Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 201059 CCA

Area Forecast Discussion
National Weather Service Las Vegas NV
130 AM PDT Wed Jun 20 2018

.SYNOPSIS...Hot and dry conditions are expected through the weekend
with excessive heat likely Thursday through Saturday. Light winds
are expected today but occasional southwest afternoon breezes will
return Thursday through the weekend.


.SHORT TERM...through Saturday night.

Strong ridge of high pressure anchored over the Southwest will keep
conditions dry and hot across the region through Saturday night.
High temperatures today will be noticeably warmer, perhaps
approaching excessive heat levels in some of the lower elevations as
temperatures rise above 110 degrees.  Temperatures will climb
further on Thursday, aided by increasing southwest breezes in the
afternoon enhancing surface mixing.  Afternoon highs in the Las
Vegas metro area will average between 110-113, Death Valley between
120-125, and 115-120 along the Colorado River.   Needless to say,
this is dangerous heat for those unprepared for the conditions or
anyone spending a significant amount of time outdoors.   Stay
hydrated and limit outdoor exposure to stay safe from the extreme
heat. Temperatures will cool very slightly Friday and Saturday but
will remain well above normal and within the territory of
dangerously hot conditions, and an Excessive Heat Warning remains in
effect through Saturday evening.

.LONG TERM...Sunday through Tuesday.

By Sunday, a closed low will move into the central Rockies which
will help nudge the broad high pressure that will be over the
southwest more westward. This will result in a slight drop in
temperatures for the weekend and into early next week, but
temperatures are still expected to be 5 to 10 degrees above seasonal
normals. Besides heat impacts, expect dry conditions with light to
occasionally breezy afternoons under clear or mostly clear skies.


.AVIATION...For McCarran...Light and diurnal winds are expected
today with mostly sunny skies. Temperatures in the afternoon will be
very hot, rising to around 108 degrees during the hottest part of
the day. Very hot conditions are likely each day through Saturday
resulting in periods of high density altitude.

For the rest of southern Nevada, northwest Arizona and southeast
California...Winds will be generally light today with VFR
conditions. Southwest winds will develop on Thursday with gusts of
20 to 30 mph with the locally higher gusts across the western Mojave
Desert in the vicinity of KDAG.

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


LONG TERM....Kryston

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