Area Forecast Discussion
Issued by NWS Las Vegas, NV
FXUS65 KVEF 240903
Area Forecast Discussion
National Weather Service Las Vegas NV
203 AM PDT TUE MAY 24 2016
.SYNOPSIS....Low pressure will be over the area through Wednesday
leading to well below normal temperatures and possible showers over
the Sierra and portions of central and southern Nevada. Dry and
occasionally breezy conditions are expected elsewhere. Warmer
temperatures return by the end of the week but they will remain
.SHORT TERM...Today through Thursday.
The first of two shortwaves will weaken as it moves through the area
this morning. Shower chances today will be primarily confined to the
northern portions of the forecast area including parts of Inyo,
Esmeralda, central Nye and Lincoln counties where the better
moisture and instability are forecast. Temperatures this afternoon
will be cooler with highs 10-15 degrees below normal. Winds will
generally be in the 10-20 mph range with gusts up to 30 mph.
The next wave is forecast to become a closed low off the west coast
this afternoon and then move across the deserts Wednesday/Wednesday
night. There will be better potential for showers reaching further
south and affecting the Clark county mountains on Wednesday. The GFS
and NAM indicates there may be enough instability near the center of
low as it tracks across the deserts Wednesday that if sufficient
moisture is present, showers could develop in some of the desert
areas as well. We currently have this area dry however it would be
worth keeping an eye on. Once the system exits to the east Thursday,
dry northwest flow settles in behind it. Less wind is expected
Wednesday and Thursday.
Temperatures will remain 10-15 degrees below normal Wednesday with
the trough over the deserts but is expected to warm several degrees
on Thursday with weather east of the area and abundant sunshine
.LONG TERM...Friday through Tuesday.
Not much change from 24 hours ago. Longwave troughing will remain
across the western CONUS through the holiday weekend, with the core
energy holding across the Pacific northwest. Breezy to locally windy
conditions each afternoon will be the main story, while temperatures
generally hover slightly below normal over the weekend. Looks like
there will be just enough remnant moisture and destabilization each
afternoon to warrant a slight chance of showers and thunderstorms
across the Sierra Nevada and southern Great Basin mountains.
.AVIATION...For McCarran...VFR through the period. Generally
southwest winds 10-20 kts with gusts to 30 kts, especially in the
afternoon and evening hours. Directions should consistently range
from 180 to 240. Forecast is high confidence.
For the rest of southern Nevada...northwest Arizona...and southeast
California...For the southern Great Basin and Inyo County, chance
for scattered showers and isolated thunderstorms, especially this
afternoon and tonight. CIGs 050-100, potentially approaching MVFR in
heavier showers, with mountain obscurations likely. Winds generally
light. Outside of this region, VFR with S to SW winds 10-20 kts,
with occasional gusts to 30 kts, especially during the afternoon and
.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather according to standard operating procedures.
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