Tuesday, September28, 2021
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Marine Weather and Tides
Crystal Bay, NV

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:52AMSunset 6:50PM Monday September 27, 2021 9:26 PM PDT (04:26 UTC) Moonrise 9:44PMMoonset 12:23PM Illumination 58% Phase: Waning Gibbous; Moon at 21 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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7 Day Forecast for Marine Location Near Crystal Bay, NV
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location: 39.22, -120     debug


Area Discussion for - Reno, NV
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FXUS65 KREV 272113 AFDREV

Area Forecast Discussion National Weather Service Reno NV 213 PM PDT Mon Sep 27 2021

SYNOPSIS.

A cold front is bringing gusty winds today into Tuesday with heightened fire weather and lake wind concerns. Light precipitation is possible tonight, mainly in northeast California and near the Sierra. Much cooler temperatures arrive Tuesday and Wednesday with a gradual warming trend late week.

DISCUSSION.

Gusty winds and widespread fire weather conditions will continue to impact the region this evening. These impacts are the result of a cold front expected to push across northern CA and western NV late this evening into the early morning hours. Jet stream winds will dip south and southeast across the Sierra and could result in some gusts this evening exceeding 70 mph along the Sierra crest and ridges of the Carson Range. Decent mixing along the frontal boundary and delayed onset of strong overnight inversions will enable the continuance of gusty conditions well into the late evening hours.

Many areas will see southwest wind gusts up to 30-40 mph this evening as the incoming cold front advances further into the Sierra and basin areas of western NV. These gusty winds will also impact recreational activities over Lake Tahoe and Pyramid lake this evening. Gusty post-frontal winds will continue to impact Pyramid Lake tomorrow afternoon and evening so a Lake Wind Advisory will continue to be in effect in that area as well. Some eastern areas that include Pershing and Churchill could see wind gusts reaching 40 mph that could cause blowing dust downwind of area dry lake beds and sinks. The resulting impact will be brief periods of reduced visibility could make traveling on area roads and highways a challenge so extra care is advised. Winds will shift to the north- northwest behind the front with critical fire weather conditions continuing into Tuesday morning across southern Mono County. See fire weather and aviation discussion for more details on specific impacts.

Light precipitation is possible overnight tonight from around Reno/Tahoe northward. A few areas near the Oregon border and along the northern Sierra crest have a good chance of receiving a wetting rain with potential up to around 0.3-0.4" especially higher elevation areas above 5000’ in western Plumas County, northern Lassen County, and far northwest Washoe County close to the Oregon border. Light snow shower chances are also possible above 6500’ early morning Tuesday, but accumulations are expect to be less than an inch.

The warmer early-fall temperatures seen this afternoon will drop significantly on Tuesday as cooler air spreads east and southeast behind the outgoing frontal boundary. Daytime high temperatures on Tuesday will be around 10 degrees below normal with low to mid 60s for most lower valley areas and mostly 50s in Sierra valleys. Much colder temperatures are expected by Tuesday night into Wednesday morning as rapid clearing and formation of strong radiation inversion enhance cooling especially over most Sierra locations.

A stable northerly flow will increase over the region Wednesday into Thursday morning as a positive tilted short-wave ridges builds across the west coast. -Amanda

EXTENDED OUTLOOK through next weekend.

Temperatures will begin to rebound by the weekend as modest high pressure builds back over the region and holds fast into the early part of next week. This will allow regional temperatures to steadily bounce back into the 70s to low 80s for western NV valleys with mountain valleys rising into the 60s to low 70s. Overnight lows will remain on the cooler side as Autumn should be with 30s to low 40s expected across Western NV and 20s for colder mountain valleys. Lighter winds will also prevail with general dry and stable conditions being aided by the southwest flow in place over the region. This will greatly limit the precipitation potential at least region-wide going into next week. -Amanda

AVIATION.

* Gusty winds, mountain wave turbulence, and periods of LLWS will be the main operational impacts today through Tuesday morning. Surface wind gusts of 30-40kts & LLWS are expected across all terminals into the evening.

* The period between 00-06Z has the highest wind gust potential. Wind gusts over Sierra terminals should continue overnight and gradually diminish through the morning. Wind gusts for KRNO- KCXP-KMEV will decouple from the surface after 06Z and decrease to 10kts or less shortly thereafter. LLWS will continue to impact these terminals into the early morning hours tomorrow. A wind shift out of the N-NW is still expected as a cold front sweeps through the N.Sierra and western NV terminals overnight between about 06-09Z with KMMH seeing this wind shift somewhere between 09-12Z.

