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

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible and Infrared images (above) showed the WNW motion of the eye of Hurricane Erin during a 7-hour period as the tropical cyclone rapidly intensified from a Category 4  storm at 0950 UTC to a Category 5 storm at 1520 UTC, north of the Leeward Islands on... Read More

Due to a lack of radar coverage over American Samoa, WSO Pago Pago requested 1-minute Mesoscale Domain Sector coverage over the islands to monitor convective development and the potential for flash flooding. GOES-18 (GOES-West) Clean Infrared Window (10.3 µm) images (above) showed showers and thunderstorms that developed in the general vicinity of the... Read More

The ‘manati’ website (https://manati.star.nesdis.noaa.gov/) is a helpful NOAA/NESDIS/STAR website that includes different observations from Polar-Orbiting satellites including, as shown above, Altimetric Observations of Significant Wave Height. Observations from three different satellites are shown in the image, including Jason3 (0718-0722 UTC), Cryosat (0610-0614 UTC) and Sentinel-3A (0927-0930 UTC). This post will help you anticipate where tomorrow’s... Read More