In the evening of 28 July 2025, residents of the Samoan island of Upolu experienced an intense thunderstorm which produced hail, a very rare event for maritime tropical Pacific environments. Social media videos show 1 – 2 cm hailstones falling around residents excited to see such novel conditions. The forecasters... Read More
5-minute PACUS Sector GOES-18 (GOES-West) daytime True Color RGB and Nighttime Microphysics RGB images created using Geo2Grid (above) revealed the cyclonic circulation of a Mesoscale Convective Vortex (MCV) that migrated west-northwestward across southern Arizona into southeast California (not far south of the California/Nevada border) during the 2-day period from 16 July to 18 July 2025. This MCV... Read More
1-minute Mesoscale Domain Sector GOES-18 (GOES-West) GeoColor RGB images with an overlay of Next Generation Fire System (NGFS) Fire Detection polygons (above) showed the rapid growth of the Cram Fire in central Oregon during the day on 14 July 2025. Strong westerly winds helped to transport a dense veil of smoke eastward. This wildfire had started... Read More
2025 has proven to be an atypically wet year for American Samoa. The cumulative precipitation chart backs that up: going back to 1 January, the total rainfall at Pago Pago has been the highest on record up to this date, and total rainfall is 70% higher than a normal year.July... Read More
