Area Forecast Discussion
Issued by NWS Las Vegas, NV

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000
FXUS65 KVEF 081800
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1100 AM PDT Sat Aug 8 2020

.SYNOPSIS...Warm and dry conditions are expected through the end
of the week with periodic afternoon breezes. Main concern through
the week ahead will be elevated fire risks along with continued
mid-summer heat.

&&

.DISCUSSION...through next Saturday.

A general pattern of weak western troughing with a suppressed
subtropical (monsoon) high will continue to dictate the weather in
the coming days. This will result in mostly dry conditions along
with temperatures hovering a few degrees above normal for the week
ahead. Persistent afternoon breezes will continue to enhance
regional fire danger when combined with the very dry airmass in
place, though currently larger scale wind events resulting in
widespread high fire danger are looking unlikely. Only
precipitation chances to speak of look to remain along the Sierra
crest and northern reaches of our forecast area in response to
steep lapse rates and a diffuse baroclinic zone stretched across
the Great Basin. By in larger however, dry conditions are expected
areawide aside from a few traces of rainfall in the aforementioned
areas with any isolated daylight-driven showers which form.

Looking ahead,  the absent monsoon looks to continue in a vacant
status through at least next weekend, though there may be some
signs of life as we move later into August. Increasing tropical
cyclone activity is expected in the Eastern Pacific Basin later
this week, and extended guidance signals the possibility of a
strengthening monsoon high setting up beyond next weekend. Still
not much to get excited about, but worth watching as a potential
pattern shift attempts to develop.

&&

.AVIATION...For McCarran...Quiet weather expected with light winds
following typical diurnal trends with drifting smoke from southern
California wildfires intermittently interrupting otherwise blue
skies. No operationally significant weather expected.

For the rest of southern Nevada, northwest Arizona and southeast
California...Outside of lingering afternoon breezes in northwest
Arizona and up the Colorado River Valley, light winds following
diurnal trends expected. Smoke from southern California wildfires
will continue to impact mainly southeast California, with periods of
CIGs or VIS reductions possible at KDAG, elevated AOA 10 Kft
elsewhere.

&&

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

$$

DISCUSSION...Outler
AVIATION...Steele

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