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Accidents and Incidents Report

Yellowstone National Park Forecast

FPUS55 KRIW 220720
ZFPRIW

Zone Forecast Product for Western and Central Wyoming
National Weather Service Riverton WY
119 AM MDT Tue May 22 2018

WYZ020-221000-
Natrona County Lower Elevations-
WYZ001-221000-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
119 AM MDT Tue May 22 2018

.REST OF TONIGHT...Mostly cloudy with isolated rain showers and
snow showers. Lows 32 to 38. Chance of precipitation 20 percent. 
.TUESDAY...Partly cloudy in the morning, then mostly cloudy with
scattered rain showers and isolated thunderstorms in the
afternoon. Some thunderstorms may produce gusty winds, small
hail, and heavy rainfall in the afternoon. Highs 54 to 62.
Southeast winds around 15 mph in the afternoon. Chance of
precipitation 40 percent. 
.TUESDAY NIGHT...Mostly cloudy. Scattered rain showers and
isolated thunderstorms in the evening, then numerous rain
showers, snow showers and thunderstorms after midnight. Some
thunderstorms may produce gusty winds, small hail, and heavy
rainfall in the evening. Snow accumulation up to 1 inch. Lows
34 to 40. Chance of precipitation 60 percent. 
.WEDNESDAY...Rain showers likely in the morning, then rain
showers likely and slight chance of thunderstorms in the
afternoon. Highs 47 to 53. Southwest winds around 15 mph in the
afternoon. Chance of precipitation 70 percent. 
.WEDNESDAY NIGHT...Mostly cloudy. Rain showers likely and slight
chance of thunderstorms in the evening, then slight chance of
rain showers after midnight. Lows 36 to 42. Chance of
precipitation 60 percent. 
.THURSDAY...Not as cool. Mostly cloudy. Chance of rain showers
and slight chance of thunderstorms in the afternoon. Highs 55 to
63. Chance of precipitation 30 percent. 
.THURSDAY NIGHT...Partly cloudy. Chance of rain showers and
slight chance of thunderstorms in the evening. Lows 34 to 40.
Chance of precipitation 30 percent. 
.FRIDAY...Partly cloudy. Highs 59 to 67. 
.FRIDAY NIGHT...Partly cloudy in the evening then clearing. Lows
36 to 42. 
.SATURDAY...Mostly sunny in the morning, then partly cloudy with
a 30 percent chance of rain showers in the afternoon. Highs 61 to
69. 
.SATURDAY NIGHT...Partly cloudy. Lows 36 to 42. 
.SUNDAY...Partly cloudy in the morning, then mostly cloudy with a
40 percent chance of rain showers in the afternoon. Highs 58 to
66. 
.SUNDAY NIGHT...Mostly cloudy. Chance of rain showers in the
evening, then chance of rain showers, possibly mixed with snow
showers after midnight. Lows 35 to 41. Chance of precipitation
40 percent. 
.MEMORIAL DAY...Mostly cloudy with a 40 percent chance of rain
showers. Highs 53 to 61. 

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