Clean-window infrared imagery centered on the Samoan Islands on 9 March 2025, above, show convective development north of Upolu that subsequently shows a cyclonic circulation. This system was accompanied by Flood Warnings, Heavy Rain Warnings and Marine Warnings and Wind Advisories over all of Samoa (Facebook link). Gusts exceeding 70 km/hr... Read More

Early this morning at around 3:15 AM local time, an EF-0 tornado touched down in Pico Rivera, a community in Los Angeles County, California. It damaged several homes and knocked down numerous trees over the course of its mile-long path. Numerous instances of damaging winds were also reported, as seen... Read More

A sequence of Suomi-NPP VIIRS Visible images (above) showed the formation of large ice leads in the eastern Beaufort Sea — as well as the growth of a polynya adjacent to the coast near the Alaska/Yukon border — during the 5-day period from 07-11 March 2025.Suomi-NPP VIIRS Shortwave Infrared images... Read More

Several recent notices have announced that radiosonde-carrying balloon launches to measure the temperature and moisture (and winds) in the atmosphere are suspended due to personnel shortages. There are products available to mitigate this data shortage. NOAA-Unique Combined Atmospheric Processing System (NUCAPS) profiles (training video here) use data from CrIS/ATMS (on... Read More