![]() While the new probabilistic forecast will generally have the influence of a human forecaster, it should be treated as an experimental product and used with caution, while the legacy mountain weather forecast remains the official snow safety forecast. The new probabilistic forecast is considered a beta / test product for the remainder of this season as we gather feedback and input that will inform how this product evolves in the future to meet the snow safety partners' needs. The human forecaster retains the ability to adjust the median or max value of each of these parameters. This map is a product of the National Operational Hydrologic. Wind direction, speed, gusts, and uncertainty are based on in-house model blends. For an interactive version of this map, please visit National Operational Hydrologic Remote Sensing (NOHRSC) This map is created using observed snow depth from National Weather Service trained observers, satellite information and aerial snow surveys. The temperature, snow level, snow ratio, and lightning fields are based on the official NWS point forecast with the spread for each variable derived from the National Blend of Models (includes 100 ensemble members and a mix of high resolution and global models). totals are the sums of the negative departures of average daily temperatures. ![]() The snow and water amount forecasts are based on the Probabilistic Snowfall Forecasts with the human forecaster able to modify the probabilistic information as needed. National Weather Service Office near you. This includes using more robust science and statistics behind each probabilistic field by leveraging the extensive amount of ensemble forecast information now available. The main goal of developing the new probabilistic mountain weather forecast is to better communicate the range of potential outcomes in the forecast, while also making timing and trend information more readily apparent with visualizations. The operational mountain weather forecast has long provided a simple probabilistic snowfall (and water content) forecast, while many other fields of the forecast like temperature, snow ratio, snow level, and wind provided deterministic forecast values. No unnecessary travel advisories are issued for Interstate 25 from Glendo to Casper.The new probabilistic mountain weather forecast is being provided for the remainder of this season as a demonstration for our snow safety partners in Little Cottonwood Canyon and Provo Canyon to evaluate the utility of added probabilistic data and new forecast visualizations. Black ice conditions are present near Chugwater. The Wyoming Department of Transportation continues to report slick roads throughout District 2, which includes Natrona County and a large portion of Interstate 25. Not all of the measurements are considered official yet. Further north, high winds are expected east of Lake Erie and a wintry mix will change to rain for the interior Northeast into. through Wednesday with strong to severe thunderstorms and heavy rain from the Southeast into the Mid-Atlantic and coastal New England. Measurements have come from National Weather Service stations and volunteer weather reports. A storm with a trailing cold front will sweep across the eastern third of the U.S. The National Weather Service says observations have been collected from a variety of sources with varying equipment and exposures. Daniel has received between 3 and 5 inches of snow, Green River 2 inches of snow and Cody 1–3 inches of snow. That matches Dubois and Thermopolis, and is an inch less than Meeteetse. ![]() Friday, released by the National Weather Service in Riverton show the hardest hit part of Wyoming has been Sinks Canyon with between 24 and 28 inches of snow.Īlso receiving around a foot and a half of snow is Riverton with 16–20 inches of snow, and Lander with 18–20 inches of snow.Ĭasper falls closer to the middle range with 10 inches of snow. The latest snowfall totals, measured through 9 a.m. AccuWeather highlights how snow amounts for October 2023 to April 2024 will compare to the historical average. Wyoming’s Thanksgiving snowstorm has produced upwards of 2 feet of snow in some places.
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