Monday, March25, 2019 L-36.com


Marine Weather and Tides
Las Lomas, 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 7:03AMSunset 7:23PM Sunday March 24, 2019 11:00 PM PDT (06:00 UTC) Moonrise 10:45PMMoonset 8:40AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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- 844 Pm Pdt Sun Mar 24 2019
.small craft advisory in effect from Monday morning through Monday evening...
Tonight..W winds up to 10 kt...becoming east after midnight. Wind waves 2 ft or less. W swell 5 to 8 ft at 17 seconds.
Mon..S winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 4 to 7 ft at 16 seconds. Rain likely.
Mon night..S winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 4 to 7 ft at 13 seconds. Showers likely.
Tue..SE winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 4 to 7 ft at 14 seconds. A chance of showers.
Tue night..S winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 3 to 6 ft at 13 seconds. Rain.
Wed..SW winds 15 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 3 to 6 ft at 13 seconds. Showers.
Wed night..SW winds 10 to 20 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 12 seconds. Showers likely.
Thu..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 4 to 7 ft. A chance of showers.
Fri..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
PZZ500 844 Pm Pdt Sun Mar 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Winds southerly and rain developing through Monday morning ahead of approaching low pressure system and cold front. Gusty winds can be expected ahead of the front. Showers linger Monday night and Tuesday. Rain develops again during the mid-week then dry weather returns late week.


7 Day Forecast for Marine Location Near Las Lomas, CA
   Hourly   EDIT   Help
location: 36.86, -121.76     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 250441
afdmtr
area forecast discussion
national weather service san francisco bay area
941 pm pdt Sun mar 24 2019

Synopsis A pacific storm system will spread moderate rain
across the north bay late tonight and Monday morning, with light
rain then expected to develop south across much of the rest of the
area on Monday afternoon and evening. Periods of rain are then
likely to continue from Monday night through Thursday, with the
most widespread rainfall expected late Tuesday night into
Wednesday. Dry weather is forecast to return late in the week and
into next weekend.

Discussion As of 9:00 pm pdt Sunday... Evening IR satellite
imagery shows a large upper low centered about 800 miles off the
coast of the pacific northwest. To the south and east of this low
center is the initial frontal boundary that is currently
approaching the northern california coast. Models forecast light
warm advection rainfall to develop out ahead of the frontal
boundary and into the north bay by around midnight tonight, and
the kmux radar is already showing weak returns near northwest
sonoma county. Latest hrrr and the 00z NAM indicate that rain
rates will increase in the north bay late tonight as the frontal
boundary approaches our coast. Moderate to locally heavy rainfall
can be expected in the north bay from late tonight through the
Monday morning commute. The latest hrrr also forecasts moderate
rainfall rates developing as far south and east as the san
francisco peninsula and western alameda county by midday tomorrow.

The frontal boundary is then forecast to weaken significantly as
it pushes south into the south bay and monterey bay area on Monday
afternoon and evening. Rainfall totals in the north bay through
Monday evening are forecast to range from 0.5-1.5 inches with as
much as 2 inches possible in northwest sonoma county. Rain totals
through late Monday for the remainder of our area are expected to
be a quarter inch or less except up to a half inch along the sf
peninsula, and locally in the santa cruz mountains and east bay
hills.

The weakened frontal boundary is forecast to stall along a line
from about san jose to monterey late Monday night and persist
there through Tuesday. During this time frame, scattered showers
will be most likely near the stalled frontal boundary, but could
occur most anywhere in our area. In any case, rainfall amounts
from late Monday night through Tuesday evening are expected to be
light.

The upper low will finally begin to approach the far northern
california coast late Tuesday night. A vigorous shortwave trough
rotating around the low is expected to bring another round of
widespread rainfall to our area from late Tuesday night through
Wednesday morning. Scattered showers will continue into Wednesday
afternoon and evening. In addition, the airmass will become
increasing unstable late Tuesday night and Wednesday morning as
the upper low approaches and we could see isolated thunderstorms
on Wednesday. The upper low will be very slow to move to the
northeast and out of our area, so scattered showers may continue
through Wednesday night and into Thursday, primarily across the
northern portion of our area. Additional rainfall from Tuesday
through Thursday is forecast to range from 0.50-1.50" in most
areas, with as little as 0.25" in our far southern valleys and as
much as 2 inches in northwest sonoma county. Forecast rainfall
from late tonight through Thursday will mostly be beneficial,
although some minor nuisance flooding is possible in the north
bay, particularly on Monday morning.

Gusty winds can be expected at times through midweek. South winds
may gust as high as 35 mph along the coast of the sf bay area
from late tonight through early Monday afternoon. More widespread
gusty winds are then likely from late Tuesday through Wednesday
when southwest winds may gust up to 40 mph at the coast and in
the hills.

Southerly flow ahead of this system will result in mild
temperatures through early Wednesday, with cooling then expected
late Wednesday into Thursday. A forecast update earlier this
evening included increasing temperatures, particularly at night,
from Monday night through Tuesday night.

