cimss.ssec.wisc.edu

Post-tropical Cyclone Rachel Makes Landfall in Baja California, Impacts Southeast US

While many of the nation’s meteorological eyes have been along the Gulf Coast as Isaias made just the first Atlantic ...
cimss.ssec.wisc.edu

Tropical Depression Nine forms in the Gulf of Mexico, and is forecast to intensify to Tropical Storm (or possibly Hurricane) Isaias

Infrared Window images (above) showed Tropical Depression Nine as it gradually developed a closed center of circulation in the southwestern Gulf of Mexico by 2100 UTC on 0. Plots of GLM Flash Points ...
cimss.ssec.wisc.edu

Crossing the International Date Line, Hurricane Nolo becomes Typhoon Nolo

Infrared Window images (above) showed Hurricane Nolo as it was intensifting from a Category 1 to a Category 2 storm while ...
cimss.ssec.wisc.edu

Fall Arrives in the Upper Midwest

It’s time to grab an apple cider donut and a pumpkin spice latte if you’re in the upper Midwest, because fall has arrived in ...
cimss.ssec.wisc.edu

Fall Equinox 2026: There GOES Summer!

Today is the Fall Equinox in the northern hemisphere and a great opportunity to show off some full disk GOES images. The passing of the seasons has always been marked by humans, sometimes because of ...
cimss.ssec.wisc.edu

Satellite signatures of the NASA Roman Space Telescope launch

1-minute Mesoscale Domain Sector GOES-19 (GOES-East) images (above) showed signatures of the SpaceX Falcon Heavy rocket booster following the Nancy Grace Roman Space Telescope launch from Kennedy ...
cimss.ssec.wisc.edu

Tropical Storm Lala becomes a Category 1 Hurricane south of the Big Island of Hawai`i

1-minute GOES-18 Infrared Window (left) and Visible images (right) with overlays of GLM Flash Points and surface observation data, from 1610 UTC on 15 August to 0400 UTC on 16 August The coldest ...
cimss.ssec.wisc.edu

Wind-driven Old Trails Fire burns through parts of the Spokane area, forcing numerous evacuations

1-minute GOES-18 Visible images with an overlay of the Fire Mask derived product, from 1901 UTC on 01 August to 0300 UTC on 02 August; METAR surface reports are plotted in cyan, Interstate 90 is ...
cimss.ssec.wisc.edu

Saharan Dust Plume Streams Over the Atlantic

While the Pacific has kept seeing its share of intense tropical systems, the Atlantic has been quieter. This is consistent with what we expect with a strong El Niño, as the global scale impacts from ...
cimss.ssec.wisc.edu

Dual Tropical Systems in the Eastern Pacific

We are starting to see the onset of an active period of tropical development in the eastern Pacific basin. Over the weekend of 18-19 July 2026, two separate systems were experiencing different stages ...
cimss.ssec.wisc.edu

Low-Earth Orbiting and Ground-Based Perspectives on the Ongoing Air Quality Event

The dominant weather story across much of the central United States remains the continuing impact of the Minnesota and Ontario wildfires on the air quality in the upper Midwest. You can see just how ...
cimss.ssec.wisc.edu

Super Typhoon Bavi: The CIMSS Perspective

IN THE TOP 3 PERCENT OF ALL WESTERN PACIFIC TYPHOONS OF THE PAST DECADE. The National Weather Service forecast office in Tiyan, Guam was even more direct with its language when it issued an extreme ...