Friday, February28, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Kirkwood, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:32AMSunset 5:52PM Friday February 28, 2020 2:41 PM PST (22:41 UTC) Moonrise 9:16AMMoonset 10:44PM Illumination 28% Phase: Waxing Crescent; Moon at 5 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 Kirkwood, CA
   Hourly   EDIT   Help
location: 38.82, -120.06     debug


Area Discussion for - Reno, NV
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXUS65 KREV 281037 AFDREV

Area Forecast Discussion National Weather Service Reno NV 237 AM PST Fri Feb 28 2020

SYNOPSIS.

Unseasonable warmth continues today as high pressure remains in control. Clouds will be on the increase today as a strong cold front approaches on Saturday and Sunday. Strong and gusty winds are expected Saturday afternoon ahead of the front. Snow levels will plummet behind the front with accumulating snow possible for all valley floors Saturday evening into Sunday. Drier weather with temperatures warming again next week.

DISCUSSION.

A potent cold front will sweep through the Sierra and western Nevada Saturday and Sunday. This will provide strong and gusty winds ahead of the front Saturday afternoon followed by plummeting snow levels and chances for accumulating snow on valley floors.

Snow

The cold front is rather dynamic with frontogenetical forcing at lower levels (due to the sharp contrast in air masses) coupled with jet forcing aloft. As a result, snowfall will be concentrated in a narrower band along the front with a quick 2-4 hour period of snow possible.

Start time for snowfall will be as early as Saturday afternoon across northern Lassen county and the Surprise Valley. Onset time along the I-80 corridor across the Sierra through western Nevada looking about 10pm-midnight at this time. Areas south of Highway 50 generally looking from about 3am to sunrise.

Although not a strong winter system, the dynamic nature of the front will be more slider like with a quick/sudden burst of moderate to heavy snowfall possible as the front passes. As such, impacts to travel are expected Saturday evening into Sunday morning as the front passes. Snow amounts generally looking around 1-2 inches across western Nevada valleys with Sierra valleys seeing 2-5 inches and around 4-8 inches for the crest.

Sunday will be cold behind the front with some snow showers. Snow showers will be most numerous in Mono County closest to the low and where northeast upslope flow traditionally does best. Temperatures will struggle to reach 40 in the lower valleys and 30 in the Sierra. A brisk northeast 10-20 mph wind will make it feel even colder, especially after the recent warm weather. Fuentes

Wind and Temps

* Changes: Pretty much an across the board increase in wind gust speeds Saturday through Sunday based on latest guidance, enough to warrant wind advisories for many areas.

* Flow aloft ahead of incoming front starts to increase late today leading to gusty W/SW winds this afternoon, but not enough for significant impacts. That waits until Saturday when stronger flow aloft coupled with gradient ahead of the front combine to produce widespread breezy conditions. Guidance suggesting gusts 30-40 kts possible in many areas, with highest risks for the Sierra Front south into Mono County and east into the Hwy 95 corridor. Have issued wind and blowing dust advisories for these areas. We'll see the usual moderate road and air travel impacts along with concerns for rapid fire spread in grassy vegetation in W Nevada and the E Sierra. Also given it's a Saturday and with temps still mild, have also issued lake wind advisories already for Tahoe and Pyramid as a heads up to boaters.

* Behind the cold front Sunday a blustery NE wind will make things feel quite chilly across the region. Guidance even showing sustained winds near 20 kts for Reno and W Nevada cities. Quite a dramatic shift in temperatures, nearly a 30 degree drop. 120 kt NE jet drops into the region late Sunday into early Monday yielding another round of strong NE winds for Sierra crest areas and westward. Gusts over 100 mph are likely but at this point probably not Feb 9th type intense winds. We'll also see rough water on Tahoe especially the west shores, so expect lake wind advisories Sunday. Most of the strong gusty winds subside by late morning Monday as trough/jet scoot out of the area fairly quickly. Chilly morning Monday, and if there is snow on the ground for W Nev cities then low temps could easily be 5+ degrees colder than currently forecast.

Tuesday and Beyond

* No major changes made to the forecast here. High pressure builds in for most of the week leading to quiet weather and warming temperatures. Back to above normal levels by Thursday- Friday.

