What temperature are winter fuel reduction burns recommended?

What temperature are winter fuel reduction burns recommended?

• A. 60 F or below
• B. 70 F or below
• C. 50 F or below
• D. 40 F or below

Answer: (A)

Cooler temperatures help keep fuel moisture higher and fire behavior more manageable, which is why winter fuel reduction burns are typically planned for days at 60 degrees Fahrenheit or below. When temperatures stay at or below this threshold, fuels dry out more slowly, humidity is often higher, and the ignition, spread, and smoke production stay within controllable limits. Warmer days—even in winter—tend to dry fuels more and can increase flame length and spread, making suppression harder. The other options would either permit conditions that raise fire danger or impose stricter limits that would unnecessarily shrink burn opportunities, so the practical guideline is 60 F or below.

Cooler temperatures help keep fuel moisture higher and fire behavior more manageable, which is why winter fuel reduction burns are typically planned for days at 60 degrees Fahrenheit or below. When temperatures stay at or below this threshold, fuels dry out more slowly, humidity is often higher, and the ignition, spread, and smoke production stay within controllable limits. Warmer days—even in winter—tend to dry fuels more and can increase flame length and spread, making suppression harder. The other options would either permit conditions that raise fire danger or impose stricter limits that would unnecessarily shrink burn opportunities, so the practical guideline is 60 F or below.