As a strong arctic cold front moved southward across the Gulf of Mexico toward southern Mexico on 25-26 January 2026, the cold front fractured as it moved inland across Mexico’s Isthmus of Tehuantepec — the cold air was then channeled southward through Chivela Pass and emerged as a Tehuano (or... Read More
Due to a lack of radar coverage over American Samoa, WSO Pago Pago requested a 1-minute Mesoscale Domain Sector 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 rain showers and thunderstorms that developed in the general vicinity of the American Samoa... Read More
5-minute CONUS Sector GOES-19 (GOES-East) Red Visible and Near-Infrared “Snow/Ice” images (above) displayed a cluster of aircraft dissipation trails or “distrails” (in contrast to aircraft condensation trails or contrails) that drifted eastward across Ohio on 24 January 2026.These distrail features were caused by aircraft that were either ascending through or descending through a... Read More
A prescribed burn in far western Arizona’s Havasu National Wildlife Refuge became uncontrolled as northerly winds unexpectedly increased (gusting to 36 mph at RAWS site QHAA3 just north of the fire, and gusting to 28 mph at Needles Airport just west of the fire around 2300 UTC) — and grew to become the Havasu Fire... Read More
