Typhoon Muifa had wind speeds of about 95 kts (~109 mph) when the TRMM satellite passed above on 3 August 2011 at 1307 UTC. Muifa is now predicted to pass just to the south of the Japanese Island of Okinawa. The southern tip of the Okinawa is expected to be in the right front quadrant of the typhoon on 5 August 2011 where the highest winds are normally located. TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data were used in the rainfall analysis shown on the right. See earlier TRMM information about typhoon Muifa.

The National Hurricane Center (NHC) announced the formation of tropical storm Emily on 1 August 2011 at 2330 UTC (7:30 PM AST). The TRMM satellite flew over the storm a short time later on 2 August 2011 at 0137 UTC (9:37 PM AST). A rainfall analysis from TRMM's Microwave (TMI) and Precipitation Radar (PR) data is shown above. This analysis shows that relatively little rainfall was occurring near the storm's approximate center that is indicated by a red tropical storm symbol. Moderate rainfall was revealed in a large feeder band on the eastern side of the storm. Emily is predicted to move

The TRMM satellite showed that tropical storm Eugene was very well organized with heavy thunderstorms located south of a forming eyewall on 1 August 2011 at 1350 UTC. Eugene is expected to move to the northwest and stay off the Mexican coast as have all eastern Pacific tropical cyclones except Beatriz so far this year.