Saturday, May27, 2017 L-36.com


Marine Weather and Tides
Boulder Creek, 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 5:49AMSunset 8:21PM Saturday May 27, 2017 2:52 AM PDT (09:52 UTC) Moonrise 6:56AMMoonset 9:34PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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
PZZ560 Pigeon Point To Point Pinos To 10 Nm- 848 Pm Pdt Fri May 26 2017
.small craft advisory in effect from Saturday afternoon through Saturday evening...
Tonight..W winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds. Patchy fog after midnight.
Sat..NW winds 5 to 10 kt...increasing to 15 to 25 kt in the afternoon. Wind waves 2 ft or less...becoming 3 to 5 ft in the afternoon. NW swell 3 to 4 ft at 9 seconds. Patchy fog in the morning.
Sat night..NW winds 15 to 25 kt...decreasing to 5 to 15 kt after midnight. Wind waves 3 to 4 ft in the evening...becoming 2 ft or less. NW swell 3 ft at 11 seconds.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 3 ft at 12 seconds.
Sun night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 2 to 3 ft at 11 seconds.
Memorial day..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. NW swell 3 ft.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 ft.
Wed..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 ft.
PZZ500 848 Pm Pdt Fri May 26 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light westerly winds will prevail over the coastal waters through early Saturday. High pressure will build over the eastern pacific this weekend resulting in increasing northwest winds along with steeper wind waves.

7 Day Forecast for Marine Location Near Boulder Creek, CA
   Hourly   EDIT   Help
location: 37.13, -122.29     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 270550
afdmtr
area forecast discussion
national weather service san francisco bay area
1050 pm pdt Fri may 26 2017

Synopsis Temperatures will begin trending back to seasonal
norms as high pressure builds over the region. Dry and warmer
Sunday and Monday. Another trough begins to approach by Tuesday
and Wednesday with a modest cooling trend and continued coastal
clouds.

Discussion As of 8:59 pm pdt Friday... Low clouds were slow to
clear today with widespread low clouds holding on through the
late afternoon. The last few frames of visible satellite imagery
shows only patchy low clouds clinging to the hills at this hour.

Low clouds are expected to return once again late tonight.

Confidence is low as to when the stratus will return however it is
likely to fill in along the coast and locally inland under a
slightly more compressed 2000-2500 ft marine layer. The shallower
marine layer will likely limit stratus intrusion inland compared
to what we have seen the last couple of days.

Temperature varied by only a few degrees today from yesterdays
high with most locations topping out in the upper 50s to lower
60s along the coast to mid to upper 60s around the bays and
inland. The warmest inland locations that were exposed to a bit
more Sun late in the day reached into the low to mid 70s.

Below average temperature are expected to begin warming ever so
slightly Saturday to near normal temperatures as high pressure
begins building in over the region. The warming trend will really
take hold on Sunday and Monday of this memorial day weekend as 850mb
temps soar to around 18 degrees c and 500mb heights reach 582 dam
by Monday. The most noticeable warming will be felt inland with
temperatures reaching into the 80s to low 90s in the warmest
locations. Near the coast temperatures will be tempered by the
cool ocean influence with temperatures only warming to around 60
to the 70s near the bays.

Temperatures will cool by midweek as an approaching upper level
trough moves across the state resulting in a deepening marine
layer, patchy drizzle along the coast and a cooler airmass
settling in over the area. Models do not have a good handle on
this system and hence will hold off on any mention of precip at
this time.

High pressure is forecast to fill in behind the low as it shift
south and east through the later half of the week. Temperatures
are expected to rebound to seasonal averages Friday and into the
following weekend.

As always if you plan to travel over this holiday weekend please
take time to visit weather.Gov for the latest forecast for your
route and travel destinations.

Aviation As of 10:45 pm pdt Friday... Low clouds cleared from
most terminals on Friday evening. But significant moisture remains
in the boundary layer and so it's likely that most terminals will
develop MVFR ceilings overnight, continuing through much of
Saturday morning.VFR expected at all terminals by midday
Saturday. Light southwest winds overnight will turn to the west
and northwest on Saturday afternoon and increase.

Vicinity of ksfo...VFR early in period with MVFR ceilings likely
to develop overnight... Most likely around 09z although confidence
is low concerning timing. Clearing expected to take place by
17-18z Saturday morning withVFR conditions for the remainder of
the day. Light westerly winds overnight, increasing Saturday
afternoon.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals...VFR early in period with MVFR ceilings
likely to develop by 08z and continue until 19z Saturday. Light
winds.

Marine As of 08:05 pm pdt Friday... Light westerly winds will
prevail along the coast through early Saturday. High pressure
will build over the eastern pacific this weekend resulting in
increasing winds along with steeper wind waves.

