Saturday, August24, 2019 L-36.com


Marine Weather and Tides
Twin Lakes, CA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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 7:49PM Saturday August 24, 2019 5:06 AM PDT (12:06 UTC) Moonrise 12:00AMMoonset 2:05PM Illumination 35% Phase: Waning Crescent; Moon at 24 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- 244 Am Pdt Sat Aug 24 2019
Today..W winds 5 to 10 kt, increasing to 10 to 15 kt this afternoon. W swell 2 to 4 ft at 9 seconds and sw around 2 ft at 15 seconds.
Tonight..W winds around 5 kt. Wind waves 1 to 2 ft. W swell 2 to 3 ft at 12 seconds and sw around 2 ft at 15 seconds.
Sun..W winds 10 to 15 kt. Wind waves 1 to 2 ft. W swell 2 to 3 ft at 12 seconds and sw around 2 ft at 15 seconds.
Sun night..W winds 5 to 10 kt. W swell 2 to 4 ft at 12 seconds.
Mon..W winds 10 to 15 kt. W swell 2 to 4 ft at 12 seconds.
Mon night..W winds around 5 kt. W swell 2 to 4 ft at 11 seconds.
Tue..W winds 5 to 10 kt. W swell 2 to 3 ft.
Wed..SW winds 5 to 10 kt. W swell 2 to 3 ft. Locally lower winds and seas across sheltered portions of the bay.
PZZ500 244 Am Pdt Sat Aug 24 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Light northerly winds will persist over the northern outer waters while light southwesterly winds will develop elsewhere through the weekend. Steep, short period northwesterly swells will continue to decrease through the weekend with period becoming 7 to 8 seconds. Moderate period southerly swells will increase to 2 to 3 feet on Sunday and persist through early next week with light moderate period northwesterly swell continuing through the period.


7 Day Forecast for Marine Location Near Twin Lakes CDP, CA
   Hourly   EDIT   Help
location: 36.83, -122.01     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 241158
afdmtr
area forecast discussion
national weather service san francisco bay area
458 am pdt Sat aug 24 2019

Synopsis High pressure will bring a fairly seasonable weather
pattern to the bay area this weekend into early next week. The
marine layer will persist along the coast along with onshore flow
keeping temperatures warm near the coast and bays. Inland
temperatures will trend hotter as the strong high pressure builds.

Remnants of tropical storm ivo will pass offshore Tuesday and
Wednesday with increasing clouds and higher humidity developing.

Discussion As of 3:35 am pdt Saturday... Fairly strong high
pressure ridge will stretch from the eastern pacific to over
california and towards arizona. Heights will rise to around 594 dm
over the bay area by this afternoon and then hold fairly steady
through about Tuesday. The fort ord profiler shows the marine
layer as deep as 2500 feet but on average it looks to be closer to
2000 feet across the region early this morning. In general the
strong ridge should start to compress the layer but low level
southerly flow continues to advect marine air locally into the bay
and valleys. Despite the strong ridge the 850 mb temps are only
around 21-22 celsius this weekend. This in combination with
onshore flow will keep things from getting too hot. In general the
ridge will allow temps to trend a few degrees above normal but
expecting mainly 70s 80s around the bay with 90s farther inland.

No big changes of note Sunday and Monday but the trend should be
for hotter temps inland as mid and upper 90s become more
widespread due to the ridge strengthening and the marine layer
compressing. Heat risk values become moderate through the period
for the interior valleys but the lack of widespread triple digit
heat should preclude the need for any headlines. Overall trend for
above normal temps but nothing too out of the ordinary for late
august.

The most interesting weather item to monitor will continue to be
the remnants of tropical storm ivo moving northward. The models
continue to be fairly consistent in their handling of this feature
as it shifts northward and interacts with the strong ridge. While
we continue to mention the increase in mid high clouds as well as
higher dewpoints as this feature passes offshore Tuesday and
Wednesday the main concern for the state will be the possibility
of thunderstorms.

The general model consensus has been to keep the main moisture and
instability well offshore, west of point conception and big sur on
Tuesday. However, the 06z GFS brings the moisture and instability
closer to shore and clips the north bay with some elevated values
of most unstable CAPE as well as modified total totals in excess
of 30. In fact the 06z GFS even generates some spotty QPF over
the north bay early weds morning. As we've been mentioning in
previous discussions the details of the storm track will remain
fluid. The conceptual model strongly suggests there will be some
type of convective activity associated with this feature as the
tropical moisture and decaying low interact with the upper ridge
and an incoming mid-latitude shortwave. However and this is to be
stressed, at this time the best chance for t-storms looks to be
north and east of the bay area (think trinity alps, mt shasta,
modoc, northern sierra). That being said cant rule out a scenario
where our CWA is impacted (and at this time the north bay would be
in the 5-10% range late Tuesday night early weds am). Due to the
nature of the system, any lightning would tend to be wet.

However, fuels are trending to their driest levels this summer and
an abundant lightning event could lead to new starts. So that
remains a very low probability scenario but worth monitoring as
impacts could be significant.

The disturbance should quickly move northward by later weds
afternoon evening followed by rebuilding high pressure and a
return of dry seasonable wx.

Aviation As of 04:58 am pdt Saturday... Depth of the marine
layer varies around 1500-2500 feet across the area this morning.

Southerly gradient has held steady at around 1 mb with light
southerly winds in the valleys such as at ksjc and ksns. CIGS are
higher than previous mornings with ifr to MVFR along the coast and
sf bay as well as the north bay valleys whileVFR continues
inland. Stratus should begin to retreat to the coast after sunrise
withVFR developing at all TAF sites by late morning. Winds this
afternoon turning onshore and increasing to 10-15 kt. Stratus will
likely impact similar locations tonight with lower CIGS as high
pressure compresses the marine layer.

Vicinity of ksfo... Stratus rapidly filling in near the terminal
and approach with MVFR CIGS at times through 16-17z. Stratus may
be patchy through the morning especially if any light
southwesterly winds mix down to the surface.VFR this afternoon
with winds increasing to near 15kt.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Ifr CIGS this morning withVFR developing
around 17-18z. Ifr CIGS returning early to mid evening tonight.

Marine As of 02:53 am pdt Saturday... Light northerly winds will
persist over the northern outer waters while light southwesterly
winds will develop elsewhere through the weekend. Steep, short
period northwesterly swells will continue to decrease through the
weekend with period becoming 7 to 8 seconds. Moderate period
southerly swells will increase to 2 to 3 feet on Sunday and
persist through early next week with light moderate period
northwesterly swell continuing through the period.

Mtr watches warnings advisories
Tday Sca... Sf bay from 12 pm
public forecast: rww
aviation: st
marine: st
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
46092 - MBM1 6 mi57 min SE 3.9 59°F 58°F1012 hPa (+0.3)
MLSC1 - Moss Landing, South Harbor, CA 12 mi63 min S 2.9 G 8 60°F 1012.5 hPa (-0.0)58°F
ELXC1 - Elkhorn Slough Reserve, CA 14 mi82 min ESE 1 60°F 1011 hPa58°F
46240 - Cabrillo Point, Monterey Bay, CA (158) 15 mi37 min 61°F2 ft
MEYC1 17 mi91 min 62°F1012.3 hPa
46114 - West Monterey Bay, CA 20 mi37 min 61°F5 ft
46042 - MONTEREY - 27NM West of Monterey Bay, CA 21 mi77 min 7.8 G 12 60°F 61°F6 ft1011.6 hPa (+0.3)
46239 - Point Sur, CA (157) 34 mi37 min 60°F6 ft
RTYC1 - 9414523 - Redwood City, CA 48 mi55 min WNW 2.9 G 4.1 64°F 76°F1012.4 hPa

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. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Watsonville, Watsonville Municipal Airport, CA14 mi74 minNNW 310.00 miPartly Cloudy60°F55°F86%1012.2 hPa
Monterey Regional Airport, CA19 mi73 minN 010.00 miOvercast63°F55°F78%1013.6 hPa
Salinas, Salinas Municipal Airport, CA24 mi74 minSE 410.00 miOvercast62°F57°F84%1013 hPa

Link to 5 minute data for KWVI

Wind History from WVI (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
Last 24hr--S5W3NW33W6W10W13W13
G19
W11
G18
W13
G18
6W10W9--------W3CalmCalmCalmNW3Calm
1 day agoCalmCalmCalmCalmSW3S6S7S6S9S9S7--SE10------E4--Calm--CalmS4SE6NE4
2 days ago----CalmCalmS33SW6--SW66S8S6S7S6--S5SE3--E4Calm--SE4E4E3

Tide / Current Tables for Santa Cruz, Monterey Bay, California (sub)
   EDIT   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
Sat -- 12:32 AM PDT     Moonrise
Sat -- 02:05 AM PDT     0.00 knots Slack
Sat -- 04:54 AM PDT     0.42 knots Max Flood
Sat -- 06:32 AM PDT     Sunrise
Sat -- 08:21 AM PDT     -0.00 knots Slack
Sat -- 10:27 AM PDT     -0.32 knots Max Ebb
Sat -- 01:29 PM PDT     0.00 knots Slack
Sat -- 03:04 PM PDT     Moonset
Sat -- 04:40 PM PDT     0.36 knots Max Flood
Sat -- 07:30 PM PDT     -0.00 knots Slack
Sat -- 07:46 PM PDT     Sunset
Sat -- 10:56 PM PDT     -0.73 knots Max Ebb
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
-0.4-0.2-00.20.40.40.40.30.1-0.1-0.3-0.3-0.2-0.10.10.20.30.40.30.1-0.1-0.4-0.6-0.7

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 (8,2,3,4)
      (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.