950
FXUS65 KRIW 040433
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
933 PM MST Tue Nov 3 2026

.KEY MESSAGES...

- Mainly clear overnight with seasonable, chilly temperatures
  with some increasing clouds across the southern counties.

- A quick weather system early Wednesday morning brings periods
  of clouds and rain shower chances (20-30%) to Lincoln and
  western Sweetwater Counties and into the mid afternoon hours.

- Overall dry conditions with seasonable to slightly above
  average temperatures continue through the rest of the week.

&&

.UPDATE...
Issued at 1136 AM MST Tue Nov 3 2026

Quiet weather over the area today. A few areas of low clouds linger
over western Wyoming, but continue to dissipate. Seasonal
temperatures and light winds persist through the much of the week. A
quick-moving system to the south tonight and into Wednesday brings
increased clouds across the south, with some light rain showers from
an Afton-Rock Springs line and south.

&&

.DISCUSSION...
Issued at 1248 AM MST Tue Nov 3 2026

Precipitation has ended across the area, with winds finally
subsiding over northern Johnson County. Skies remain overcast over
much of the CWA early this morning, with clear skies over
southwestern portions of the state. Low clouds/fog will be possible
at times through the rest of the morning, with many locations having
cloud heights drop below 1000ft at times already. There is not a
strong signal for fog with low visibilities at any particular area,
but will continue to keep an eye on any developing trends.
Skies will quickly scatter out by 18Z, with mostly clear skies
across areas east of the Divide.

There are not many changes with the forecast from the previous
discussion. Conditions are expected to remain dry through the rest
of the week, as an area of high pressure settles over MT today.
Temperatures will stay at or slightly below normal through the week
with winds staying light. The high center will also keep a weak
Pacific system to the south over UT/CO Wednesday, with the main
impact being mainly in the form of cloudy skies over
southern/southwestern portions. Isolated showers will be possible
over the western half of Sweetwater County and southern Lincoln
County from the northern end of this low pressure system.

The pattern then briefly becomes more active by Thursday as a trough
moves over the Northern Rockies and pushes the high center over the
Northern Plains. The chance for high winds in northern Johnson
County no longer looks likely as models have now trended toward a
ridge building over the Great Basin and Northern Rockies, keeping
the PFJ further north away from the region.  Temperatures will trend
above normal Sunday and Monday as the aforementioned ridge shifts
more over the Northern Rockies and Alberta/Saskatchewan.

&&

.AVIATION /06Z TAFS THROUGH 06Z THURSDAY/...
Issued at 930 PM MST Tue Nov 3 2026

VFR conditions expected at all TAF sites for the entirety of the
period. Mainly high clouds throughout the period, with lower mid
level ceilings at RKS by 12Z with a few passing showers to the
west, carrying VCSH (<10%) through 15Z. There after, upper level
clouds remain into Wednesday night. Light winds throughout 10kts
or less, lighter after sunset by 00Z Wednesday evening.
Otherwise, mainly dry with no other weather elements expected.

Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for
the latest information on smoke, icing, and turbulence forecasts.


&&

.RIW WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

UPDATE...Wittmann
DISCUSSION...LaVoie
AVIATION...Lowe