Severe Thunderstorm Risk with Large Hail Expected Overnight
A risk for severe thunderstorms will develop across parts of the Upper Mississippi Valley late tonight into early Tuesday morning. Storms are expected to form during the evening and strengthen overnight, with large hail as the primary hazard. Some hailstones could become quite large in the strongest storms. As these storms move east, isolated strong to marginally severe thunderstorms may reach parts of Lower Michigan by early Tuesday. While the threat there appears lower, some hail and gusty winds are still possible. Overall, this system will bring a period of active weather overnight, and residents in affected areas should remain alert for rapidly changing conditions and possible warnings.

Critical Fire Weather Conditions Develop Across Wyoming and the High Plains
Critical fire weather conditions are expected today across parts of central and eastern Wyoming, where strong winds and very dry air will combine to increase wildfire risk. Gusty westerly winds and low humidity will also create elevated fire concerns across the Four Corners region and portions of the central and southern High Plains. Dry vegetation will make it easier for fires to start and spread quickly. In addition, isolated thunderstorms may develop from eastern Arizona into western New Mexico, but these storms are likely to produce little rainfall. Lightning from these storms could spark new fires, adding to the overall fire danger across the region.