807
FXUS65 KVEF 230640
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1140 PM PDT Wed Jul 22 2026

.KEY MESSAGES...

* Dangerous temperatures will continue through Monday across the
  Mojave Desert.

* Monsoonal moisture will remain in place over the region, but daily
  storm coverage will decrease as we head into the weekend.

&&

.DISCUSSION...through Wednesday.

High pressure will continue build over the Southwestern US as we
head into the weekend, which will allow for temperatures to continue
to increase each day through the weekend. Temperatures today will be
a few degrees hotter than yesterday, resulting in Major HeatRisk
(Level 3 of 4) popping up in the lower elevations of the Mojave
Desert. By Sunday, temperatures will be around 4 to 8 degrees hotter
than normal for late July. As temperatures continue to rise through
the weekend, we will see widespread Major HeatRisk across the Mojave
Desert, with pockets of Extreme HeatRisk (Level 4 of 4) in the lower
elevations and valleys (e.g., Amargosa Valley, Colorado River
Valley, and Golden Valley). While high temperatures 4 to 8 degrees
aren`t record breaking for this time of year, lingering monsoonal
moisture will make the heat more uncomfortable than normal and
overnight low temperatures around 5 to 10 degrees above normal will
limit overnight recovery; especially in the Las Vegas Valley where
low temperatures will be 90+ degrees. Given the threat posed by this
heat, an Extreme Heat Warning will go into effect for the Mojave
Desert beginning this morning, continuing through Monday evening.

The aforementioned high pressure system will keep monsoonal moisture
in place through the weekend. This will allow for isolated afternoon
convection in the higher terrain around the edges of our forecast
area (northwestern AZ, southern Great Basin, and eastern Sierra),
where there is a 15 to 30% chance of precipitation this afternoon
and evening. Chances for afternoon showers and thunderstorms will
return on Friday, as southeasterly flow aloft brings an increase in
moisture to the area. Convective activity over the weekend should be
sparse, with  isolated flash flooding and gusty outflow winds
continuing to be the primary threats.

&&

.AVIATION...For Harry Reid...For the 06Z Forecast Package...
Overnight southwest winds around 8 knots or less will continue with
a FEW cloud around 15kft. Lighter winds Thursday, but favoring a
northeast to east direction with speeds generally 7 knots or less.
Temperatures will again exceed 100F from 19z-04z with a high of
109F. No thunderstorms expected.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Isolated thunderstorms
will remain over portions of Lincoln County through 07z before
diminishing overnight. Elsewhere, generally clear skies with only a
FEW clouds around 15kft. Winds will remain less than 10 knots
overnight, except for KDAG where westerly gusts to 25 knots will
occur before decreasing to around 10 knots or less after 08z.
Lighter winds Thursday along with isolated thunderstorms over the
southern Great Basin.

&&

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

&&

$$

DISCUSSION...Stessman
AVIATION...Gorelow

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