tropical cyclones

Giovanna Shown Becoming Dangerous

News Image: 
TRMM radar image of Giovanna

Tropical cyclone Giovanna was located in the Indian Ocean east-northeast of Madagascar when it was classified as a tropical storm on 9 Febuary 2012. The TRMM satellite image above shows Giovanna when it was rapidly becoming more powerful on 11 February 2012 at 1200 UTC. Giovanna had intensified to a category 3 tropical cyclone on the Saffir-Simpson scale with wind speeds estimated at 100 kts (~115 mph). This TRMM pass shows that an eyewall replacement was occurring at that time.

Iggy Rainfall Hits Australia

News Image: 
TRMM image of tropical cyclone Iggy

On 2 February 2012 at 1044 UTC the TRMM satellite again saw weakening tropical storm IGGY as it was approaching the coast of southwestern Australia. Data from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments showed that bands of heavy rainfall measuring over 50mm/hr (~2 inches) were hitting coastal areas northwest of Perth, Australia. A red tropical storm symbol shows where Iggy's center was located.

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