True-color imagery over Lakes Erie/Ontario shows a white patch backed into extreme eastern Lake Erie, and also in Lake Ontario at the mouth of the Niagara River. White patches also exist over inland portions of New York, between Fredonia and Houghton. Are these white regions clouds or snow? Visible imagery,... Read More
Target Sector (2.5-minute interval) JMA Himawari-9 AHI Red Visible (0.64 µm) and Clean Infrared Window (10.4 µm) images (above) showed Cyclone Errol as it was rapidly intensifying off the northern coast of Western Australia on 15-16 April 2025. About 2 hours after the end of the above animation, Errol peaked... Read More
GOES-18 True Color imagery during the day on 7 April, above, shows the development of a standing wave downwind of the elevated topography on the Aleutian peninsula between King Salmon and Perryville. (Note also the faint signal of volcanic ash as discussed here) What atmospheric conditions support the development of... Read More
Brandon Aydlett, the Science and Operations Officer (SOO) at the NWS forecast office in Guam (where the National Weather Service day begins) relays the following message: Yesterday we received a call from a local radio noting something suspicious in IR imagery over the Philippines. Of course, it looked eerily like... Read More
