West Bishop, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

554
FXUS65 KVEF 202021
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1221 PM PST Sat Dec 20 2025

.KEY MESSAGES...

* Gusty winds, light-to-moderate rainfall, and mountain snow
  expected in the higher elevations of the southwestern Great Basin
  through Monday.

* Mid-to-late week, widespread rainfall, isolated instances of flash
  flooding, high-elevation snowfall, and gusty winds will impact
  Christmas travel.

&&

.DISCUSSION...Today through Friday.

Latest high resolution guidance continues to highlight the potential
for strong gusty downslope winds off the eastern Sierra slopes and
into the northern portions of the Owens Valley on Sunday. There is a
50-70% chance of gusts exceeding 40 mph in Bishop, Big Pine, and
across Highway 395, as well as a 60-70% chance of gusts exceeding 58
mph in the eastern Sierra including Aspendell. As a result, hoisted
a Wind Advisory through the day on Sunday for these two zones.
Otherwise, continuing to see the potential for precipitation
isolated to the higher elevations of the southwestern Great Basin.
Sierra spillover will be limited, though Aspendell can expect
between 1 and 3 inches of fresh snowfall, with Mt. Whitney expecting
around 1 foot. Elsewhere, spillover will simply look like increased
cloud cover. Above-normal temperatures continue, with additional
daily records in jeopardy (see CLIMATE section below).

On Tuesday, gusty south winds will pick up in the southern Great
Basin, with gust speeds generally 25 to 35 mph across northern Inyo,
Esmeralda, and central Nye counties. Gusty south winds spread across
the forecast area on Wednesday, with widespread chances of Wind
Advisory-level speeds (40-60%). Gusty winds linger into Christmas
Day before speeds fall off heading into the weekend. Regarding
precipitation, the first push of moisture will move into the region
late-Tuesday, will have subtropical origins (with snow levels
exceeding 9000 feet), and will saturate the atmosphere column.
Forecast PWATs range from 0.80 to 1.10 inches across the forecast
area, which will couple with orographic lift to produce the
potential to drop over an inch of measurable rainfall across area
mountains. Sierra spillover moisture will combine with this
subtropical moisture plume, resulting in the greatest forecast
precipitation amounts existing across Inyo and western San
Bernardino counties Tuesday night through Wednesday. While
confidence is high that the entire forecast area will observe
measurable rainfall, the confidence in exact amounts remains low at
this time, with 5-15% chance of flash flooding across the Mojave
Desert. The second round of moisture impacts the region after
Christmas and will be accompanied by a drop in PWATs to between 0.50
and 0.75" and snow levels dropping to 5000-6000 feet, which will
allow area mountains to receive fresh snowfall.
&&


.AVIATION...For Harry Reid...For the 18Z Forecast Package... Winds
will be light and diurnal through the majority of the TAF period,
with speeds generally below 8 kts. However, early Sunday afternoon,
gusty southwest winds pick up in the Las Vegas Valley with gust
speeds around 25 kts. SCT-BKN aoa 15kft.

For the rest of southern Nevada, northwestern Arizona and
southeastern California...For the 18Z Forecast Package... Winds will
be light and diurnal through the majority of the TAF period, with
speeds generally below 8 kts. The exception continues to be KDAG,
where gusty west winds around 25 kts return this afternoon. At the
end of the TAF period, gusty southwest winds build into the Las
Vegas Valley, with gust speeds around 25 kts. SCT-BKN aoa 15 kft,
though cigs as low as 7 kft possible in the Owens Valley tonight.
&&


.CLIMATE...Numerous climate locations have a forecast high
temperature and/or forecast warm low temperature within 3 degrees of
the daily record through Sunday.

The table below shows the daily record maximum temperature and the
year the record was last set. An asterisk (*) denotes which records
are in jeopardy (within 3 degrees of the forecast).

MAX            SAT, DEC 20  SUN, DEC 21  MON, DEC 22
               Record(Yr)   Record(Yr)   Record(Yr)

Las Vegas      73(1981)     68(2023)*    75(2014)
Bishop         71(1972)     70(2018)*    74(2014)
Needles        76(1981)     75(2005)*    74(2020)*
Daggett        78(1981)*    76(2018)*    78(1955)
Kingman        74(1917)     73(1917)     72(1906)*
Desert Rock    69(2020)     70(2020)*    70(2014)*
Death Valley   79(1999)     81(1999)     82(1914)

The table below shows the daily record warm minimum temperature and
the year the record was last set. An asterisk (*) denotes which
records are in jeopardy (within 3 degrees of the forecast).

WARM MIN       SAT, DEC 20  SUN, DEC 21  MON, DEC 22
               Record(Yr)   Record(Yr)   Record(Yr)

Las Vegas      50(2010)*    53(2023)*    50(2024)*
Bishop         42(1981)     40(2023)*    39(2014)
Needles        61(1901)     58(2010)     60(1904)
Daggett        52(1981)*    53(1981)*    59(1955)
Kingman        51(2010)     51(1904)     46(2005)*
Desert Rock    45(2010)*    44(2010)*    44(1994)*
Death Valley   65(1999)     60(1914)     70(1914)
&&


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

&&

$$

DISCUSSION/AVIATION...Soulat


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