Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 122236
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
236 PM PST Tue Dec 12 2017

.SYNOPSIS...
Dry weather is expected for the next week with periods of breezy,
northerly winds Thursday through the weekend. Slightly higher
winds will be possible down the Colorado River Valley during these
times.

&&

.DISCUSSION...Today through Tuesday.

Current blocking pattern will continue through tomorrow before a
shortwave trough works southward down across the Rockies on
Thursday. This will briefly weaken the ridge over the area and
absorb the trough to the south as we go into Friday. High pressure
will quickly build back in behind the feature on Friday with next
shortwave right on its heels pushing a slightly more fortified
boundary through early on Saturday. No precipitation is expected
with either of these waves with the only impacts being breezy,
northerly winds for Thursday, Saturday, and Sunday as well as
temps dropping a few degrees Friday through the weekend. Slightly
stronger winds down the Colorado River Valley could create choppy
water on the lakes as well as elevated fire danger conditions.
Benign weather is expected early next week as temps warm a couple
degrees each day.

&&

.FIRE WEATHER...
Pattern of very dry conditions will continue through Thursday as
minimum RH values drop into the single digits each day. Gusty,
northerly winds will continue down the Colorado River Valley each
afternoon before more widespread gusty winds settle in Thursday
through the weekend as a series of weak disturbances pass across
the region. RH values rebound slightly Friday through weekend
between 15-25 percent each afternoon.

&&

.AVIATION...For McCarran...Light winds and clear skies expected
through the Wednesday evening. Anticipate light and variable winds
during the day with southwest drainage overnight between 5-8 kts.
Breezy north winds work into the valley late Wednesday and will
linger through Thursday. Some high clouds will accompany breezy
north winds.

For the rest of southern Nevada, northwest Arizona and southeast
California...No significant weather expected over the period.
Generally light winds at all sites except KIFP, where breezy north
winds will persist through Wednesday afternoon. Clear skies and VFR
conditions. Enhanced north winds and few more high clouds are
expected on late Wednesday and linger through Thursday.

&&

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

$$

Aviation...Boothe
Short Term/Fire Weather....Guillet

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