NASA sees Tropical Storm Kirogi headed for cooler waters

Aug 09, 2012
NASA's Aqua satellite passed over Tropical Storm Kirogi on Aug. 9 at 0241 UTC. The AIRS instrument captured an infrared image of the cloud temperatures that showed a concentrated area of strongest storms (purple) and heaviest rainfall around west of the center of circulation. AIRS shows cool waters in the direction Kirogi is heading, which will sap the storm's strength. Credit: NASA JPL, Ed Olsen

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 Pacific Ocean, according to data from NASA's Aqua satellite.

NASA's Aqua satellite passed over Tropical Storm Kirogi on August 9 at 0241 UTC. The Atmospheric Infrared Sounder (AIRS) instrument captured an infrared image of the cloud temperatures that showed a concentrated area of strongest storms and heaviest rainfall west of the center of circulation. is currently at 10-15 knots, which is helping to prevent the storm from intensifying. The center of circulation also appears elongated from northwest to southeast in satellite imagery, which is a sign the storm is weakening. Whenever a tropical storm's center cannot "stack up" in the atmosphere, it begins to weaken.

On August 9, 2012 at 11 a.m. EDT (1500 UTC), Tropical Storm Kirogi had near 35 knots (40 mph/64.8 kmh). It was located about 550 nautical miles (633 miles/1,019 km) east-southeast of Misawa, Japan, near 38.5 North and 151.9 East. Kirogi was moving to the northwest at 20 knots (23 mph/37 kmh).

AIRS data indicates that the sea surface temperatures in the direction that Kirogi is moving are too cool to maintain a tropical cyclone. Kirogi is forecast to track over cooler than 25 Celsius once it nears 38 degrees north later on August 9, which will weaken the storm. The forecasters at the Joint note that the cooler waters will also help transform Kirogi's warm core to a cold core, making the storm into an extra-tropical one as it heads toward the two southernmost Kuril Islands.

Explore further: Warm US West, cold East: A 4,000-year pattern

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 ...

Recommended for you

Warm US West, cold East: A 4,000-year pattern

1 hour ago

Last winter's curvy jet stream pattern brought mild temperatures to western North America and harsh cold to the East. A University of Utah-led study shows that pattern became more pronounced 4,000 years ago, ...

New study outlines 'water world' theory of life's origins

3 hours ago

(Phys.org) —Life took root more than four billion years ago on our nascent Earth, a wetter and harsher place than now, bathed in sizzling ultraviolet rays. What started out as simple cells ultimately transformed ...

Agriculture's growing effects on rain

Apr 15, 2014

(Phys.org) —Increased agricultural activity is a rain taker, not a rain maker, according to researchers at Pacific Northwest National Laboratory and their collaborators at the University of California Los ...

User comments : 0

More news stories

Warm US West, cold East: A 4,000-year pattern

Last winter's curvy jet stream pattern brought mild temperatures to western North America and harsh cold to the East. A University of Utah-led study shows that pattern became more pronounced 4,000 years ago, ...

UN weather agency warns of 'El Nino' this year

The UN weather agency Tuesday warned there was a good chance of an "El Nino" climate phenomenon in the Pacific Ocean this year, bringing droughts and heavy rainfall to the rest of the world.

ESO image: A study in scarlet

This new image from ESO's La Silla Observatory in Chile reveals a cloud of hydrogen called Gum 41. In the middle of this little-known nebula, brilliant hot young stars are giving off energetic radiation that ...

First direct observations of excitons in motion achieved

A quasiparticle called an exciton—responsible for the transfer of energy within devices such as solar cells, LEDs, and semiconductor circuits—has been understood theoretically for decades. But exciton movement within ...

Patent talk: Google sharpens contact lens vision

(Phys.org) —A report from Patent Bolt brings us one step closer to what Google may have in mind in developing smart contact lenses. According to the discussion Google is interested in the concept of contact ...

Tech giants look to skies to spread Internet

The shortest path to the Internet for some remote corners of the world may be through the skies. That is the message from US tech giants seeking to spread the online gospel to hard-to-reach regions.