* Visibility impacts are also possible this evening into Tuesday mainly across KLOL, KNFL, and KHTH as gusty and varying post- frontal winds result in areas of blowing dust downwind of dry lake beds and sinks. Areas (KMEV-KMMH) immediately downwind of the California wildfires could also see periods of MVFR CIGS/VIS conditions due to smoke transport. -Amanda

FIRE WEATHER.

Main change to the forecast is a slightly faster timing with the cold front tonight. This means winds may turn northerly and weaken with humidity rising faster than previously anticipated, but only by a few hours. The current Red Flag Warnings will be left intact, but note that the critical conditions may be over for areas near/north of I-80 sooner than the 5 am end time.

Winds are on the increase this afternoon ahead of a cold front which will shift through the region tonight into early Tuesday morning. Peak wind speeds for most of the area will occur from approximately 3 pm this afternoon through 3 am tonight, though speeds will be more likely to peak this evening through daybreak along the southern Sierra front and for the Eastern Sierra. Still seeing potential for downslope enhancement as ridge level winds max out overnight. This means that the strongest winds for wind prone locations, midslopes, and ridges may not occur until near/after sunset.

There will be a secondary wind max for the Chalfant Valley and the southern portion of fire zone 429 (Mineral County) Tuesday afternoon into the early evening as post-frontal northerly winds increase and these regions effectively funnel north winds. Winds to turn NE-E overnight into Wednesday, but will be light, outside of the Sierra crest onto western Sierra slopes where gusts may reach 20-25 mph.

There will be some rain and high elevation (6500'+) snow showers with the cold front tonight, but amounts still look rather meager. Best bet for wetting rains will be the northern Sierra into northeast California and far northern Washoe County near the Oregon border. Light showers are possible as far south as US-50 in the Sierra and I-80 in western Nevada.

After a significant cooldown Tuesday-Wednesday, temperatures return to near normal with a seasonably dry air mass remaining in place. There are no storms and/or wind events on the horizon. -Dawn

REV Watches/Warnings/Advisories. NV . Lake Wind Advisory until 8 PM PDT this evening for Pyramid Lake in NVZ004.

Lake Wind Advisory from 8 AM to 8 PM PDT Tuesday for Pyramid Lake in NVZ004.

Red Flag Warning until 5 AM PDT Tuesday NVZ420-421.

Red Flag Warning until 11 PM PDT this evening NVZ423-429-458.

Lake Wind Advisory until 5 AM PDT Tuesday for Lake Tahoe in NVZ002.

CA . Red Flag Warning until 11 PM PDT this evening CAZ270-271-278.

Lake Wind Advisory until 5 AM PDT Tuesday for Lake Tahoe in CAZ072.

Red Flag Warning until 8 PM PDT Tuesday CAZ274.

Red Flag Warning until 5 AM PDT Tuesday CAZ272.



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


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Truckee-Tahoe, CA10 mi48 minS 12 G 1810.00 miFair54°F28°F38%1018.3 hPa
Carson City Airport, NV14 mi31 minWSW 8 G 2110.00 miFair64°F19°F18%1015.6 hPa
South Lake Tahoe, Lake Tahoe Airport, CA21 mi33 minS 1110.00 miLight Rain51°F33°F50%1014.8 hPa
Reno, Reno Tahoe International Airport, NV23 mi31 minVar 610.00 miMostly Cloudy64°F26°F24%1010.6 hPa

Link to 5 minute data for KTRK

Wind History from TRK (wind in knots)
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Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
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Tue -- 06:59 AM PDT     Sunrise
Tue -- 09:15 AM PDT     0.23 feet Low Tide
Tue -- 02:22 PM PDT     Moonset
Tue -- 02:37 PM PDT     2.04 feet High Tide
Tue -- 06:52 PM PDT     Sunset
Tue -- 06:58 PM PDT     Last Quarter
Tue -- 08:09 PM PDT     0.97 feet Low Tide
Tue -- 11:39 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.52.21.91.410.70.50.30.20.30.71.21.6221.91.61.31.111.11.62.3

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
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Tue -- 06:59 AM PDT     Sunrise
Tue -- 07:45 AM PDT     0.23 feet Low Tide
Tue -- 01:28 PM PDT     2.04 feet High Tide
Tue -- 02:22 PM PDT     Moonset
Tue -- 06:39 PM PDT     0.97 feet Low Tide
Tue -- 06:52 PM PDT     Sunset
Tue -- 06:58 PM PDT     Last Quarter
Tue -- 10:58 PM PDT     2.66 feet High Tide
Tue -- 11:39 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.52.21.71.30.90.60.40.30.20.40.91.31.7221.81.51.2111.31.92.42.7

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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