Area Forecast Discussion
Issued by NWS Riverton, WY

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
585
FXUS65 KRIW 030758
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
1258 AM MST Tue Nov 3 2026

.KEY MESSAGES...

- Low clouds linger over much of the area this morning,
  scattering out after sunrise. Although fog remains possible,
  confidence is low (20%) for any widespread impacts.

- Dry conditions with seasonal to slightly below average
  temperatures will be in place today and continue through the
  rest of the week.

&&

.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 on 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 WEDNESDAY/...
Issued at 945 PM MST Mon Nov 2 2026

Mainly VFR conditions, except for KRKS, with some light rain
and MVFR ceilings ongoing for the first hour or two to start the
period. Otherwise, VFR thereafter with a limited coverage of
possible IFR conditions with fog/stratus at KBPI/KPNA and LIFR
at KJAC between 11-14Z. However, confidence low with the ongoing
mid level ceilings across much of the CWA limiting development
but carrying TEMPO groups with these limiting visibilities but
scattered low stratus. Clouds finally do start to clear west to
east as high pressure builds in, scattering and lifting out
after 14-18Z and into the afternoon hours for the remainder of
the period. Light winds throughout, 10kts or less, at all
locations with no other weather elements at this time.

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.

&&

$$

DISCUSSION...LaVoie
AVIATION...Lowe