NASA sees Tropical Storm 9 over Guam

Jul 11, 2014
NASA sees Tropical Storm 9 over Guam
The MODIS instrument aboard NASA's Aqua satellite captured this visible image of Tropical Depression 09W over Guam on July 11 at 03:45 UTC. Credit: NASA Goddard MODIS Rapid Response Team

Guam and surrounding areas were under a Tropical Storm Warning and Watch on July 11 as NASA's Aqua satellite passed overhead. During the early morning hours on July 11, Tropical Depression 09W strengthened into a tropical storm.

On July 11 at 03:45 UTC (1:45 p.m. EDT Guam local time/), the Moderate Resolution Spectroradiometer or MODIS instrument that flies aboard NASA's Aqua satellite captured a visible image of Tropical Storm 09W (09W) over Guam. The MODIS image showed a concentration of strong thunderstorms around the center of circulation, and in a large band circling around the western quadrant and spiraling into the center.

On July 11, a tropical storm warning was in effect for Guam, Rota and surrounding waters out to 40 nautical miles. A watch continued for Tinian, Saipan and surrounding waters out to 40 nautical miles. On July 11, the Governor of Guam declared Tropical Storm Condition 1 as of 8 p.m. CHST (local time).

At 1200 UTC (8 a.m. EDT/10 p.m. CHST-Guam local time) Tropical Storm 09W's maximum sustained winds were near 40 mph and the National Weather Service expect winds to increase over the weekend of July 12-13. For updated forecasts, including warnings and watches, visit the National Weather Service Forecast Office in Tiyan, Guam website: http://www.prh.noaa.gov/pr/guam/.

The center of Tropical Storm 09w was located by satellite near latitude 13.0 north and longitude 146.1 east. That puts the center of 09W about 165 miles east-southeast of Guam, 155 miles southeast of Rota, and 185 miles south-southeast of Tinian and Saipan.

Tropical Storm 09W is moving west-northwest at 14 mph and is expected to be very near Guam early on July 12 (local time). The U.S. National Weather Service forecast office in Guam expects that general motion is expected to continue through July 12 before 09W turns gradually westward. 09W will likely be renamed "Rammasun" from the World Meteorological Organization's Western North Pacific and the South China Sea Names list.

The Joint Typhoon Warning Center forecast calls for 09W to strengthen into a typhoon after passing Guam and continue on a westerly track, approaching the northern Philippines around July 16.

Explore further: NASA-NOAA Suomi NPP satellite sees power within newborn Tropical Depression 09W

add to favorites email to friend print save as pdf

Related Stories

Newborn Tropical Storm Tapah threatens Saipan and Tinian

Apr 28, 2014

A tropical storm warning is in force for Saipan and Tinian as Tropical Storm Tapah moves north through the Northwestern Pacific Ocean on April 28. When NASA-NOAA's Suomi NPP satellite passed overhead and, ...

NASA sees rainfall in newborn Tropical Depression 8W

Jul 03, 2014

Powerful thunderstorms in some areas of newborn Tropical Depression 08W in the Northwestern Pacific Ocean were dropping heavy rainfall on July 3 as NASA's Tropical Rainfall Measuring Mission (TRMM) satellite ...

NASA satellites see Neoguri grow into a super typhoon

Jul 07, 2014

From July 4 to July 7 Tropical Cyclone Neoguri strengthened from a tropical storm into a supertyphoon. NASA's Terra and Aqua satellites passed over the rapidly intensifying storm and provided forecasters ...

Recommended for you

NASA catches a weaker Edouard, headed toward Azores

7 hours ago

NASA's Aqua satellite passed over the Atlantic Ocean and captured a picture of Tropical Storm Edouard as it continues to weaken. The National Hurricane Center expects Edouard to affect the western Azores ...

Tree rings and arroyos

Sep 18, 2014

A new GSA Bulletin study uses tree rings to document arroyo evolution along the lower Rio Puerco and Chaco Wash in northern New Mexico, USA. By determining burial dates in tree rings from salt cedar and wi ...

User comments : 0