The TRMM satellite had a good view of tropical storm Kenneth in the eastern Pacific Ocean when it passed above on 21 November 2011 at 0510 UTC (20 November 2011 9:10 PM PST). The National Hurricane Center (NHC) upgraded Kenneth to a hurricane on 21 November 2011 at 1500 UTC (7:00 AM PST) after determining that a ragged eye was forming. The image on the right shows a rainfall analysis derived from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments. TMI data show that heavy rainfall was occurring around the center of Kenneth's circulation.