Hurricane Adrian's eye was clearly seen by the TRMM satellite when it passed over on 10 June 2011 at 1608 UTC. The heavy rainfall completely surrounding Adrian's well defined eye was revealed with TRMM Microwave Imager (TMI) data obtained at the same time. Hurricane Adrain, located southwest Mexico , was classified as a dangerous category 4 on the Saffir-Simpson scale with sustained wind speeds estimated at 115 kts (~132 mph).