Mtr watches warnings advisories
Tday Sca... Mry bay from 3 pm
sca... Pigeon pt to pt pinos 0-10 nm from 3 pm
sca... Pt pinos to pt piedras blancas 0-10 nm from 3 pm
public forecast: cw
aviation: dykema
marine: dykema
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
46042 - MONTEREY - 27NM West of Monterey Bay, CA 25 mi63 min 56°F 57°F4 ft1017.6 hPa (+0.0)
RTYC1 - 9414523 - Redwood City, CA 26 mi53 min SW 2.9 G 2.9 55°F 67°F1017.1 hPa (+0.0)
46114 - West Monterey Bay, CA 28 mi53 min 58°F5 ft
46092 - MBM1 30 mi106 min WNW 7.8 55°F 56°F1016.7 hPa (+0.0)
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 35 mi63 min WSW 5.8 G 7.8 54°F 55°F5 ft1017.2 hPa (+0.0)
ELXC1 - Elkhorn Slough Reserve, CA 36 mi68 min SSE 2.9 50°F 1017 hPa49°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 40 mi32 min 55°F2 ft
MEYC1 42 mi77 min SSE 1.9 G 1.9 53°F 55°F1018.1 hPa
AAMC1 - 9414750 - Alameda, CA 44 mi53 min W 2.9 G 6 55°F 61°F1018.1 hPa (+0.0)
PXOC1 - 9414311 - San Francisco (Pier 1), CA 46 mi53 min WNW 1.9 G 7 54°F 1016.5 hPa
LNDC1 46 mi53 min WSW 6 G 8 55°F 1017.6 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 46 mi53 min SW 7 G 8.9
OBXC1 47 mi53 min 55°F 49°F
PXSC1 47 mi53 min 54°F 50°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 47 mi53 min SW 5.1 G 6 55°F 1017.6 hPa (+0.0)
FTPC1 - 9414290 - San Francisco, CA 48 mi53 min SW 2.9 G 6 53°F 55°F1017.8 hPa (+0.0)
46237 - San Francisco Bar, CA (142) 49 mi53 min 55°F3 ft

Wind History for Redwood City, CA
(wind in knots)    EDIT      (on/off)   Help
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
24hr
SW9
G12
S7
G10
S7
S6
G11
S6
S8
G11
S9
G13
S9
G12
S6
SE4
NW7
--
SW7
G11
SW6
S6
G10
SW8
W11
W7
NW9
NW8
W7
SW4
SW3
SW3
1 day
ago
S7
G11
S9
G14
S8
G11
S11
G16
S9
G15
S5
G10
S10
G17
SW9
G13
S9
G17
S14
G19
SW13
G22
S12
G21
S15
G21
SW11
G18
SW11
G18
S14
G20
S11
G15
S8
G12
S7
G11
S5
G9
S6
S6
S7
G10
S8
G11
2 days
ago
NW6
NW5
NW5
NW4
NE3
N3
G6
N4
G8
NW8
NW9
G13
N7
G11
NW9
G13
W11
W9
NW9
W10
W4
SW8
G11
S3
S6
G10
S4
S7
G11
S8
G11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mountain View, Moffett Field, CA24 mi57 minN 310.00 miFair54°F48°F80%1018 hPa

Wind History from NUQ (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 24hrS4S5SE6S4SE3SE4S54SE8SE84S6SE5SE6N7NW8NW7NW7NW6N7N7N6CalmN3
1 day agoSW3SE7
G15
CalmCalmSE8SE9
G17
S10SE9SE11
G19
SE11
G20
SE9
G15
S9
G18
SE9
G17
S10S11
G19
SW8S5SW865SE6SE4CalmS4
2 days agoCalmN5N7N5N4N4N4N53N8N10N11N10N14N14N11N11NE11E7SE9SE7SE4CalmSE4

Tide / Current Tables for Ano Nuevo Island, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Ano Nuevo Island
Click for Map
Sat -- 05:52 AM PDT     Sunrise
Sat -- 06:18 AM PDT     -1.90 feet Low Tide
Sat -- 07:57 AM PDT     Moonrise
Sat -- 01:13 PM PDT     4.33 feet High Tide
Sat -- 06:16 PM PDT     2.10 feet Low Tide
Sat -- 08:20 PM PDT     Sunset
Sat -- 10:34 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.853.51.7-0-1.3-1.9-1.7-0.90.21.52.83.84.34.23.732.42.12.22.93.74.75.4

Tide / Current Tables for Santa Cruz, California
   EDIT      (on/off)   Help   One Week of Data
Santa Cruz
Click for Map
Sat -- 05:52 AM PDT     Sunrise
Sat -- 06:12 AM PDT     -1.71 feet Low Tide
Sat -- 07:56 AM PDT     Moonrise
Sat -- 01:33 PM PDT     4.42 feet High Tide
Sat -- 06:06 PM PDT     2.40 feet Low Tide
Sat -- 08:18 PM PDT     Sunset
Sat -- 10:32 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
65.23.71.90.1-1.2-1.7-1.5-0.80.31.62.83.84.34.43.93.32.72.42.63.13.94.85.5

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 (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.