703
FXUS65 KVEF 051720
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1020 AM PDT Fri Jun 5 2026

.KEY MESSAGES...

* Quiet weather and above-normal temperatures continue through the
  end of the work week.

* Expect increasing southwest winds and cooling temperatures this
  weekend and into next week.

&&

.DISCUSSION...Today through Thursday.

Ridging will remain in place through today, bringing another day of
temperatures around 10 degrees above normal. Widespread areas of
Moderate Heat Risk, with pockets of Major Heat Risk in the Las Vegas
Valley, Colorado River Valley, and Death Valley. We will start to
see cooling temperatures beginning Saturday as an area of low
pressure pushes into the Pacific NW, resulting in an elongated
trough along the western US. The main impact from this trough will
be increasing southwest winds with speeds generally 20 to 25 mph
with gusts to around 35 mph, with stronger winds in the higher
terrain. Due to the combination of strong gusty winds, low relative
humidity, and critical fuels, a Fire Weather Watch has been issued
for southern Nevada and northwestern Arizona. Winds will begin to
subside Sunday over southern Nevada, but remain gusty across
portions of northwest Arizona. Temperatures will cool an additional
4 to 7 degrees Sunday putting temperatures close to normal for this
time of year. A second piece of energy is expected to help deepen
the trough Monday and Tuesday helping to once again increasing wind
speeds and keep the ongoing fire weather danger in place.
Temperatures will also continue to cool with highs on Tuesday and
Wednesday potentially a few degrees below normal. Generalized
troughing will persist through the next work week, with a modest
uptick in moisture on Tuesday. That said, negligible chances of
precipitation at this time.

&&

.AVIATION...For Harry Reid...For the 18Z Forecast Package...Light
southeast to south winds are expected to settle into a southwesterly
direction by mid-afternoon. Confidence in the timing of the switch
is low, and it may occur anytime between 19Z and 22Z. Speeds will
increase to 10 to 15 knots with occasional gusts to 23 knots
possible through the evening. There is the potential for a brief
lull in the winds around and shortly after sunset, but winds will
remain breezy through most of the night. Southwest winds will
increase once again by mid-morning Saturday, and gusts to 30 knots
are possible by Saturday afternoon. VFR conditions will persist
through Saturday morning, with FEW high clouds with bases AOA 15kft
AGL overspreading the area by Saturday afternoon. Temperatures will
climb above 100 degrees again this afternoon from 19Z through 03Z,
topping out around 106 degrees. Temperatures are forecast to exceed
100F again on Saturday between 20Z and 01Z.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 18Z Forecast Package...Breezy south to
southwesterly winds will spread across much of the area this
afternoon, with most areas experiencing occasional gusts of 15 to 25
knots through sunset. The usual exception will be across the western
Mojave Desert near KDAG, where light winds are expected through the
afternoon, followed by gusty westerly winds after 22Z. Winds will
diminish in all areas overnight with gusts ending, but gusty
southwest winds of 20 to 30 knots will redevelop in most areas by
Saturday afternoon. VFR conditions will persist through the TAF
period with no operationally significant cloud cover through
tonight, then FEW to SCT high clouds with bases AOA 15kft AGL
overspreading the southern half of the region Saturday morning and
afternoon.

&&

.FIRE WEATHER...Widespread southwest winds between 15 and 25 mph
expected on Saturday, with gusts near 35 mph. Afternoon relative
humidities will range between 5 and 10 percent, with up to 15
percent in the higher elevations of southern Nevada and northwestern
Arizona. Combined with critical fuels, a Fire Weather Watch has been
issued for Arizona Zones 101 and 102 and Nevada Zones 461, 462, 465,
and 466 on Saturday... with the Arizona Zones persisting into
Sunday. Near to critical fire weather conditions will likely persist
into the middle part of next week as this trough pattern remains set
up over the Desert Southwest with a continuation of gusty winds and
low humidity.
&&

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

&&

$$

DISCUSSION/FIRE WEATHER...Gorelow
AVIATION...Planz

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NWS Las Vegas (VEF) Office