Area Forecast Discussion
Issued by NWS Riverton, WY

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000
FXUS65 KRIW 100450
AFDRIW

Area Forecast Discussion
National Weather Service Riverton WY
1050 PM MDT Mon Oct 9 2017

.SHORT TERM...(This evening through Thursday)
Issued at 118 PM MDT Mon Oct 9 2017

High pressure will build over the area tonight through Wednesday.
Conditions will be dry with cold nights and cool days with a
gradual warming trend.  Southwest winds will be on the increase
on Wednesday and Thursday across southwest and central areas and
along and near the east slopes of the mountains where warming
will be greatest.  Some rain and snow showers, mainly snow above
7500 feet will move into the northwest Thursday afternoon.

.LONG TERM...(Thursday night through Monday)
Issued at 118 PM MDT Mon Oct 9 2017

The models continue to trend even weaker with the system for
Thursday night so we removed POPS for most areas. The main effect
will be to knock temperatures down by a few degrees. Another system,
this one potentially a bit stronger should approach the area later on
Friday and into Saturday. The models do have some differences in
timing and intensity however with the European looking further sour
and a bit stronger with more QPF than the GFS. For now, we kept
mainly higher elevation POPS across the west and in the mountains
until there is more agreement with the models. On Sunday, the GFS
tries to brush a weak system across the north with some light
precipitation. The European has nothing however. For now, we kept
the forecast largely dry. Mainly dry weather is then expected for
early next week.

&&

.AVIATION...(For the 06Z TAFS through 06Z Wednesday)
Issued at 1030 PM MDT Mon Oct 9 2017

VFR conditions will occur through the period. A gusty wind will
occur at KCPR airport on Tuesday into Tuesday night.

&&

.FIRE WEATHER...
Issued AT 118 PM MDT Mon Oct 9 2017

High pressure will build over the area tonight through Wednesday.
Conditions will be dry with cold nights and cool days with a
gradual warming trend.  Southwest winds will be on the increase
on Wednesday and Thursday across southwest and central areas and
along and near the east slopes of the mountains where warming
will be greatest.  Some rain and snow showers, mainly snow above
7500 feet will move into the northwest Thursday afternoon. The
lower air mass will be rather stable with temperature inversions
especially over the western valleys where poor to fair smoke
dispersal will be prevalent.  The best mixing will be in the
windier areas along and near the east slopes of the mountains
and across the southwest and central areas as winds increase with
the best chances for good smoke dispersal.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$

SHORT TERM...Baker
LONG TERM...Hattings
AVIATION...AR
FIRE WEATHER...Baker



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