Wednesday, January17, 2018 L-36.com


Marine Weather and Tides
Santa Cruz, 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 7:17AMSunset 5:19PM Wednesday January 17, 2018 10:21 AM PST (18:21 UTC) Moonrise 7:41AMMoonset 6:06PM Illumination 1% Phase: New Moon; Moon at 1 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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PZZ560 Pigeon Point To Point Pinos To 10 Nm- 920 Am Pst Wed Jan 17 2018
Today..W winds 10 kt. Wind waves 2 ft or less. W swell 9 to 11 ft at 15 seconds.
Tonight..NE winds 5 to 15 kt. Wind waves 3 ft in the evening... Becoming 2 ft or less. W swell 7 to 9 ft at 14 seconds.
Thu..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 8 to 10 ft at 20 seconds... Increasing to 17 to 18 ft at 19 seconds in the afternoon. Chance of rain.
Thu night..W winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 17 to 19 ft at 18 seconds. Chance of rain in the evening, then chance of showers after midnight.
Fri..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 13 to 16 ft at 17 seconds. Chance of showers, then slight chance of showers.
Sat..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 10 to 13 ft.
Sun..S winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 8 to 10 ft. Chance of rain, then rain likely.
PZZ500 920 Am Pst Wed Jan 17 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure to the west will shift south as a low pressure system approaches the pacific northwest. A frontal system associated with the low will move through the area on Thursday. Gusty southerly will form through tonight, then shift quickly to westerly on Thursday, before becoming northwesterly by Friday. A large long-period swell will bring dangerous breaking waves to the coastline tonight through at least Friday. Dense fog with low visibility will impact some areas today.

7 Day Forecast for Marine Location Near Santa Cruz city, CA
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location: 36.97, -122.02     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 171724
afdmtr
area forecast discussion
national weather service san francisco bay area
issued by national weather service los angeles oxnard ca
910 am pst Wed jan 17 2018

Synopsis Areas of dense fog this morning will give way to
mostly cloudy skies as high clouds increase ahead of the next
pacific front. Light rain will start in the north bay Thursday
morning and then spread southward through the bay area and central
coast by Thursday evening. Rain will quickly turn to showers
Thursday night into Friday as much colder air settles over the
region. Saturday morning will start out chilly but skies should be
mostly clear and dry for the start of the weekend. The next front
approaches later Sunday into Monday with the next chance of rain.

Discussion As of 09:10 am pst Wednesday... Areas of fog and low
clouds continue this morning, but will likely lift and dissipate
for most areas later this morning. Otherwise the forecast in the
near term is on track. Mid to high level clouds will continue to
stream across the region, out ahead of an approaching cold front
that was about 500 miles northwest of the bay area. Similar high
temperatures are expected for today as yesterday with highs
generally near 60 to 70 degrees. Please see the previous forecast
discussion below for additional details.

Prev discussion As of 3:25 am pst Wednesday... Short term concern is
dense fog being reported throughout the region. 3 am obs include
dense fog at napa, concord, novato, monterey, salinas and half
moon bay. Fog product is starting to become obscured as high
clouds pass overhead but dense fog appears to be over the coastal
waters and down the salinas valley. Heads up for the early morning
commuters across the region.

Similar to the last few days once any morning fog clears skies
will be partly to mostly cloudy today as mid and high clouds
continue to come in off the pacific ahead of the incoming trough
and surface cold front. Upshot is that today remains dry with
highs upper 50s to mid 60s most areas.

Long anticipated cold front looks to arrive on Thursday. In terms
of bringing significant rain, have to say the latest model trends
have been drier. The system will have plenty of cold air
associated with it and not much of a moisture tap (no talk of
atmospheric rivers lately) as the main upper trough and cold air
are dropping down from the gulf of alaska.

Following the latest model runs we expect light rain in the north
bay Thursday morning then reaching the greater bay area
midday afternoon before washing out over the central coast by
Thursday night. The fairly fast moving nature of the surface front
will preclude significant rainfall with totals in the 0.25-0.75 on
average.

Steady precip looks to shut off rapidly on the backside of the
front with post-frontal showers more favorable over the sierra,
our coastal hills and over the ocean due to the warmer sst. Anyway
the forecast will keep shower chances going on Friday but there
will be plenty of sunny breaks and a bite in the air as daytime
highs struggle to reach the mid 50s.

Friday night will feel cold as temps aloft will plummet leading to
widespread 30s and lower 40s by sunrise Saturday morning. The
start of the weekend looks dry but cool with highs in the mid 50s
for Saturday with an upper trough aloft.

Latest trends for the next system show rain moving into the north
bay Sunday night and then dropping through the bay area and
central coast for the Monday morning commute. Initial signals
suggest another light to low end moderate rain event as the front
will move through quickly.

General consensus suggests one final system around midweek then
high pressure looks to build heading into the last weekend of
january.

