2.5-minute Target Sector JMA Himawari-9 AHI Visible images (above) showed Super Typhoon Sinlaku as its eye approached Saipan (station identifier PGSN) in the Mariana Islands on 13-14 April 2026. Mesovrticies were evident within the eye. After reaching its peak intensity on 12 April (blog post 1 | blog  post 2), Sinlaku was in the... Read More

2.5-minute Target Sector JMA Himawari-9 AHI Infrared images (above) showed Super Typhoon Sinlaku as it rapidly intensified to a 160-knot Category 5 storm (ADT | SATCON) by 1800 UTC on 12 April 2026, southeast of Saipan (station identifier PGSN) in the Mariana Islands. Cloud-top infrared brightness temperatures began to gradually... Read More

Typhoon Sinlaku (whom we introduced to you two days earlier when it was a mere tropical storm) has undergone steady and significant intensification and has now reached Category 5 status with estimated winds as high as 150 knots (170 mph). Satellite imagery of Sinlaku depicts it as a nearly perfectly symmetric eye with a... Read More

A somewhat unusual event could be found on the morning of 10 April 2026 when twin tropical cyclones could be found in the western Pacific. Since each storm was on the other side of the equator, the two systems were rotating in opposite directions. To the north was Sinlaku, a... Read More