There is a threat of isolated to widely scattered severe microburst winds of 60-70 mph on Wednesday, primarily between 12 PM and 7 PM. Thunderstorms will be dry in nature, with little to no rainfall, and wind gusts may reach far away from their parent thunderstorm.
A combination of gusty south to southwest winds up to around 40 mph and daytime relative humidity values near 8-12 percent will result in critical fire weather conditions in portions of southwest Utah, especially below 8000 feet. A Red Flag Warning is in effect Wednesday from 12 PM to 9 PM.
A strong cold front will move through northwest Utah Wednesday evening, with about a 50% chance of producing wind gusts exceeding 60 mph near Park Valley, Curlew Junction, and Wendover. Farther from the terrain wind gusts across the West Desert and Great Salt Lake are likely to exceed 45 mph. Winds will be strongest from the northwest after 6PM through 3 AM.
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