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Archive: Aug 2020

Severe thunderstorms in South Dakota

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.35 µm) images — with and without an overlay of GLM Flash Extent Density (above) showed the rapid development of thunderstorms along a cold front across eastern South Dakota on 30 August 2020. One particularly well-defined and long-lived Enhanced-V signature with an Above-Anvil Cirrus Plume (reference | VISIT training) was seen in the Visible and... Read More

Category 4 Hurricane Laura makes landfall in Louisiana

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.35 µm) images — with and without an overlay of GLM Flash Extent Density (above) showed Category 4 Hurricane Laura as it made landfall near Cameron, Louisiana around 0600 UTC on 27 August 2020. The GLM data showed intermittent lightning activity along the inner eyewall region of the hurricane.Strong outer convective bands ahead... Read More

Laura becomes a hurricane in the Gulf of Mexico

1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.35 µm) images (above) showed Laura during the the 12-hour period after it intensified from a Tropical Storm to a Hurricane in the southern Gulf of Mexico at 1215 UTC on 25 August 2020. Numerous convective overshooting tops were observed, some exhibiting cloud-top infrared brightness... Read More

True-color imagery from the CIMSS Direct Broadcast site

The Cooperative Institute for Meteorological Satellite Studies (CIMSS) acquires data directly from polar-orbiting satellites such as Suomi-NPP and NOAA-20 through Direct Broadcast antennae that are on the UW-Madison Campus. Community Satellite Processing Package (CSPP) software takes the Direct Broadcast signal and creates data files and, with Polar2Grid, imagery that are easily accessible at this ftp site where users can find directories for... Read More