Target Sector (2.5-minute interval) JMA Himawari-9 AHI Visible and Infrared images (above) showed Category 4 Typhoon Khanun as it moved just south of Okinawa Island from 0502-1002 UTC on 01 August 2023. Visible images depicted mesovortces within the eye.During that 0502-1002 UTC time period, peak wind gusts at the 3 METAR sites located in... Read More
The Joint Typhoon Warning Center (JTWC) website has for more than a day been tracking invest number 91W, shown above. The feature is circled in yellow, meaning development is unlikely in the next 24 hours. What satellite data might be used to make that determination?MIMIC Total Precipitable water fields, for the 24 hours ending... Read More
Pacific Hurricane Calvin was sampled by Radar Constellation Mission #3 (RCM-3) shortly after 0200 UTC on 14 July 2023. The SAR winds (click here to access a JAOTech article on this subject!) show strong winds surrounding a not-quite-circular closed eye, with a region of strong winds extending in a curved... Read More
