NASA watches as Tropical Storm Bolaven develops

Aug 20, 2012
NASA's Aqua satellite has been monitoring the birth and progress of Tropical Storm Bolaven in the western North Pacific from Aug. 19-20. The AIRS instrument has provided infrared satellite imagery that shows the development of colder thunderstorm cloud-top temperatures that were indicative of strengthening storms. Credit: NASA JPL, Ed Olsen

Tropical Storm Bolaven was born over the weekend of August 18-19 in the western North Pacific, and NASA captured infrared satellite imagery of its birth and growth.

NASA's Aqua satellite has been monitoring the birth and progress of Tropical Storm Bolaven in the western North Pacific from Aug 19-20, 2012. The Atmospheric Infrared Sounder (AIRS) instrument has provided that shows the development of colder -top temperatures, that were indicative of strengthening storms. Tropical Storm Bolaven also took more of a rounded shape on August 20 as it continued to organize and intensify.

On August 19 at 03:11 UTC (Aug. 18 at 11:11 p.m. EDT) the AIRS image of Bolaven appeared loosely organized. At that time, the strongest thunderstorms appeared to be east of the center of circulation.

On August 20 at 3:53 UTC (Aug. 19 11:53 p.m. EDT), NASA's AIRS instrument on the Aqua satellite captured another of Bolaven. The infrared AIRS image showed the storm had a much tighter circulation and Bolaven's strongest thunderstorms were south of the center of circulation, where cloud top temperatures were colder than -63 Fahrenheit (-52 Celsius). Hours later, Bolaven was located about 400 nautical miles (460 miles/741 km) south of Iwo To, Japan, near 18.2 North latitude and 141.2 West longitude. It was moving to the north-northwest at 5 knots (5.7 mph/9.2 kmh) and had near 35 knots (40 mph/65 kmh).

Bolaven will continue strengthening as it moves to the west-northwest over the next couple of days in open waters of the western North Pacific Ocean. By August 24 forecasters at the Joint expect Bolaven to reach typhoon status.

Explore further: Strong quake hits east Indonesia; no tsunami threat

add to favorites email to friend print save as pdf

Related Stories

Infrared NASA imagery shows a weaker Tropical Storm 13W

Aug 07, 2012

Infrared satellite imagery from shows how cold cloud top temperatures are in a tropical cyclone, and recent imagery from NASA's Aqua satellite shows the cloud-top temperatures have been warming in Tropical ...

NASA sees triple tropical trouble in northwestern Pacific

Aug 03, 2012

NASA's Aqua satellite captured an image of a very busy northwestern Pacific Ocean where three tropical cyclones are active. Tropical Storms Damrey and Saola are dissipating in China, while Tropical depression ...

NASA sees Tropical Storm Kirogi headed for cooler waters

Aug 09, 2012

Sea surface temperatures cooler than 80 degrees Fahrenheit can sap the strength from a tropical cyclone and Tropical Storm Kirogi is headed toward waters below that threshold on its track through the northwestern ...

Recommended for you

Strong quake hits east Indonesia; no tsunami threat

15 hours ago

A strong earthquake struck off the coast of eastern Indonesia on Sunday evening, but there were no immediate reports of injuries or damage, and authorities said there was no threat of a tsunami.

Scientists make strides in tsunami warning since 2004

Dec 19, 2014

The 2004 tsunami led to greater global cooperation and improved techniques for detecting waves that could reach faraway shores, even though scientists still cannot predict when an earthquake will strike.

Trade winds ventilate the tropical oceans

Dec 19, 2014

Long-term observations indicate that the oxygen minimum zones in the tropical oceans have expanded in recent decades. The reason is still unknown. Now scientists at the GEOMAR Helmholtz Centre for Ocean Research ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.