289 
FXUS65 KVEF 212038
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
140 PM PDT Fri Sep 21 2018

.SYNOPSIS...Dry conditions will prevail into early next week as a 
southwest flow keeps moisture east of the area. Temperatures will 
remain several degrees above normal through the middle of next week. 
&&

.SHORT TERM...through Sunday night. Flat ridge over the area has 
allowed some limited 700mb moisture to remain over the higher 
terrain of southern Nevada, southern Mohave, and eastern San 
Bernardino Counties where a few flat cumulus have developed this 
afternoon. Nearly the same conditions are expected again Saturday 
before a trough off the west coast helps bring in more of a 
southwest flow and brings drier air into the area. Some afternoon 
breezes will be seen over the northern portions of the forecast area 
Saturday afternoon. Breezy winds are expected to be more widespread 
Sunday with most areas seeing winds in the 10-25 mph range. At this 
time it looks like winds will remain below any Red Flag or Wind 
Advisory criteria. Temperatures will remain several degrees above 
normal into next week. 

.LONG TERM...Monday through Thursday. 

The long term weather looks to remain dry and warm. On Monday and 
Tuesday, we will be on the backside of a long wave trough located 
over much of the central U.S. A weak impulse will push southward 
along the western extent of this trough across southern Nevada and 
southern California during the same time frame resulting in a weak 
push of northerly winds over the southern Great Basin Monday night 
into Tuesday morning. A weak ridge builds in Wednesday and Thursday 
as a closed low strengthens off the northern California coast. No 
significant winds or changes in temperature are expected in the long 
term period through Thursday. Daily max temps remain around 5 
degrees above normal for the first few days of astronomical fall.
&&

.AVIATION...For McCarran...Light easterly winds expected the 
remainder of the afternoon before winds turn more southwest after 
sunset. Speeds overnight expected to be around 7 kts. Winds will 
once again become easterly after 18z Saturday with speeds around 6-7 
kts. Few clouds at 12k feet expected between 18z-01z through 
Saturday afternoon. 

For the rest of southern Nevada, northwest Arizona and southeast 
California...VFR conditions are expected for the period. Winds 
generally less than 10 kts through 18z Saturday. Southwest to west 
winds are expected to increase after 18z Saturday across portions of 
San Bernardino, central Nye, Lincoln, and Mohave Counties with 
speeds 10-15 kts. Other areas will remain 10 kts or less. 
&&

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

$$

Short Term/Aviation...Gorelow
Long Term...Guillet

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