BARO: 928.767578125
 |   This Afternoon - August 22 | Mostly sunny. High near 109, with temperatures falling to around 107 in the afternoon. Southwest wind around 12 mph, with gusts as high as 20 mph. |  |   Tonight - August 22 | Partly cloudy, with a low around 89. Southwest wind 7 to 12 mph, with gusts as high as 20 mph. |  |   Sunday - August 23 | Sunny, with a high near 109. South southwest wind 3 to 13 mph, with gusts as high as 22 mph. |  |   Sunday Night - August 23 | Mostly clear, with a low around 88. Southwest wind 8 to 13 mph, with gusts as high as 21 mph. |  |   Monday - August 24 | Sunny, with a high near 107. South southwest wind 7 to 12 mph, with gusts as high as 22 mph. |  |   Monday Night - August 24 | Mostly clear, with a low around 86. |  |   Tuesday - August 25 | Sunny, with a high near 107. |  |   Tuesday Night - August 25 | Mostly clear, with a low around 88. |  |   Wednesday - August 26 | Sunny, with a high near 109. |  |   Wednesday Night - August 26 | Mostly clear, with a low around 88. |  |   Thursday - August 27 | Sunny, with a high near 109. |  |   Thursday Night - August 27 | Partly cloudy, with a low around 88. |  |   Friday - August 28 | Sunny, with a high near 109. |  |   Friday Night - August 28 | Mostly clear, with a low around 88. |
000
FXUS65 KVEF 222256
AFDVEF
Area Forecast Discussion
National Weather Service Las Vegas NV
356 PM PDT Sat Aug 22 2026
.KEY MESSAGES...
* Above normal temperatures continue through next week.
* Isolated storm chances linger into early next week, with best
chances in northwestern Arizona and the southern Great Basin.
&&
.DISCUSSION...through Friday.
Hotter than normal temperatures will continue through the forecast
period as a broad ridge of high pressure remains positioned over the
area. High temperatures will top out around 2 to 7 degrees above
normal each afternoon, with day to day variations depending on the
position of the ridge, cloud cover, moisture, etc. Overnight low
temperatures will run around 3 to 8 degrees warmer than normal,
providing little-to-no overnight relief in the lower elevations of
the Mojave Desert where temperatures will bottom out in the mid-80s
to mid-90s. Given the long duration of this anomalous heat, we will
see widespread Major-to-Extreme (Levels 3 and 4 of 4, respectively)
HeatRisk return during the second half of the week.
Southwesterly flow aloft will continue to dry things out, with
precipitable water slowly decreasing across the region over the
weekend. As a result, storm coverage today and tomorrow will be more
isolated in nature, and will be limited to the higher terrain of the
Southern Great Basin, Eastern Sierra, and the Arizona Strip where
there is a 10 to 30% chance of precipitation this afternoon.
Localized moderate-to-heavy rain, lightning, and erratic outflow
winds will be the primary threats with any storms that develop.
Ensemble guidance continues to show a relative uptick in moisture
across northwestern Arizona on Monday. Currently, this slight
increase in moisture is reflected in the scattered 15 to 30% rain
chances in Mohave County on Monday afternoon. Drying will resume on
Tuesday, continuing through the end of the week as we find ourselves
under southwesterly flow aloft.
&&
.AVIATION...For Harry Reid...For the 00Z Forecast Package...Breezy
south winds will continue through the afternoon at 8-10KT with gusts
over 15KT. Winds will diminish this evening around sunset with
typical overnight wind patterns expected through Sunday morning.
Similar winds to today are expected Sunday with as southeast winds
in the morning become south with gusts to around 20KT in the
afternoon. Isolated showers and thunderstorms will continue into the
evening, remaining well north of the terminals with no local impacts
expected. Precipitation will wane after sunset. Temperatures will
exceed 100F through 04Z this evening, then again Sunday between 18Z
and 04Z.
For the rest of southern Nevada, northwest Arizona and southeast
California...For the 00Z Forecast Package...South to southeast winds
are expected through the rest of afternoon in many locations,
gusting 15-20KT at times. West to southwest winds will push into
KDAG around 00Z and start gusting over 20KT. Winds will diminish
around sunset and follow typical wind patterns overnight. Isolated
showers and thunderstorms will continue across the Southern Great
Basin into the evening as well as in the Sierra, but should remain
away from TAF sites. Any precipitation will diminish this evening
with a dry night expected. Sundays's winds will be similar to
today's. Precipitation is possible in Mohave County on Sunday, but
generally dry conditions are expected.
&&
.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.
&&
$$
DISCUSSION...Stessman
AVIATION...Nickerson
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