Friday, July19, 2019 L-36.com


Marine Weather and Tides
Montezuma, KS

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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:31AMSunset 9:01PM Friday July 19, 2019 6:50 PM CDT (23:50 UTC) Moonrise 10:02PMMoonset 8:01AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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
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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 201 Pm Pdt Fri Jul 19 2019
.small craft advisory in effect until 9 pm pdt this evening...
Rest of today..SW winds 15 to 25 kt with gusts up to 30 kt.
Tonight..SW winds 15 to 20 kt with gusts up to 25 kt.
Sat..SW winds 15 to 20 kt with gusts up to 25 kt.
Sat night..SW winds 10 to 15 kt.
Sun..SW winds 10 to 15 kt.
Sun night..SW winds 10 to 15 kt.
Mon..SW winds 15 to 20 kt with gusts up to 25 kt.
Tue..W winds 10 to 15 kt.
PZZ500 201 Pm Pdt Fri Jul 19 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Split flow will persist into the weekend with northwest winds over the northern and outer waters and southerly winds along the coast before gradually shift back out of the west to northwest on Sunday. Locally gusty northwesterly winds will continue over the northern outer waters into tomorrow morning. Additionally, expect breezy winds through the golden gate gap and northward into the delta this afternoon and evening. Steeper short period wind generated waves will remain the driver behind the sea state into next week along with a light long period southwest swell.


7 Day Forecast for Marine Location Near South San Francisco, CA
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location: 40.64, -100.36     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 192101
afdmtr
area forecast discussion
national weather service san francisco bay area
201 pm pdt Fri jul 19 2019

Synopsis An inland cooling trend will persist through Saturday
with periods of night and morning low clouds. A warming trend will
begin on Sunday and continue through next week as high pressure
centered over the four corners area builds westward over
california.

Discussion As of 02:00 pm pdt Friday... Models indicate a weak
upper trough overhead, bringing another day of near to slightly
below temperatures and benign weather. A surface trough with axis
just offshore remains in place, creating southerly winds along the
coast and northwesterly winds offshore. This has resulted in a
well-defined circulation about 40 miles offshore from pt reyes,
evident in the stratus and visible from satellite this afternoon.

Clouds have retreated back to the coast in most locations, with
the exception being around monterey bay where stratus is still
retreating from the coastal plain. Temperatures have warmed into
the 60s to low 70s along the coast, and into the 70s and 80s in
the inland valleys. For tonight, expect clouds to fill back in
across much of the inland valleys. Much of the sf bay shoreline
may see less cloud coverage as southerly flow continues.

An upper ridge centered over the four corners will begin to
strengthen this weekend and will expand northwestward over
california next week. A trough will also move into the eastern
pacific, with onshore flow continuing. The building ridge will
begin a warming trend over inland areas on Sunday which will
continue through next week. Highs by early next week in the inland
valleys will return to the 90s. Temperatures along the coast will
remain moderate due to the persistent sea breeze.

Moisture from the subtropics will begin to rotate around the upper
high next week, especially in the mid levels. At this time the
best chance of any instability and thunderstorms looks to remain
east of our area over the sierra. However, this will need to be
monitored in later forecasts as a shift to the west could increase
the chance of elevated convection and thunderstorms by the middle
of next week.

Aviation As of 10:34 am pdt Friday... For 18z tafs. The marine
layer has deepened to just over 2000 ft agl per the fort ord
profiler as satellite imagery shows stratus slowly eroding over
land.VFR conditions to prevail this afternoon and early evening
before MVFR ifr CIGS are expected to return tonight. At this time
similar coverage is forecast for tonight as was seen into this
morning. Southerly winds this morning will turn onshore by the
afternoon at around 10-15 kt.

Vicinity of ksfo...VFR with southerly winds this morning 10 kt or
less increasing and becoming more west to southwest at around 15
kt after 21z. Patchy low CIGS expected again overnight.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... A deeper marine layer has allowed stratus
to remain around the peninsula and over salinas longer this
morning than yesterday. Expecting stratus to erode over the next
hour or so.VFR conditions to prevail this afternoon before
another early return is forecast for this evening. Ifr to possibly
lifr CIGS overnight. Onshore winds into this evening 10-15 kt with
locally higher gusts down the salinas valley.

Marine As of 08:54 am pdt Friday... Split flow will continue
today and tomorrow with light to moderate northwest winds over the
northern and outer waters and southerly winds along the coast.

Locally gusty northwesterly winds over the northern outer waters
will persist into this evening. Winds along the coast will
gradually shift back out of the west to northwest into Sunday.

Steeper short period wind generated waves continue to dominate the
sea state along with a lighter long period southwest swell.

Mtr watches warnings advisories
Tngt Sca... Pt arena to pigeon pt 10-60 nm
public forecast: st
aviation: as
marine: as
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RTYC1 - 9414523 - Redwood City, CA 1178 mi51 min WNW 11 G 15 73°F 74°F1011.9 hPa (-1.0)
AAMC1 - 9414750 - Alameda, CA 1180 mi63 min W 11 G 14 67°F 67°F1012.9 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 1181 mi51 min W 14 G 16

Wind History for Alameda, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Dodge City, Dodge City Regional Airport, KS23 mi59 minS 25 G 317.00 miFair and Windy100°F62°F29%1004.1 hPa

Wind History from SFO (wind in knots)
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Last 24hrSW12SW14W18W12SW9W6SW5CalmCalmCalmS4S5S7S7S5S5S6S8S8
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1 day agoW14NW12W17NW15W13NW10NW9W8W8W7NW6NW5NW5W6W5CalmN3E4N7NE8NE6NE7SW7
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W8SW5SW3CalmCalmCalmCalmE3NE6NE5NE5N5NW11NW17NW18

Tide / Current Tables for Point San Bruno, San Francisco Bay, California
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Point San Bruno
Click for Map
Fri -- 01:44 AM PDT     6.92 feet High Tide
Fri -- 06:02 AM PDT     Sunrise
Fri -- 08:32 AM PDT     Moonset
Fri -- 09:02 AM PDT     -0.26 feet Low Tide
Fri -- 03:48 PM PDT     5.96 feet High Tide
Fri -- 08:28 PM PDT     Sunset
Fri -- 09:09 PM PDT     2.99 feet Low Tide
Fri -- 10:31 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.96.76.96.55.542.410.1-0.30.112.33.74.95.75.95.64.843.333.23.9

Tide / Current Tables for Oyster Point 2.8 mi E, South San Francisco Bay, California Current
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Oyster Point 2.8 mi E
Click for Map
Fri -- 02:29 AM PDT     -0.00 knots Slack
Fri -- 06:02 AM PDT     Sunrise
Fri -- 06:12 AM PDT     -1.84 knots Max Ebb
Fri -- 08:32 AM PDT     Moonset
Fri -- 09:32 AM PDT     0.00 knots Slack
Fri -- 12:38 PM PDT     1.06 knots Max Flood
Fri -- 04:03 PM PDT     -0.01 knots Slack
Fri -- 06:45 PM PDT     -0.95 knots Max Ebb
Fri -- 08:28 PM PDT     Sunset
Fri -- 09:27 PM PDT     0.00 knots Slack
Fri -- 10:31 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.60.2-0.3-1-1.6-1.8-1.7-1.2-0.50.20.7110.90.50-0.5-0.9-0.9-0.7-0.20.20.5

Weather Map and Satellite Images
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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.
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Wind Forecast for San Francisco/Monterey Bay Area, CA (19,4,5,8)
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Ground Weather Radar Station San Francisco Bay Area, CA
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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.