Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
La Selva Beach, CA

Version 3.4
What's New / NOTES
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 5:50AMSunset 8:17PM Wednesday May 24, 2017 8:15 PM PDT (03:15 UTC) Moonrise 4:18AMMoonset 6:08PM Illumination 0% Phase: New Moon; Moon at 29 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- 241 Pm Pdt Wed May 24 2017
.small craft advisory in effect from Thursday morning through late Thursday night...
Tonight..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 2 to 4 ft at 11 seconds.
Thu..SW winds 5 to 15 kt...increasing to 15 to 25 kt in the afternoon. Wind waves 3 to 5 ft. NW swell 2 to 4 ft at 10 seconds.
Thu night..SW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 2 to 4 ft at 11 seconds.
Fri..SW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 2 to 3 ft at 10 seconds.
Fri night..SW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 2 to 3 ft at 10 seconds. Patchy fog after midnight.
Sat..NW winds 10 kt. Wind waves 2 ft or less. NW swell 2 ft. Patchy fog.
Sun..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 2 ft.
Memorial day..W winds 10 kt. Wind waves 2 ft or less. NW swell 2 ft...becoming 2 ft or less.
PZZ500 241 Pm Pdt Wed May 24 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure off the central california coast will bring southerly winds to the area through Thursday. Local gusty winds can be expected Thursday along the big sur and Monterey bay coastline. Surface high pressure further out in the eastern pacific is bringing northerly winds offshore north of point reyes. This high will eventually rebuild off the coast resulting in increasing northerly winds by late this weekend.

7 Day Forecast for Marine Location Near La Selva Beach, CA
   Hourly   EDIT   Help
location: 36.93, -121.85     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 250046
afdmtr
area forecast discussion
national weather service san francisco bay area
545 pm pdt Wed may 24 2017

Synopsis A cooling trend can be expected through Friday as
high pressure weakens and the marine influence increases. Minor
warming is then expected during the upcoming weekend into early
next week as high pressure returns to the west coast.

Discussion As of 01:33 pm pdt Wednesday... Only minor changes
to the ongoing forecast as unseasonably cool weather prevails into
the weekend with a gradual warm up next week.

Synoptically speaking an upper low remains off the coast spreading
mid and high level clouds over the region. At the surface, onshore
flow continues to keep low clouds and patchy fog along the coast.

The upper low and onshore flow led to much cooler temps around
the region today. 24 hour trend shows some impressive 24 hour
drops, 10 to 15 degrees colder in some spots. At 1 pm santa rosa
is 13 degrees colder today than Tuesday.

Only minor tweaks were made to previous forecast. Night and
morning clouds will continue with a marine layer 1,500 to 2,000
feet into the weekend. Patchy fog and drizzle will be possible,
especially along the immediate coastline. Milder temps will be
possible above the marine layer the next few nights, but not a
very strong thermal belt. As for daytime highs, temperatures will
continue to cool through Friday. Interior locations will drop to
very cool temps for late may with highs in the 70s to lower 80s.

Friday's forecast compare to climo is roughly 5-10 degrees below
normal.

Temperatures will begin to moderate and eventually warm over the
upcoming holiday weekend as high pressure builds over the region.

The warmest of the three days will be memorial day, but mainly
over the interior. Persistent low clouds fog will keep
coastal bay shoreline area cool. Highs on Monday will be 60s to
70s coast and 80s to lower 90s interior. Temperatures level off
next Tuesday and Wednesday.

Outside of some night morning drizzle not forecasting any
noteworthy rain through the end of the month.

Aviation As of 5:45 pm pdt Wednesday... It's a chaotic stratus
and wind pattern presently with a steadily deepening marine layer
responding to ongoing lower level cooling on southerly flow along
the immediate coast. Much cooler pacific air modified by coastal
ssts in the 50s includes modified cooler air arriving from the
mid-high latitudes wrapping around a lower level circulation off
the ca coast. A mid level 500 mb height low approx 400 miles SW of
the bay area advances to the coast coinciding with a newly
developing weak surface low pressure center remaining nearly
stationary just west of the bay area thu-fri. As a result spotty
coastal drizzle or very light rain is possible, none indicated in
00z tafs presently, but will amend as needed.

The marine layer becomes more and more elevated tonight and Thursday.

The primary forecast challenge will be coverage and duration of
stratus ceilings. 925 mb and 850 mb cooling may reach the point of
mixing out the marine layer inversion almost entirely Thursday and
Thursday night.

Vicinity of ksfo... S-sw winds 10-15 knots til 06z this evening then
probably shifting back toward w-sw by later evening, timing is low
confidence. Coordinated with cwsu and we decided to delay the onset
of forecast stratus ceiling based on present local stratus coverage
and wind pattern. Sfo-sac pressure gradient is a healthy 3.6 mb thus
the stratus could suddenly shift inland, but the forecast strongly
hedges on the south wind component holding longer; tempo MVFR cig
06z-08z the MVFR prevailing into Thursday morning.VFR forecast from
17z Thursday through 06z Thursday evening.

Sfo bridge approach... Similar to ksfo. Wind direction forecast is
low confidence from the santa clara valley to smb approach due to
recently strong 2 mb to 3 mb southerly gradient ksns-ksjc; 5 min
metar obs show NW wind 10 knots at ksjc. 00z TAF ksjc forecasts se
wind developing by 03z.

