2.5-minute Target Sector JMA Himawari-9 Infrared images (above) showed Ragasa as it intensified from a Category 4 Typhoon at 0000 UTC on 21 September 2025 to a Category 5 (140-knot) Super Typhoon at 0600 UTC and then further to a 145-knot Super Typhoon by 1200 UTC (SATCON). There was a... Read More

Within 24 hours, a volcano on the Indonesian island of Flores erupted three times, with reports of an ash plume penetrating 18 km into the atmosphere. Mount Lewotobi is a twin volcano consisting of a pair of peaks, Perempuam and Laki-laki. It is this later peak that has been active... Read More

At 5:04 PM local time (2104 UTC) on 1 July 2025, the newest member of the geostationary ring was launched into orbit. The MTG-S1 satellite (to be renamed Meteosat 13 upon commissioning) represents a first for EUMETSAT: a hyperspectral sounder in geostationary orbit. While EUMETSAT has long supported hyperspectral sounders... Read More

GOES-West true color imagery, above, from the CSPP Geosphere site (link), shows Hurricane Barbara northeast of Tropical Storm Cosme in the eastern Pacific. Active convection is apparent over both storm centers during the course of the day. What does the future hold for these storms? MIMIC Total Precipitable Water (source),... Read More