Marine Weather and Tides
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.
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 7:06AM||Sunset 4:34PM||Thursday December 12, 2019 2:18 PM PST (22:18 UTC)||Moonrise 6:15PM||Moonset 8:29AM||Illumination 99%|
7 Day Forecast for Marine Location Near Yerington, NVHourly EDIT Help
Area Discussion for - Reno, NV  (on/off)  Help NOTE: mouseover dotted underlined text for definition
FXUS65 KREV 122150 AFDREV
Area Forecast Discussion National Weather Service Reno NV 150 PM PST Thu Dec 12 2019
SYNOPSIS. Breezy winds will continue into Friday along with some light Sierra showers. A stronger system will arrive by Friday afternoon with continued gusty winds, but with more rain and snow into Saturday morning. Snow levels will gradually decrease with significant travel impacts likely in the Sierra. A colder, but weaker, storm for Saturday may bring light snow to all elevations. A break in the wet pattern is anticipated for early next week.
SHORT TERM. We have continued to make a few adjustments to the forecast. The first is to increase winds for the next 24 hours for the Sierra and adjacent lee side valleys. The other is to indicate a better chance of snowfall in western Nevada Saturday night.
For the next 18 hours, occasional upslope showers will continue in the Sierra from highway 50 north with light amounts. Ridge winds will continue to gust to 75+ mph with some gusts in the lee side to 40 mph at times, especially this evening.
The next wave still looks on track to arrive mid to late morning Friday in the Sierra from the Tahoe Basin northward. The heaviest precip still looks to occur in the afternoon to evening time fame. Spillover will be somewhat limited with the best chance in the evening. Central Nevada will have a better chance of precip as the front reforms in this area. Amounts still look on track from the morning update. The front weakens as it slides south into Mono County Friday night with most precip near the crest and very limited east of 395.
A break for Saturday with another, colder system for Saturday night. This one is smaller and weaker so who gets the heaviest snow is yet to be determined. This system will have decent forcing as it moves through for a quick burst even into the valleys. While we have yet to determine who will get the heaviest amounts, there is high confidence it will occur north of Highway 50. X
. LONG TERM . Sunday through next weekend .
Snow showers may continue during the day on Sunday, especially in west central Nevada, as the backside of the trough moves through the region. Much cooler temperatures are expected Sunday through Tuesday with daytime highs about 5-7 degrees below normal.
By Wednesday another low pressure, mostly cut-off from the upper level flow, will likely begin to bring precipitation back to the region into Thursday morning. Overall precipitation from this system is expected to be modest by Sierra standards, but could still cause some travel disruptions over the passes.
Regarding the 19-22nd moisture influx- while confidence in an another round of incoming moisture along the California coast during this time period continues to increase, so does the uncertainty with impacts in the Sierra and western Nevada. The main reason is that the moisture transport could be from a more southerly direction which would significantly limit the orographic lifting mechanisms. We've seen this before, where large amounts of AR moisture move into California with limited impacts east of the Sierra crest and especially western Nevada. Important point -> High confidence in precipitation DOES NOT necessarily mean large amounts of precipitation.
Ensemble EC & GFS precipitation accumulation, are showing some of the widest spread we've seen. Where some ensemble members show significant precipitation and others show little to none. This time frame is still worth watching, especially if you are traveling during this period, but there is still a lot of uncertainty in potential impacts. -Zach
AVIATION. Gusty winds to continue with some LLWS particularly around Lake Tahoe. Ridge winds will gust to 70 kts the next 24 hours. At least until 15Z Friday, most areas will remain VFR with local MVFR CIGS in the Sierra with mtn obscuration.
High confidence in MFR/IFR CIGS in -RA after 18Z Friday for the Sierra from KTVL northward transitioning to -SN after 03Z. Areas of MVFR CIGS in western Nevada, mostly north of I-80. LLWS will continue around the Tahoe Basin, with more localized LLWS for the 395 corridor (KMMH north to KRNO).
After a break Saturday, -SN possible for all elevations including the western Nevada terminals. Chances of at least a dusting for the terminals is 60%, except for KMMH which will be too far south. X
REV Watches/Warnings/Advisories. NV . Winter Weather Advisory from 10 AM Friday to 10 AM PST Saturday above 6500 feet in NVZ002.
CA . Winter Weather Advisory from 10 AM Friday to 10 AM PST Saturday above 6500 feet in CAZ072.
For more information from the National Weather Service visit . http://weather.gov/reno
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports. Follow links for more data.
|Fallon, Naval Air Station, NV||25 mi||2.4 hrs||Var 4||10.00 mi||Mostly Cloudy||60°F||39°F||46%||1019.2 hPa|
Link to 5 minute data for KNFL
Wind History from NFL (wind in knots)
|1 day ago||SE||SE||NE||NE||NE||NE||NE||Calm||SE||Calm||Calm||Calm||Calm||W||Calm||SE||SE||SE||S||E|
|2 days ago||NW||Calm||NE||S||NE||Calm||W||S||S||Calm||Calm||Calm||Calm||W||Calm||Calm||SE |
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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
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