TRMM’s TMI and PR instruments observed Cyclone Yasi as it developed from a Category 3 tropical cyclone (Feb. 1st, left), to a Category 5 event (Feb. 2nd) when it made landfall with wind gusts reported at up to 186 mph, and then finally as it began to dissipate on Feb. 3rd (right).

Image showing TRMM's Precipitation Radar (PR) and the TRMM Microwave Imager (TMI) instrument resolving the intensifying thunderstorms near a tropical cyclone Magda’s eyewall off the northwest coast of Australia on January 21st, 2010.

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A GOES-12 1 km visible image of Hurricane Katrina. At landfall, the storm was a Category 3 hurricane.

Original Source: http://www.nnvl.noaa.gov

Data from the NOAA GOES satellite. Images produced by Hal Pierce. Original source: http://rsd.gsfc.nasa.gov/rsd/images/Floyd.html