Enhanced Fujita scale; EF-scale
A meteorological scale used to rate tornado intensity based on damage. Used in technical and news contexts.
The Japan Meteorological Agency assessed the tornado's intensity using the Enhanced Fujita scale.
The original Fujita scale, predecessor to the Enhanced Fujita scale. 改良藤田スケール is the updated version with more detailed damage indicators.
From 改良 (improved) + 藤田 (Fujita, after Tetsuya Theodore Fujita) + スケール (scale). A direct translation of 'Enhanced Fujita scale'.