Tropical Cyclone Helen headed for landfall in India

November 20, 2013

Tropical Cyclone 04B has strengthened and been renamed "Helen" as it slowly nears landfall in southeastern India.

On Nov. 20 at 1200 UTC/7 a.m. EST, Tropical Cyclone Helen had maximum sustained winds near 50 knots/57.5 mph/92.6 kph. It was centered near 15.5 north and 83.9 east, about 499 nautical miles/574.2 miles/924.1 km south-southwest of Calcutta, India. Helen was crawling to the northwest at 1 knot/1.1 mph/1.8 kph. A mid-level subtropical ridge (elongated area) of high pressure is expected to slowly build east of Helen and steer the storm on a more western track in the next day.

Current warnings are in effect for fishermen along the coasts of Andhra Pradesh, who are advised to return to shore.

Animated multispectral satellite showed a resurgence of deep convection over the low-level center of circulation. Satellite data also showed that the band of thunderstorms that appeared strong to the north has weakened and become fragmented. Visible/short wave infrared data from ESA's METEO-7 satellite and rainfall data from NASA's Tropical Rainfall Measuring Mission or TRMM satellite was combined at the Naval Research Laboratory to create a composite image of the storm on Nov. 20. The image showed the clouds associated with Helen were mostly still over the open waters of the Arabian Sea, and that south of the center, light rainfall was occurring.

Helen is expected to intensify to 60 knots/69.0 mph/111.1 kph over the next two days and weaken before landfall. Helen is forecast to pass just south of the Yelichetladibba Palem and Nachugunta Reserved Forests in Andhra Pradesh, located in the coastal plain of Krishna Delta. Helen is expected to make landfall in the vicinity of Chinnaganjam in southeastern India.
-end-


NASA/Goddard Space Flight Center

Related Tropical Cyclone Articles from Brightsurf:

NASA finds post-Tropical Cyclone Dolly exiting the tropical stage
NASA's Terra satellite provided a night-time look at what is now Post-Tropical Storm Dolly in the Northern Atlantic Ocean.

NASA find Herold a fading ex-tropical cyclone
Former Tropical Cyclone Herold is now a fading area of low-pressure in the Southern Indian Ocean and NASA's Aqua satellite provided forecasters with a visible image.

NASA sees Tropical Cyclone Herold's eye
NASA's Aqua satellite passed over the Southern Indian Ocean and captured an image of a well-developed Tropical Cyclone Herold at hurricane strength, east of Madagascar.

A new method to improve tropical cyclone intensity forecasts
There are many reasons for model errors in numerical weather forecasting of tropical cyclone intensity.

NASA catches the dissipation of Tropical Cyclone Claudia
Tropical Cyclone Claudia was dissipating in the Southern Indian Ocean when NASA's Terra satellite captured a visible image of storm as it flew overhead in its orbit around the Earth.

NASA finds tropical cyclone 02S consolidating
NASA's Aqua satellite captured an image of Tropical cyclone 02S and the visible image showed that the storm was getting better organized.

NASA finds Tropical Cyclone's Vayu getting stretched
When NASA's Aqua satellite passed over the Northern Indian Ocean, it captured an infrared image that revealed Tropical Cyclone Vayu was elongating.

NASA takes Tropical Cyclone's Vayu's temperature
NASA's Aqua satellite passed over the Northern Indian Ocean and took the temperature of Tropical Cyclone Vayu as it moved northward in the Arabian Sea.

NASA catches development of Tropical Cyclone 02A
Visible imagery from NASA's Terra satellite provided confirmation of the development of Tropical Cyclone 02A in the Arabian Sea, Northern Indian Ocean.

NASA goes infrared on powerful Tropical Cyclone Fani
NASA's Aqua satellite focused an infrared eye on a very powerful Tropical Cyclone Fani as it approached landfall in northeastern India.

Read More: Tropical Cyclone News and Tropical Cyclone Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.