Monterey bay terminals... Tempo MVFR CIGS 00z-04z this evening then
MVFR prevailing tonight and Thursday morning. At least partial clearing
is likely by late Thursday morning depending if the marine layer
inversion persists.

Marine As of 4:40 pm pdt Wednesday... Low pressure off the
central california coast will bring southerly winds to the area
through Thursday. Local gusty winds can be expected Thursday along
the big sur and monterey bay coastline. Surface high pressure
further out in the eastern pacific is bringing northerly winds
offshore north of point reyes. This high will eventually rebuild
off the coast resulting in increasing northerly winds by late this
weekend.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
sca... Pt reyes to pigeon pt 0-10 nm from 3 am
sca... Pt pinos to pt piedras blancas 0-10 nm from 3 am
sca... Sf bay until 9 pm
public forecast: mm
aviation: canepa
marine: W pi
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
ELXC1 - Elkhorn Slough Reserve, CA 10 mi91 min WNW 6 56°F 1008 hPa53°F
46092 - MBM1 16 mi69 min S 9.7 55°F 57°F1008.1 hPa (-1.6)
46240 - Cabrillo Point, Monterey Bay, CA (158) 21 mi25 min 54°F3 ft
MEYC1 23 mi46 min SSW 6 G 8 55°F 54°F1008.9 hPa
46114 - West Monterey Bay, CA 30 mi46 min 57°F7 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 33 mi86 min 56°F 56°F6 ft1008.9 hPa (-1.6)
46239 - Point Sur, CA (157) 43 mi54 min 53°F7 ft
RTYC1 - 9414523 - Redwood City, CA 44 mi46 min W 9.9 G 11 61°F 71°F1006 hPa

Wind History for Monterey, CA
(wind in knots)    EDIT      (on/off)   Help
8
PM
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
Last
24hr
W5
SW3
NW5
NW5
W3
SW4
SW4
W4
W3
SW2
E1
W4
S1
NW4
NW4
SW4
G7
S6
S11
G16
S11
G16
SW8
G14
SW8
G14
SW8
G12
S9
G14
SW6
G11
1 day
ago
W3
G6
NW3
NW5
NW5
W4
SW3
SW3
SW3
--
N3
NE4
NE1
W1
NW4
NW4
NW6
W10
G16
S6
S9
G13
S6
G11
SW7
G13
SW4
G7
W9
W7
2 days
ago
SW5
G8
W4
W5
W5
W5
W3
SW3
W1
SW2
W3
--
W1
W2
G5
W6
NW8
NW9
NW11
G14
W12
G15
SW12
G15
W11
G17
W10
G15
SW7
G11
S8
SW4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA3 mi23 minWSW 610.00 miMostly Cloudy55°F53°F93%1009.1 hPa
Hollister, CA, CA23 mi2.2 hrsWSW 15 G 1910.00 miFair59°F50°F72%1009.1 hPa
Salinas, Salinas Municipal Airport, CA23 mi23 minWNW 1310.00 miOvercast58°F51°F78%1009.6 hPa
Monterey, Monterey Peninsula Airport, CA23 mi22 minSW 910.00 miOvercast56°F50°F81%1010 hPa

Wind History from WVI (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 24hrSW3CalmCalmCalmSW3W43CalmSW3W3SW3CalmS5CalmSW4SW54SW8
G14
SW10SW6SW7SW10
G16
SW7SW6
1 day agoSW3CalmCalmCalmCalmSW3SW4SW4SE4CalmCalmCalmCalmCalm4S9SW10SW8SW10SW9W7S6SW6SW4
2 days agoCalmS3SW3CalmCalmCalmCalmN3CalmS3SW3S3S335S7S8S10S8S10SW6SW6SW6SW4

Tide / Current Tables for Elkhorn Slough railroad bridge, Monterery Bay, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Elkhorn Slough railroad bridge
Click for Map
Wed -- 04:31 AM PDT     -0.78 feet Low Tide
Wed -- 05:18 AM PDT     Moonrise
Wed -- 05:52 AM PDT     Sunrise
Wed -- 11:08 AM PDT     3.99 feet High Tide
Wed -- 03:58 PM PDT     1.07 feet Low Tide
Wed -- 07:06 PM PDT     Moonset
Wed -- 08:15 PM PDT     Sunset
Wed -- 10:51 PM PDT     6.23 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.83.31.60.1-0.7-0.7-0.10.81.92.93.643.83.22.21.41.11.42.33.34.45.466.2

Tide / Current Tables for Point Pinos, California Current
   EDIT      (on/off)   Help   One Week of Data
Point Pinos
Click for Map
Wed -- 02:27 AM PDT     -1.07 knots Max Ebb
Wed -- 05:19 AM PDT     Moonrise
Wed -- 05:54 AM PDT     Sunrise
Wed -- 06:14 AM PDT     0.00 knots Slack
Wed -- 09:13 AM PDT     0.87 knots Max Flood
Wed -- 12:30 PM PDT     -0.00 knots Slack
Wed -- 02:56 PM PDT     -0.70 knots Max Ebb
Wed -- 06:11 PM PDT     0.00 knots Slack
Wed -- 07:07 PM PDT     Moonset
Wed -- 08:15 PM PDT     Sunset
Wed -- 09:06 PM PDT     0.74 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-0.8-1-1-0.8-0.5-0.10.30.70.90.80.60.2-0.2-0.6-0.7-0.6-0.4-0.10.30.60.70.70.4

Weather Map and Satellite Images
       (on/off)   Help
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 (23,6,7,8)
      (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.