* Ensemble guidance continues to show decent trough signal off- shore by next Saturday into the following week. Haven't seen that in a while! This should allow for more active weather with gusty winds and increased chances for precip into CA/NV. One possibility we'll have to watch for is the trough digging far enough south that our region might miss much of the wetter storms - this is showing up in atmospheric river landfall tools which show best probabilities more into SoCal, S Nev, and AZ.

-Chris

AVIATION.

* Pretty decent day for flying today with VFR conditions and only late day gusty SW winds. Some light turbulence likely but nothing out of the ordinary.

* Flow aloft increases after 6z/Sat with ridge winds above 40 kts. This will lead to wind shear issues overnight into Saturday morning while valley winds remain comparatively light.

* Widespread strong gusty SW winds materialize Saturday, especially after 18z, with gusts above 30 kts likely for most airports including RNO. High confidence in this. Expect rough air and wind shear issues much of the day, and into the evening especially at MMH. Blowing dust is expected east of RNO impacting airports such as HTH, NFL, LOL, and WMC.

* Cold front brings a band of snow Sat night into Sun morning. We'll have more details on this with the day shift discussion, but for now expect a 2-4 hour period of MVFR-IFR snow at all terminals including RNO. With rapid drop in temperatures, runway accumulations and flash freezes are possible Sat night and Sun morning that could impact operations.

-Chris

FIRE WEATHER.

* Main concern here is Saturday with strong gusty SW winds ahead of the incoming cold front. Precipitation has been severely lacking January-February leading to dry fine fuels in lower elevations of W Nevada and the E Sierra. Given the mild weather Saturday there will probably be a lot of people out on public lands which can lead to accidental starts. So we'd like to get the word out to be extra careful Saturday afternoon and evening when the winds pick up.

* Precipitation and higher humidities should end fire weather risk Sunday into next week. Wetter pattern possible starting around March 9th but not a lock yet.

-Chris

REV Watches/Warnings/Advisories. NV . Blowing Dust Advisory from 10 AM to 10 PM PST Saturday NVZ004.

Lake Wind Advisory from 1 PM to 7 PM PST Saturday for Pyramid Lake in NVZ004.

Wind Advisory from 1 PM Saturday to 1 AM PST Sunday NVZ001.

Lake Wind Advisory from 7 AM to 10 PM PST Saturday for Lake Tahoe in NVZ002.

Wind Advisory from 10 AM to 10 PM PST Saturday NVZ003.

CA . Wind Advisory from 1 PM Saturday to 1 AM PST Sunday CAZ073.

Lake Wind Advisory from 7 AM to 10 PM PST Saturday for Lake Tahoe in CAZ072.



For more information from the National Weather Service visit . http://weather.gov/reno


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. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Lake Tahoe, Lake Tahoe Airport, CA7 mi49 minS 15 G 2510.00 miFair58°F15°F18%1020.9 hPa

Link to 5 minute data for KTVL

Wind History from TVL (wind in knots)
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
12
PM
1
PM
2
PM
Last 24hrN6N6N3NW3S3SW3CalmS3S3S3S3S3S3CalmCalmCalmS3CalmCalmCalmNE3S6SW7
G16
S15
G25
1 day ago34CalmCalmCalmCalmCalmS3S3S3CalmS3CalmS3CalmS4S3S3CalmE3335Calm
2 days agoN5NE5CalmCalmSW3S4S4CalmCalmS3S3CalmS3S4CalmS3S3CalmS3CalmN6N5Calm4

Tide / Current Tables for Sacramento #4, Sacramento River, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Sacramento #4
Click for Map
Fri -- 04:54 AM PST     0.35 feet Low Tide
Fri -- 06:40 AM PST     Sunrise
Fri -- 09:21 AM PST     Moonrise
Fri -- 09:36 AM PST     2.77 feet High Tide
Fri -- 05:55 PM PST     0.45 feet Low Tide
Fri -- 05:57 PM PST     Sunset
Fri -- 10:19 PM PST     2.18 feet High Tide
Fri -- 10:50 PM PST     Moonset
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
1.91.510.70.40.30.61.32.22.72.82.62.31.91.410.70.50.40.71.31.92.22.2

Tide / Current Tables for Sacramento, Sacramento River, California
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS 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 Reno, NV (17,4,5,8)
      (on/off)   Help

Ground Weather Radar Station Reno, NV
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerous 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.