GOES-18 Visible imagery, above, from the CSPP Geosphere site, shows Gilma and Tropical Invest #91E (the invest became a tropical depression at 1500 UTC on 22 August; see below) at around 17oN latitude on 21 August 2024 in the tropical eastern Pacific. The animation below shows the same scene on 20 August, and the organizational improvement in the invest... Read More

Himawari-9 airmass RGB imagery, above, shows the extratropical transition of Typhoon Ampil. At the beginning of the animation, the typhoon is approaching Japan from the south. By 0000 UTC on 17 August, the typhoon has moved east of Japan, and a Potential Vorticity anomaly just west of the storm (identifiable by the orange hue... Read More

Typhoon Ampil was at the northern edge of the view of the Direct Broadcast antenna at the forecast office on Guam, and CSPP software processed the above images (courtesy Douglas Schumacher) showing the ample eye of the Typhoon. Microwave imagery suggests an eyewall that is not quite complete, especially on... Read More

VIIRS imagery from Suomi NPP and NOAA-20, above, show the structure of Hurricane Ernesto as it pulls away from Puerto Rico. Dry air is entrained within the storm, as evidenced by the regions near the center where convection is absent. Sea-surface temperatures in the region are quite warm, however, and... Read More