580 
FXUS65 KVEF 281640
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
940 AM PDT Sun Sep 28 2025

.KEY MESSAGES...

* Chances for isolated showers and thunderstorms will continue today 
  for southern Nevada, southeastern California, and northwestern 
  Arizona.

* A low pressure system will bring breezy winds and drier air to
  the region as it approaches the region on Monday.

&&

.DISCUSSION...through next Saturday.

Current radar and satellite imagery shows isolated showers and 
thunderstorms circulating around a low in northwestern Arizona, 
southern Nevada, and southeastern California. These storms will 
continue to circulate around the low through the early morning 
hours, but will be less intense than storms that occurred on 
Saturday afternoon. As this low slowly pushes east throughout the 
day it will continue to help fuel isolated showers and 
thunderstorms across southern Nevada, southeastern California, 
and northwestern Arizona this afternoon. Hazards will be similar 
to the past few days, with moderate-to-heavy rain, flash flooding,
strong outflow winds, small hail, and frequent lightning will be 
hazards with any storms that develop. Storms will tend to favor 
areas of higher terrain for development and will dissipate with 
the loss of daytime heating after sunset. 

An uppper-level trough approaching the West Coast will help the low 
responsible for this weekend's unsettled weather clear out of the 
region on Monday. This trough will also bring breezy winds to the 
area as well as drier southwesterly flow aloft, which will help 
to slowly scour moisture from the area early next week. 
Southwesterly flow aloft will continue through the week as 
troughiness persists across the Western US. Meanwhile, Tropical 
Storm Narda will continue to slowly meander north, weakening as 
she moves into cooler waters. Eventually, we will see moisture 
from the remnants of Narda get advected into southern California 
with some portions of our forecast area seeing a relative increase
in moisture during the latter half of the week. This relative 
increase in moisture looks to be short-lived as another system 
looks to flush the moisture out as it rolls through the area. 

&&

.AVIATION...For Harry Reid...For the 18Z Forecast 
Package...A few, mainly light showers will remain around the Las 
Vegas Valley this morning along with CIGS around 8-9kft. We are 
expected to see some additional afternoon convection, but this 
should remain mainly terrain-focused and there is less than a 20% 
chance of any storms in the Valley. Northeast winds around 8-10 
knots this morning is expected to become more southeast around 8-10 
knots after 20Z. With any convection, there still remains a slight 
chance of outflow winds reaching the terminal, but overall the 
threat remains low compared to previous days. 

For the rest of southern Nevada, northwest Arizona and southeast 
California...For the 18Z Forecast Package...Scattered light showers 
continue to linger across Clark County this morning with scattered 
thunderstorms over central and southern Mohave County. The trend 
through the remainder of the morning will be for showers in Clark 
County to continue to weaken with scattered thunderstorms remaining 
and pushing north. For this afternoon, the best chances of 
thunderstorms will be in the southern Great Basin, Sierra, and 
eastern Mohave County. Gusty, erratic winds are likely near any 
storms. Elsewhere, expecting either dry conditions or isolated 
showers. Outside of any convective influences, most locations will 
see light winds that follow typical, daily patterns. The exception 
to this is the Owens Valley where 15-25 knot southerly gusts are 
forecast this afternoon. Scattered to broken clouds at or above 
10kft.

&&

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

&&

$$

DISCUSSION...Stessman
AVIATION...Gorelow

For more forecast information...see us on our webpage:
https://weather.gov/lasvegas or follow us on Facebook and Twitter