127
FXUS65 KVEF 070808
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
108 AM PDT Mon Sep 7 2026

.KEY MESSAGES...

*  Drier conditions expected much of the week with warming
   temperatures expected.

*  Elevated south-southwesterly wind gusts expected on Thursday and
   Friday across the region.

&&


.DISCUSSION...Today through Sunday.

Dry conditions are expected through much of the week as the current
upper level trough lifts out and high pressure sets up over the
region. This area of high pressure will center overhead, which is
too far west for monsoonal moisture to return to the region, which
will limit thunderstorm chances this week. Isolated showers and
thunderstorms are possible on the Sierra crest Wednesday and
Thursday afternoon as upslope flow squeezes out what little moisture
may be in the atmosphere, but little is expected to make it over the
ridge. With building heights aloft, temperatures will quickly warm,
climbing back to above-normal levels by Wednesday. The heat will
peak Thursday or Friday as HeatRisk reaches Major in desert valleys.
After Thursday, temperatures should begin to moderate, falling
closer to normal levels for the weekend, with HeatRisk dropping to
Moderate or Minor in many locations.

An upper level trough is currently expected to push through the
Pacific Northwest toward the end of the week. This is currently
expected to remain too far north to produce precipitation in the
local area. As the trough knocks down the established ridge over
over the region, the pressure gradient should increase and will
result in gusty south to southwest winds. Currently the only area
with over a 50% chance for potentially damaging winds is in the
Western Mojave Desert with gusts up to 40 MPH. The other area of
concern will be the Colorado River Valley where southerly gusts and
building waves could impact boaters. With this being a late-week
system, changes to the forecast are likely, so check back if
planning to spend time outdoors.
&&


.AVIATION...For Harry Reid...For the 06Z Forecast Package...Winds
early in the forecast period tonight will vary between 150-190
true, with speeds around 8KT before becoming light and variable.
Thereafter, winds will follow typical daily directional patterns,
shifting to the east-northeast by mid-morning, then veering to the
southwest during the afternoon with gusts to 20-25KT expected
through around sunset. VFR conditions prevail with no
operationally significant cloud cover.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Lingering light rain
showers mainly south of I-15 will continue dissipating tonight,
with no impacts anticipated. Ceilings gradually improve overnight,
with winds expected to generally follow typical daily directional
patterns the next 24 hours. Southwesterly winds will gust to
around 20-25KT across the Las Vegas Valley Monday afternoon, with
similar westerly gusts across the western Mojave Desert/KDAG
Monday afternoon through late evening. Elsewhere, winds are
expected to remain around 10KT or less. VFR conditions will
prevail through the forecast period.
&&


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

&&

$$

DISCUSSION...Nickerson
AVIATION...Phillipson

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