File:NASA Sees Cyclone Evan In 3-D (8281242347).jpg
On Saturday, Dec. 15 at 2100 UTC (4 p.m. EST/U.S.), Evan was located near 13.4 south and 177.7 west, about 585 miles ENE of Nadi, Fiji. Evan was moving to the west at 9 knots. Evan has grown in size as tropical-storm-force winds now extend 120 miles from the center. Evan is moving west- southwest, and is forecast to intensify for a day or so as it curves to the southwest, towards and to the north and west of Fiji.
On Friday December 14, 2012, intensifying tropical cyclone Evan devastated the Samoan Islands when it passed over the islands on December 13, 2012. NASA's Tropical Rainfall Measuring Mission (TRMM) satellite flew directly above Evan today (December 14, 2012 ) at 0659 UTC when the tropical cyclone was a category 3 on the Saffir-Simpson scale with winds of 100kts (115 mph). TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) data were used in the rainfall analysis. TRMM's Precipitation Radar (PR) showed that very intense storms in Evan's northern eye wall were dropping rain at a rate of up to 147mm/hr (~5.8 inches). The strongest radar reflectivity value of over 57dBZ was found in a powerful storm in the eastern side of Evan's eye. TRMM PR also revealed that these violent storms were reaching heights of at least 16km (~9.9 miles).
To see an animation of the satellite view flying around the storm: trmm.gsfc.nasa.gov/trmm_rain/Events/evan_14_december_2012...
Image Credit: NASA/SSAI, Hal Pierce Text Credit: NASA/Goddard, Rob Gutro
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