299
FNUS75 KVEF 101931
FWSVEF

Spot Forecast for MARZANO...USFS-INF
National Weather Service Las Vegas NV
1231 PM PDT Mon Aug 10 2026

Forecast is based on forecast start time of 1800 PDT on August 10.

If conditions become unrepresentative...or if you have questions
or concerns with this forecast...please contact our office at
(702) 263-9750.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...Temperatures will continue a slow downward trend
the next couple of days, with increasing moisture allowing for
good nocturnal recovery tonight and Tuesday night as RHs rebound
to around 45% tonight and 60% Tuesday night. Min RHs will be around
25% Tuesday and 35% Wednesday, with 20ft winds generally remaining
light and diurnal/terrain-driven. The primary concern for wildfire
ops continues to be thunderstorm potential, with a 30% chance for
thunderstorms Tuesday afternoon and evening, increasing to 60%
Wednesday afternoon and evening. Lightning strikes, erratic gusty
winds, and wetting rains can be expected from any storms that
develop in the vicinity of the fire. Ventilation rates will trend
downward from very good on Tuesday to good Wednesday, and marginal
overnight, lending to concern for near-surface visibility and air
quality reductions due to smoke.

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
Min temperature.....56-59.
Max humidity........43-46 percent.
Winds:
  20 ft winds.......Northwest winds around 5 mph shifting to the
                    northeast overnight.
  10000 ft winds....North around 5 mph.
CWR (>= 0.10).......0 percent.
Mixing height.......2400 ft AGL.
Transport winds.....North 5 to 10 knots.
Ventilation.........Marginal.

.TUESDAY...

Sky/weather.........Partly sunny. Chance of rain showers and slight
                    chance of thunderstorms in the afternoon.
Max temperature.....73-76.
Min humidity........22-25 percent.
Winds:
  20 ft winds.......Southeast winds up to 5 mph shifting to the
                    southwest in the afternoon. Gusty and erratic
                    winds expected near thunderstorms in the
                    afternoon.
  10000 ft winds....South around 5 mph.
CWR (>= 0.10).......0 percent.
Mixing height.......11500 ft AGL.
Transport winds.....South 5 to 10 knots.
Ventilation.........Very good.

.TUESDAY NIGHT...

Sky/weather.........Partly cloudy. Chance of rain showers and
                    slight chance of thunderstorms in the evening.
                    Slight chance of rain showers overnight.
Min temperature.....53-56.
Max humidity........58-61 percent.
Winds:
  20 ft winds.......Northwest winds 5 to 10 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    evening.
  10000 ft winds....Northwest around 5 mph.
CWR (>= 0.10).......0 percent.
Mixing height.......1700 ft AGL.
Transport winds.....Northwest 5 to 10 knots.
Ventilation.........Marginal.

.WEDNESDAY...

Sky/weather.........Mostly sunny then becoming mostly cloudy. Rain
                    showers likely and slight chance of
                    thunderstorms in the afternoon.
Max temperature.....Around 70.
Min humidity........33-36 percent.
Winds:
  20 ft winds.......West winds around 5 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    afternoon.
  10000 ft winds....South around 5 mph.
CWR (>= 0.10).......0 percent.
Mixing height.......9400 ft AGL.
Transport winds.....Southwest 5 to 10 knots.
Ventilation.........Good.

$$
Forecaster...Phillipson
Requested by...GRAYSON BACON
Type of request...WILDFIRE
.TAG 2619282.3/VEF
.DELDT 08/10/26
.FormatterVersion 2.0.0
.EMAIL CAOVCC@FIRENET.GOV,ericstuart73@yahoo.com,WILLIAM.CRETINON@GMAIL.COM