Effective:

2025-03-12T13:43:00-06:00

Expires:

2025-03-13T04:45:00-06:00

Certainty:

Likely

Event:

Winter Weather Advisory

Type:

Update

Severity:

Moderate

Urgency:

Expected

Areas:

Gallatin and Madison County Mountains and Centennial Mountains

* WHAT...Snow expected. Total snow accumulations between 3 and 7 inches with 9 to 13 inches on mountain peaks and higher elevation passes. Winds gusting as high as 40 mph. * WHERE...Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From 6 AM Thursday to 6 AM MDT Friday. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. * ADDITIONAL DETAILS...Snow may alternate between heavier bursts and periods of lighter snowfall. Be prepared for rapidly changing conditions.

Instruction: Slow down and use caution while traveling. The latest road conditions can be obtained by calling 5 1 1 or visiting the MDT Road Report website.

Effective:

2025-03-12T13:26:00-06:00

Expires:

2025-03-13T08:00:00-06:00

Certainty:

Likely

Event:

Winter Weather Advisory

Type:

Update

Severity:

Moderate

Urgency:

Expected

Areas:

Yellowstone National Park

* WHAT...Snow expected. Total snow accumulations between 10 and 16 inches in southwestern Yellowstone Park; 4 to 8 inches for most of the Park; 2 to 5 inches around Mammoth. Winds gusting as high as 40 mph. * WHERE...Yellowstone National Park. * WHEN...From 6 AM Thursday to 6 AM MDT Friday. * IMPACTS...Travel could be difficult. People should exercise caution if traveling into the backcountry.

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 .