Headline:
Winter Weather Advisory issued April 22 at 1:13AM MDT until April 23 at 11:00PM MDT by NWS Riverton WY
Event:
Winter Weather Advisory
Urgency:
Expected
Effective:
April 22, 2026 - 12:13am
Expires:
April 22, 2026 - 5:00pm
Description:
* WHAT...Snow expected. Total snow accumulations between 5 and 12
inches, with the accumulations up to 18 inches across the
Pitchstone Plateau in southwest Yellowstone. Winds gusting between
30 and 45 mph.
* WHERE...Yellowstone National Park.
* WHEN...From noon today to 11 PM MDT Thursday.
* IMPACTS...Travel could be very difficult.
* ADDITIONAL DETAILS...Total snow accumulation of 1 to 3 inches at
Mammoth and 6 to 9 inches around Old Faithful and Canyon.
Instruction:
Slow down and use caution while traveling.
For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts, visit
https://weather.gov/riw/winter .
For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info .
Area Description:
Yellowstone National Park
Forcast Office:
NWS Riverton WY
Sender: