Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 291846
SPSRIW

Special Weather Statement
National Weather Service Riverton WY
1246 PM MDT Wed Mar 29 2017

WYZ017-018-301000-
Wind River Basin-Lander Foothills-
Including the cities of Riverton, Shoshoni, and Lander
1246 PM MDT Wed Mar 29 2017

A large and moist storm system will impact the area from Thursday
night through Friday night. The most challenging aspect of this
storm is the temperature and thus the snow levels. We know much
of the area will see significant precipitation later Thursday
night through Friday evening with over an inch of liquid quite
possible, especially from Riverton to Lander with less in the
north half. The bigger question is the snow level. Right now it
looks like the snow level will lower to around 5500 feet Friday
morning but uncertainty remains on how low the snow level will
drop. If the snow level drops just a little further, Lander and
other areas above 5000 feet could see very heavy snow from this
system.

Stay tuned for frequent updates on this developing storm system
and the potential for heavy rain, rain and snow mix or heavy wet
snow across the area. Snowfall amounts in the mountains will
likely exceed a foot and some of the lower elevations above 5500
feet could see anywhere from a couple inches to as much as 6 to 9
inches.

$$

WYZ020-022-301000-
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
1246 PM MDT Wed Mar 29 2017

A large and moist storm system will impact the area from Thursday
night through Friday night. The most challenging aspect of this
storm is the temperature and thus the snow levels. The Casper
area looks like it will stay rain during the day Friday with some
snow Friday night before ending. Casper Mountain will likely see
mostly snow with 4 to 6 inches possible and locally more in the
highest spots of Casper Mountain. Strong northeast wind gusts of
30 to 40 mph are possible in open or exposed areas.

Stay tuned for frequent updates on this developing storm system.

$$

WYZ028>030-301000-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Rock Springs, Green River, and Wamsutter
1246 PM MDT Wed Mar 29 2017

A large and moist storm system will impact the area from Thursday
night through Friday night. The most challenging aspect of this
storm is the temperature and thus the snow levels. Rain is
expected to develop across much of the area Thursday night and
continue through Friday. Snow levels will initially be above the
Interstate 80 corridor but as colder air moves in some of the rain
will change to snow later Friday into Friday evening. Strong
northeast wind will blow on Friday at speeds of 35 to 55 mph and
we could see some brief blizzard conditions when the rain changes
to snow late Friday into Friday evening before the snow ends.

Stay tuned for frequent updates on this developing storm system.

$$

WYZ002-301000-
Absaroka Mountains-
1246 PM MDT Wed Mar 29 2017

Snow will develop across the area Thursday night and continue into
Friday evening before ending. Snowfall amounts of 3 to 6 inches
will generally fall with up to 8 inches on the south end of the
Absarokas.

Stay tuned for frequent updates on this developing storm system.

$$

WYZ024-027-301000-
Salt River and Wyoming Ranges-South Lincoln County-
Including the cities of Kemmerer and Cokeville
1246 PM MDT Wed Mar 29 2017

A developing storm system will likely spread precipitation across
the area Thursday night through Friday. Snow will fall through
the period with rain changing to snow Thursday night across the
lower elevations of southern Lincoln County including Kemmerer.
Snowfall amounts by late Friday will vary from 3 to 6 inches but
these are preliminary snowfall amounts so stay tuned for future
updates as the storm draws closer.

$$

WYZ005-007-301000-
Southwest Big Horn Basin-Owl Creek and Bridger Mountains-
Including the city of Thermopolis
1246 PM MDT Wed Mar 29 2017

A developing storm system will likely spread precipitation across
the area Thursday night through Friday. Rain is expected for the
Thermopolis area with snow above 6000 to 6500 feet. The Owl Creeks
and Bridger mountains could see 4 to 8 inches from this storm
system by late Friday night. Stay tuned for frequent updates on
this developing storm system.

$$

WYZ008-009-301000-
Bighorn Mountains West-Bighorn Mountains Southeast-
1246 PM MDT Wed Mar 29 2017

Snow will develop across the Big Horns Thursday night and
continue into Friday evening before ending. Snowfall amounts of 4
to 8 inches will generally fall by late Friday night. Travel will
likely be impacted by snow covered roads and gusty north to
northeast wind of 25 to 40 mph.

Stay tuned for frequent updates on this developing storm system.

$$

WYZ010-011-301000-
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
1246 PM MDT Wed Mar 29 2017

A cold rain is expected across the lower elevations of Johnson
County later Thursday evening through Friday evening. Rain amounts
of a quarter to one half inch are expected with locally higher
amounts. The foothills will likely see several inches of snow
above 6000 feet or so.

Stay tuned for frequent updates on this developing storm system.

$$

WYZ003-301000-
Cody Foothills-
Including the cities of Cody and Meeteetse
1246 PM MDT Wed Mar 29 2017

A cold rain is expected to develop across the Cody Foothills
Thursday night. As colder air filter in on Friday, some areas
above 5500 to 6000 feet will likely change to snow with 2 to 4
inches quite possible.

Stay tuned for frequent updates on this developing storm system.

$$

SKRBAC



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