Marine Weather and Tides
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 7:11AM||Sunset 7:20PM||Tuesday March 19, 2019 3:48 PM PDT (22:48 UTC)||Moonrise 5:00PM||Moonset 5:39AM||Illumination 99%|
7 Day Forecast for Marine Location Near Santa Cruz city, CAHourly EDIT Help
Area Discussion for - San Francisco/Monterey Bay Area, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 kmtr 192135 cca|
area forecast discussion
national weather service san francisco bay area
234 pm pdt Tue mar 19 2019
Synopsis A cooling trend will begin today as cloud cover
increases over the region ahead of an approaching weather system.
Rain showers will develop over the region tonight into Wednesday
with an unsettled pattern likely to continue through late week.
While dry conditions are possible this weekend, unsettled weather
will return heading into next week.
Discussion As of 02:40 pm pdt Tuesday... A negatively tilted
trough continues to slowly approach california from the west
this afternoon. This storm system is aligned nearly parallel with
the coastline from point arena through santa barbara and has
already brought increased cloud cover, cooler temperatures, and
higher humidities to the region thus far today.
Southerly winds will progressively strengthen ahead of the cold
front through the remainder of the day, becoming gusty (peak
gusts up to 40-50mph in the windiest spots) along the coast and
over the higher terrain with breezy winds elsewhere.
Latest kmux radar imagery is detecting light reflectivity returns
ahead of the leading edge of a cold frontal boundary approximately
60 miles off of the coast. Despite the close proximity to the
area most models delay the onset of precipitation moving inland
until much later this evening, owing to the negative tilt and
sluggish speed of the parent trough. The latest model output has
decreased the overall precipitation intensity and coverage versus
previous runs. Storm total precipitation will range from 1.25-2.25"
for the higher terrain of the santa cruz and big sur mountains
while urban areas will generally range from 1 5" to 1 3", with
rain shadowed areas on the lower end of the spectrum. Hrrr model
output confines precipitation mostly in broken bands and scattered
showers wrapped closely on the eastern flank of upper low as it
lifts northeastward across the region. Previous model runs showed
somewhat more organization and strength than the current runs and
have reduced overall QPF as a result.
Models generally agree that precipitation should begin to spread
inland between 10pm and midnight tonight, however, a few precursor
showers could arrive in time for this evenings outbound commute.
Rain intensity and coverage should scale upwards after midnight as
the upper low shifts inland and lifts northeastward over the san
francisco bay area. Isolated thunderstorms will be possible
overnight tonight through Wednesday morning due to an increasingly
unstable environment advecting into the region. The overall
weaker model output from the latest runs may increase the
potential for thunderstorms Wednesday as a result increased cloud
breaks leading to more surface heating and further destabilization
of the atmosphere.
A secondary vorticity pulse on the rear flank of the broader
trough will descend into the local area later Wednesday into
Wednesday night and extend the possibility of a few lingering
showers potentially into early Thursday. Confidence is relatively
low regarding how this second disturbance will interact with the
initial disturbance with some models introducing an increased
chance of showers over the higher terrain into Thursday morning.
A transitory high pressure ridge will develop by midday Thursday
allowing for a brief warming drying trend, however, another storm
system is set to descend into the region from the gulf of alaska|
by Friday morning. Fridays storm system will move from north to
south and bring the bulk of any precipitation to the north bay.
Precipitation along the north bay coastal range could approach
1.00" while the north bay valleys pick up 1 2 to 2 3". Much less
precipitation is expected south of the golden gate, with 1 4 to
1 3" in the immediate sf bay shoreline, and progressively less
Drier weather will prevail through most of the weekend with a
slight warming trend into Sunday but a third storm system will
begin to advance on the region early next week. Forecast models
and ensemble members continue to pepper later Monday through early
Wednesday as wet time periods, however, there is still a bit too
much noise to pin down exactly when, where, and how much to
Aviation As of 10:32 am pdt Tuesday... For 18z tafs.VFR
conditions into this evening with high clouds overhead. The bay
area has seen another morning of occasional haze reducing vis
temporarily to MVFR, this may continue into the early afternoon.
High res models show showers arriving from south to north between
03z-05z tonight and continuing on and off through the period. As
showers approach, expect low clouds to develop across the region.
MVFR CIGS will be possible tonight and tomorrow morning along with
periods of MVFR vis during heavier showers. Southerly winds today
may briefly turn onshore this afternoon before returning out of
the SE to SW overnight. Winds may become gusty overnight around
Vicinity of ksfo...VFR mainly with occasional MVFR vis this
morning due to haze. High clouds will continue ahead of an
approaching weather system before CIGS lower to MVFR overnight
when shower chances increase. SE winds expected overnight and may
become gusty at times as the front moves through.
Sfo bridge approach... Similar to ksfo.
Monterey bay terminals...VFR conditions with high clouds. MVFR
cigs to develop overnight as shower chances increase. SE winds
this morning will become onshore this afternoon before returning
out of the SE and increasing overnight. Gusty winds forecast down
the salinas valley overnight.
Marine As of 09:00 am pdt Tuesday... Southerly winds will
continue today and tonight ahead of an approaching low pressure
system and cold front moving in from the west. Expect winds to
increase and veer to the west northwest on Wednesday. A long
period west swell will arrive today increasing shoaling on bars
and harbor entrances.
Mtr watches warnings advisories
Tngt Sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Sf bay from 3 am
sca... Pt arena to pigeon pt 10-60 nm from 3 am
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Pt arena to pt reyes 0-10 nm from 3 am
sca... Rough bar advisory for sf bar from 9 pm
sca... Mry bay
public forecast: drp
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Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|46092 - MBM1||15 mi||35 min||S 1.9||57°F||56°F||1010.3 hPa (-1.6)|
|MLSC1 - Moss Landing, South Harbor, CA||17 mi||33 min||WNW 8.9 G 26||58°F||1010.6 hPa||49°F|
|ELXC1 - Elkhorn Slough Reserve, CA||18 mi||64 min||WNW 8||61°F||1011 hPa||52°F|
|46042 - MONTEREY - 27NM West of Monterey Bay, CA||24 mi||59 min||SE 7.8 G 7.8||56°F||56°F||5 ft||1010.2 hPa (-1.5)|
|46114 - West Monterey Bay, CA||24 mi||49 min||56°F||6 ft|
|46240 - Cabrillo Point, Monterey Bay, CA (158)||25 mi||49 min||57°F||2 ft|
|MEYC1||26 mi||73 min||56°F||1010.3 hPa|
|RTYC1 - 9414523 - Redwood City, CA||38 mi||31 min||NW 8 G 8.9||67°F||61°F||1010.2 hPa|
|46239 - Point Sur, CA (157)||44 mi||49 min||55°F||5 ft|
Wind History for Monterey, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Watsonville, Watsonville Municipal Airport, CA||12 mi||56 min||W 8||10.00 mi||Fair||64°F||48°F||56%||1010.4 hPa|
Wind History from WVI (wind in knots)
|1 day ago||SW||W||W||W||SE||Calm||Calm||Calm||NW||Calm||Calm||NW||NW||N||N||N||NW||Calm||Calm||Calm||SW||SW||W||W|
|2 days ago||W||W||W||W||Calm||S||Calm||NW||N||NW||NW||N||NW||NW||Calm||Calm||Calm||Calm||E||Calm||Calm||S||SW |
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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 (18,4,5,8)(on/off)  Help
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