Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 142033
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Special Weather Statement
National Weather Service Riverton WY
233 PM MDT Thu Sep 14 2017

WYZ003-151000-
Cody Foothills-
Including the cities of Cody and Meeteetse
233 PM MDT Thu Sep 14 2017

A large early Autumn storm has been brewing in British Columbia
during the last couple of days and is expected to sweep southeast
toward Northwest Wyoming during the next few days. This storm will
supply the area with much colder weather than what many residents
have become accustomed to during the recent summer months. In
addition, a moisture laden stream of Pacific moisture will feed
into the storm from the west. This will result in the first cold
widespread precipitation event in a few months. A Steady chilly
rainfall will develop this evening and persist through Saturday.

Rain will turn to snow in the adjacent Absaroka Mountains west of
the Cody Foothills tonight with snow accumulating anywhere from 4
to 8 inches and locally as much as 16 inches at elevations well
above 10000 feet by mid day Saturday where winter storm warnings
will be in effect.

High temperatures may not even rise above 40 on Friday in the
Cody area. Rain will mix with and turn to snow Friday night and
continue Saturday morning in the Cody Foothills including the town
of Cody where 2 to 3 inches of snow will likely accumulate during
this time frame. Precipitation will diminish Saturday afternoon.

Outdoor interests should prepare for a major change toward more
winter-like conditions tonight through Saturday.


$$

WYZ016-151000-
Upper Wind River Basin-
Including the city of Dubois
233 PM MDT Thu Sep 14 2017

A large early Autumn storm has been brewing in British Columbia
during the last couple of days and is expected to sweep southeast
toward Western Wyoming during the next few days. This storm will
supply the area with much colder weather than what many residents
have becoming accustomed to during the recent summer months. In
addition, a moisture laden stream of Pacific moisture will feed
into the storm from the west. This will result in the first cold
widespread precipitation event in a few months. A Steady chilly
rainfall will develop this evening and persist through Saturday.

Rain will turn to snow in the adjacent Absaroka and Wind River Mountains
surrounding Dubois tonight with snow accumulating anywhere from 4
to 8 inches and locally as much as 16 inches at elevations well
above 10000 feet by mid day Saturday where winter storm warnings
will be in effect.

High temperatures will remain in the 40s Friday in the Dubois
area. Rain will mix with and turn to snow Friday night and
continue Saturday morning in the Upper Wind River Basin, including
the Dubois area, where 1 to 2 inches of snow will likely
accumulate during this time frame. Precipitation will diminish
Saturday afternoon.

Outdoor interests should prepare for a major change toward more
winter-like conditions tonight through Saturday.

$$

WYZ013-151000-
Jackson Hole-
Including the city of Jackson
233 PM MDT Thu Sep 14 2017

A large early Autumn storm has been brewing in British Columbia
during the last couple of days and is expected to sweep southeast
toward Western Wyoming during the next few days. This storm will
supply the area with much colder weather than what many residents
have becoming accustomed to during the recent summer months. In
addition, a moisture laden stream of Pacific moisture will feed
into the storm from the west. This will result in the first cold
widespread precipitation event in a few months. A Steady chilly
rainfall will develop this evening and persist through Saturday.

Rain will turn to snow in the adjacent Teton and Gros Ventre Range
surrounding the Jackson Valley tonight with snow accumulating
anywhere from 4 to 8 inches by mid day Saturday where winter
weather advisories will be in effect.

High temperatures will remain in the 40s Friday in the Jackson
area. Rain will mix with and turn to snow Friday night and
continue Saturday morning in the Jackson Valley, including the
town of Jackson, where an inch or less of snow will likely
accumulate during this time frame. Precipitation will diminish
Saturday afternoon.

Outdoor interests should prepare for a major change toward more
winter-like conditions tonight through Saturday.


$$

LIPSON



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