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Hurricane Season 2007: Nari (Western Pacific)
09.17.07
 
Two Typhoons: Double Trouble in the East China Sea

Satellite image of storms Nari and Wipha
Click image for enlargement.

While Typhoon Wipha is whipping up waves in the western Pacific Ocean, Typhoon Nari was raining on South Korea on Sunday, Sept. 16.

In this satellite image, both typhoons are visible, Nari as the blue area in the center, and Wipha in the center bottom of the image. Wipha is on a track for a landfall south of Shanghai, China early on Sept. 19, local time. By Sept. 20, Wipha is forecast to curve toward Seoul, South Korea.

At the time of this satellite image, created by data from the Atmospheric Infrared Sounder (AIRS) on NASA's Aqua satellite on Sunday, Sept. 16, Nari was a tropical storm with peak winds of 35 knots (40 mph), and Wipha was a Category 3 typhoon with peak winds of 105 knots (120 mph).

As of Sept. 17 at 4:47 UTC (12:47 a.m. EDT), Typhoon Wipha had strengthened into a Category 4 typhoon on the Saffir-Simpson Scale. Wipha was located near 23.4 degrees north latitude and 125.6 east longitude. It is moving west-northwest at 11 knots (12 mph) and had with maximum sustained winds near 120 knots (138 mph) with gusts to 145 knots (166 mph).

The blue areas in both storms show clouds and rains. This AIRS image shows the temperature of the cloud tops or the surface of the Earth in cloud-free regions. The lowest temperatures (in purple) are associated with high, cold cloud tops that make up the top of the typhoons. The infrared signal does not penetrate through clouds. Where there are no clouds the AIRS instrument reads the infrared signal from the surface of the Earth, revealing warmer temperatures (red). This infrared image shows large areas of strong convection surrounding the core of the storm (in purple).

Rob Gutro (From JTWC reports)
Goddard Space Flight Center
Image credit: NASA/JPL




A Look Back at the Formation of Typhoon Nari

Satellite image of Typhoon Nari
Click image for enlargement.

Typhoon Nari formed as a tropical storm near Okinawa on September 12, reaching typhoon strength the next day. The typhoon was forecast to swing through the East China Sea and bring stormy seas and rain to China, the Korean Peninsula, and Japan. By late in the day September 14, Nari had reached Category 4, "Super Typhoon" status, with peak winds measured at 220 kilometers per hour (135 miles per hour). However, the typhoon was out at sea, and forecasts were calling for it to lose most of its strength well before coming ashore in Japan.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired this photo-like image at 10:50 a.m. local time (01:50 UTC) on September 14, 2007. Typhoon Nari appears here as a ball of circling clouds with a distinct, though cloudy, eye at its center. According to Unisys Weather, Nari had peak winds of around 120 km/hr (65 mph), and it was classified a Category 1 typhoon.

Related link:

+ Higher-resolution image and Google Earth KMZ file

Image credit: Jesse Allen/MODIS Rapid Response




Powerful Typhoon Nari in the East China Sea

Satellite image of storm Nari
Click image for enlargement.

On Friday, Sept. 14 at 14:12 UTC (8:12 a.m. EDT), powerful Typhoon Nari was spinning in the East China Sea as a category four typhoon. NASA's Aqua satellite captured this visible image in the early morning hours of Sept. 14.

At that time, the center was located near 25.7 degrees north latitude and 127.2 east longitude, passing to the west of Okinawa Island, Japan. Okinawa is the largest of the Ryukyu Islands, in the East China Sea.

Nari was moving to the west-northwest at 11 knots (12 mph) with maximum sustained winds near 115 knots (132 mph) and gusts to 140 knots (161 mph).

Satellite image of storm Nari
Click image for enlargement.

A Look at the Coldest and Highest Cloud Tops

Typhoon Nari can be seen in the center of this infrared image from September 14 at 4:59 UTC (12:59 a.m. EDT). It was created by data from the Atmospheric Infrared Sounder (AIRS) on NASA's Aqua satellite, when Nari was a Category Two typhoon.

The blue areas show Nari's clouds. This AIRS image shows the temperature of the cloud tops or the surface of the Earth in cloud-free regions. The lowest temperatures (in purple) are associated with high, cold cloud tops that make up the top of the typhoon. The infrared signal does not penetrate through clouds. Where there are no clouds the AIRS instrument reads the infrared signal from the surface of the Earth, revealing warmer temperatures (red). This infrared image shows large areas of strong convection surrounding the core of the storm (in purple).

Rob Gutro (From JTWC reports)
Goddard Space Flight Center
Images credit: NASA/JPL