NASA MODIS Image of the Day: July 20, 2011 - Typhoon Ma-on (08W) in the western Pacific Ocean

Status Report From: NASA MODIS Web
Posted: Wednesday, July 20, 2011



In mid-July 2011, the eighth tropical storm of the Pacific storm season rapidly intensified and was officially declared Typhoon Ma-on.

Bands of the typhoon sent soaking rain across Guam, the Mariana Islands, and other tropical Pacific locations.

The storm appeared to be headed toward Okinawa and then the disaster-ravaged Japanese mainland, forecasts suggested. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acquired this image on July 15, 2011. At 15:00 Universal Time on July 15, the typhoon was centered approximately 270 nautical miles (500 kilometers) south-southeast of Iwo To, Japan, and moving west at 12.6 miles per hour (20 kilometers per hour, 11 knots). The typhoon packed sustained winds of 132 miles per hour (213 kilometers per hour, or 115 knots), with gusts to 161 miles per hour (259 kilometers per hour, or 140 knots). Forecasters from the U.S. Joint Typhoon Warning Center (JTWC) initially did not think the storm would weaken prior to a landfall in Japan on July 19 or 20. However, by 15:00 UTC on July 19 Ma-on had been downgraded to a Tropical Storm. The JTWC predicts continued weakening over the next several days.

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