Area Forecast Discussion
Issued by NWS Las Vegas, NV
FXUS65 KVEF 191813 AAA
Area Forecast Discussion
National Weather Service Las Vegas NV
1014 AM PST Sun Feb 19 2017
.SYNOPSIS...Some lingering showers will still be possible across
mainly Lincoln, far eastern Clark and Mohave counties today and
again in the Sierra and southern Great Basin on Monday and Tuesday.
It looks to be breezy at times through mid-week with cooler
temperatures during the second half of the week.
.UPDATE...No updates at this time. Showers have ended for the the
time being over most areas except near Peach Springs in northeastern
Mohave County. Shower activity is possible through the day,
primarily over portions of Lincoln and Mohave counties. Otherwise,
Gusty south winds are expected across much of the area today.
.PREV DISCUSSION...324 AM PST...
.SHORT TERM...through Tuesday Night.
Fully saturated air mass will lead to areas of fog or low clouds
just about everywhere this morning. Have seen Fort Irwin briefly
report visibility down to a 1/4 mile. Otherwise, generally see
visibility drop to between 1 and 3 miles at times.
An area of light rain which blossomed over the past few hours mainly
across eastern Clark County showing signs of slowly moving east. The
eastward drift will continue throughout the day across Mohave County
as the trough over Arizona shifts into the southern Rockies late
Very brief break in precip expected as models in good agreement
showing broad shield of light precip reaching the southern Sierra
Nevada spine this evening. Heaviest precip with this overrunning
event will occur over northern Inyo County with lighter precip
mainly in the higher terrain of the southern Great Basin Monday and
Tuesday. Decided to issue a Winter Weather Advisory for the eastern
Sierra Slope and White Mountains of Inyo County between 10 pm this
evening and 10 am Tuesday. Should see between 6-12 inches between 7-
9 kft and above 9 kft 12-24 inches.
Southwest breezes strongest in northwest Arizona and northwest San
Bernardino County this afternoon. More widespread southerly winds
are forecast for Monday and Tuesday. Even though skies look to be
Partly to Mostly Cloudy during the period temperatures will warm to
above normal on Monday and Tuesday.
.LONG TERM...Wednesday through Saturday.
Upper-level trough swinging by Wednesday will yield shower chances
in the northern tier of counties in the CWA in addition to northwest
Arizona. This will also lead to a belt of breezy west to southwest
winds along I-15 with some breezy north winds on the back side in
Nye county by Thursday morning. Attention then turns to the next
low, which will be digging down the NW US coast by Saturday morning.
The GFS remains the deeper, more moist solution, while the Euro
stays drier. Maintained current middle-of-the-road forecast for now.
Temperatures look to remain on the cool side of normal after
.AVIATION...For McCarran...CIGS generally 5-6k feet today with
showers possible in the mountains. S-SW winds 10-15kts with gusts to
around 20kts through the afternoon then SW winds around 10kts
overnight. Clouds scatter out tonight then increasing again Monday
For the rest of southern Nevada...northwest Arizona...and southeast
California...Southerly winds 10-15kts with higher gusts today. CIGS
4-5k feet through the day. Another slug of moisture will bring the
lower ceilings late tonight with showers developing over the Sierra.
.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
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