212
FXUS65 KVEF 190752
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1252 AM PDT Wed Mar 19 2025

.SYNOPSIS...Breezy north winds will persist one more day along
the Colorado River Valley. Otherwise, light winds with a gradual
warming trend are expected through the weekend. A large high
pressure ridge will build in early next week allowing temperatures
to climb well above normal.

&&

.SHORT TERM...through Thursday.

Shortwave ridge will build in across the area with generally light
winds and moderating temperatures expected. Building high pressure
in the Great Basin will keep north-south pressure gradients
elevated and allow for north winds to persist down the Colorado
River Valley today, though they will be weaker than yesterday. A
weak shortwave will lift into the PacNW and brush the northern
Great Basin on Thursday, with some increased cloud cover moving
into our northern zones this afternoon ahead of the wave and into
Thursday, along with increased ridgeline breezes in the Sierra and
southern Great Basin, but otherwise little impact is expected.

.LONG TERM...Friday through Wednesday.

The main point of interest in the long term is rising temperatures.
Models are in good agreement that an upper level ridge will move
from the eastern Pacific Ocean into the West Coast Friday and
Saturday, amplifying Sunday and early next week. Surface
temperatures should reach near average temperatures for this time of
year by Friday, increasing to 10 degrees above normal by Monday.
Temperatures increase further through the middle of next week as
heights aloft rise. Level 1 (Minor) HeatRisk spreads across the
desert valleys with an area of Level 2 (Moderate) in Death Valley.
This level of heat affects those sensitive to heat, especially those
without access to adequate cooling or hydration. The latest NBM
gives Las Vegas a 50 percent probability of reaching 90 degrees next
Wednesday. Flow around the ridge will maintain dry conditions and
light winds aside from breezy northerly winds along the Colorado
River early next week.

&&

.AVIATION...For Harry Reid...For the 12Z Forecast Package...Northeast
breezes continue through the morning hours. Around a 30-50% chance
of speeds reaching 10 knots through 19z. As the afternoon rolls around,
winds weaken to about 5 knots out of the east. Light southwesterly
drainage winds return after sunset and persist through the night.
Skies begin clear but SCT to BKN clouds above 15kft move in this
evening.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package...Sites in the Las Vegas
Valley are forecast to see northeast winds today, approaching 10
knots at times. A return to typical, drainage winds is anticipated
tonight. Breezy south winds in the Owens Valley this afternoon
with gusts 15-20 knots. Easterly breezes at KDAG today, becoming
light and variable for westerly tonight. Gusty north winds
continue in the lower Colorado River Valley through the afternoon
but quickly become light around sunset. VFR conditions prevail
across the region with SCT to BKN clouds above 15kft moving in
this afternoon and evening.

&&

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

&&

$$

SHORT TERM...Outler
LONG TERM...Meltzer
AVIATION...Woods

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