Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 212041
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
141 PM PDT Sat Oct 21 2017

.SYNOPSIS...High pressure will begin building over the region
Sunday and then remain in place through much of the upcoming week.
Temperatures will climb to above normal readings and conditions will
remain dry along with light winds.
&&

.Discussion...through Friday.

Winds have decreased over much of the area as surface pressure
gradients have weakened. Although winds down the Colorado River have
remained fairly gusty, wind speeds have continued to decrease. This
trend will continue through the remainder of the afternoon and have
elected to cancel the Lake Wind Advisory and Red Flag Warning.

High pressure will begin to build over the region Sunday with
lighter winds and increasing temperatures. Temperatures are expected
to jump about 10-15 degrees over Saturday`s readings. With high
pressure expected to remain in place through much of the week,
temperatures will remain several degrees above normal for several
days.

There is some indication in the models that an area of low pressure
will dig south across the Rocky Mountain states Thursday and Friday
bringing an increase in north to northeast winds along with cooler
temperatures by the end of the week. Conditions look to remain dry.
&&

.FIRE WEATHER...Winds will continue to decrease this afternoon
with generally light winds expected over the next few days as high
pressure builds over the region. Conditions will remain dry with
minimum humidity values dropping into the single digits and teens
with high temperatures running several degrees above normal.
&&

.AVIATION...For McCarran...Light and variable winds will continue
through the early evening and likely remain below 10 knots. Drainage
winds between 4-7 knots will develop after 03z and remain overnight.
On Sunday light diurnal winds are expected. Clear skies through the
period, with some high clouds.

For the rest of southern Nevada, northwest Arizona and southeast
California...Gusty north winds will continue down the Colorado
through afternoon and begin to taper off this evening. Elsewhere,
light winds favoring diurnal patterns are expected through the
evening and overnight. Conditions will be similar on Sunday, albeit
north winds down the Colorado river should not as strong. Mostly
clear skies through the period.
&&

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

$$

DISCUSSION/FIRE WEATHER...Gorelow
AVIATION...Booth

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