Loyalton, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

512
FXUS65 KREV 240930
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
230 AM PDT Thu Apr 24 2025

KEY MESSAGES...

* Warm weather continues today with a slight chance of showers for
  northeast California.

* Light mountain snow and valley rain, thunderstorms, increased
  winds, and cooler weather for Friday into the weekend.

* Warmer and drier weather by early next week with low chance of
  afternoon showers and thunderstorms by mid week.

&&

.DISCUSSION...

High over the region will ensure today remains warm and spring-
like. Daytime highs will top near the upper 50s and 60s for
Sierra valley locations, and mostly 70s for western Nevada
communities. As long as the ongoing warm weather continues,
regional streamflows will run fast and very cold for the time
being. A few light showers are still possible across northeast CA
near the OR border. Mono County into Mineral should also see
cumulus fields maturing into the afternoon as well. Otherwise, a
very nice day indeed. Well, at least until a cooler and wetter
pattern begins early Friday.

An approaching pattern change to more active weather features an
area of low pressure and closed low tracking across central CA into
the Sierra by early Friday. This low pressure system will bring
periods of valley rain showers, high elevation mountain snowfall,
and breezy winds to the Sierra and western region before exiting the
region by Sunday.

* Blended guidance projects on Friday a 10-15% chance for isolated
  thunder Friday across portions of northeast CA and far northwest
  NV, and a 15-20% for isolated thunderstorms from the the Lake
  Tahoe Basin south along the eastern Sierra across Mono-southern
  Lyon-Mineral counties. Look for brief periods of heavy rain,
  localized erratic and gusty surface winds, and dangerous
  lightning. If thunder roars-go indoors!

* Based on current storm timing and trajectory, and multi-model
  ensemble liquid precipitation guidance, liquid amounts are
  trending with better agreement. But liquid amounts are looking a
  little more impressive to say the least. But most areas from
  northeast CA south to the Lake Tahoe Basin could see a 40-60%
  chance for liquid amounts ranging from 0.25 to something just
  short 1.00. Taking into consideration the more southern track of
  the low into the Sierra, the eastern Sierra to include Mono
  County, the White Mountains, and higher elevations east across
  Mineral County will see higher liquid precipitation amounts.

* Blended simulations show snow levels across much of the region
  today starting around 7500- 8500 then dropping to 6500- 7000
  by Friday morning. Eventually, snow levels by Saturday morning
  will fall to around 5000-5500 across western NV, the eastern
  Sierra, to include Mono County.  Although snow levels will drop as
  a cooler air mass filters into the region, longer daytime hours,
  as well as storm timing and trajectory are still limiting factors
  for snow accumulations amounts. This storm systems more southern
  track will favor higher snowfall amounts from the Lake Tahoe basin
  south along the eastern Sierra with higher mountains across Mono
  and Mineral counties seeing higher accumulation totals. Still,
  higher mountain passes (Donner, Echo, and Carson) have at least a
  50-70% chance for 1.0 - 3.0 of accumulating snow. Higher snow
  totals of up to 6 could fall across the Carson Range, Mount Rose
  Summit, Mammoth areas, and the White Mountains through Sunday
  morning.

* Breezy west-southwest winds over the Sierra ridgetops peaking at
  40-50 mph with breezy south-southwest mixing down into western NV
  with gusts to 20-30 mph as well as 35 mph across higher foothill
  areas Fri and Sat. Look for choppy surface conditions across
  larger area lakes especially friday afternoon for Pyramid Lake,
  and periods of moderate mountain wave turbulence and low level
  wind shear for aviation concerns.

Unseasonably cooler temperatures will occur across Sierra valleys
from northeast CA, south to the Lake Tahoe basin, and Mono County
with overnight lows still projected to drop below freezing into the
mid-high 20s for a brief few hours before day break early Saturday,
Sunday, and Monday mornings. If you have already started a garden,
you still have time to take those precautionary steps to protect
your plants.

As the upper low exits into the eastern areas of NV on Sunday, any
drying will still be limited as a slight chance for a few lingering
showers remain across the high Sierra. Blended simulations continue
to project higher pressure building into the region to bring a
robust warming trend. This will be  complemented with drier
conditions as daytime highs rising 5-10 degrees above seasonal
average. Stay tuned for further updates for any changes to forecast
details. This was a worthwhile journey with the National Weather
Service to finalize almost 45 years of government service. Please,
always Support Your Local Meteorologist! Amanda signing off.....

&&

.AVIATION...

* A brief period of patchy FZFG and IFR/LIFR conditions, however, is
  possible around the Martis valley to include KTRK through 15Z
  this morning. A rapid return to VFR will occur afterwards.

* Otherwise, VFR conditions with light west to southwest winds will
  prevail for all main terminals today. Sierra terminals (KSVE-KTRK-
  KTVL) could see wind gusts 10-20 kts during the afternoon and
  early evening hours. Starting overnight Thursday through Saturday,
  look for increasing shower and isolated thunderstorm chances and
  breezy southwest winds.

* Winds aloft across the Sierra at FL100 will increase from the
  south-southwest 20-25 kts between 00-06Z Friday, and further
  intensify to 25-35 kts by 21-03Z Saturday. Look for increasing
  turbulence and LLWS from Friday afternoon through Saturday morning.

- Amanda sends-LAST NO AMD

&&

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

$$