Multi-state Red Flag Warnings issued as strong winds and very low humidity raise wildfire danger across the central U.S.

Red Flag Warnings are in effect across a broad swath of the Plains, Rockies, and parts of the Upper Midwest on Wednesday, April 22, 2026, as strong winds, very low relative humidity, and dry fuels create critical fire weather conditions. The National Weather Service warns that any fires that start could spread quickly and be hard to control. In some areas, isolated dry thunderstorms may produce lightning with little or no rain, increasing the risk of new fires. Source