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Accidents and Incidents Report

Yellowstone National Park Forecast

FPUS55 KRIW 222134
ZFPRIW

Zone Forecast Product for Western and Central Wyoming
National Weather Service Riverton WY
333 PM MDT Fri Sep 22 2017

WYZ020-231000-
Natrona County Lower Elevations-
WYZ001-231000-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
333 PM MDT Fri Sep 22 2017

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS
EVENING...

.LATE THIS AFTERNOON...Snow showers, possibly mixed with rain
showers early in the evening, then snow showers likely, possibly
mixed with rain showers early in the evening. New snow
accumulation up to 1 inch. Highs 35 to 41. Chance of
precipitation 60 percent. 
.TONIGHT...Mostly cloudy. Scattered snow showers, possibly mixed
with rain showers early in the evening, then scattered snow
showers. Snow accumulation up to 1 inch. Total snow accumulation
up to 6 inches. Lows 21 to 27. Chance of precipitation
50 percent. 
.SATURDAY...Mostly cloudy. Isolated snow showers in the morning,
then scattered rain showers, possibly mixed with snow showers in
the afternoon. Highs 36 to 42. Chance of precipitation
30 percent. 
.SATURDAY NIGHT...Mostly cloudy with a 30 percent chance of snow.
Lows 21 to 27. 
.SUNDAY...Mostly cloudy. Chance of snow in the morning, then
chance of rain, possibly mixed with snow in the afternoon. Highs
37 to 43. Chance of precipitation 30 percent. 
.SUNDAY NIGHT...Mostly cloudy with a 30 percent chance of snow.
Lows 22 to 28. 
.MONDAY...Mostly cloudy in the morning then becoming partly
cloudy. Highs 38 to 44. 
.MONDAY NIGHT...Partly cloudy in the evening then clearing. Lows
21 to 27. 
.TUESDAY...Partly cloudy in the morning, then mostly cloudy with
isolated rain showers in the afternoon. Highs 41 to 47. Chance of
showers 20 percent. 
.TUESDAY NIGHT...Mostly cloudy in the evening, then partly cloudy
with isolated snow showers after midnight. Lows 23 to 29. Chance
of snow 20 percent. 
.WEDNESDAY...Partly cloudy. Highs 45 to 51. 
.WEDNESDAY NIGHT...Partly cloudy in the evening then clearing.
Lows 24 to 30. 
.THURSDAY...Mostly sunny. Highs 48 to 54. 
.THURSDAY NIGHT...Mostly clear. Lows 26 to 32. 
.FRIDAY...Sunny. Highs 48 to 54. 

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