Credit NOAA (Click to Enlarge)
Calbuco Volcano in southern Chile has erupted for the first time since 1972, with the last major eruption occurring in 1961 that sent ash columns 12-15 kilometers high. This image was taken by the Suomi NPP satellite’s VIIRS instrument in a high resolution infrared channel around 0515Z on April 23, 2015.
Thunderstorms are among the most powerful weather events on Earth. They can bring much needed rainfall, yet they also produce dangerous hazards such as lightning, hail, flash flooding, and tornadoes. Understanding how storms form, how they…
How 30 Years of NOAA R&D Made a Tsunami Forecast Land Exactly When It Mattered Event in brief. In late July 2025, a magnitude 8.8 megathrust earthquake off Russia’s Kamchatka Peninsula triggered Pacific-wide tsunami alerts.…
The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based on a hurricane’s sustained wind speed. This scale estimates potential property damage. Hurricanes reaching Category 3 and higher are considered major hurricanes because of…