Moapa Valley, Nevada 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

098
FXUS65 KVEF 232221
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
320 PM PDT Tue Jun 23 2026

* Warm temperatures with afternoon highs well above normal will
  continue through Thursday.

* Isolated to scattered showers and storms are expected this
  afternoon through Wednesday, mainly for areas along and southeast
  of the I-15 corridor.

* Dry and windy conditions return Friday and continue into the
  weekend, bringing elevated fire risk and cooler temperatures to
  the region.

.DISCUSSION...through Monday.

Above normal temperatures will continue through Thursday as a ridge
of high pressure remains centered to southeast over southern New
Mexico. Temperatures are expected to be at their warmest this
afternoon, with highs ranging from 95F to 110F in most locations.
Readings will moderate somewhat Wednesday as mid-level moisture and
associated cloud cover moves across the region.  Temperatures will
hold steady on Thursday before cooling resumes Friday and continues
into the weekend as the next system moves into the region. By
Sunday, temperatures are expected to be 5 to 10 degrees below
seasonal normals.

The aforementioned influx of moisture, along with a weak shortwave
approaching from the southwest, will allow for the development of
isolated to scattered convection this afternoon across the southern
Mojave Desert. This activity is then expected to lift northeast
overnight into the Las Vegas Valley.  Low levels are very dry and,
initially, little if any precipitation is expected to reach the
ground. DCAPE values of 1200 to 1400 J/kg indicate that gusty
outflow winds, along with dry lightning strikes, will be the main
concerns. As the system lifts north overnight, low levels will
moisten somewhat, but most areas are not expected to see measurable
rainfall.  The best chance of measurable rainfall will be over the
higher elevations of southern Nevada, but even there, most areas
will see less than 0.10 inch.  The moisture will be pushed east by
Thursday, though low PoPs (around 10%) will remain possible in
eastern Mohave County.

Dry weather returns on Friday and continues through the weekend as a
potent trough (for this time of year) pushes into the western US.
While temperatures and moisture decrease, southwest winds will
increase. Widespread wind gusts of 25 to 45 mph are likely,
particularly on Friday and Saturday. Expect the typical wind
impacts, including hazardous crosswinds and boating conditions,
along with enhanced fire danger. Fuels are primed, and afternoon RH
values are forecast to be 5 to 15 percent. Existing fires and any
new starts from midweek convection will be difficult to contain. See
the Fire Weather discussion below for more information.

&&

.AVIATION...For Harry Reid...For the 00Z Forecast
Package...Southerly winds with afternoon and evening gusts to around
20 knots will persist through around sunset before easing the
remainder of the night. A band of mid-level moisture will bring
increasing showers to the terminal vicinity from 6z onward, with the
best chances for light rain at the airfield occuring through the
morning hours Wednesday, with SCT-BKN ceilings down to 8-10kft AGL.
A 10-20% chance exists for some lightning activity as well. Locally
gusty winds may accompany the stronger showers, with brief gusts
exceeding 25 knots possible. Clouds will gradually scatter out
Wednesday afternoon and evening with southerly breezes expected in
the afternoon.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 00Z Forecast Package...A band of mid-level
moisture will bring increasing virga/light shower activity and
isolated thunderstorms to the region this evening lasting into
Wednesday morning. Best chances for shower activity will be across
the Mojave Desert region with dry conditions persisting across the
Sierra and near KBIH. Otherwise, light showers with locally gusty
winds and sporadic lightning strikes will be possible through
Wednesday morning as the regional TAF sites with CIGS in the 8-12kft
AGL range. Improving conditions are expected Wednesday afternoon
with clouds scattering out and dry conditions resuming.

&&

.FIRE WEATHER...A Red Flag Warning has been issued for this evening
and overnight for portions of the Mojave Desert, including the
Mojave Preserve.  Isolated convection across the area will produce
little, if any, measurable rainfall, but dry lightning strikes could
result in a few fire starts. In addition, a Fire Weather Watch has
been issued for much of the area for Friday and Saturday.  An
approaching late-season trough of low pressure will increase
southerly winds to 20 to 30 mph, with gusts to 40 mph.  This,
combined with minimum RH values of 10 to 15 percent in many areas,
will increase fire danger across the region.

&&

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

&&

$$

DISCUSSION...Planz
AVIATION...Outler
FIRE WEATHER...Planz

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