Saturday, June12, 2021
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Marine Weather and Tides
Lee Vining, CA

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 5:37AMSunset 8:19PM Saturday June 12, 2021 7:34 AM PDT (14:34 UTC) Moonrise 7:14AMMoonset 10:37PM Illumination 7% Phase: Waxing Crescent; Moon at 2 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 Lee Vining, CA
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location: 37.96, -119.13     debug


Area Discussion for - Reno, NV
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FXUS65 KREV 120953 AFDREV

Area Forecast Discussion National Weather Service Reno NV 253 AM PDT Sat Jun 12 2021

SYNOPSIS.

High pressure over the Four Corners and low pressure off the west coast will bring typical breezes today and some increase in winds Sunday through Tuesday. A few brief thunderstorms are possible in west central Nevada on Sunday while temperatures warm up to above average. Hot conditions will prevail starting Wednesday, along with a chance for afternoon thunderstorms later in the week.

SHORT TERM.

Main change in the short term was shifting the slight chance of thunder for Sunday farther east into a small portion of west central NV Basin & Range, based on the latest guidance trends.

Above average temperatures will return today and be with us for a while as high pressure begins to strengthen over southern New Mexico and west Texas, then become centered near the Four Corners region by Monday. However, due to the presence of a trough off the west coast and southwest flow over the Sierra, we won't yet see the big summer heat, with highs near 90 in lower elevations today then lower-mid 90s Sunday-Monday. Sierra valleys can expect highs in the mid-upper 70s for the next few days.

Winds today will be a lighter version of the typical zephyr with peak gusts near 25 mph. Then for Sunday-Monday as some shortwave energy rotates around the main offshore trough and reaches the west coast, wind gusts will increase to the 30-35 mph range with localized gusts to 40 mph both Sunday and Monday. Forecast humidity values aren't particularly low in most areas, but isolated fire weather concerns are possible. The highest potential for a few hours of critical or near-critical conditions is currently projected for Mineral and southern Mono County on Monday, as afternoon humidity is more likely to dip below 10%.

As for thunder chances, they look remote for the next few days. Some afternoon cumulus buildups are likely today and Sunday, and a weak upper disturbance combined with increased surface convergence could produce a few short-lived cells in parts of west central NV late Sunday afternoon-evening. The most likely position of the trough and the increased dry southwest flow over the Sierra has changed a bit from the previous forecast, making thunderstorm development less likely across the Lassen/northern Washoe convergence zone, and from the eastern Sierra slopes eastward across Douglas and Lyon counties. MJD

LONG TERM. Tuesday through Next Week .

Heat will be the main story in the extended forecast as a Four- Corners ridge intensifies by the middle of next week. Highs in the 90s will be widespread across western Nevada valleys by Tuesday before before ramping up on Wednesday with hotter valleys nearing the 100 degree mark. The hottest days of the week look to be Thursday and Friday when record temperatures will be possible. Western Nevada valleys will heat up to around 100 degrees with basin and range valleys such as Lovelock and Fallon closer to the 102-105 mark. Sierra valleys will also be near record values with highs near 90 degrees.

Overall we expect heat health impacts to ramp up starting Wednesday especially for those outdoors for extended periods and populations without access to air conditioning. Overnight lows will remain mild and in the 60s with a few areas only cooling to around 70 degrees around the Walker Lake, Hawthorne, and Mina areas.

Along with the heat comes increased instability and a threat for showers and thunderstorms. Wednesday will likely see more in the way of afternoon cumulus build ups with areas of thunderstorms possible from Thursday into the weekend. While deterministic model runs show variability with moisture transport into the region, ensemble spreads yield better confidence in seeing increasing PWATs which should allow for storm formation across the Sierra. Fuentes

AVIATION.

Temperatures will continue to rise over the next few days, with typical afternoon and evening zephyr breezes mainly between 21-04Z. Peak gusts today around 20 kts, then increase to 25-30 kt Sunday-Tuesday for the main terminals along US-395. Mountain wave turbulence will likely be modest today, then become more notable starting Sunday.

VFR conditions will prevail with some afternoon cumulus buildups today and Sunday. A 10-15% chance of a late day thunderstorm is possible Sunday for a few locations in west central NV including the KNFL area. MJD

REV Watches/Warnings/Advisories. NV . None. CA . None.



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
Mammoth Yosemite Airport, CA28 mi54 minN 310.00 miFair45°F28°F53%1023 hPa

Link to 5 minute data for KMMH

Wind History from MMH (wind in knots)
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Last 24hrSE3E6SE3SE7SE8E9
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CalmCalmSE5--SE7SE7SE7E5W6W9--NE3CalmN4CalmN3CalmN3N4Calm
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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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