Hurricane Lorenzo reaches Category 5 intensity
GOES-16 (GOES-East) “Clean” Infrared Window (10.35 µm) images (above) showed Hurricane Lorenzo during the time it intensified to a Category 5 storm around 0130 UTC on 29 September 2019. A plot of the CIMSS Advanced Dvorak Technique (below) indicated a peak intensity estimate of 143 knots from 0220-0820 UTC.#Lorenzo has strengthened into a Category 5 hurricane at 45°W – the farthest east Category 5 #hurricane in the Atlantic on record. Previous record was Hurricane Hugo in 1989 at 54.6°W. pic.twitter.com/FXGgKFPc3m
— Philip Klotzbach (@philklotzbach) September 29, 2019
A toggle between NOAA-20 VIIRS Day/Night Band (0.7 µm) and Infrared Window (11.45 µm) images at 0425 UTC is shown below. Lorenzo was moving through an environment characterized by low values of deep-layer vertical wind shear (above). In addition, Lorenzo was moving over water having warm Sea Surface Temperatures but only modest Ocean Heat Content (below).