This document has been transcribed from a scan of the February 1992 Fire Behavior Field Reference Guide. The scan was converted to editable text using OCR; the text was then edited and formatted. Outdated content referring to BEHAVE was not transcribed. Figures have been included in this document by simple copy-and-paste, not by scanning to an image file. Many figures should be re-created with graphing or illustration software. Tables were either copy-and-pasted or re-created in electronic format.