Duluth, MN – Northern Minnesota is facing a combination of dangerous heat and critical fire weather Tuesday, as scorching temperatures and dry, breezy conditions increase both heat-related health risks and the potential for rapid wildfire spread.
According to the National Weather Service in Duluth, high temperatures in the mid to upper 90s are expected across much of northeastern Minnesota and northwest Wisconsin Tuesday, with Heat Advisories possible for some areas. Cooler temperatures are expected near the immediate North Shore of Lake Superior, but most inland communities will experience oppressive heat through the afternoon.
At the same time, a Red Flag Warning is in effect from noon until 9 p.m. CDT for portions of the Borderlands and Boundary Waters Canoe Area Wilderness (BWCA). Very low relative humidity, gusty west to northwest winds, and extremely dry vegetation will create critical fire weather conditions, allowing any wildfire that starts to spread rapidly.
Communities including International Falls, Ely, Bigfork, Grand Marais, Silver Bay, Grand Rapids, Virginia, and surrounding areas are included in the fire weather concerns, while much of northeastern Minnesota will also experience dangerous afternoon heat.
Residents are urged to avoid outdoor burning, properly extinguish cigarettes, and postpone activities that could create sparks during the Red Flag Warning. Those spending time outdoors should also stay hydrated, take frequent breaks in the shade or air conditioning, and avoid strenuous activity during the hottest part of the day.
Fire weather conditions are expected to improve somewhat Wednesday as winds decrease, although low humidity may still create near-critical fire weather in some areas.
