NASA sees Cyclone Evan blown apart by wind shear

Dec 20, 2012
This infrared image from NOAA's GOES-15 satellite on Dec. 20 at 1500 UTC (10 a.m. EST) shows the remnants of former Tropical Cyclone Evan blown apart by very strong wind shear, northeast of New Zealand (lower left). The low pressure center is northwest of all of Evan's associated remnant clouds. Credit: NASA / NOAA GOES Project

Cyclone Evan is no more than a remnant low pressure area in the South Pacific Ocean now. NOAA's GOES-15 satellite captured an image of the remnants from its fixed orbit in space on Dec. 20 that showed strong wind shear had basically blown the storm apart.

The last official bulletin by the Joint was issued on Dec. 19 at 2100 UTC (4 p.m. EST/U.S. or 12:56 a.m. Fiji local time on Dec. 20). At that time, Evan's were still near 35 knots (40 mph/64.8 kph) and it had transitioned into an extra-tropical storm. It was located 400 nautical miles south of Nadi, Fiji, near 24.3 south latitude and 178.5 east longitude. Evan was moving to the south-southeast at 4 knots (4.6 mph/7.4 kph). Evan has since become a remnant low pressure system.

NOAA's GOES-15 satellite captured an infrared image of Evan's remnants on Dec. 20 at 1500 UTC (10 a.m. EST) showed the remnants of former Tropical Cyclone Evan blown apart by very strong , northeast of New Zealand. The low pressure center appears northwest of the plume of clouds associated Evan's remnants. The image was created by NASA's GOES Project, located at NASA's Goddard Space Flight Center in Greenbelt, Md.

Northwesterly wind shear continued to be very strong, blowing between 40 and 50 knots (46 and 57.5 mph/74 and 92.6 kph) and cooler ocean waters were weakening Evan quickly.

Evan has now gone into the history books as one of the strongest cyclones to hit Fiji and American Samoa in recent memory.

Explore further: NASA image: Fires in the southern United States

add to favorites email to friend print save as pdf

Related Stories

NASA sees dangerous category 4 Cyclone Evan lashing Fiji

Dec 17, 2012

Cyclone Evan is one of the strongest cyclones to affect Fiji in almost two decades, and NASA satellites are analyzing the storm and providing data on rainfall, cloud height, temperature data and more to forecasters.

Recommended for you

NASA image: Fires in the southern United States

2 hours ago

In this image taken by the Aqua satellite of the southern United States actively burning areas as detected by MODIS's thermal bands are outlined in red. Each red hot spot is an area where the thermal detectors ...

Software models ocean currents for oil and gas search

3 hours ago

A study involving the use of streamline visualisation has found the technology can help guide electromagnetic transmitter and receiver placements, thereby aiding the search for oil and gas on the seafloor.

User comments : 0