NASA eyes the birth of Tropical Cyclone Haley

Feb 11, 2013
NASA eyes the birth of Tropical Cyclone Haley
On Feb. 9 at 2020 UTC the MODIS instrument aboard NASA's Terra satellite captured this visible image of Tropical Cyclone Haley (14P) in the South Pacific Ocean. Credit: Credit: NASA Goddard MODIS Rapid Response Team

Tropical Cyclone Haley was forming quickly as NASA's Aqua satellite captured an image of the storm in the South Pacific Ocean.

On Feb. 9 at 2020 UTC (3:20 p.m. EST) the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard NASA's Terra satellite captured a visible image of System 93P (known in Fiji as 14F). The MODIS image showed a circular center of circulation with banding features, two things that indicated that the low pressure area was quickly organizing. The next day, the low became Tropical Storm Haley.

Tropical Cyclone Haley formed on Feb. 10 at 0300 UTC, about 325 nautical miles (374 miles 602 km) south-southwest of Bora Bora, Society Islands, French Polynesia, in the open waters of the . Maximum sustained winds strengthened quickly to 45 knots (51.7 mph/83.3 kph). Soon after Haley intensified, indicated that convection (rising air that forms thunderstorms that make up the storm) were already weakening around the center.

On Feb. 11 at 0300 UTC, the Joint issued its final advisory on Tropical Cyclone Haley. At that time, Haley's center was located near 24.8 south latitude and 150.0 west longitude, about 500 nautical miles (575.4 miles/926 km) southeast of Bora Bora, Society Islands. Haley was moving to the southeast at 11 knots (12.6 mph/20.3 kph). As a result of wind shear and cooler , Haley's had already dropped to 35 knots (40.2 mph/64.8 kph).

The forecasters at the Joint Typhoon Warning Center expect Haley to continue moving southeast as wind shear increases and sea surface temperatures become even cooler. Both of those factors are expected to dissipate Haley by Tuesday, Feb. 12.

Explore further: NASA sees Tropical Storm playing polo with western Mexico

add to favorites email to friend print save as pdf

Related Stories

NASA eyes Typhoon Prapiroon intensifying

Oct 09, 2012

Typhoon Prapiroon is the twenty-second tropical cyclone of the western North Pacific Ocean, making for a very active season. NASA's Terra satellite passed over the storm as it was intensifying into a typhoon ...

Recommended for you

NASA catches a weaker Edouard, headed toward Azores

11 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