A prescribed fire designated as the Bonanza Ridge RX burn has charred 550 acres in Broadwater County, according to state wildfire tracking data reported September 24. The cause is listed as undetermined in available records, which is notable for a fire carrying the RX designation — a label typically applied to intentionally set land management burns conducted by agencies such as the U.S. Forest Service, Bureau of Land Management, or state forestry.
Broadwater County sits directly east of Lewis and Clark County, with the Missouri River corridor and Canyon Ferry Reservoir between the burn area and the Helena valley. At 550 acres, the fire is substantial enough to have produced visible smoke for residents in surrounding areas depending on wind direction.
No structures or evacuations were reported in available information. Residents with questions about the fire's status or proximity to private land should contact the Montana Department of Natural Resources and Conservation or the relevant federal land management agency for the Broadwater County area.