TY - RPRT TI - The Fujita Tornado Intensity scale : a critique based on observations of the Jarrell tornado of may 27, 1997 AU - Phan, Long T PY - 1998 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS TN 1426 DO - 10.6028/NIST.TN.1426 ER -