Billings, Montana – A single rumble of thunder today is your signal to act immediately, as lightning can strike within 10 miles of storms across Montana during the active spring and summer season.
According to the National Weather Service, lightning often strikes far beyond the heaviest rain, especially in the West where storms can form quickly over mountains and open plains. Across Montana, warm-season instability and elevation-driven storm development create dangerous cloud-to-ground lightning, particularly during the afternoon and early evening hours.
In Billings, open areas like Riverfront Park, the Yellowstone River corridor, and stretches along I-90 quickly become high-risk zones when storms develop nearby. In Bozeman, areas near Montana State University and open terrain in the Gallatin Valley face increased exposure, while Missoula sees similar risks along the Clark Fork River and I-90, where outdoor recreation and mountainous terrain heighten lightning danger.
Lightning kills about 20 people annually in the United States, with many incidents tied to hiking, fishing, and outdoor work in remote areas. Survivors often suffer severe neurological damage, burns, and long-term cognitive effects. In Montana, backcountry hikers and anglers are especially vulnerable due to limited shelter and rapidly changing weather.
If you hear thunder, you are already within striking distance. Move indoors immediately or into a hard-topped vehicle if available. Avoid ridgelines, open fields, and water. Wait at least 30 minutes after the last thunder before resuming outdoor activity.
Storm chances will continue across Montana through the season, with additional lightning alerts possible as conditions evolve.
