly cooler temperatures over the
weekend. Dry conditions persist at least through Tuesday with
possible pattern change by the middle of next week.

Discussion As of 08:50 pm pst Wednesday... The biggest impact
to the bay area this since this afternoon continues to be focused
on smoke and its impacts. There was a wind shift through the
delta late this afternoon leading to a deluge of smoke into san
francisco bay and portions of the east bay. It was so bad the
webcams had a hard time showing the sunset with visibility sensors
at 3 4 of a mile. Once the smoke made its way west it eventually
pushed southward into the santa clara valley as well. The san jose
airport dropped down to 2 1 2 miles vis. Lastly, air quality
stations took a nose dive during this timeframe to the very
unhealthy category for some areas. Needless to say smoke continues
to adversely impact the region. Unfortunately, now that Sun has
set and the atmosphere is becoming more stable smoke will remain
tonight. The early frames from the 00z hrrr smoke model confirm
this thinking with smoke lingering around san francisco bay. No
updates are planned for the overnight period. One potential area
that may be an issue are overnight lows. This morning's low were
pretty chilly across the interior valleys. Model guidance has
trended slightly warmer for tonight, but would not be surprised if
a few protect valleys drop into the mid to lower 30s.

Now for the extended forecast - a giant question mark, well at
least for timing and details. Model run consistency and consensus
has not been that great. GFS keeps flip flopping from wet to dry
and vice versa. The ECMWF has been slightly more consistent, but
not great. Keep in mind the forecast period having trouble is
toward the end of the model run and confidence is usually pretty
low that far out. For what it's worth the 00z GFS is in and keeps
the bay area dry through thanksgiving and finally brings rain next
Friday.

Prev discussion As of 2:56 pm pst Wednesday... Smoke from the camp
fire continues to be one of the main impacts on bay area weather.

Satellite showed another belch of smoke this morning that has
worked its way down the sac valley and into the bay area.

Gradients show a half millibar offshore from sac to sfo with east
winds blowing in the delta and bringing the smoke westward into
the bay area. Visibility is now less than a mile in livermore with
the east bay indicating some of the poorest visibility. Hazy
skies continue elsewhere with afternoon highs generally in the 60s
with 70s for the central coast. Very dry conditions continue this
afternoon with many sites reporting humidity values in the single
digits including usually wet spots such as big sur coming in at
9%
day over day changes in the large scale weather remain minor with
daytime highs in the 60s and 70s with fairly cool overnight lows
from the mid 30s to mid 40s through the end of the work week.

Million dollar question is how active the camp fire will burn the
next few days. As was shown today with lighter winds and even
light offshore flow the smoke will tend to drift towards the bay
area until we get a shift in the large scale weather patterns.

That may occur by this weekend as an upper low approaches the
southern california coast and some type of southerly flow may help
to keep any smoke to our east. It should be noted that latest
trends build a ridge over northeast california over the weekend
that will keep warm and dry weather up there with a fairly strong
low level inversion likely in place, not ideal for smoke
dispersion.

Long range forecast details regarding any rainfall next week
continues to be watched. The 12 and 18z GFS deterministic runs
have been discouraging and gone completely dry. Need to note that
the ensembles still show a trough along the west coast weds
through Friday of next week. The ECMWF has a weak front on weds
and a second stronger storm by about next Friday. This is all
still 7-10 days out so confidence remains low on details as we
anxiously await a pattern shift. Until then mild and dry weather
for at least another 6 days.

Aviation As of 09:27 pm pst Wednesday... For 06z tafs. Smoke
continues to be an issue with reduced visibilities still being
reported across area terminals. Mainly MVFR vis with isolated
instances of ifr. Latest smoke model forecast does not indicate
that this will change overnight. Expect reduced vis at the surface
as well as slant range vis issues to persist due to smoke. Winds
will remain generally light through the period.

Vicinity of ksfo... MVFR vis due to smoke with generally light
winds. Slant range vis issues expected to persist. Latest hrrr
smoke forecast does not suggest much change in smoke conditions
through at least tonight.

