Station Name: Firehole River at Old Faithful, YNP
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 7,372 feet

Nearest Address:
Mallard Lake Trail
Yellowstone National Park, WY 82190
Teton County

GPS Coordinates: 44.4593333, -110.8222722

Nearby Water Temperatures

Winter Weather Advisory issued February 10 at 12:30PM MST until February 11 at 5:00PM MST by NWS Riverton WY

Effective: Tue February 10, 2026, 12:30 PM
Expires: Wed February 11, 2026, 7:00 AM

* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches across the Teton Mountains and the southern portions of the Gros Ventre Mountains. The highest peaks could see around 12 inches of snow. Snow accumulations of 2 to 5 inches across Togwotee Pass and 4 to 9 inches across Teton Pass. * WHERE...Teton and Gros Ventre Mountains. * WHEN...From 5 PM this afternoon to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday commutes, especially over Teton Pass. * ADDITIONAL DETAILS...The heaviest period of snow is expected Wednesday 5AM to 5PM, with possible snowfall rates of 0.5 inch/hour to 1 inch/hour.

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.

Winter Weather Advisory issued February 11 at 1:30AM MST until February 11 at 5:00PM MST by NWS Riverton WY

Effective: Wed February 11, 2026, 1:30 AM
Expires: Wed February 11, 2026, 5:00 PM

* WHAT...Snow expected. Snow accumulations of 4 to 10 inches across the Teton Mountains and the southern portions of the Gros Ventre Mountains. The highest peaks could see around 12 inches of snow. Snow accumulations of 2 to 5 inches across Togwotee Pass and 5 to 8 inches across Teton Pass. * WHERE...Teton and Gros Ventre Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday commutes, especially over Teton Pass. * ADDITIONAL DETAILS...The heaviest period of snow is expected Wednesday 6AM to 3PM, with possible snowfall rates of 0.5 inch/hour.

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 .

Winter Weather Advisory issued February 10 at 2:42PM MST until February 12 at 5:00AM MST by NWS Pocatello ID

Effective: Tue February 10, 2026, 2:42 PM
Expires: Wed February 11, 2026, 6:00 AM

* WHAT...Snow expected. Total snow accumulations between 3 and 9 inches. * WHERE...Big Hole Mountains, Centennial Mountains - Island Park, and Caribou Range. * WHEN...Until 5 AM MST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Wednesday morning commute.

Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions.

Winter Weather Advisory issued February 11 at 1:50AM MST until February 12 at 5:00PM MST by NWS Pocatello ID

Effective: Wed February 11, 2026, 1:50 AM
Expires: Wed February 11, 2026, 3:00 PM

* WHAT...Snow. Additional snow accumulations between 1 and 9 inches. * WHERE...Big Hole Mountains, Centennial Mountains - Island Park, and Caribou Range. * WHEN...Until 5 PM MST Thursday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Wednesday morning and evening commutes. * ADDITIONAL DETAILS...The storm arrived later than expected and will linger longer than previously thought.

Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions.