Winchester, Nevada 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

144
FXUS65 KVEF 200636
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1136 PM PDT Wed Aug 19 2026

.KEY MESSAGES...

* Warm temperatures continue with above- normal afternoon highs
  and near-record warmth for the morning lows.

* Thunderstorm chances return to the forecast starting Thursday as
  monsoon moisture increases, with the highest confidence and most
  widespread storm coverage on Friday.


&&

.DISCUSSION...Through Tuesday

Overnight lows look to be very similar to the previous night with
only a few degrees warmer for a few sites, continuing the pattern
of near record-breaking warm mornings. This warm morning will lead
into another warm afternoon with temperatures very comparable to
Wednesday afternoon, with most sites seeing only a degree plus or
minus from the previous day`s high. These highs will mostly be
around 5 degrees above average, and lead to Moderate to Major
HeatRisk in most desert valleys and the Extreme Heat Warning
remains in effect through Friday. Slight relief is for Friday as
afternoon highs fall by a few degrees, but Saturday shows a slight
rebound. Slight cooling is expected again Sunday, but from there
highs and lows look to plateau into the next work week with
fairly consistent heat expected.

Thunderstorms return to the forecast late Thursday morning as
moisture advects across most of Arizona and into portions of of
Nevada and SE California. The best chances for storms will be
focused over Mohave Co offering locally heavy rain and strong
gusts as well as flooding and lightning. Slight chances for
storms will be possible over over the favored ridge tops for the
rest of the CWA, but look to only lead to a few isolated cells.
Additional chances are expected for Friday but continue the focus
over Mohave Co, with even less chances for the rest of the CWA.
Chances over the weekend look to fall off, but don`t completely
erode. Non-zero chances for storms return for Saturday with
slightly better chances expected for Sunday. Slight chances will
be possible each afternoon into the next work week, but the
current forecast doesn`t show much in the way of widespread
convection then.






&&

.AVIATION...For Harry Reid...For the 06Z Forecast Package...
Gusts have reduced and look to remain around 9kts and southwest
through the night before weakening and becoming light and
variable. Breezy southeast winds arrive in the mid morning and
stay through the mid afternoon. Southwest winds arrive in the mid
afternoon with gusts around 22kts expected. These gusts cut off by
02z, and stay southwest through the night. Temperatures look to
break 100 degrees by 18z, peak around 23z, and cool below 100
shortly before 05z. Winds look to become light and variable again
into late Thursday night. Expect mostly clear skies through the
TAF period with cloud bases staying above 20k feet AGL.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Winds are reducing and
look to stay light through the night and much of the morning. Gustier
winds arrive in the afternoon with peak gusts above 20kts but
below 30ks across the area. Gust at KDAG arrive slightly later in
the early evening and look to last into the late night while the
rest of the TAF sites see gusts cut off and winds lighten. Expect
mostly clear skies through the TAF period with cloud bases staying
above 20k feet AGL.


&&

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

&&

$$

DISCUSSION/AVIATION...Murdock


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