Mid-flame wind speed

n. Wind speed measured or forecast at a height above the ground equal to one-half of the flame height.

 

  • Discussion

 

Because flame height varies greatly, eye-level wind speed is often used as a surrogate for mid-flame wind speed. Mid-flame wind speed can be estimated by multiplying the open wind speed by a wind adjustment factor. Mid-flame wind speed is an important input predictor of surface fire behavior.