Longer range models indicate dry conditions will return by Friday
and continue into the weekend, although rain may develop in the
north bay by Sunday afternoon.

Aviation As of 9:41 pm pdt Sunday...VFR extending through the
evening with southerly wind flow, drying lower levels; the wrf
model's boundary layer and surface humidities initialized well
except rhs are over-forecast along the monterey county coast. High
pressure moving to the central coast is setting up a smx-sfo
pressure gradient, currently 2.0 mb, and the sfo-acv gradient is
3.1 mb. An eastern pacific trough will bring lowering ceilings,
mainly to the bay area, late tonight and Monday. MVFR ceilings
with light to moderate rain preceding an incoming cold front, post
frontal wind shifts over to sw-w direction Monday. Ifr ceilings
and visibilities in moderate to heavy rain over the north bay
mainly Monday morning. Light rain with a slow moving and weakening
cold front eventually arrives along the north central coast Monday
evening, front may stall in vicinity of central coast Monday night
and Tuesday.

Vicinity of ksfo...VFR, wind SE shifting to westerly by 23z Monday.

Tempo light rain 11z-15z Monday with gradually lowering ceilings
becoming MVFR in rain by 15z. Showers with frontal passage diminish
through Monday night.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR, wind e-se with SE wind increasing
in the salinas valley Monday morning and afternoon prior to cold
frontal passage late in the afternoon or evening. Light rain
developing 21z-22z and lasting into the evening as slow moving,
weakening cold front arrives, possibly stalling in the vicinity of
the central coast Monday night and Tuesday.

Marine As of 8:44 pm pdt Sunday... Winds southerly and rain
developing through Monday morning ahead of approaching low
pressure system and cold front. Gusty winds can be expected ahead
of the front. Showers linger Monday night and Tuesday. Rain
develops again during the mid-week then dry weather returns late
week.

Mtr watches warnings advisories
Tngt Sca... Pt reyes to pigeon pt 0-10 nm from 3 am
sca... Pigeon pt to pt pinos 0-10 nm from 3 am
sca... Pt arena to pigeon pt 10-60 nm
sca... Pt arena to pt reyes 0-10 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
public forecast: dykema
aviation marine: canepa
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 3 mi76 min SE 1.9 51°F 1021 hPa37°F
MLSC1 - Moss Landing, South Harbor, CA 4 mi29 min Calm G 0 50°F 1022.1 hPa45°F
46092 - MBM1 16 mi47 min S 3.9 55°F 56°F1021.3 hPa (-0.0)
46240 - Cabrillo Point, Monterey Bay, CA (158) 18 mi31 min 57°F3 ft
MEYC1 19 mi85 min 57°F1021.6 hPa
46114 - West Monterey Bay, CA 33 mi31 min 56°F7 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 34 mi71 min S 9.7 G 12 56°F 57°F8 ft1020.9 hPa (+0.3)
46239 - Point Sur, CA (157) 40 mi31 min 56°F7 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, CA6 mi68 minN 510.00 miFair49°F42°F77%1021.5 hPa
Salinas, Salinas Municipal Airport, CA16 mi68 minN 010.00 miFair53°F39°F61%1022.4 hPa
Monterey Regional Airport, CA19 mi67 minSE 510.00 miFair51°F39°F66%1022.7 hPa
Hollister, CA, CA19 mi66 minN 010.00 miFair50°F39°F67%1022 hPa

Wind History from WVI (wind in knots)
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
Last 24hrNW5NW3NW4CalmN3NW3NW4N3CalmCalmSE3SE4CalmCalmW7W7SW7SW6W4W3CalmN4N5N4
1 day agoCalmSW4N3N4N4CalmCalmCalmCalmCalmE3S3W7S7W10SW8SW9--5E5E4CalmN3N3
2 days agoCalmNW3N3NW3N3N3NW4CalmCalmCalmCalmCalmE4CalmS3W6W6W5CalmCalmCalmN3CalmN3

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
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Point Pinos, California Current
   EDIT      (on/off)   Help   One Week of Data
Point Pinos
Click for Map
Mon -- 01:00 AM PDT     0.53 knots Max Flood
Mon -- 03:56 AM PDT     -0.00 knots Slack
Mon -- 07:04 AM PDT     Sunrise
Mon -- 07:04 AM PDT     -0.83 knots Max Ebb
Mon -- 10:20 AM PDT     Moonset
Mon -- 11:04 AM PDT     0.00 knots Slack
Mon -- 02:02 PM PDT     0.61 knots Max Flood
Mon -- 05:24 PM PDT     -0.00 knots Slack
Mon -- 07:23 PM PDT     Sunset
Mon -- 07:38 PM PDT     -0.43 knots Max Ebb
Mon -- 11:09 PM PDT     0.00 knots Slack
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
0.40.50.50.3-0-0.4-0.7-0.8-0.8-0.6-0.3-00.30.50.60.60.40.1-0.2-0.4-0.4-0.3-0.2-0

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 (2,6,7,8)
      (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.