CA-RRU-Taffle???

[RedFive]

Terms of rate of spread

I have a question as why Cal Fire has changed their terminology for rates of spread. As far as I know NWCG and CWCG have never posted an official memo one this. Can someone tell me why we are all not using the same terminology for rate of spread anymore? Every NWCG course still has it as the original that is taught, slow, moderate, and rapid. They have recently added critical but the definition is the same as rapid ROS…

Discussed in a 2020 thread