55 to 70 mph winds wind chills -35 to - 55 degrees, I brought in the big guns, black locust, osage orange and apple, the Blaze king loved it, house never dropped below 74 degrees, definitely brutal in Northeast Ohio. Could have burned oak, or hickory just as good but there's something about this stash that I can't resist burning in this type of weather plenty of it, most ten years or older out of weather in buildings.