Cema, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

355
FXUS65 KVEF 240839
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1239 AM PST Wed Dec 24 2025

.KEY MESSAGES...

* Widespread rainfall today with isolated flash flooding, snow at
  the high elevations, and gusty winds that will impact Christmas
  travel.

* Heavy mountain snow expected in the Sierra and White Mountains
  amounting to several feet of new accumulation in the highest
  elevations by the end of the week.

&&

.DISCUSSION...through early next week.

Much anticipated storm system is currently making its approach
along the West Coast, with tonight`s satellite imagery depicting
a deep fetch of moisture extending into the subtropics aimed into
the southern California coastal ranges. This moist storm system
will gradually shift east today, with the plume of moderate to
locally heavy rainfall shifting into our western zones by
daybreak, and gradually working east through the afternoon hours.
Additional light showers may develop ahead of this primary
rainband, further priming the environment for measurable rainfall
later in the day. Overall - the general message remains the same
with at least some degree of flood risk for sensitive basins and
broad desert watersheds. The Spring Mountains in particular may
squeeze out several inches of rain from the precipitation band
which could lead to excessive runoff and areas of roadway debris
during the heaviest rainfall rates. Across the Mojave Desert
zones, the general expectation is for between 0.25-0.75 inches of
rain, though the usual fail modes of exaggerated rainshadowing
downwind of terrain features will still exist. Precipitation will
shift east tonight with conditions becoming more showery Thursday
before another impulse spreads additional light rain and mountain
snow through the region on Friday. Thereafter, a trend towards
gradually drying conditions is expected over the weekend.

Very high snow levels will limit the snow totals across most of
the mountain terrain. The exception will be in the Sierra given
their prominence where several feet of snow accumulation is
expected along the crest and significant snow totals are still
anticipated above 7000 feet. Heavy snow of a lesser magnitude is
also expected in the White Mountains. Further east - snow levels
this morning will start near 10k feet in the Spring Mountains,
limiting any hope for fresh snow in all but the very highest
peaks. Snow levels will drop closer to 7000 feet Thursday and
Friday under more showery conditions, and some light accumulations
will be possible then.

&&

.AVIATION...For Harry Reid...For the 06Z Forecast
Package...Deteriorating flight conditions are expected through
the forecast period, with ceilings expected to gradually drop to
2-5kft through the morning. Showers will begin moving into the
area by mid morning, with more widespread rain developing by mid
afternoon and continuing through the evening. Heavier rain showers
could result in visibility to 3SM or less, as well as ceilings to
1kft or less during brief periods, especially during the late
afternoon and evening. A bulk of the rain will move east
overnight, with lingering showers expected through the end of the
forecast period and beyond. Light and variable winds will shift to
the southeast and south during the day Wednesday, increasing to
around 10KT with intermittent gusts to 15-20KT. These winds will
persist into the overnight hours before becoming light.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Deteriorating flight
conditions are expected through the forecast period as showers
and widespread rainfall move across the region. Ceilings will
gradually decrease to 4-6kft, with periods of heavier rainfall
expected to produce ceilings around 1-3kft and visibilities to
2-4SM on at least an intermittent basis, especially during the
afternoon and early evening. Winds will be southerly to
southeasterly for most locations, with speeds around 10-15KT and
intermittent higher gusts possible, with the exception of BIH in
the northern Owens Valley where southeasterly winds will gust to
30-40KT for a majority of the period. Brief visibility reductions
in blowing dust are also expected early in the period at BIH,
until rain showers develop off of the Sierra. Conditions will be
slow to improve, with rain shifting eastward through the evening,
and showers lingering through the end of the period and beyond.

&&

.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.

&&

$$

DISCUSSION...Outler
AVIATION...Phillipson

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