446
FXUS65 KVEF 051132
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
432 AM PDT Wed Aug 5 2026

.KEY MESSAGES...

* Dangerous heat will remain the primary weather concern through
  Saturday, with widespread Moderate to Major Heat Risk expected.

* Monsoon moisture will slowly begin to return late in the week,
  with isolated thunderstorms first returning to northwest Arizona
  before spreading into southern Nevada over the weekend.

&&

.DISCUSSION...

A high-pressure ridge centered over eastern Arizona this morning
will shift north and west over the next 24 hours, becoming
centered over southwest Utah and eastern Nevada. This will allow
temperatures to remain well above normal, with widespread Major to
localized Extreme HeatRisk into the weekend. The position of the
ridge will also allow for a modest increase in monsoonal moisture
by the weekend, with increasing humidity adding to the oppressive
heat and keeping overnight temperatures elevated. The existing
Extreme Heat Warnings and Heat Advisories look good and remain in
effect through Saturday. During the second half of the weekend and
into early next week, heights are expected to begin falling as
additional moisture moves into the area, allowing daytime high
temperatures to ease by a few degrees.

As mentioned above, a modest increase in moisture is expected late
in the week and over the weekend as the high-pressure ridge builds
into western Utah and eastern Nevada and southeast flow beneath
the ridge advects deeper moisture into the region. This will
increase thunderstorm potential Friday across Mohave County,
spreading westward into the Mojave Desert and southern Great Basin
over the weekend. Rainfall will initially be limited, but as
moisture levels increase by early next week (PWATs increase to
1.25 inches in Las Vegas and 1.5 inches in Lake Havasu City by
Monday), the potential for localized heavy rainfall will increase.

&&

.AVIATION...For Harry Reid...For the 12Z Forecast Package...Wind
patterns today will be similar to yesterday, generally southerly
to southwesterly with a brief period of southeasterly winds
around 10-12KT mid-morning into early afternoon. Winds this
afternoon veer to the southwest with gusts to 20-25KT expected
through sunset when winds diminish. VFR conditions with clear
skies will prevail. Temperatures today will exceed 100 degrees
between 18Z-05Z, with a high of 112 degrees.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package...Similar to previous
days, winds around 5-10KT this morning will shift to the
southwest by late morning into early afternoon, with gusts to
around 20-25KT across most of the region through sunset.
Exceptions include across the western Mojave Desert, where
westerly winds become light and variable later this morning before
returning to the west this evening, and in the northern Owens
Valley where a period of up-valley winds is expected this
afternoon ahead of a westerly push this evening. Gusty up-valley
winds along the Lower Colorado River Valley from KIFP to KEED will
return mid-morning through early evening, with a brief lull
before redeveloping overnight as outflow from thunderstorms pushes
northward. VFR conditions and mostly clear skies will continue.

&&

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

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           WED, AUG 5   THU, AUG 6   FRI, AUG 7   SAT, AUG 8
              Record(Yr)   Record(Yr)   Record(Yr)   Record(Yr)
Las Vegas     113(2024)*   114(2024)*   111(2018)*   114(1978)*
Bishop        105(2024)*   106(2024)*   107(1981)*   107(1981)*
Needles       119(2019)    118(2018)    119(2025)    118(2025)*
Daggett       114(1998)    114(1997)    115(1997)    112(2012)*
Kingman       107(2019)    109(1920)    110(1920)    107(1915)*
Desert Rock   108(2024)*   109(2024)*   111(1981)    109(1978)*
Death Valley  125(1936)    127(2017)    126(1998)*   125(1978)*

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      WED, AUG 5   THU, AUG 6   FRI, AUG 7   SAT, AUG 8
              Record(Yr)   Record(Yr)   Record(Yr)   Record(Yr)
Las Vegas     89(2024)     91(2024)     90(2024)*    88(2025)*
Bishop        68(1971)     69(1979)     71(1983)     68(2024)
Needles       94(2024)     94(2021)     93(1903)     93(2022)
Daggett       83(1998)*    84(1983)*    86(2024)     85(1978)*
Kingman       78(2024)*    79(2019)*    80(1952)*    79(2025)*
Desert Rock   81(2015)     82(1994)     82(2025)*    83(1994)
Death Valley  100(1915)    99(2024)*    99(1947)*    101(1920)*

&&

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

&&

$$

DISCUSSION...Planz
AVIATION...Phillipson

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NWS Las Vegas (VEF) Office