Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 171645
SPSRIW

Special Weather Statement
National Weather Service Riverton WY
1045 AM MDT Tue Apr 17 2018

WYZ004>007-172100-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Including the cities of Thermopolis and Worland
1045 AM MDT Tue Apr 17 2018

...Much Colder with some Snow Today...

Behind a cold front, with a strong upper level disturbance
continuing across northern Wyoming, rain and snow showers will
continue spread to the southeast while decreasing in intensity and
extent through this afternoon. Snowfall could briefly be moderate
to locally heavy at times with accumulating mainly on grassy or
elevated areas. Roads will be mainly wet but could briefly become
slushy and hazardous this during bursts of heavier snowfall.

$$

WYZ008-009-172100-
Bighorn Mountains West-Bighorn Mountains Southeast-
1045 AM MDT Tue Apr 17 2018

...Much Colder with some Snow Today...

Snow will continue over the Bighorn Mountains through this
afternoon with the heaviest snowfall occurring between through mid
afternoon. Snowfall totals are expected to range between 3 and 5
inches with isolated locations seeing 6 to 8 inches. Granite and
Powder River passes will be wet, slushy, and possibly hazardous
through mid afternoon.

$$

WYZ010-011-172100-
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
1045 AM MDT Tue Apr 17 2018

...Much Colder, Windy with some Snow Today...

A strong cold front will continue to push south across Wyoming
today. Much colder temperatures will occur in wake of this front
with temperatures in the 30s. Light to moderate rain and or snow
showers will continue to impact Johnson County through late
afternoon. Snow accumulations of around 1 inch could occur
especially on grassy or elevated surfaces, but roads should remain
mainly wet except during brief bursts of heavy snowfall.
Additionally, a windy north to northwest wind of 25 to 35 mph
with some gusts of 45 to 55 mph will occur. Lightweight and high
profile vehicles should be especially cautious if traveling across
Johnson County today.

$$

WYZ015>019-172100-
Wind River Mountains East-Upper Wind River Basin-Wind River Basin-
Lander Foothills-Green Mountains and Rattlesnake Range-
Including the cities of Dubois, Riverton, Shoshoni, Lander,
and Jeffrey City
1045 AM MDT Tue Apr 17 2018

...Much Colder with some Snow Today...

Behind a cold front, with a strong upper level disturbance
continuing across northern Wyoming, rain and snow showers will
continue spread to the east to southeast today, decreasing in
intensity and extent this afternoon. 1 to 2 inches of snow could
accumulate, mainly on grassy or elevated surfaces. Roads are
expected to remain mainly wet, but could briefly become slushy, slick
or hazardous with any bursts of heavy snowfall. The heaviest snow
is expected to end early this afternoon light showers continuing
periodically across the Wind River Basin through the afternoon.

$$

WYZ014-025-026-172100-
Wind River Mountains West-Upper Green River Basin Foothills-
Upper Green River Basin-
Including the cities of Pinedale, La Barge, Big Piney, and Farson
1045 AM MDT Tue Apr 17 2018

...Much Colder with increasing northwest winds...

Scattered snow showers are tapering off and ending. However,
northwest winds between 20 and 30 mph with gusts around 45 mph
will develop and continue through the afternoon. This combined
with temperatures in the 30s will result in a blustery, chilly
spring day.

$$

WYZ028>030-172100-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Rock Springs, Green River, and Wamsutter
1045 AM MDT Tue Apr 17 2018

...Much Colder with some Snow Today...

Behind a cold front, with a strong upper level disturbance
continuing across northern Wyoming, rain and snow showers will
continue spread to the east to southeast today, decreasing in
intensity and extent early this afternoon. A quick inch or so of
snow could accumulate mainly on grassy or elevated surfaces.
Roads, including Interstate 80, will be wet and could briefly
become slushy or slick during bursts of heavier snow. Visibility
in the snow could quickly lower to under a half mile at times.
West to northwest winds of 25 to 35 mph with gusts of 45 to 55
mph are then expected, making it a blustery, chilly spring day.
Lightweight, high profile vehicles, should be especially cautious
if traveling across Sweetwater County today.

$$

WYZ020-022-172100-
Natrona County Lower Elevations-Casper Mountain-
Including the city of Casper
1045 AM MDT Tue Apr 17 2018

...Much Colder with some Snow Today...

A strong cold front will sweep across Wyoming today. This will
result in temperatures dropping into, and staying, the 30s. Some
rain and or snow will arrive this afternoon in wake of the strong
cold front and continue into early evening. There is also a
slight chance for a thunderstorm or two late this afternoon into
the early evening. Anywhere from a half inch to a couple of inches
could occur on grassy or elevated surfaces. Roads are expected to
be mainly wet, but could become slushy at times under heavier
snow showers.

$$

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