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 7:10AM||Sunset 7:23PM||Thursday March 21, 2019 5:06 AM PDT (12:06 UTC)||Moonrise 7:42PM||Moonset 7:12AM||Illumination 100%|
7 Day Forecast for Marine Location Near Point Arena, CAHourly EDIT Help
Area Discussion for - San Francisco/Monterey Bay Area, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 kmtr 211138|
area forecast discussion
national weather service san francisco bay area
438 am pdt Thu mar 21 2019
Synopsis Isolated showers will be possible across the region
through early afternoon, especially along coastal areas of the
central coast. Dry conditions develop tonight ahead of the next
frontal system that will bring widespread rainfall to the region
Friday into Friday night. Mainly dry conditions return for a
majority of the weekend with unsettled weather likely throughout
at least the first half of next week.
Discussion As of 03:46 am pdt Thursday... A weak short-wave
disturbance approaching the coast this morning has resulted rain
showers off of the big sur coast which are beginning to push
inland. Elsewhere, mainly dry weather conditions prevail with
temperatures ranging from the upper 30s in the north bay valleys
to middle upper 40s elsewhere (near 50 around san francisco). As
the weak system pushes inland through the day, cannot rule out
isolated showers from the big sur coast up to the santa cruz
mountains. The short-range models do indicate the potential for
isolated showers as far north as the greater san francisco bay
area as well. However, widespread rainfall is unlikely with any
lingering showers likely to diminish through the evening. Daytime
temperatures are forecast to warm into the upper 50s near the
coast to middle 60s inland.
Dry weather conditions are then forecast tonight into early Friday
morning ahead of an approaching frontal boundary. This next system
will move from northwest to southeast across the region on Friday
with light to occasionally moderate rainfall. Most indications are
the santa cruz mountains northward through the north bay will see the
most with amounts from 0.50" to 0.75" in most urban areas (lesser
amounts in the east bay valleys and south bay). Meanwhile, 1.00" to
1.50" will be possible in the coastal ranges and north bay hills.
Rainfall amounts will tapper off across the central coast with most
locations picking up less than 0.25". Locally breezy conditions are
also expected ahead of and in wake of the frontal passage with gusts
to around 35 to 40 mph. Post frontal showers may linger into Friday
night before diminishing region-wide on Saturday. Saturday and
Sunday appear to be mainly dry in between weather systems with
daytime temperatures generally in the 60s on Saturday to potentially
upper 60s (inland) by Sunday.
Weather conditions next week continue to look unsettled with another
round of precipitation returning as early as Sunday night. However,
the forecast models don't agree on the specifics to timing, amounts
and location of heaviest precipitation at this time. With this said,|
the ensembles point toward the potential for more widespread
rainfall through at least the first half of next week. The forecast
will be worth monitoring in the coming days.
Aviation As of 4:38 am pdt Thursday... For 12z tafs. Infrared
satellite imagery shows an upper level low spinning southeastward
toward the central coast this morning. There have been some echos
on radar overnight, but there returns have trended downward in
coverage over the past several hours. With the isolated showers
mainly confined from mry and points south,VFR conditions are
generally expected to prevail at the TAF sites through the day.
The exception to this would be sts and perhaps lvk where some
patching morning fog may bring reduced visibilities. Light winds
this morning are forecast to become onshore this afternoon. By the
end of the TAF period, the next storm system will be approaching
the region with winds expected to become southerly once again in
the 24-36 hour timeframe.
Vicinity of ksfo...VFR conditions are forecast to prevail through
the day. Winds will remain relatively light in the morning and
will become onshore around 10-15 kt this afternoon. High clouds
will increase through the period with winds becoming southerly by
the end of the 30 hour TAF as the next system approaches.
Sfo bridge approach... Similar to ksfo.
Monterey bay terminals... Isolated showers have been detected
within the vicinity of mry this morning as an upper level low
tracks southeasterly along toward the central coast. Other than
a stray shower or two over the next few hours, offshore winds
this morning will become onshore this afternoon for both mry and
Marine As of 03:46 am pdt Thursday... Rain shower chances will
continue through the early morning hours, mainly from pigeon point
and locations south. Weak high pressure will build off the
southern california coast through the day bringing light west to
northwest winds. Winds will turn southerly and increase on Friday
as a frontal system moves in. A moderate- period west swell will
continue through Thursday before a longer period west to northwest
swell arrives on Friday.
Mtr watches warnings advisories
Public forecast: rgass
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Wind Forecast for San Francisco/Monterey Bay Area, CA (8,2,3,4)(on/off)  Help
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