596
FXUS65 KVEF 101111
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
411 AM PDT Tue Jun 10 2025

.SYNOPSIS...Dangerous heat peaks in intensity today as HeatRisk
rises to the major category across parts of the Mojave Desert.
Isolated thunderstorms will develop again in the afternoon over
the southern Great Basin and northwestern Arizona. Dry, breezy,
and slightly cooler conditions are expected Wednesday onward.

&&

.SHORT TERM...through Wednesday.

Much like Monday, low grade high-based thunderstorm activity will
remain possible today across the southern Great Basin, although
coverage today looks a little reduced compared to the past few
days. Gusty outflow winds, brief rain, and a few lightning strikes
will be the main concerns with activity tending to favor Lincoln
County. Otherwise, dry conditions are expected across the rest of
the region with hot temperatures. The heat looks to peak today
with major heat risk advertised across parts of the Mojave Desert
including Las Vegas, Lake Mead, Death Valley, and Barstow. An
increasing southwesterly flow aloft will begin to sweep in
tomorrow with a very modest degree or two of cooling expected
along with breezy southwesterly winds in the afternoon.


.LONG TERM...Thursday through Monday.

Models are in good agreement that our area will be in between ridging
centered over AZ/NM/MX and some flavor of troughing along the
West Coast/Pacific NW, resulting in prolonged southwest flow aloft
during this period. This will lead to dry weather, temperatures
several degrees above normal for mid June, and breezy afternoons.
At this time, winds look likely to remain below advisory criteria,
and HeatRisk is primarily Moderate with only splotches of Major
showing up Sunday and Monday. With all this said, the primary
concern through the period will likely be heat-related impacts to
vulnerable populations, such as those without air conditioning or
who have to remain outside for long periods.

&&

.AVIATION...For Harry Reid...For the 12Z Forecast Package...Light
winds will continue through mid-morning before settling into an
easterly direction before 18Z.  A brief period of southeast winds is
included in the TAF from around 20Z to 23Z before turning south to
southwest.  However, confidence is low for this period of southeast
winds, as not all guidance indicates this, and winds may shift
directly from the east to the southwest.  Regardless of the above,
winds will become south to southwest by 00Z, and gusts to 23 knots
can be expected through the evening.  The gustiness is expected to
subside overnight but will return by mid-morning tomorrow.  Isolated
convection is still possible over the southern Great Basin today,
but coverage will be less than what was seen yesterday, and the
chance of an outflow reaching the valley this afternoon is minimal.
VFR conditions are expected throughout the TAF period, and
temperatures are once again expected to exceed 100F from 19Z through
04Z, with a maximum temperature of 108F expected around 00Z.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package...Conditions at the Las
Vegas area TAF sites will be similar to those described above for
Harry Reid.  Isolated areas of convection are possible once again
across the southern Great Basin and over the northern White
Mountains this afternoon, although the impacts will be less when
compared to yesterday.  A period of westerly winds off the Sierra is
expected at KBIH late in the afternoon and early evening.  Winds at
the other TAF sites will follow typical diurnal patterns.  VFR
conditions are expected at all area terminals through Wednesday.
However, CIGs around 8kft AGL and reduced visibilities due to heavy
rain will be possible near areas of convection.

&&

.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           TUE, JUN 10   WED, JUN 11
              Record(Yr)    Record(Yr)

Las Vegas     109(2022)*    109(2022)*
Bishop        103(2022)*    104(2022)
Needles       121(1910)     122(1918)
Daggett       110(1994)*    110(2022)
Kingman       109(1921)     107(1918)
Desert Rock   104(2022)*    105(2022)
Death Valley  125(2013)     122(2022)

&&

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

&&

$$

SHORT TERM...Outler
LONG TERM...Morgan
AVIATION...Planz
CLIMATE...Soulat

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