During a period when American Samoa had been under a prolonged Flood Watch, the Weather Service Office at Pago Pago requested that a GOES-18 (GOES-West) Mesoscale Domain Sector be positioned over the region (due to their lack of radar). 1-minute Infrared imagery with GLM Flash Points (above) displayed deep convection with intermittent lightning activity... Read More
During the day of 27 March 2026, a band of strong strorms propagated from north of the Samoan islands southward to the island themselves. These storm were notable for deep convection and strong environmental instability and were the cause of flood warnings across American Samoa. A good first look at... Read More
A persistent Kona low coupled with strong water vapor transport from an atmospheric river has brought devastating floods to the state of Hawaii in late March 2026. Rain totals over the past ten days have exceeded 40 inches in some locations, prompting evacuation orders for thousands. Over two hundred people... Read More
5-minute CONUS Sector GOES-18 (GOES-West) Infrared images viewed using RealEarth (above) displayed deep convection (with intermittent GLM-indicated lightning activity) that moved across the Hawaiian island of O’ahu on 20 March 2026 — producing heavy rainfall and flash flooding.The first Flash Flood Warning for O’ahu on that day was issued at 0857 UTC,... Read More
