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NASA Measures Rainfall as Cyclone Zane Approaches Queensland, Australia

03.05.2013
ASA’s Tropical Rainfall Measuring Mission or TRMM satellite passed over Cyclone Zane as it was approaching Queensland Australia’s Cape York Peninsula and measured rainfall rates within the storm. TRMM data showed a disorganized storm with the strongest rain falling northwest of the center.

Cyclone Zane, as of 12:00 UTC (10:00 p.m. Australian Eastern Standard Time or AEST) on May 1, 2013, was located about 215 km (~133 miles) due east of the coast of Queensland, Australia.


This 3D picture of Zane from the TRMM PR shows one area of active deep convection reaching upwards of 15 km (shown in red), away from the center of circulation and so does not necessarily preclude further strengthening. Credit: NASA/SSAI, Hal Pierce

NASA’s TRMM satellite captured an image of Cyclone Zane at 11:48 UTC (9:48 p.m. AEST/7:48 a.m. EDT, U.S.) May 1, 2013. At the time, the center of circulation was located about 215 km (~133 miles) due east of the coast of Queensland, Australia and was heading west-northwest. TRMM revealed that Zane was still not very well organized with no eye visible and very little evidence of banding (curvature) in the rain area. At the time of the image, Zane was a Category 1 cyclone (equivalent to a tropical storm on the U.S. Saffir-Simpson scale) with sustained winds reported at 45 knots (~52 mph) by the Australian Bureau of Meteorology's Tropical Cyclone Warning Centre. Most of the rainfall that TRMM measured was light to moderate within Cyclone Zane, with the exception of an area northwest of the center that had a rainfall rate of around 2 inches/50 mm per hour.

The TRMM data was also made into a 3-D image that showed the cloud heights relative to the rainfall rates occurring in Zane. The image was created at NASA’s Goddard Space Flight Center in Greenbelt, Md. and showed that although Zane had an area of active deep convection reaching upwards of 15 km (about 9.2 miles), it was located away from the center of circulation and does not necessarily preclude further strengthening. In fact, Zane weakened further.

By May 1 at 2100 UTC (5 p.m. EDT, U.S.), the Joint Typhoon Warning Center issued their final bulletin on Cyclone Zane. At that time Zane’s maximum sustained winds were near 35 knots (40 mph/64 kph) and weakening. Zane was located about 270 nautical miles north-northwest of Cairns, Australia and was moving to the northwest at 10 knots (11.5 mph/18.5 kph).

Zane is expected to weaken due to unfavorable wind shear before crossing the coast of northern Queensland north of the Lockart River and dissipate shortly afterward.

Text Credit: Steve Lang/Rob Gutro
NASA's Goddard Space Flight Center, Greenbelt, Md.

Steve Lang/Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov
http://www1.nasa.gov/mission_pages/hurricanes/archives/2013/h2013_Zane.html

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