FXUS65 KVEF 232053
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
153 PM PDT Sun Aug 23 2026

.KEY MESSAGES...

* Hotter than normal temperatures will continue through the week.

* Chances for isolated showers and thunderstorms will linger through 
  Monday for portions of our forecast area. 

&&

.DISCUSSION...through Saturday.

Persistent ridging across the Desert Southwest will keep 
temperatures above normal through the week. Monday will be the 
"coolest" day of the week, with afternoon high temperatures topping 
out around 2 top 5 degrees above normal. Temperatures across the
region will increase on Tuesday and Wednesday as we dry out. 
Across the Mojave Desert, temperatures will be around 4 to 7 
degrees above normal through the second half of the week, with 
temperatures around 2 to 4 degrees above normal across the 
southern Great Basin and in the Owens Valley. The long duration of
these anomalous temperatures will result in widespread Major-to- 
Extreme Heat Risk across the Mojave Desert during the latter half 
of the week with widespread Moderate Heat Risk across the southern
Great Basin and Owens Valley.

Current radar and satellite imagery show isolated showers and 
thunderstorms moving southwest to northeast through Mohave County 
and across the southern Great Basin. Storms will continue to develop 
on the higher terrain across northwestern Arizona and the southern 
Great Basin this afternoon, with the potential for isolated 
convection to pop up in the higher terrain of Clark County an the 
Mojave Preserve. Gusty outflow winds, localized downpours, and 
lightning are the main threats with today's storms. Overnight, 
moisture will increase across our southern and eastern zones. This
additional moisture will help to fuel another round of afternoon 
showers and thunderstorms for areas south and east of the I-15 
corridor tomorrow. Beyond Monday, dry southwesterly flow aloft 
will cause moisture to decrease across the region through the end 
of the week.

&&

.AVIATION...For Harry Reid...For the 18Z Forecast Package...Winds 
favor a southeasterly direction this morning with sustained speeds 
of less than 10 knots. A few gusts to around 15 knots cannot be 
ruled out. In the early afternoon, winds will shift to the southwest 
with gusts of around 20 knots. Winds will decrease but maintain a 
southwesterly direction after sunset. Temperatures exceed 100 
degrees until 04Z this evening, then increase to above 100 degrees 
by 18Z tomorrow.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 18Z Forecast Package...Southerly winds with 
gusts between 20 and 25 knots develop this afternoon in the Las 
Vegas Valley, Colorado River Valley, and Owens Valley, weakening 
after sunset. Gusty westerly winds pick up after sunset at KDAG, 
lasting into the early morning hours. Thunderstorms will continue to 
drift through Mohave County this afternoon, and additional storm 
development cannot be ruled out over high terrain in southern Nevada 
as well. Gusty outflow winds may cause sudden wind direction changes 
in the Las Vegas Valley and Colorado River Valley. 

&&

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

&&

$$

DISCUSSION...Stessman
AVIATION...Meltzer

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