Winter Storm Warning for Yellowstone National Park and Wyoming Mountains
This alert is no longer in effect.
NOAA issued it on April 15, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Winter Storm Warning has been issued by NWS Riverton WY for Yellowstone National Park and surrounding areas, with heavy snow accumulations of 8 to 15 inches and winds up to 50 mph expected from 6 PM MDT on April 15 to 6 AM MDT on April 17.
Read this weather record in 30 seconds
- Record type
- Winter Storm Warning
- Affected area
- Northwestern Wyoming
- Issued
- April 15, 2026
- Issuing authority
- NWS Riverton WY
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Northwestern Wyoming.
Alert Details
This Winter Storm Warning was issued by NWS Riverton WY. It is effective from 12:40 AM MDT on April 15, 2026.
Affected Areas
The warning affects Yellowstone National Park, Absaroka Mountains, Teton and Gros Ventre Mountains in Wyoming.
What You Should Do
If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For more information, visit the provided NWS resources.
Expected Conditions
Heavy snow is expected with total accumulations between 8 and 15 inches. Winds are forecasted to gust as high as 50 mph, potentially causing limited visibility.
Timeline
The warning is in effect from 6 PM MDT on April 15, 2026, to 6 AM MDT on April 17, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (725 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 15, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.