Hurricane Lorenzo reaches Category 5 intensity

September 29th, 2019 |

GOES-16 "Clean" Infrared Window (10.35 µm) images [click to play animation | MP4]

GOES-16 “Clean” Infrared Window (10.35 µm) images [click to play animation | MP4]

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.

Plot of the CIMSS Advanced Dvorak Technique (ADT) for Hurricane Lorenzo [click to enlarge]

Plot of the CIMSS Advanced Dvorak Technique (ADT) for Hurricane Lorenzo [click to enlarge]

 


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.

NOAA-20 VIIRS Day/Night Band (0.7 µm) and Infrared Window (11.45 µm) images (courtesy of William Straka, CIMSS) [click to enlarge]

GOES-16 Water Vapor images, with contours and streamlines of deep-layer wind shear [click to play animation]

GOES-16 Water Vapor (6.9 µm) images, with contours and streamlines of deep-layer wind shear [click to play animation]

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).

Sea Surface Temperature and Ocean Heat Content on 29 September, with a plot of the track/intensity of Lorenzo [click to enlarge]

Sea Surface Temperature and Ocean Heat Content on 29 September, with a plot of the track/intensity of Lorenzo [click to enlarge]

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