Summerlin South, Nevada 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

389
FXUS65 KVEF 100504
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1004 PM PDT Wed Jul 9 2025

.KEY MESSAGE...

*  Hot and dry conditions will continue through the weekend and into
   early next week as ridging persists across the region.

&&

.DISCUSSION...through early next week.

A shortwave trough moving across the southern Great Basin will
maintain gusty southwesterly winds across southern Nevada this
afternoon.  These winds, combined with very low humidity levels and
dry fuels, are creating critical fire weather conditions across a
large portion of Lincoln County.  A Red Flag warning remains in
effect for this area through 8 PM this evening.  For more
information, see the Fire Weather discussion below.

Temperatures running 5 to 8 degrees above normal continue across the
Lower Colorado River Valley and central and southern Mohave County
this afternoon. Widespread Major (level 3 to 4) HeatRisk continues
in these areas, and an Extreme Heat Warning remains in effect
through 8 PM this evening. After today, temperatures in this area
are expected to gradually decrease as we head into the weekend,
returning to near-normal levels by Saturday.

In response to the shortwave mentioned above moving through the
Great Basin, we will see the ridge axis shift over the western
portion of our forecast area on Thursday and Friday. This will
result in a gradual warming trend across our central and western
zones as we head into the weekend. This high pressure will persist
through the weekend and into next week, allowing for hot and dry
conditions to continue across the region. While the southeastern
portion of our forecast area will see temperatures gradually "cool"
back down to near normal by Saturday, temperatures will rebound as
we head into next week due to the persistent ridging.  HeatRisk
values through the weekend will be Minor to Moderate (levels 1 and 2
out of 4) in most areas. However, a few pockets of Major begin to
appear by Monday across the Mojave Desert and in the Colorado River
Valley.

&&

.AVIATION...For Harry Reid...For the 06Z Forecast Package...The main
concern will be a wind shift to northerly Thursday morning, with
gusts of 15 to 20 knots for a few hours before winds settle down
around noon. Winds should return to the typical nighttime southwest
direction in the evening. VFR conditions will prevail through the
forecast period with only a FEW clouds with bases AOA 15kft AGL
expected. Temperatures will exceed 100F between 17Z and 05Z on
Thursday.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...The main concern will be
a wind shift to northerly which was working its way southward
through the southern Great Basin this evening and will make it
through the northern Mojave Desert Thursday morning before washing
out. Northerly gusts around 20 knots can be expected Thursday
morning in areas prone to northerly winds before the winds settle
down in the late morning to early afternoon. VFR conditions will
prevail through the forecast period.

&&

.FIRE WEATHER...Beginning Thursday, dry conditions will persist, but
wind speeds will be lower, with afternoon speeds ranging from 10 to
15 mph. These lower winds will help mitigate fire weather risk into
the weekend.

&&

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

&&

$$

DISCUSSION...Planz/Stessman
AVIATION...Morgan
FIRE WEATHER...Planz/Morgan

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