Aviation As of 4:30 am pst Wednesday... METAR observations show
fog is limited to the coast and the inland valleys. Low CIGS cover
much of the sfo bay area but so far vsbys have remained 5 miles or
greater. Cloudcover should prevent dense fog from developing at
sfo or sjc but the lack of clouds at oak may allow vsby there to
drop lower possibly down to 1-3 miles. Models indicate more drying
in the afternoon so CIGS should burn off after 20-21z. Warm front
approaches late tonight with some pre-frontal rains beginning in
the north bay after 06z spreading south during the night. Winds
will remain light.

Vicinity of ksfo... MVFR through 21z with vsbys down to 3-5 miles
at times.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Some clear skies are mixed with fog
around mry as the drainage wind struggles to develop. Looks like
fog will be in and out of mry this morning so latest forecast
calls for tempo dense fog through 16z. Dense fog could possibly
linger on a little longer. For sns dense fog is expected through
18z then lifting to ifr cigs. Clouds becoming sct after 20z as
models forecast drier air to move in.

Marine As of 09:10 am pst Wednesday... High pressure to the
west will shift south as a low pressure system approaches the
pacific northwest. A frontal system associated with the low will
move through the area on Thursday. Gusty southerly will form
through tonight, then shift quickly to westerly on Thursday,
before becoming northwesterly by Friday. A large long-period swell
will bring dangerous breaking waves to the coastline tonight
through at least Friday. Dense fog with low visibility will impact
some areas today.

Mtr watches warnings advisories
Tday Sca... Pt arena to pigeon pt 10-60 nm
sca... Rough bar advisory for sf bar
public forecast: rm rww
aviation: W pi
marine: rk
visit us at

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46092 - MBM1 15 mi67 min NE 12 55°F 56°F1023.3 hPa (+0.7)
ELXC1 - Elkhorn Slough Reserve, CA 18 mi97 min SSE 4.1 51°F 1023 hPa51°F
46042 - MONTEREY - 27NM West of Monterey Bay, CA 24 mi92 min NNE 3.9 G 3.9 53°F 56°F11 ft1023 hPa (+0.6)
46114 - West Monterey Bay, CA 24 mi52 min 56°F10 ft
46240 - Cabrillo Point, Monterey Bay, CA (158) 25 mi61 min 57°F6 ft
MEYC1 26 mi52 min NNW 2.9 G 4.1 53°F 57°F1023.3 hPa
RTYC1 - 9414523 - Redwood City, CA 38 mi52 min W 4.1 G 5.1 55°F 55°F1025.5 hPa
46239 - Point Sur, CA (157) 44 mi52 min 57°F9 ft

Wind History for Monterey, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA12 mi29 minE 310.00 miFair56°F53°F90%1024.2 hPa

Wind History from WVI (wind in knots)
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Last 24hrNE3--------W3CalmCalmCalmCalmCalmCalmCalmE3CalmCalmCalmW3CalmN3W3CalmCalmE3
1 day agoCalmCalmCalmS4SW4SW3W4SW3CalmCalmCalmNW3NW4NW4N3CalmCalmCalmCalmW4N3CalmN3Calm
2 days agoE4CalmCalmSE3E3CalmW4CalmW4CalmNW3NW6W3CalmW4NW3CalmN3CalmSW4CalmN33Calm

Tide / Current Tables for Santa Cruz, Monterey Bay, California (sub)
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Santa Cruz
Click for Map
Wed -- 03:41 AM PST     2.68 feet Low Tide
Wed -- 07:19 AM PST     Sunrise
Wed -- 07:40 AM PST     Moonrise
Wed -- 09:45 AM PST     5.47 feet High Tide
Wed -- 05:02 PM PST     -0.45 feet Low Tide
Wed -- 05:17 PM PST     Sunset
Wed -- 06:06 PM PST     Moonset
Wed -- 11:56 PM PST     3.84 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.73.432.72.72.93.54.24.95.35.55.14.33.11.80.6-0.2-0.4-0.20.41.42.33.23.7

Tide / Current Tables for Point Pinos, California Current
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Point Pinos
Click for Map
Wed -- 01:02 AM PST     -0.00 knots Slack
Wed -- 03:09 AM PST     -0.42 knots Max Ebb
Wed -- 06:24 AM PST     0.00 knots Slack
Wed -- 07:18 AM PST     Sunrise
Wed -- 07:39 AM PST     Moonrise
Wed -- 09:12 AM PST     0.49 knots Max Flood
Wed -- 12:00 PM PST     -0.00 knots Slack
Wed -- 03:17 PM PST     -0.92 knots Max Ebb
Wed -- 05:17 PM PST     Sunset
Wed -- 06:07 PM PST     Moonset
Wed -- 07:18 PM PST     0.00 knots Slack
Wed -- 10:16 PM PST     0.68 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40-0.3-0.4-0.4-0.3-0.10.10.40.50.40.30-0.4-0.7-0.9-0.9-0.7-0.4-0.10.30.50.70.6

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

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (13,3,4,5)
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Ground Weather Radar Station San Francisco Bay Area, 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.