Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 232056
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
200 PM PDT Mon Oct 23 2017

.SYNOPSIS...Warm and dry weather is expected this week with the
warmest temperatures expected for the first half of the week ahead.
In addition, periods of gusty north winds are expected down the
Colorado River Valley through mid week.
&&

.Short Term...through Thursday Night.

A strong ridge over the western states has led to some very warm
temperatures across the region with most areas about 10-15 degrees
above normal. A strong surface pressure gradient has also develop
which is bringing some rather gusty winds down the Colorado River
Valley especially near Laughlin/Bullhead City. Winds have been
gusting over 40 mph for a few hours and with the tight gradient
remaining in place through Tuesday look for those winds to continue.
Current Lake Wind Advisory looks good. Little change expected for
Tuesday with gusty winds and warm temperatures in place, although we
may see a slight drop in temperatures.

By Wednesday the high will expand further north keeping warm
temperatures in place, but also bringing a reduction in the surface
pressure gradient. This will allow for winds to finally subside down
the Colorado River. Temperatures will still remain fairly warm with
readings continuing to be around 10 degrees above normal.

A weak system dropping southeast through the Rocky Mountain states
Thursday to weaken the high and push the center further west. Little
change in temperatures will be seen on Thursday, but slight cooling
will occur Friday and Saturday as heights begin to fall. Although
these temperatures readings will drop about 5-7 degrees, we are
still expected to remain above normal through the weekend.
&&

.AVIATION...For McCarran...A northeast breeze will hold through the
evening and begin to transition to a north to northwest wind around
midnight. Wind speeds will remain between 9-12 kts, with a a few
gusts up to 20 kts mixed in. Similar patterns are expected Tuesday
with northeast winds through the day and increasing gustiness during
the afternoon. Clear skies and warmer than normal temperatures will
continue through the week.

For the rest of southern Nevada, northwest Arizona and southeast
California...Breezy to strong north winds will persist overnight,
with the strongest area of winds focused along the lower Colorado
river. A similar set up will develop Tuesday, with slightly stronger
north winds around 30-40 kts along the river and breezy north-
northeast winds between 5-15 kts elsewhere. Otherwise, clear skies,
warm temperatures and dry weather expected.
&&

.FIRE WEATHER...Red Flag Warning issued for the Colorado River
Valley area through Tuesday afternoon. High pressure building over
the area will bring dry, windy and warm conditions through much of
the week. Gusty north winds today and especially on Tuesday down the
Colorado River where fuels remain critical. Humidity values will
drop into the single digits and lower teens with poor overnight
humidity recoveries.
&&

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

$$

Discussion/Fire Weather...Gorelow
Aviation...Boothe

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