Sfo bridge approach... Similar to terminal.

Monterey bay terminals...VFR prevailing with periods of reduced
vis to MVFR due to smoke.

Marine As of 08:14 pm pst Wednesday... Generally light north to
northwest winds will continue across the coastal waters through
the end of the week and into the coming weekend. Expect locally
breezy winds near coastal gaps and favored coastal jet locations
during the afternoon and evening hours. Light mixed swell will
persist before a new northwest swell arrives tomorrow.

Mtr watches warnings advisories
Tngt None.

Public forecast: mm rww
aviation: as
marine: as
visit us at

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
46092 - MBM1 16 mi54 min N 7.8 56°F 58°F1022.1 hPa (-0.8)
46240 - Cabrillo Point, Monterey Bay, CA (158) 24 mi42 min 59°F2 ft
MEYC1 25 mi87 min 58°F1022.3 hPa
46114 - West Monterey Bay, CA 29 mi33 min 59°F5 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 29 mi73 min N 7.8 G 9.7 57°F 60°F5 ft1021.8 hPa (-0.8)
RTYC1 - 9414523 - Redwood City, CA 40 mi33 min NW 1.9 G 2.9 47°F 59°F1023.2 hPa
46239 - Point Sur, CA (157) 44 mi33 min 61°F5 ft

Wind History for Monterey, CA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA7 mi70 minN 05.00 miFair with Haze46°F26°F46%1022.6 hPa

Wind History from WVI (wind in knots)
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
12
AM
1
AM
2
AM
Last 24hrNW3N3SE4CalmW3CalmE3CalmSE4CalmCalmW5W6W4CalmCalmCalmNW4NW4NW4NW4NW4CalmCalm
1 day agoCalmNW3CalmCalmCalmN3CalmCalmCalmCalmS3CalmS3S5CalmNE3N3NW4NW7NW3CalmN5NW4NE4
2 days agoCalmNW3CalmCalmCalmCalmE4E543E5SW1043CalmN5NW3NW5NW4NW5NW3CalmN3Calm

Tide / Current Tables for Santa Cruz, Monterey Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Santa Cruz
Click for Map
Thu -- 05:07 AM PST     4.13 feet High Tide
Thu -- 06:46 AM PST     Sunrise
Thu -- 06:54 AM PST     First Quarter
Thu -- 10:57 AM PST     2.96 feet Low Tide
Thu -- 01:12 PM PST     Moonrise
Thu -- 03:36 PM PST     3.73 feet High Tide
Thu -- 04:58 PM PST     Sunset
Thu -- 10:35 PM PST     0.78 feet Low 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
1.42.12.93.544.14.13.83.53.2333.13.33.53.73.73.532.41.71.10.80.8

Tide / Current Tables for Point Pinos, California Current
   EDIT      (on/off)   Help   One Week of Data
Point Pinos
Click for Map
Thu -- 12:06 AM PST     0.00 knots Slack
Thu -- 03:17 AM PST     0.53 knots Max Flood
Thu -- 06:38 AM PST     -0.00 knots Slack
Thu -- 06:45 AM PST     Sunrise
Thu -- 06:54 AM PST     First Quarter
Thu -- 08:52 AM PST     -0.36 knots Max Ebb
Thu -- 12:50 PM PST     0.00 knots Slack
Thu -- 01:11 PM PST     Moonrise
Thu -- 03:11 PM PST     0.28 knots Max Flood
Thu -- 04:58 PM PST     Sunset
Thu -- 05:52 PM PST     -0.00 knots Slack
Thu -- 08:55 PM PST     -0.60 knots Max Ebb
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
-00.20.40.50.50.40.2-0.1-0.3-0.4-0.3-0.2-0.100.20.30.30.2-0-0.3-0.5-0.6-0.5-0.4

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_P
GOES Local Image of CentralWestCoast    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 Francisco/Monterey Bay Area, CA (5,6,7,8)
      (on/off)   Help

Ground Weather Radar Station San Francisco Bay Area, 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.