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Accidents and Incidents Report

Yellowstone National Park Forecast

FPUS55 KRIW 252215
ZFPRIW

Zone Forecast Product for Western and Central Wyoming
National Weather Service Riverton WY
413 PM MDT Thu May 25 2017

WYZ020-261000-
Natrona County Lower Elevations-
WYZ001-261000-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
413 PM MDT Thu May 25 2017

.LATE THIS AFTERNOON...Cloudy with scattered rain showers and
isolated thunderstorms. Some thunderstorms may produce gusty
winds, and small hail. Highs 41 to 49. Northwest winds around
15 mph. Chance of precipitation 30 percent. 
.TONIGHT...Cloudy. Scattered rain showers, possibly mixed with
snow showers and thunderstorms in the evening, then scattered
snow showers after midnight. Some thunderstorms may produce gusty
winds, and small hail in the evening. Snow accumulation around
1 inch. Lows 26 to 32. Chance of precipitation 50 percent. 
.FRIDAY...Numerous snow showers in the morning. Numerous rain
showers in the late morning and afternoon. Isolated thunderstorms
in the afternoon. Some thunderstorms may produce gusty winds, and
small hail in the afternoon. Little or no snow accumulation.
Highs 41 to 49. Chance of precipitation 70 percent. 
.FRIDAY NIGHT...Cloudy. Isolated thunderstorms early in the
evening. Scattered rain showers in the evening. Scattered snow
showers through the night. Some thunderstorms may produce gusty
winds, and small hail early in the evening. Little or no snow
accumulation. Lows 23 to 29. Chance of precipitation 50 percent. 
.SATURDAY...Breezy. Not as cool. Mostly cloudy. Isolated rain
showers and snow showers in the morning, then isolated rain
showers and thunderstorms in the afternoon. Some thunderstorms
may produce gusty winds, and small hail in the afternoon. Highs
47 to 57. Northwest winds 15 to 20 mph in the afternoon. Chance
of precipitation 20 percent. 
.SATURDAY NIGHT...Breezy. Mostly cloudy in the evening then
becoming partly cloudy. Lows 28 to 34. North winds 15 to 20 mph
in the evening. 
.SUNDAY...Partly cloudy in the morning then becoming mostly
cloudy. Isolated rain showers. Highs 52 to 60. Chance of showers
20 percent. 
.SUNDAY NIGHT...Partly cloudy. Isolated rain showers and
thunderstorms in the evening. Lows 29 to 35. Chance of
precipitation 20 percent. 
.MEMORIAL DAY...Mostly sunny in the morning, then partly cloudy
with isolated rain showers and thunderstorms in the afternoon.
Highs 53 to 63. Chance of precipitation 20 percent. 
.MONDAY NIGHT...Partly cloudy with isolated rain showers and
thunderstorms in the evening, then mostly clear after midnight.
Lows 31 to 37. Chance of precipitation 20 percent. 
.TUESDAY...Partly cloudy in the morning, then mostly cloudy with
scattered rain showers and thunderstorms in the afternoon. Highs
55 to 65. Chance of precipitation 40 percent. 
.TUESDAY NIGHT...Mostly cloudy with isolated rain showers and
thunderstorms in the evening, then partly cloudy after midnight.
Lows 32 to 38. Chance of precipitation 20 percent. 
.WEDNESDAY...Partly cloudy. Highs 56 to 66. 
.WEDNESDAY NIGHT...Partly cloudy. Lows 32 to 38. 
.THURSDAY...Partly cloudy. Highs 57 to 67. 

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