Tropical Cyclone Judy in the South Pacific OceanJMA Himawari-9 Infrared Window (10.4 µm) images of Tropical Cyclone Judy in the South Pacific Ocean on 27 February 2023 (above) displayed some unusually cold cloud-top infrared brightness temperatures — with isolated vales of -100ºC and colder (red pixels embedded within interior darker black regions).
The Central Cold Cover feature was displaced to the NNW of the low-level storm center — and Judy was moving through an environment of low deep-layer wind shear (below).
===== 28 February Update =====On the following day, 2.5-minute interval rapid scan Himawari-9 Infrared images (above) showed Judy as the storm was rapidly intensifying during its southward trek across the Vanuatu island chain. A ragged eye structure was intermittently observed.
A GMI Microwave (85 GHz) image at 1717 UTC (below) revealed that the eye of Judy was passing over the island of Epi, Vanuatu at that time.
===== 01 March Update =====Judy then further intensified to a Category 3 storm at 0900 UTC on 01 March (SATCON) — however, not long after that time, 2.5-minute rapid scan JMA Himawari-9 Infrared images (above) showed that the ragged eye became obscured by high clouds from surrounding deep convection.