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Diamondra (Southern Indian Ocean)
January 29, 2015

[image-69]Diamondra Sitting in the Middle of the Indian Ocean Not Threatening Land

Tropical Cyclone Diamondra is currently in the middle of the Indian Ocean and is not threatening any land masses at this time.  Its movement during the past six hours have been south-southeastward at 5 kph.  Diamondra is located approximately 936 miles south southeast of Diego Garcia.  The satellite imagery shows diminishing convection and winds in the storm.  It has been downgraded to a subtropical cyclone.  The Joint Typhoon Warning Center will continue to monitor the storm for signs of regeneration, but at this time, this will be the storm's last update unless conditions change.

Lynn Jenner with information from the Joint Typhoon Warning Center
NASA's Goddard Space Flight Center

 


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Jan. 28, 2015 - NASA Panorama of Two Southern Indian Ocean Tropical Cyclones

The MODIS instrument that flies aboard two NASA satellites captured images of Tropical Cyclone Diamondra and Tropical Cyclone Eunice in the South Indian Ocean, and two separate images were combined to make one panorama of the two storms.

The Moderate Resolution Imaging Spectroradiometer or MODIS instrument flies aboard NASA's Aqua and Terra satellites. Those satellites fly in formation behind each other as the circle the Earth. An image from the MODIS instrument aboard each satellite was used to create a panorama from January 28, 2015 at 08:30 UTC (3:30 a.m. EST) showing both storms. Tropical Cyclone Eunice is the more powerful of the two storms and is west of Diamondra.

On Jan. 28, 2015 at 0900 UTC (4 a.m. EST),  Tropical cyclone Diamondra was centered near 19.2 south latitude and 79.3 east longitude, about 827 nautical miles (951.7 miles/1,532 km) south-southeast of Diego Garcia. Diamondra was moving to the east-southeast at 9 knots (10.3 mph/16.6 kph) and had maximum sustained winds still near 45 knots (51.7 mph/83.3 kph) as they were on Jan. 27. Forecasters at the Joint Typhoon Warning Center (JTWC) expect the storm to intensify to 55 knots (63.2 mph/101.9 kph) before running into conditions that will weaken it quickly. JTWC expects those conditions to dissipate the storm in three days.

Tropical cyclone Eunice is the powerhouse of the two storms with maximum sustained winds near 85 knots (97.8 mph/157.4 kph) at hurricane force. JTWC forecasters expect Eunice to continue strengthening over the next couple of days and peak near 125 knots (143.8 mph/231.5 kph) before weakening.

It was centered 622 nautical miles (715.8 miles/1,152 km) southwest of Diego Garcia near 14.2 south latitude and 64.8 east longitude. Eunice was moving to the southeast at 4 knots (4.6 mph/7.4 kph).

Neither storm threatens any land areas.

Rob Gutro
NASA's Goddard Space Flight Center


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Jan. 27, 2015 - NASA Spots Heavy Rainfall in Tropical Cyclone Diamondra

The eighth tropical cyclone of the Southern Indian Ocean season has formed far from land, and the Tropical Rainfall Measuring Mission or TRMM satellite saw some heavy rain east of the storm's center.

The TRMM satellite is managed by both NASA and the Japan Aerospace Exploration Agency or JAXA. TRMM flew over Tropical Cyclone Diamondra on January 27 at 1402 UTC (9:02 a.m. EST) and measured rainfall rates within the storm. TRMM found heavy rainfall occurring east of the center of circulation in excess of 1.6 inches per hour.

Diamondra formed late on January 26 and by 0900 UTC (4 a.m. EST), the storm's maximum sustained winds had strengthened to 45 knots (51.7 mph/83.3 kph). At that time, Diamondra was centered near 18.1 south latitude and 77.9 east longitude, or about 732 nautical miles (842 miles/1,356 km) south-southeast of Diego Garcia. The tropical storm was moving to the south-southeast at 6 knots (6.9 mph/11.1 kph).

The Joint Typhoon Warning Center expects the storm to strengthen to 60 knots by January 29 and then weaken as it moves into cooler waters and encounters strong vertical wind shear.

Rob Gutro
NASA's Goddard Space Flight Center

TRMM image of Diamondra
On Jan. 27 at 1402 UTC, the TRMM satellite found heavy rainfall (white) occurring east of the center of circulation in excess of 1.6 inches per hour. The cloud data is from Europe's METEO-7 satellite.
Image Credit: 
NASA/JAXA/NRL/ESA
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Diamondra and Eunice in the Southern Indian Ocean
This MODIS instrument panorama shows Tropical Cyclone Eunice (left) and Tropical Cyclone Diamondra (right) in the Southern Indian Ocean on Jan. 28, 2015.
Image Credit: 
NASA's Goddard MODIS Rapid Response Team
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satellite image of Diamondra
Satellite image of the Tropical Cyclone Diamondra in the South Indian Ocean.
Image Credit: 
JTWC/SATOPS
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Page Last Updated: January 29th, 2015
Page Editor: Lynn Jenner