Marine Weather and Tides
7/21/2018 Trying to make page Mobile Friendly
|Sunrise 6:01AM||Sunset 8:27PM||Saturday July 21, 2018 8:15 PM PDT (03:15 UTC)||Moonrise 2:26PM||Moonset 12:36AM||Illumination 68%|
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|PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 154 Pm Pdt Sat Jul 21 2018 |
.small craft advisory in effect until 10 pm pdt this evening...
Tonight..SW winds 10 to 20 kt...diminishing to 5 to 15 kt after midnight. Gusts up to 30 knots...becoming 25 kt after midnight.
Sun..SW winds 10 to 20 kt with gusts up to 30 kt.
Sun night..SW winds 10 to 20 kt with gusts up to 30 kt.
Mon..SW winds 15 to 25 kt with gusts up to 35 kt.
Mon night..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue..SW winds 10 to 20 kt with gusts up to 30 kt.
Tue night..W winds 10 to 20 kt with gusts up to 30 kt.
Wed..W winds 10 to 20 kt.
Thu..SW winds 10 to 20 kt.
|PZZ500 154 Pm Pdt Sat Jul 21 2018 |
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A weak low pressure system off the coast will produce light to moderate winds over the coastal waters this weekend. Northwesterly winds are then forecast to increase through much of the coming week. Two long period southerly swells will impact the region this weekend and early next week.
7 Day Forecast for Marine Location Near Shell Ridge, CAHourly EDIT Help
Area Discussion for - San Francisco/Monterey Bay Area, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 kmtr 212330|
area forecast discussion
national weather service san francisco bay area
430 pm pdt Sat jul 21 2018
Synopsis Seasonable conditions will remain in place through
Monday. High pressure will build over the region for the middle
part of the week bringing hot temperatures to interior areas and
in the mountains.
Discussion As of 01:57 pm pdt Saturday... A few clouds continue
to stream over the bay area and monterey bay regions this
afternoon as seen on visible satellite, while day time high temps
continue to warm to seasonable norms. Sunday and Monday will
continue to reflect normal july conditions with low clouds and fog
along the coast overnight and near normal temps across the region
each day. Monsoonal moistures remains to our east, mainly
impacting the sierras.
The area of forecast for this afternoons forecast package is the
heat that will creep into the area Tuesday through Thursday. 500
mb high pressure over the 4 corners region will drift to the west
the next couple days, then set up shop near the ca az border. As
it makes the shift the high pressure will strengthen to near 599
dam, ridging into the bay area region and causing subsidence in
the air column. As this pattern sets up looking for a quick heat
up on Tuesday and remaining into Thursday. Since our area of
responsibility will be on the edge of the heat dome, the main
areas of focus will be for the SE portion of monterey county, most
of san benito county, and the eastern portion of santa clara
county. It will also cook for the far NE portion of napa county
Tuesday and Wednesday. Onshore flow is expected to remain in place
and keep the remainder of the bay area only a little above
seasonal averages. We will be watching how the winds are shaping
up over the coming days. If the winds calm on Tuesday Wednesday
afternoon, effectively eliminating the onshore push, temps could
ramp up in the bay area core. Models are not indicating this
currently, but bears watching. With this synoptic scale pattern
change coming and the ridge bringing in 850 mb temps around 25c,
we went ahead and took the preemptive step of issuing a heat
advisory with significant lead time. The heat advisory will start
around 11 am on Tuesday and run through Wednesday at 9 pm. Due to
the warm airmass aloft, the overnight lows in the hills and
mountains will be rather high, likely in the 70s and low 80s.
Valleys will dip into the 50s and 60s, so the heat recovery|
overnight will be for lower elevations. This is why the heat
advisory covers mainly elevated terrain. If models hold true, the
heat advisory may need to be extended into Thursday, as it looks
much like the setup taking place on Tuesday.
Friday will bring a noticeable change as the dome of high
pressure is forecast to shift to the east again due to low
pressure moving into the pac nw. This pattern will help to shift
the heat out and bring the region back into seasonable norms.
Overall... Typical july conditions Sunday Monday followed by an
interior heat up Tuesday through Thursday with a week punctuated
by a return to seasonal norms.
Aviation As of 4:30 pm pdt Saturday... For 00z tafs. Conditions
this evening similar to last evening with early return of ifr
ceilings at kmry and ksts. Ifr ceilings likely to develop at ksts
and koak by around 08z. Ksjc and klvk expected to remainVFR
overnight. Most uncertain forecast is once again for ksfo where
low ceilings may develop, but most likely late and around 12z.
Otherwise, expect clearing on Sunday to occur by 17z in most
areas. Light to moderate onshore winds.
Vicinity of ksfo...VFR for most of period. Ifr ceilings may
develop between 12-16z but confidence is rather low. West winds
up to 20 knots through early evening, otherwise light winds.
Sfo bridge approach... Similar to sfo.
Monterey bay terminals... Ifr ceilings likely by 01z and continuing
through 17z Sunday. Light winds.
Marine As of 01:57 pm pdt Saturday... A weak low pressure system
off the coast will produce light to moderate winds over the
coastal waters this weekend. Northwesterly winds are then forecast
to increase through much of the coming week. Two long period
southerly swells will impact the region this weekend and early
Mtr watches warnings advisories
Tngt Sca... Sf bay until 10 pm
public forecast: bfg
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Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Wind History for Union Pacific Rail Road Bridge (UPRR), CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Concord, Buchanan Field, CA||6 mi||23 min||SSW 10||10.00 mi||Fair||78°F||46°F||32%||1013.4 hPa|
|Oakland, Metro Oakland International Airport, CA||17 mi||23 min||W 13||10.00 mi||Partly Cloudy||64°F||59°F||84%||1016.2 hPa|
|Hayward, Hayward Air Terminal, CA||17 mi||22 min||NW 10||10.00 mi||Fair||66°F||57°F||75%||1016.9 hPa|
|Livermore, Livermore Municipal Airport, CA||18 mi||23 min||W 12||10.00 mi||Fair||71°F||55°F||57%||1014.7 hPa|
Wind History from CCR (wind in knots)
|1 day ago||W||W||NW||NW||W||NW||NW||W||W||NW||W||W||W||W||NW||NW||NW||W||W||W||NW||W||W||W|
|2 days ago||SW||N||N||NW||N||NW||NW||NW||NW||NW||NW||W||W||NW||NW||NW||NW||NW||NW||W|
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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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for San Francisco/Monterey Bay Area, CA (23,6,7,8)(on/off)  Help
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