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000
FXUS65 KVEF 230834
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
134 AM PDT Tue Apr 23 2024

.SYNOPSIS...Breezy conditions are expected much of the week along
with a gradual cooling trend as two low pressure systems move
through the region. By Friday and Saturday, temperatures will fall
below late April normals, and there will be a chance of showers
mainly along and north of I-40.
&&

.SHORT TERM...through Thursday night. Midnight satellite loop showed
scattered mid level clouds over the northwest corner of the CWA and
clear skies elsewhere. Surface obs showed light winds and
temperatures similar to 24 hours ago. The pattern will be changing
this period as high pressure which brought well above normal
temperatures moves away and Pacific low pressure moves in, pushing
temperatures below late April normals by Thursday. As the low
approaches, instability and difluence will also increase a bit over
the northwest corner of the CWA, where Monday`s clouds were a
foreshadowing. Expect a slight chance of thunderstorms in that area
this afternoon and evening, and better chances Wednesday afternoon
and evening. South to west winds will also continue to increase
through Thursday, with the probability of advisory-level winds
increasing above 50% in CA zone 523 as early as Wednesday evening
per NBM 4.1 (MET and MAV MOS are also on board with this). The low
should move through the CWA Wednesday night with little fanfare,
followed by a stronger northern stream low which will be discussed
further in the long term section dropping south through the Pacific
Northwest, bringing increased chances for showers and thunderstorms
to Lincoln County Thursday night.

.LONG TERM...Friday through Monday.

A fairly potent northern stream shortwave will drop south Friday
bringing even cooler conditions to the region Friday and Saturday,
along with continued breezy to windy conditions. What`s perhaps
more interesting is the signal for some light precipitation as the
trough axis moves through Friday afternoon into Saturday, largely
thanks to cool air aloft and instability promoting some shower
and thunderstorm activity. Chances for precipitation are generally
focused from Interstate 40 northward, and are highest across the
Southern Great Basin. Temperatures will be several degrees below
normal Friday and Saturday, but gradually warm back up Sunday and
Monday as high pressure rebuilds across the region.
&&

.AVIATION...For Harry Reid...Light south-southwesterly winds will
pick up and become more southerly shortly after sunrise with 15 to
20 knot wind gusts. During this time there is a 10 to 20% chance
that winds may go east of 160 degrees with sustained speeds of 10
knots or greater. By 19Z winds will have gone back to a more south-
southwesterly direction with wind gusts increasing to around 25
knots. Wind gusts will drop off during the overnight hours before
returning on Wednesday morning. Winds will continue to maintain a
southerly to southwesterly direction into Wednesday afternoon.

For the rest of southern Nevada, northwest Arizona and southeast
California...KVGT, KEED, and KIFP will see light and variable winds
pick up as they swing around to the south shortly after sunrise. 15
to 25 knot southerly to southwesterly wind gusts will continue at
the aforementioned TAF sites into the evening hours. KHND will favor
a south-southwesterly direction into the overnight hours with wind
gusts to around 20 knots picking up later this morning and
continuing into the evening hours. KDAG will maintain a more
westerly direction into Wednesday with 20 to 30 knot wind gusts
briefly dropping off during the early morning hours before returning
shortly after sunrise and continuing through the overnight hours.
Light northwesterly winds will pick up and swing around to the south
later this morning at KBIH. These 15 to 20 knot southerly gusts will
continue through the afternoon and into the evening hours before
becoming light and variable.
&&

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

$$

SHORT TERM...Morgan
LONG TERM...Outler
AVIATION...Stessman

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