NASA sees super-rapid intensification of Supertyphoon Usagi
Friday, September 20, 2013 - 11:01
in Earth & Climate
The radar on the Tropical Rainfall Measuring Mission (TRMM) satellite captured an image of Supertyphoon Usagi near the end of a 24-hour period in which Usagi intensified by 65 knots. This is more than twice the commonly used 30-knot threshold for defining rapid intensification.