Station Name: SNAKE RIVER AB JACKSON LAKE AT FLAGG RANCH WY
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 6,818 feet

Nearest Address:
John D Rockefeller Jr Pkwy
Flagg Ranch, WY 83414
Teton County

GPS Coordinates: 44.09888889, -110.6675

Nearby Water Temperatures

Winter Weather Advisory issued February 16 at 9:52AM MST until February 17 at 5:00PM MST by NWS Riverton WY

Effective: Mon February 16, 2026, 9:52 AM
Expires: Tue February 17, 2026, 7:15 AM

* WHAT...Snow expected. Total snow accumulations between 6 and 11 inches. Winds gusting as high as 55 mph. * WHERE...Wind River Mountains West, Teton and Gros Ventre Mountains, and Salt River and Wyoming Ranges. * WHEN...From 11 PM this evening to 5 PM MST Tuesday. * IMPACTS...Travel could be difficult due to a combination of falling snow and gusty winds. The hazardous conditions could impact the Tuesday morning and evening commutes, especially for mountain passes like Teton, Togwotee, and South Passes. * ADDITIONAL DETAILS...Snow accumulations 4 to 8 inches for Teton and Togwotee Passes and 2 to 5 inches for South Pass. The highest elevations of the Wind River Range could see snow accumulations near 20 inches.

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 16 at 9:52AM MST until February 17 at 5:00PM MST by NWS Riverton WY

Effective: Mon February 16, 2026, 9:52 AM
Expires: Tue February 17, 2026, 7:15 AM

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches across much of the area, with higher amounts 8 to 12 inches over Pitchstone Plateau of southwest Yellowstone. Accumulations up to 2 inches around Mammoth. Winds gusting as high as 45 mph. * WHERE...Yellowstone National Park. * WHEN...From 11 PM this evening to 5 PM MST Tuesday. * IMPACTS...Backcountry travel will be difficult.

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 16 at 9:52AM MST until February 17 at 5:00PM MST by NWS Riverton WY

Effective: Mon February 16, 2026, 9:52 AM
Expires: Tue February 17, 2026, 7:15 AM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. Winds gusting as high as 40 mph. * WHERE...Jackson Hole and Star Valley. * WHEN...From 11 PM this evening to 5 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Tuesday morning commute. * ADDITIONAL DETAILS...The period of heaviest snow is expected between 11PM and 9AM MST. Winds increase after 11PM, with gusts 30 mph or greater starting about 4AM. There is a 40 percent chance for Jackson town to get greater than 4 inches of snow.

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 17 at 3:11AM MST until February 17 at 5:00PM MST by NWS Riverton WY

Effective: Tue February 17, 2026, 3:11 AM
Expires: Tue February 17, 2026, 5:00 PM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches. Winds gusting as high as 40 mph. * WHERE...Jackson Hole and Star Valley. * WHEN...Until 5 PM MST this afternoon. The heaviest snow will fall this morning. * IMPACTS...Plan on slippery road conditions. The hazardous conditions will impact the Tuesday morning commute. * ADDITIONAL DETAILS...The period of heaviest snow is expected until 9AM MST.

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 17 at 3:11AM MST until February 17 at 5:00PM MST by NWS Riverton WY

Effective: Tue February 17, 2026, 3:11 AM
Expires: Tue February 17, 2026, 5:00 PM

* WHAT...Snow expected. Total snow accumulations between 3 and 6 inches across much of the area, with higher amounts 8 to 12 inches over Pitchstone Plateau of southwest Yellowstone. Accumulations up to 2 inches around Mammoth. Winds gusting as high as 45 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Backcountry travel will be difficult.

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 .