Headline:
Winter Weather Advisory issued April 21 at 12:09PM MDT until April 23 at 11:00PM MDT by NWS Riverton WY
Event:
Winter Weather Advisory
Urgency:
Expected
Effective:
April 21, 2026 - 11:09am
Expires:
April 22, 2026 - 6:00am
Description:
* WHAT...Snow expected. Total snow accumulations between 6 and 12
inches with the highest amounts across southwestern portions of
the Park. Winds gusting as high as 40 mph.
* WHERE...Yellowstone National Park.
* WHEN...From noon Wednesday to 11 PM MDT Thursday.
* IMPACTS...Travel could be very difficult.
* ADDITIONAL DETAILS...Total snow amounts up to 3 inches at Mammoth.
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 current road conditions across Yellowstone National Park, visit
https://nps.gov/yellowstone.
Area Description:
Yellowstone National Park
Forcast Office:
NWS Riverton WY
Sender: