Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Squaw Valley, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:08AMSunset 7:42PM Wednesday April 25, 2018 11:12 AM PDT (18:12 UTC) Moonrise 3:24PMMoonset 3:57AM Illumination 79% Phase: Waxing Gibbous; Moon at 10 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
7 Day Forecast for Marine Location Near Squaw Valley, CA
   Hourly   EDIT   Help
location: 36.7, -119.19     debug


Area Discussion for - San Joaquin Valley/Hanford, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 khnx 251116 cca
afdhnx
area forecast discussion... Correction
national weather service san joaquin valley - hanford ca
408 am pdt Wed apr 25 2018

Synopsis
Warm temperatures and dry conditions will continue for the next
few days as high pressure dominates. There will be slight chances
for afternoon showers and thunderstorms for the higher elevations
of the sierra nevada Wednesday and will continue into the weekend
as a low pressure system moves into northern california. The main
system impacts will be increased winds and clouds for all other
areas as the system moves through the region.

Discussion
Ridge axis extending from the desert SW into the pac NW will hold
on today with dry conditions and continued above normal
temperatures across the central ca interior. This feature will
hold in place one more day into Thursday before all eyes turn
west to the large scale closed upper low center currently becoming
more organized in the epac.

Model guidance has been having some trouble on where to track the
low over the past few days. Guidance is becoming more in agreement
now, even through day three. Deterministic runs of the GFS ecm nam
are surprisingly in decent agreement tracking the low center
across NRN ca through Saturday evening. Initial impacts will be
breezy conditions developing along the west side of the valley on
Friday as a low level cool marine air intrusion into the sjv
pushes across merced and gradually continues south into kern
county due to increased gradients and a deepening marine layer
along the coast. H500 heights will remain high, so widespread
synoptic cooling will hold off until Saturday for the higher
elevations.

The upper low center will move into the great basin and remain
nearly stationary as it gets ripped in two. Strong westerlies
will take a piece of it into the midwest and another piece will
merge with a shortwave dropping south along the sierra on Tuesday.

This low will dig into SRN nv by Wednesday.

Model guidance is indicating unstable conditions across the high
sierra on Thursday afternoon with pwat values around 0.75 to
nearly 1.0 inch. Some stronger storms are possible as SPC mentions
the sierra, mainly north of kings canyon for the possibility of
strong storms. Hail and locally heavy rain is possible with these.

Frequent lightning is also possible. Campers and hikers are
encouraged to keep an eye to the sky Thursday afternoon.

With the low center crossing NRN ca on Saturday, we are
forecasting showers and isolated thunderstorms in the sierra on
Saturday. Deep moisture is limited and pwat's are only around 0.50
inches. So whatever rain does fall will not be real heavy. With
continued PVA and increased upslope flow Saturday night into
Sunday with the associated trough moving through we will see a
chance of showers mainly north of the kern county line. Gusty
winds will be a concern as the trough moves through the kern
county mountains and will need to be concerned about gusty winds
through and below the passes as well as the kern county desert
region.

There will be a brief break in the action on Monday as the upper
level shortwave will dig a low center into SRN nv on Tuesday and
bring more unsettled weather to the sierra Tuesday afternoon and
continue into Wednesday before the low center exits to the east
late Wednesday evening.

Snow levels will be about normal with the systems, with the first
one bringing snow levels down to around 5000 feet on Sunday
morning behind the trough. Snow showers are possible in the
yosemite national park, but not looking favorable for the ynp
valley. We will see snow levels rise to around 7000 feet by
Tuesday and then lower to around 6000 feet as the second trough
moves through Tuesday evening with snow showers expected.

Moisture will limited and widespread heavy snow is not expected at
this time to warrant any statements.

Aviation
Vfr conditions will prevail across the central ca interior during
the next 24 hours.

Air quality issues
None.

Certainty
The level of certainty for days 1 and 2 is high.

The level of certainty for days 3 through 7 is medium.

Certainty levels include low... Medium... And high. Please visit


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Visalia, Visalia Municipal Airport, CA28 mi77 minS 610.00 miFair69°F53°F57%1017.2 hPa

Wind History from VIS (wind in knots)
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
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last 24hrSW44W3W4NW8N5N6W6W5NW7NW7NW5NW5NW8NW5NW5NW4W4CalmCalmCalmS3S63
1 day agoCalm3Calm4NW64NW5N4CalmNW5NW5NW3CalmCalmNE3E3S3E3SE4SE4SE5SE6SE5SE6
2 days agoCalmS3--W34SW3N5N4NW3W5NW4NW3CalmCalmCalmCalmE3SE4SE3E3SE5S6S53

Tide / Current Tables for
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help
Tide / Current Tables for
   EDIT      (on/off)   Help
Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_P
GOES Local Image of Southwest    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 Joaquin Valley/Hanford, CA (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station San Joaquin Valley, 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.